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Exhibit 10.17

Agreement No.                   

AMENDED AND RESTATED

MASTER SERVICES AGREEMENT

        This Amended and Restated Master Services Agreement ("Agreement") is
made this 14th day of March, 2003, by and between WilTel Communications, LLC
f/k/a Williams Communications, LLC, a Delaware limited liability company
("WilTel"), with its principal place of business at One Technology Center
TC-13S, Tulsa, Oklahoma 74103, and Universal Access, Inc., a Delaware
corporation ("Customer"), with its principal place of business at Sears Tower,
223 S. Wacker, Suite 600, Chicago, Illinois 60606, for the provision of
telecommunications services, subject to this Agreement and as set forth in this
Agreement.

Recitals

WHEREAS, the parties entered into a Carrier Services Agreement 98R0613.00
("CSA") as of June 29, 1998.

WHEREAS, the parties entered into a Master Services Agreement dated October 1,
2001, contract number 01R1966.00, as amended (collectively, the "MSA").

WHEREAS, WilTel and Customer are parties to that certain Universal Transport
Exchange License Agreement entered into October 1, 2001 (the "Collocation
Agreement"), as well as the Amended and Restated Universal Transport Exchange
License Agreement, entered into contemporaneously herewith.

WHEREAS, WilTel and Customer are parties to that certain Settlement Agreement
entered into contemporaneously herewith, pursuant to which the parties settle
certain disputes arising under the CSA and MSA.

WHEREAS, WilTel and Customer desire to amend and restate the MSA.

Article 1. Agreement of the Parties

1.1Services.  Customer may order from WilTel telecommunications services which
may consist of either or both WilTel' Services or Third Party Services,
(sometimes referred to herein collectively or individually, as the
"Service(s)"). "WilTel' Services" shall consist of those Services described in
the attached service schedule(s) ("Service Schedule(s)"), as indicated in Table
A (check as applicable), but does not include any Services which constitute
Third Party Services as defined below in Section 1.2. All Services shall be
provided upon the terms and conditions that are set forth in this Agreement,
including any applicable Service Schedule and process and procedure as set forth
in Exhibit B. This Agreement will supercede the MSA and all Services provided
pursuant to the MSA will now be provided under this Agreement, provided however,
notwithstanding anything in this Agreement to the contrary, the current existing
pricing for the Existing Circuits, as defined below, shall not be superceded and
shall remain in effect until a) the circuit is terminated in accordance with the
provisions of this Agreement, or b) the parties agree upon modified pricing. The
circuits provided under the MSA which will now be provided pursuant to this
Agreement are hereby referred to as the "Existing Circuits". The circuits, which
have been ordered under the MSA but are not in service (the "Pending Circuits")
will be priced under this Agreement. All Services are subject to availability
and approval of Customer's credit by WilTel.

WilTel Communications        Proprietary & Confidential
AGREEMENT (06/25/01)

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Table A               Schedule 1 ý   Private Line Service   Schedule 9 ý  
International Backhaul Services Schedule 2 ý   Optical Wave Service   Schedule
10 ý   International Private Line Service Schedule 3 ý   ATM Service   Schedule
11 o   Collocation Service Schedule 4 o   Dedicated Internet Service   Schedule
12 o   CNMS Service Schedule 5 o   Frame Relay Service   Schedule 13 ý   Metro
Access Service Schedule 6 o   Network Timing Services   Schedule 14 ý   Metro
Access Optical Wave Services Schedule 7 o   Switched Voice Service   Schedule 15
ý   Private Line Quality of Service Schedule 8 o   Carrier Voice Services  
Schedule 17 ý   Managed Services

1.2Third Party Services.  WilTel may arrange on behalf of Customer for services
to be provided by a third party ("Third Party Services"). For instance, Third
Party Services may include Third Party Local Access Services, third party
provided interexchange services, and third party provided international service.
Third Party Local Access Services shall be arranged pursuant to Article 4 of
this Agreement. When Customer requests international service, WilTel may arrange
for the foreign end of the Service or for a portion of the foreign end of the
Service to be provided by a third party carrier licensed in the relevant foreign
point. In some cases, WilTel may be unable to, and Customer may be required to,
arrange the foreign end of such Service with a foreign carrier. Although this
Agreement governs the terms of WilTel' arrangement of Third Party Service, the
service level parameters and related warranties (if any), pricing, surcharges,
outage credits, required commitments, termination liability, and other
service-specific terms of the Third Party Service shall be those of the provider
of the Third Party Services ("Third Party Provider").

Article 2. Effective Date, Term, Competitive Pricing

2.1Term of Agreement.  This Agreement shall become effective on the date first
written above ("Effective Date") and shall continue through October 1, 2011
("Term"). This Agreement shall automatically renew for month to month periods
("Renewal Terms") unless either party gives written notice to the other party
that the Agreement will not be renewed, such notice to be delivered at least
thirty (30) days before the end of the Term or the then current Renewal Term.

2.2Service Order Term.  

a.Each Service Order placed under this Agreement shall have its own term, as
indicated on such Service Order ("Service Term"). At the end of the Service Term
for any Service Order (as defined in Section 3.1(a)), such Service Order shall
continue on a month-to-month basis ("Extension Period") unless either party
gives written notice to the other that the Service described in such Service
Order shall be disconnected, such notice to be delivered at least thirty
(30) calendar days before the end of the Service Term, or if during the
Extension Period, then upon at least thirty (30) calendar days' written notice.
Customer's charges, as set forth in this Agreement, for Services provided by
WilTel at the expiration of the Service Term shall continue to apply to
Customer's Service throughout any Extension Period, unless modified pursuant to
the terms of this Agreement. Unless Customer is in default, any Service being
provided at the time of termination of this Agreement shall continue upon the
terms and conditions of this Agreement until end of the Service Term or any
applicable Extension Period Service as specified in the applicable Service Order
or until such Service Order is terminated pursuant to the second sentence of
this Section 2.2; provided, however, that Customer may not order any new Service
until Customer and WilTel have entered into a new agreement or mutually agreed
in writing to extend this Agreement.

b.The original Service Term for all circuits listed on Exhibit A hereto with a
term of greater than 12 months (the "Modified Circuits") is hereby decreased to
6 months ("Modified Service

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Term"). The commencement date of the Modified Service Term for the Modified
Circuits is January 1, 2003.

2.3Competitive Pricing.  WilTel may provide on-net, private line POP to POP
pricing for substantially similar services within *** of the lowest quote
provided to WilTel by Customer, using *** as the control group (the "Carrier
Control Group"), ***. The parties agree to review the Carrier Control Group on
an as needed basis. The Carrier Control Group may be altered if mutually agreed
to by the parties. If the lowest quote for substantially similar services that
Customer receives from the Carrier Control Group is more than *** lower than the
applicable WilTel's rates, ***, the Customer will give WilTel the opportunity to
submit a revised price. If WilTel (1) offers a rate within *** of such lowest
quote, (2) Customer's end-user purchases the service, and (3) WilTel's terms and
conditions (including technical specifications) are the same as or more
advantageous than Customer's alternatives for the same service, then, with
respect to *** of the offers ("*** Threshold"), WilTel's services will be
selected by Customer. For purposes of determining whether a private line POP to
POP service is substantially similar, the parties will consider: (1) type of
service, (2) city pair, (3) diversity, (4) protected or unprotected, and
(5) term. For the purpose of this Agreement *** of the lowest price shall mean
the monthly recurring charges based on the Voice Grade Equivalent/VH miles.
WilTel may audit Customer's applicable business records one (1) time per year to
ensure Customer's compliance with this Section 2.3. WilTel will give Customer at
least ten (10) business days notice prior to any such audit, and Customer shall
make available to WilTel during normal business hours all applicable records and
personnel necessary for WilTel to perform the audit; provided that Customer may
redact certain information that is confidential and instead provide a
certification acceptable to WilTel that provides such information necessary for
WilTel to verify Customer's compliance with this Section 2.3. Notwithstanding
any other provision herein, if complying with the *** Threshold would cause
Customer to be in violation of any other agreement(s), the *** Threshold will be
reduced to the extent necessary for Customer not to be in violation of such
agreement(s); provided that in no event with the *** Threshold be reduced to
less than ***.

Article 3. Ordering and Provisioning of Service

3.1Service Orders.  

a.All Services shall be requested on WilTel' Service Order forms in effect from
time to time or on Customer's forms which have been previously accepted in
writing by WilTel ("Service Order(s)"). Service Orders shall be transmitted and
processed in accordance with the terms and conditions of this Agreement as well
as any procedures set out in the applicable Service Schedule for a specific
Service. WilTel shall accept any Service Order under this Agreement that
complies with the terms and conditions set forth herein, subject to availability
and credit approval at the time Customer places such Service Order.

a.A Service Order is deemed accepted (subject to availability) by WilTel when
WilTel' Service Delivery department transmits an electronic Order Confirmation
Document ("OCD") to Customer indicating that WilTel is processing Customer's
order.

b.When a Service Order is placed, Customer will designate: (i) a requested start
date ("Requested Start Date") for the Service; (ii) the desired term of the
Service; (iii) the specific city pairs, if applicable; (iv) the bandwidth, if
applicable; and (v) any other information necessary to enable WilTel to provide
the Service. WilTel will make reasonable efforts to meet Customer's Requested
Start Date. In the event that WilTel is unable to meet Customer's Requested
Start Date, WilTel will notify Customer of the date when WilTel believes the
Service will be available and Customer's Requested Start Date will be changed to
reflect the number of days of delay or advance, as appropriate. Failure of
WilTel to deliver by Customer's

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Requested Start Date shall not constitute a default under this Agreement and
WilTel shall not be liable to pay to Customer any penalties or damages for
WilTel' failure to meet Customer's Requested Start Date, except for the delay
credits set forth in Section 3.4.

d.Any terms or conditions contained in Customer's acknowledgement or Service
Order or elsewhere which conflict with, are different from, or are in addition
to, the terms and conditions in this Agreement are hereby objected to by WilTel
and shall not constitute part of this Agreement. No action by WilTel (including,
without limitation, provision of Services to Customer pursuant to such Service
Order) shall be construed as binding or estopping WilTel with respect to such
term or condition.

3.2Turn Up Acknowledgement.  WilTel will issue to Customer an electronic notice
that Service is available ("Turn Up Acknowledgement" or "TUA"). The TUA will
indicate that the relevant Service ordered through WilTel has been tested by
WilTel and that the WilTel' Service meets or exceeds the Technical
Specifications set forth in the relevant Service Schedule. The TUA will also set
forth the date Customer's Service was available for use by Customer and upon
which WilTel shall commence charging for the Service, provided that absent
Customer's written acknowledgement, in no event will WilTel begin to invoice for
the Services prior to the Customer's Requested Start Date ("Circuit Effective
Billing Date").

3.3Service Acceptance.  Customer shall be deemed to have accepted Service and
WilTel shall begin billing for the Service as of the Circuit Effective Billing
Date, provided that, if Customer notifies WilTel' Service Delivery Department in
writing within three (3) business days of the Circuit Effective Billing Date
that WilTel' Service is in material non-compliance with the applicable Technical
Specifications and if, upon investigation, such material non-compliance is not
due to Customer fault, then WilTel shall correct the non-compliance and make the
appropriate adjustment to Customer's billings under this Agreement. The
occurrence of any such non-compliance shall not constitute a default under this
Agreement and WilTel shall not be liable to pay to Customer any penalties or
damages resulting from any such non-compliance except for delay credits as set
forth in Section 3.4, if applicable. Charges for Service begin accruing upon
Circuit Effective Billing Date, regardless of whether Customer is actually using
the Services, or is ready to test and accept the Services.

3.4Implementation Intervals Remedies.  

a.It is WilTel's goal to provision WilTel Services within it standard service
implementation intervals as set forth in the Schedule applicable to each type of
Service. WilTel's standard service implementation intervals apply only to WilTel
Private Line, Optical Wave and Metro Access Services and not Third Party
Services.

b.In the event WilTel fails to make Services available within its standard
service implementation interval as stated in the applicable Schedule, Customer
shall receive a pro-rata credit of the monthly recurring charge for such Service
based on the number of days Service is delayed, such credit not to exceed ***.
Customer shall not receive such credit and WilTel shall not be liable for any
delay, if delay is due to the Customer, Third Party Local Access provider or as
a result of a Force Majeure event as defined in Section 8.5 hereof.
Notwithstanding anything to the contrary in this Agreement, in no event shall
WilTel' failure to deliver William's Service within the periods set forth in the
attached Schedules constitute a default under this Agreement.

c.In the event WilTel fails to make Services available within its standard
Service implementation interval as stated in the applicable Schedule Customer
may cancel the Service Order for late delivery. Customer shall not have the
right to cancel and WilTel shall not be liable for any delay, if delay is due to
the Customer, Third Party Local Access provider or as a

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result of a Force Majeure event as defined in Section 8.5 hereof.
Notwithstanding anything to the contrary in this Agreement, in no event shall
William's failure to deliver William's Service within the periods set forth in
the attached Schedules constitute a default under this Agreement.

d.Customer may either exercise its right to a delay credit pursuant to
subsection (b) above or exercise it right to cancel the delayed Service pursuant
to subsection (c) above but may not exercise both remedies. Customer agrees that
the delay credit or the right to termination as set forth above is Customer's
sole remedy and WilTel' sole liability in the event of any delay in providing
such Service.

e.Annual Implementation Interval Review.    WilTel agrees that it will, upon the
request of Customer and no more often than annually, review the actual
implementation intervals set forth in the attached Service Schedules, and may
adjust installation intervals in accordance with:

i)prevailing market implementation intervals at the time of the review; and

ii)implementation intervals as published by other suppliers, delivering
comparable telecommunication services that are substantially similar to the
range of service offered by WilTel under this Agreement.

If the parties agree to any such adjustment, such adjustment shall be effective
upon written amendment and shall not apply to orders, which have already been
submitted by Customer and accepted by WilTel.

3.5Change of Service Order Date.  Customer may request a delay in the Start Date
of an order, when WilTel receives the delay request a minimum of *** days prior
to the due date and the requested delay does not exceed *** cumulative calendar
days from the Service Orders initial Start Date. When Customer has delayed a
Service Order for the maximum *** cumulative calendar days, the order may not be
delayed again by Customer. Once the maximum *** day delay has been achieved,
Customer has the option to (a) accept the billing for the Service Order, or
(b) cancel the Service Order and pay the applicable cancellation charges for the
facilities ordered. The billing or cancellation is effective on the ***
cumulative calendar day of the delay. If Customer elects to accept billing the
installation will be completed as soon as reasonably practical after Customer
advises WilTel that the installation can be completed.

Article 4. Third Party Local Access Services

4.1Third Party Local Access Services.  WilTel may obtain "Third Party Local
Access Service" on behalf of Customer, which is defined as the
telecommunications facilities or services connecting a Customer-designated
termination point to a point of presence ("POP") designated by WilTel. The term
Third Party Local Access Service, as used throughout this Agreement, may include
both domestic U.S. and foreign Third Party Local Access Service. Customer shall
execute a Letter of Agency, in a form provided by WilTel and agreed to by
Customer authorizing WilTel to interact directly with the Third Party Local
Access Service provider(s) to obtain the Third Party Local Access Service.
Customer shall pay all charges including, without limitation, monthly charges,
usage charges, installation charges, non-recurring charges, or applicable
termination/cancellation charges, of the Third Party Local Access Service
provider(s).

4.2WilTel' Provisioning, Testing, and Charging for Third Party Local Access
Services.  For Third Party Local Access Services ordered by WilTel, WilTel shall
provision and conduct the initial testing of an interconnection between the
WilTel' Service set forth in the Service Order and the Third Party Local Access
Service. WilTel shall coordinate the installation of the Third Party Local
Access Service with the WilTel' Service. Third Party Local Access Service
charges shall accrue at the

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then-current tariff rate (or the standard published rate, if there is no tariff
rate) of the Third Party Local Access Service provider. If the applicable rate
for Third Party Local Access Service is changed by the Third Party Local Access
Service provider, such changes will be passed through to, and be borne by,
Customer. In the event WilTel' Services are not ready at the same time as the
WilTel' ordered Third Party Local Access Service, WilTel will not begin billing
Customer for such Third Party Local Access Services until the related WilTel'
Services are turned up.

4.3Customer Ordered Third Party Local Access Service.  On a prospective basis
beginning with the first order after the Effective Date of this Amendment, where
Customer orders a POP to POP circuit and is providing its own Third Party Local
Access Services from a vendor who has established entrance facilities in
WilTel's POP ("Approved Vendor"), WilTel will use commercially reasonable
efforts to include the cost of the dedicated entrance facilities on the Service
Order if Customer provides the name of the Approved Vendor in advance in
writing. If Customer desires to order Third Party Local Access Services from
someone other than an Approved Vendor, Customer must get WilTel's prior written
permission, which permission shall not be unreasonably withheld, conditioned or
delayed, and WilTel will include the cost of the dedicated entrance facilities
on the Service Order. In any such event, the Third Party Local Access Service
provider shall directly bill Customer for such Services. If WilTel provides the
Third Party Local Access Services, Customer will not be required to pay a
separate dedicated entrance facility charge to WilTel. Customer shall ensure
that the Customer-ordered Third Party Local Access Services are turned up at the
same time as the WilTel's Services. If the Customer-ordered Third Party Local
Access Services are not ready as of the Circuit Effective Billing Date, Customer
shall nonetheless be obligated to pay for WilTel's Services as of the Circuit
Effective Billing Date. Except for this Section 4.3, with respect to dedicated
entrance facility charges, Article 4 of the Agreement shall have no application
to the provision of Metro Private Line Services under Schedule 13.

Article 5. Payment Terms and Charges

5.1Monthly Billing.  WilTel provides and charges for Service on a monthly basis
in U.S. dollars. Usage sensitive charges are billed in arrears and fixed monthly
recurring charges, if any, are billed one (1) month in advance. Unless WilTel
requires payment in advance, charges for installation charges and other
non-recurring charges shall be billed in WilTel' next invoice cycle and are due
and payable in accordance with section 5.2 below.

5.2Due Date and Invoice.  All amounts stated on each monthly invoice are due and
payable in U.S. dollars within thirty (30) calendar days of the date of the
receipt of the invoice ("Due Date"). Customer agrees to accept delivery of such
invoice electronically via e-mail. Customer agrees to remit payment via
Automated Clearinghouse ("ACH") or wire transfer to Williams Communications, LLC
in care of: Bank of Oklahoma, Tulsa, OK, ABA # 103900036, Account # 010649443
(Williams Communications, LLC), or such other bank or account as WilTel may in
writing direct Customer to remit payment. In the event Customer fails to make
full payment of undisputed amounts by the Due Date, Customer shall also pay a
late fee in the amount of the lesser of (i) one and one-half percent (11/2%) per
month or (ii) the maximum lawful monthly rate under applicable state law, of the
unpaid balance which amount shall accrue from the date of the invoice. Customer
acknowledges and understands that all charges are computed exclusive of any
Additional Charges (as defined in Section 5.8(a)). Such Additional Charges shall
be paid by Customer in addition to all other charges provided for herein.

5.3Adjustments.  WilTel may make billing adjustments for WilTel Services for
one-hundred-eighty (180) calendar days after the Due Date or after the date
Service is rendered, whichever is later. WilTel may make billing adjustments for
Third Party Services for a period of two (2) years.

5.4Intentionally Omitted.  

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5.5Billing Disputes.  If Customer in good faith disputes any portion of an
invoice it must pay the undisputed amount of the invoice on or before its Due
Date and provide written notice to WilTel of the billing dispute within sixty
(60) calendar days thereafter. Such notice must include documentation
substantiating the dispute. Customer's failure to notify WilTel, of a dispute
shall be deemed to be Customer's acceptance of such charges. The parties will
make a good faith effort to resolve billing disputes as expeditiously as
possible. If a dispute is resolved in favor of Customer, Customer shall receive
a credit on their next bill for the amount determined to be due, if not, the
additional sum due shall be payable no later than thirty (30) days following a
determination that it is due.

5.6Validation of Credit.  WilTel reserves the right to determine the
creditworthiness of Customer through available verification procedures or
sources and Customer hereby consents to WilTel obtaining credit information
regarding the Customer, its owners and affiliates.

5.7WilTel' Right to Assurance.  

a.If at any time WilTel deems Customer to be uncreditworthy, or there is a
material adverse change in Customer's creditworthiness or a material adverse
change in Customer's financial position, then in addition to any other remedies
available to WilTel, WilTel may elect, in its sole discretion, to demand
reasonable assurance of payment from Customer, including, without limitation,
prepayment for Services, weekly payment for Services, the posting of a Letter of
Credit ("LOC") under terms similar to the terms or the prior LOC (excluding
amount), the posting of a deposit and executing an agreement with WilTel
regarding the use of any such deposit ("Deposit Agreement"), such Deposit
Agreement to be in form and substance acceptable to WilTel, or other assurance
acceptable to WilTel in its sole discretion. Notwithstanding anything to the
contrary and without limiting any of WilTel's rights herein, WilTel will review
Customer's financial position upon the earlier of i) three months after the
Effective Date, or ii) when less than *** of the *** Prepayment, as defined in
Section 5.10, is remaining; and if Customer's financial position, in WilTel's
sole discretion, has not materially improved from the Effective Date, WilTel
reserves the right to demand reasonable assurance of payment. Notwithstanding
the foregoing, WilTel will not exercise its rights to demand reasonable
assurance of payment from Customer until less than *** is remaining in the ***
Prepayment.

b.A material adverse change in Customer's creditworthiness shall include, but
not limited to: (i) Customer's default of its obligations to WilTel under this
Agreement; (ii) failure of Customer to make full payment of charges due
hereunder on or before the Due Date on two (2) or more occasions during any
period of twelve (12) or fewer months; (iii) acquisition of Customer (whether in
whole or by majority or controlling interest) by an entity which is insolvent or
which is subject to insolvency proceedings, or which owes past due amounts to
WilTel or any WilTel affiliate, or which is a materially greater credit risk
than Customer; or (iv) the legal insolvency of Customer.

c.If Customer's financial statements are not public information or have not
otherwise been made available to WilTel, then, upon WilTel' request, Customer
shall provide its most current audited and unaudited financial statements.

d.If Customer has not provided WilTel with (i) its financial statements within
five (5) calendar days of WilTel' request therefore and Customer's financial
statements are not public information or (ii) in the event of a WilTel demand
for assurance of payment, assurance satisfactory to WilTel within five
(5) calendar days of WilTel' notice of demand for such assurance, then, in
addition to any other remedies available to WilTel, WilTel shall have the
option, in its sole discretion, to exercise one or more of the following
remedies: (x) cause the start of any Service described in any previously
executed Service Order to be delayed pending

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receipt of such financial statements or of the satisfactory assurance; or
(y) decline to accept a Service Order or other requests from Customer to provide
Service; or (z) suspend all or any portion of the Service then being provided
after giving Customer five (5) calendar days prior written notice. If Customer
provides satisfactory assurance during the five (5) calendar day notice period,
WilTel will not suspend any Service.

5.8Charges for Services.  Except for monthly recurring charges set forth on the
Rate Sheet or the applicable Quote,, all charges for Services shall be as set
forth in this Agreement and may be established on an individual case basis as
contemplated herein and shall be those in effect as of the date WilTel accepts
the Service Order unless the charges are otherwise specifically set forth in
attached Service Schedules. Customer shall be liable for all charges (recurring
and non-recurring) for Services provided by WilTel and by Third Party Providers.
Additionally, Customer shall incur charges in those circumstances in which
extraordinary costs and expenses are generated by Customer and reasonably
incurred by WilTel beyond those normally associated with the Services, including
but not limited to, the following: (a) Customer's request to expedite Service
availability to a date earlier than WilTel' published installation interval or a
previously accepted start date; (b) Service redesign or other activity
occasioned by receipt of inaccurate information from Customer;
(c) reinstallation charges following any suspension of the Service for cause by
WilTel; and (d) Customer's request for use of routes or facilities other than
those selected by WilTel for provision of the Service.

5.9Rate Sheet.  For those telecommunication Services identified in the attached
Service Schedules, WilTel will provide Customer with a schedule that sets forth
monthly recurring rates and charges for the Services (the "Rate Sheet"). WilTel
will update the Rate Sheet quarterly. The monthly recurring rates and charges
set forth in the Rate Sheet will apply for the requested Service ordered by
Customer and accepted by WilTel, unless the parties agree to different rates and
charges, which will be determined on an individual case basis ("ICB"). In any
event the applicable rates and charges will be set forth on Customer's Service
Order.

5.10Credit. Concurrent with the execution of this Agreement, the parties are
executing a Settlement Agreement, which provides that WilTel will submit to the
issuing bank a written notice canceling Customer's existing *** Letter of Credit
("Letter of Credit") issued in favor of WilTel. On the same day Customer wire
transfers WilTel *** as a prepayment for Services (the "*** Prepayment"), WilTel
will return the Letter of credit to the issuing bank together with a letter
unconditionally and immediately canceling the Letter of Credit, causing the ***
to be returned to Customer. In the first billing month after the *** Prepayment
is received and in each month thereafter, WilTel will apply a credit equal to
the monthly recurring rates and charges for Services invoiced to Customer from
WilTel, until the *** Prepayment is fully used.

5.11Taxes. 

a.If any sales taxes, valued added taxes or other charges or impositions are
asserted against WilTel after, or as a result of, Customer's use of Services by
any local, state, national, international, public or quasi-public governmental
entity or foreign government or its political subdivision, including without
limitation, any tax or charge levied to support the federal Universal Service
Fund contemplated by the Telecommunications Act of 1996, or any state or foreign
equivalent ("Additional Charges"), Customer shall be solely responsible for such
Additional Charges. Customer agrees to pay any such Additional Charges and hold
WilTel harmless from any liability or expense associated with such Additional
Charges.

b.If Customer has been granted a tax exemption for taxes in a given
jurisdiction, then WilTel shall not bill Customer for such taxes if Customer
provides WilTel with written verification of such tax exemption acceptable to
WilTel and properly issued by the relevant taxing jurisdiction. Service provided
hereunder shall also not be subject to contribution

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to any universal service program if Customer provides WilTel with written
verification or exemption certificate, acceptable to WilTel for the relevant
jurisdiction, that the Service will be resold by Customer and that the revenues
from such resale shall be subject to the universal service program's
contribution requirements. If any jurisdiction, in conjunction with any
universal service program, assesses any charges against, or seeks any
contributions from, WilTel in connection with any of the Service provided
hereunder, Customer shall indemnify WilTel against any such assessments or
contributions.

Article 6. Suspension and Termination

6.1Suspension Of Service.  

a.In the event payment in full is not received from Customer on or before the
Due Date, WilTel shall have the right: (i) upon providing a minimum of five
(5) business days written notice (the "Suspension Notice"), to suspend or block,
at any time after such Suspension Notice, all or any portion of all the Services
then being provided to Customer; and (ii) to immediately place any pending
Service Orders on hold, and to decline to accept any new Service Orders or other
requests from Customer to provide Service commencing on the day that WilTel
issues the Suspension Notice to Customer. If WilTel receives the entire past due
amount within the five (5) business days notice period, then Customer's Service
shall not be suspended. WilTel may continue such suspension until such time as
Customer has paid in full all charges then due, including any reinstallation
charges and/or late fees as specified herein. Following such payment, WilTel
shall reinstate Customer's Services subject to WilTel' Right to Assurance as
provided above in Section 5.6.

b.Suspension of Services as set forth in this Section shall not affect
Customer's obligation to pay for the Services.

6.2Termination of Service.  

a.In addition to its other termination rights hereunder, and with respect to all
Services, either party may immediately disconnect any Services in whole or in
part if WilTel determines that such Services violate any law, statute, or
ordinance, including the Communication Act of 1934 (as amended), or that the
imposition of any statute, or promulgation of any rule, regulation, or order of
the Federal Communications Commission or other governing body makes WilTel'
performance under this Agreement commercially impracticable.

b.Except where Customer is in default, WilTel recognizes that, upon the
expiration or termination of this Agreement or any Service as defined in
Section 2.1 and 2.2, a successor vendor may be retained to provide replacement
telecommunication service to Customer. During Customer's migration to the
successor vendor following the expiration or termination of this Agreement or a
Service, WilTel shall reasonably cooperate with Customer and the successor
vendor in the development and execution of a plan for the orderly and efficient
transition to the successor vendor.

6.3Termination of Agreement.  

a.Termination of Agreement For Cause.    Except for an event of non-payment by
Customer hereunder which is addressed in subsection (b) below, either party may
terminate this Agreement if the other is in default of any material obligation
contained herein, which default has not been cured within thirty (30) calendar
days following the receipt of notice of such default setting forth the specifics
of such default. The failure of any particular Service or Services to comply
with the Technical Specifications set forth individually for each Service in the
attached Service Schedules shall not be deemed a default by WilTel, but may
obligate WilTel to provide Customer with Outage Credits, if applicable, under
the relevant Service

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Schedule. Such Outage Credits and right to terminate for excessive outages, if
applicable, shall be Customer's sole and exclusive remedy for any failure of the
Services. Termination of this Agreement for cause does not relieve Customer of
any obligations to pay WilTel for charges accrued for Service which has been
furnished up to the time of termination nor does it relieve the Customer of all
applicable cancellation and/or disconnection charges.

b.Termination of Agreement For Non-payment.    In the event any amount payable
by Customer has not been received in full by WilTel on or before the Due Date
(except for amounts disputed by Customer in accordance with Section 5.4 Billing
Disputes), WilTel shall have the right to terminate this Agreement ten
(10) calendar days' written notice to the Customer. Termination of this
Agreement pursuant to this subsection shall not relieve Customer of any
obligations to pay WilTel for charges accrued for Service which has been
furnished up to the time of termination nor does it relieve the Customer of all
applicable cancellation and/or disconnection charges. The remedies available to
WilTel for any such termination of the Agreement for non-payment shall be to
collect from Customer all amounts due under this Agreement including but not
limited to all applicable Early Termination, cancellation and/or disconnection
charges.

c.Termination Due To Government Action.    Notwithstanding the foregoing, and
upon written notice consistent with the mandate put forth by the applicable
governmental authority or commission, to the other party, either Customer or
WilTel shall have the right, without incurring an Early Termination Charge or
other liability to the other party, to immediately disconnect the affected
portion of any Service, if WilTel is prohibited by governmental authority from
furnishing or Customer is prohibited from using such portion, or if any material
rate or term contained herein and relevant to the affected portion of any
Service is substantially changed by order of the highest court of competent
jurisdiction to adjudicate the matter, the Federal Communications Commission, or
other local, state, federal, or foreign government authority.

6.4Termination Charges.  

a.Early Termination Charge.    If Customer desires to disconnect any Service
after installation, Customer may do so by providing written notification to
WilTel thereof thirty (30) days in advance of the effective date of the
disconnection. In the event of such disconnection, Customer shall pay to WilTel
an "Early Termination Charge" in an amount equal to the monthly recurring charge
for such disconnected Service multiplied by the number of months in the relevant
Service Term, less the charges for such Service actually paid by Customer
through the effective date of the disconnection plus any non-recurring payments
not yet paid by Customer together with any termination liability associated with
Third Party Local Access Service or any other Third Party Service.

b.

        I.    Portability.    Provided that Customer is in compliance with the
terms and conditions of the Agreement, Customer shall have the option to
disconnect a circuit wholly on WilTel's owned and operated network prior to the
completion of its minimum service term and order one or more new circuits also
wholly on WilTel's owned and operated network as a replacement, subject to
availability, without incurring the Early Termination Charge set forth above.
For purposes of this Agreement, WilTel's owned and operated network will include
facilities leased to WilTel under an IRU agreement. The replacement circuit(s)
must be for the same or greater remaining *** as the circuit being replaced and
the replacement circuit must be ordered by Customer within *** days after the
date on which Customer provides WilTel with written notice of termination. The
value of the circuits listed on Exhibit A shall be calculated after the original
circuit terms have been decreased to 6 months in accordance with

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***Certain information on this page has been omitted and filed separately with
the Commission. Confidential treatment has been requested with respect to the
omitted portions.

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Section 2.2(b) above. The minimum circuit term for replacement circuit(s) will
be *** months. If Customer exercises this portability option, Customer will be
liable for, if applicable: (i) all termination liability charges for Third Party
Local Access Services or any other Third Party Services or provided facilities
that are impacted by the replacement of the circuit; (ii) installation charges
due to WilTel as set forth in the attached Service Schedules; and (iii) any one
(1) time Third Party Local Access Service charges and the new monthly recurring
Third Party Local Access Service charges.

        II.    Service Term Adjustment.    After any Existing Circuit has been
in effect for a period of at least twelve (12) months and provided that Customer
is in compliance with the terms and conditions of the Agreement, Customer shall
have the option to adjust the initial Service Term to a period equal to six
months ("Adjusted Service Term"). The Adjusted Service Term applicable to an
Existing Circuit(s) will start concurrently with the turn up and acceptance date
of the new circuit or circuit(s). Customer shall effectuate the adjustment by
placing a Service Order for a new circuit(s) wholly on WilTel' owned and
operated network, subject to availability. For purposes of this Agreement WilTel
owned and operated network will include facilities leased to WilTel under an IRU
agreement. The new circuit(s) must be for: a) a minimum Service Term of twelve
months, b) the same or greater total Service Term value, and c) the same or
greater monthly recurring charge as the adjusted Existing Circuit(s). If
Customer exercises this Service Term adjustment option, it will only be
applicable to the inter-exchange portion of the adjusted circuit that is wholly
on WilTel owned and operated network. Customer remains liable for Third Party
charges including, without limitation, any Third Party local access termination
charges, which will be passed through to the Customer. The new circuits shall be
subject to ordering and provisioning as provided in Article 3 herein. For
example: If Customer has (3) DS-3s which have been in effect for at least
12 months with 24 months remaining on the Service Term and the remaining Service
Term value of the DS-3s is $60,000, Customer may adjust the Service Term of
those DS-3s to 6 months by placing a Service Order and by accepting Service of a
circuit or circuits pursuant to Section 3.3 herein, that have: 1) a twelve month
term and 2) a total MRC greater than or equal to those DS-3s and 3) a Service
Term value greater than or equal to $60,000. The Service Term value shall be
determined by multiplying the monthly recurring charge by the number of months
remaining in the original Service Term for the applicable Existing Circuit(s).

c.Service Migration.    If customer wishes to upgrade to a higher bandwidth of
service, Customer has forty-five (45) days from the turnup of the higher
bandwidth circuit in which to groom existing circuits onto the higher bandwidth
of service. During this forty-five (45) day period, the Customer will not be
billed for the higher bandwidth. After the forty-five (45) day period from
circuit turnup, billing for the higher bandwidth circuit commences, whether or
not if the existing circuits have been disconnected and groomed onto the larger
bandwidth.

d.Technology Migration.    If, as a result of technological changes or
improvements, Customer's services provided under the Agreement may be changed or
improved upon, WilTel agrees to allow Customer to migrate to new services as it
applies under Section 6.4 (b) Portability.

f.Liquidated Damages.      Customer agrees that the actual damages in the event
of a disconnection pursuant to this Section 6.4 would be difficult or impossible
to ascertain, and that the Early Termination Charges, if any, in this
Section 6.4 are intended to establish liquidated damages only and are not
intended as penalties.

Article 7. Limitation of Liability

        IN THE EVENT OF ANY BREACH OF THIS AGREEMENT OR ANY FAILURE OF THE
SERVICES, WHATSOEVER, NEITHER WILTEL NOR ANY WILTEL' PROVIDER (AS DEFINED IN

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***Certain information on this page has been omitted and filed separately with
the Commission. Confidential treatment has been requested with respect to the
omitted portions.

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SECTION 8.4 INDEMNITY) SHALL BE LIABLE FOR ANY DIRECT, INDIRECT, CONSEQUENTIAL,
SPECIAL, ACTUAL, INCIDENTAL, PUNITIVE OR ANY OTHER DAMAGES, OR FOR ANY LOST
PROFITS OF ANY KIND OR NATURE WHATSOEVER, EVEN IF WILTEL OR THE WILTEL PROVIDER
HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE OR LOSS. THIS LIMITATION ON
DIRECT DAMAGES SHALL NOT LIMIT CUSTOMER'S RIGHT TO RECEIVE OUTAGE OR DELAY
CREDITS IF APPLICABLE AND SHALL NOT LIMIT WILTEL LIABILITY FOR INDEMNITY OR
CONFIDENTIALITY OBLIGATIONS PURSUANT TO THIS AGREEMENT. EXCEPT FOR AMOUNTS DUE
PURSUANT TO THIS AGREEMENT, IN NO EVENT SHALL CUSTOMER BE LIABLE FOR ANY
INDIRECT, CONSEQUENTIAL, SPECIAL, INCIDENTAL, OR, PUNITIVE DAMAGES, OR FOR ANY
LOST PROFITS OF ANY KIND OR NATURE WHATSOEVER, EVEN IF WILTEL PROVIDER HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE OR LOSS.

Article 8. General

8.1Exclusive Remedies.  Except as otherwise specifically provided for herein,
the remedies set forth in this Agreement comprise the exclusive remedies
available to either party at law or in equity.

8.2Warranty and Disclaimer of Warranty.  WILTEL MAKES NO WARRANTY WITH RESPECT
TO THE SERVICE OR ITS PERFORMANCE UNDER THIS AGREEMENT UNLESS EXPRESSLY SET
FORTH IN THIS AGREEMENT, INCLUDING THE ATTACHED SERVICE SCHEDULES. WILTEL MAKES
NO WARRANTY WITH RESPECT TO SWITCHED AND CARRIER VOICE SERVICES. WITH THE
EXCEPTION OF THE EXPRESS WARRANTIES, IF ANY, SET FORTH IN THE SERVICE SCHEDULES,
WILTEL DISCLAIMS ALL WARRANTIES WHETHER EXPRESS OR IMPLIED INCLUDING WITHOUT
LIMITATION THE IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. NO WARRANTY IS MADE OR PASSED ON WITH RESPECT TO ANY THIRD PARTY
SERVICES.

8.3Compliance with Law.  Each Party agrees that its provision of and/or use of
the Services shall be in accordance, and comply, with all applicable laws,
regulations, and rules and that it shall obtain all approvals, consents and
authorizations necessary to conduct its business and initiate or conduct any
transmissions over any Services covered by this Agreement. Each Party may,
exercisable in its sole discretion, disconnect any Service or restrict any
transmission, if such actions are reasonably appropriate to assure that is not
in violation of any civil or criminal law, regulation or rule.

8.4Indemnity.  

a.Customer and WilTel shall defend, indemnify and hold harmless the other and
their respective officers, directors, employees, contractors and agents against
and from any and all claims for damage to tangible property or bodily injury,
including claims for wrongful death, to the extent that such claim arises out of
the gross negligence or willful misconduct of the respective indemnifying Party,
its employees, agents, or contractors in connection with this Agreement or the
provision of Services hereunder.

b.Customer and WilTel will defend, indemnify and hold harmless the other Party
and their respective officers, directors, employees, contractors and agents
against and from any loss, debt, liability, damage, obligation, claim, demand,
judgment or settlement of any nature or kind, known or unknown, liquidated or
unliquidated, including without limitation, all reasonable costs and expenses
incurred including all reasonable litigation costs and attorneys' fees
(collectively, "Damages") arising out of, resulting from or based upon any
complaint, claim, action, proceeding or suit of any third party, including any
governmental authority, (a "Claim"), to the extent such Claim arises from or is
based on the indemnifying Party's violation of any law or any rule or
regulation.

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c.Customer will defend, indemnify and hold harmless WilTel and its respective
officers, directors, employees, contractors and agents for all Damages resulting
from any Claims by any third party or end user for who is using the Services
through Customer, including without limitation, any Claims by such end users for
damages arising or resulting from any defect or failure to provide the Services.

d.Customer will defend indemnify and hold harmless WilTel and its respective
officers, directors, employees, contractors and agents for all Damages resulting
from any Claims by any third party arising out of the content transmitted over
WilTel' network or otherwise including but not limited Claims relating to any
violation of copyright law, export control laws, failure to procure any
necessary consents, or that such transmissions are libelous, slanderous, an
invasion or privacy or illegal.

e.If the equipment and facilities used in furnishing the Services to Customer
pursuant to this Agreement infringe any United States copyright, patent, trade
secret or any other intellectual property rights, WilTel shall indemnify, defend
and hold Customer harmless from and against any claims made as a consequence of
any such infringement However, WilTel obligation to indemnify, defend, and hold
harmless Customer will not apply if any such infringement arises due to (a) the
modification or combination of such equipment and facilities with (i) equipment
or facilities furnished by Customer, or (ii) equipment or facilities of WilTel
or its third party supplier's network, or (b) Customer's use of the Services in
violation of this Agreement. Moreover, if the equipment or facilities furnished
by WilTel to provide the Services under this Agreement becomes, or in WilTel
opinion is likely to become, the subject of a claim of infringement, or if
Customer's use of the Services is finally enjoined or in WilTel opinion is
likely to be enjoined, WilTel may in its sole discretion provide alternate
Services which are not subject to the claim of infringement. If WilTel elects
not to provide alternate Service(s), Customer may terminate the Service without
liability for the Early Termination Charge set forth in Section 6.4 of the
Agreement. However, Customer shall be liable for any termination liability
associated with Third Party Local Access Service or any other Third Party
Service associated with such disconnection.

f.The indemnified Party shall promptly notify the indemnifying Party in writing
of any claims, which are subject to the terms of this Section 8.4. The
indemnified Party shall have the right at its own expense to appoint its own
counsel who shall be entitled to participate in any settlement negotiations or
litigation regarding any matter for which it is entitled to be indemnified
hereunder. The indemnifying Party shall not agree to any settlement or consent
to any decree, order or judgment without obtaining the consent of the
indemnified Party which consent shall not be unreasonably withheld.

8.5Force Majeure.  If either party's performance of this Agreement or any
obligation (other than the obligation to make payments) hereunder is prevented,
restricted or interfered with by causes beyond its reasonable control including,
but not limited to, acts of God, fire, explosion, vandalism, cable cut, power
outage, storm or other similar occurrence including rain fade or other
atmospheric conditions, any law, order, regulation, direction, action or request
of any government, or of any department, agency, commission, court, bureau,
corporation or other instrumentality of any one or more of said governments, or
of any civil or military authority, or by national emergencies, insurrections,
riots, wars, acts of terrorism, strikes, lockouts or work stoppages or other
labor, supplier failures, shortages, breaches or delays, then the party that is
unable to perform or meet its obligations due to such causes shall be excused
from such performance on a day-to-day basis to the extent of such prevention,
restriction or interference. The party that is unable to perform or meet its
obligations due to such causes shall use commercially reasonable efforts under
the circumstances to avoid and remove such causes of non-performance and shall
proceed to perform with reasonable dispatch whenever such causes cease. In the
event the force

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majeure event prevents the use of any circuit provided as part of the WilTel'
Services and such force majeure event continues for a period of sixty (60) days,
then either party may disconnect the affected circuit without incurring
liability except for Customer's liability for any charges of a Third Party
Provider that are incurred by WilTel will be passed through to Customer.

8.6Proprietary Information.  

a.WilTel and Customer understand and agree that the terms and conditions of this
Agreement and all documents referenced herein (including invoices to Customer
for Services provided hereunder) are confidential as between Customer and
WilTel. Neither Customer nor WilTel shall disclose such information to any third
party without the prior written consent of the other, except as provided in
Section 8.6(c) below.

b.In addition to the matters covered under clause a. above, when confidential
information is furnished in a tangible form by one party to the other, the
disclosing party shall mark the information in a manner to indicate that it is
considered confidential. When information deemed to be confidential is provided
orally, the disclosing party shall, at the time of disclosure, clearly identify
the information as being confidential. If the disclosing party fails to identify
information as confidential, such disclosing party may correct the omission by
later notice consisting of a writing or statement, and the receiving party shall
only be liable for unauthorized disclosures of such confidential information
made subsequent to said notice. All information identified as confidential
pursuant to this clause b. shall not be disclosed by the receiving party to any
third party without the written consent of the disclosing party, except as
provided in Section 8.6(c) below.

c.The party to whom confidential information is disclosed shall have no
obligation to preserve the confidential nature of such information if it:
(i) was previously known to such party free of any obligation to keep it
confidential; (ii) is or becomes publicly available by other than unauthorized
disclosure; (iii) is developed by or on behalf of such party independent of any
information furnished under this Agreement; or (iv) is received from a third
party whose disclosure does not violate any confidentiality obligation. Each
Party may disclose confidential information regarding its relationship with the
other party to commercial lenders who have specifically agreed to hold such
information in confidence. In addition, a party may disclose confidential
information provided to it by the other party if such disclosure is made
pursuant to the requirement or request of a recognized stock exchange or of a
governmental agency or court of competent jurisdiction to the extent such
disclosure is required by a valid law, regulation or court order, and provided
further, that, prompt notice thereof is given (unless such notice is prohibited
by law) to the disclosing party of any such requirement or request.

8.7Representations.  

a.Unless WilTel specifically offers an intrastate Service as set forth in an
applicable Service Schedule, WilTel requires that more than ten percent (10%) of
the transmissions on each circuit shall be interstate transmissions or foreign
transmissions as those terms are defined in 47 U.S.C. Sections 153(17) and
153(22). WilTel and its affiliates shall not be obligated to make available
intrastate Service, e.g., any Service on a circuit with end points within a
single state or service on a circuit which originates/terminates at points both
of which are situated within a single state unless Customer represents in
writing that such interexchange Service or circuits shall be used to carry more
than ten percent (10%) interstate or foreign telecommunications. If it is
determined at any time that such Service or circuit is subject to regulation by
a U.S. State regulatory agency, the Service or circuit may be provided by WilTel
or its affiliates pursuant to applicable state laws, regulations and applicable
tariffs, or WilTel and its affiliates may discontinue provision of the affected
Service or circuit.

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b.Use of Services.    

(i)Customer represents that it is a telecommunications carrier under the
Communications Act of 1934, as amended or under the laws of the jurisdiction
where it operates. The parties do not contemplate, as of the Effective Date, the
filing of any tariff as to the Services provided under this Agreement, however,
in the event that due to a court or agency ruling, or change in applicable law
or regulation, this Agreement becomes subject to a requirement of an FCC tariff,
then WilTel will file a contract tariff with the FCC incorporating all of the
material terms and conditions of this Agreement, including pricing, and the
parties agree to abide by that contract tariff. Service may also be subject to
tariffs in jurisdictions outside of the United States, and WilTel' reserves the
right to make its provision of Services subject to such tariff terms. Customer
represents that it has taken all actions required by the FCC to operate as a
telecommunications carrier under the Communications Act of 1934, as amended.
Customer may engage in resale of international private lines for the provision
of a switched, basic telecommunication service only upon authorization from the
FCC under Section 214 of the Communications Act of 1934, as amended, and
provided that the private line is used only (i) on a route where Customer
exchanges switched traffic with a foreign carrier that the FCC has determined
lacks market power; or (ii) on any route for with the FCC has authorized the
provision of switched services over international private lines. Service shall
not be used for any unlawful purpose.

(i)Customer is responsible for ensuring that it and its customers comply with
WilTel's Acceptable Use Policy ("AUP") and Customer agrees to be bound by the
AUP as set forth in Exhibit B. Any material violation of the AUP shall
constitute a breach of this Agreement.

c.Customer Facilities.    Customer has sole responsibility for installation,
testing and operation of facilities, services and equipment ("Customer
Facilities") other than those specifically provided by WilTel as part of the
Services as described in a Service Order. In no event will the untimely
installation or non-operation of Customer Facilities relieve Customer of its
obligation to pay charges for the Services after Customer's acceptance or deemed
acceptance.

d.Universal Service Exemption.    During the Term or Renewal Term of this
Agreement, Customer shall provide WilTel, on a semiannual basis, a universal
service exemption certificate within thirty (30) days of the Customer's filing
of the universal service filing made with the appropriate federal agency,
evidencing that the Customer is required to contribute to the federal Universal
Service Fund. Customer agrees that failure to provide such an exemption
authorizes WilTel to begin billing Customer prospectively for Universal Service
Fund contributions pursuant to the applicable contribution factor (revised
quarterly), plus an administrative charge of one percent (1%).

8.8Title to Equipment.  This Agreement shall not, and shall not be deemed to,
convey to the other party title of any kind to any of the transmission
facilities, digital encoder/decoders, telephone lines, microwave facilities or
other facilities utilized in connection with the Services.

8.9Notices.  All legal notices to be sent to a party pursuant to this Agreement
shall be in writing and deemed to be effective upon (i) personal delivery,
(ii) three (3) business days after mailing certified mail return receipt
requested if mailed within the domestic U.S., or (iii) one day after

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mailing by express mail priority, next-day delivery. The Full Business Address
for purposes of notice under this Section as well as telephone voice and
facsimile numbers shall be:

WilTel Communications, LLC
100 South Cincinnati
One Technology Center, 6th Floor
Tulsa, Oklahoma 74103
Telephone: (918) 547-2005
Fax: (918) 547-0460
Attention: Contract Management
 
Universal Access, Inc.
233 South Wacker Drive, Suite 600
Chicago, Illinois 60606
Telephone: (312) 660-5000
Fax: (312) 660-1290
Attention: General Counsel
With a copy to:
General Counsel
WilTel Communications, LLC
One WilTel Center, 41st Floor
Tulsa, Oklahoma 74172
Telephone: (918) 573-5057
Fax: (918) 573-3005
 
For billing issues to:
Universal Access, Inc
23 South Wacker Drive, Suite 600
Chicago, Illinois 60606
Telephone: (312) 881-4140
Fax: (312) 660-6296
Attention: Controller

8.10Written Amendment. Any addition, deletion or modification to this Agreement
shall not be binding on either party except by written amendment executed by
authorized representatives of both parties.

8.11No Venture. The provision of Services shall not create a partnership or
joint venture between the parties. The parties hereto are independent
contractors.

8.12Assignment. Customer shall not assign or otherwise transfer its rights or
obligations under this Agreement without the prior written consent of WilTel,
which shall not be unreasonably withheld. However, Customer may assign or
otherwise transfer this Agreement, upon notice to WilTel, to an entity that
acquires a controlling interest in Customer through assignment, merger, sale or
other transfer (provided that, prior to assignment or transfer, (i) Customer is
not in breach of this Agreement and no amounts due under this Agreement are past
due, (ii) such entity is reasonably determined by WilTel to be at least as
creditworthy as Customer and (iii) that such entity is subject to Section 5.5,
Validation of Credit). Any assignment or transfer of Customer's rights or
obligations inconsistent with this paragraph shall entitle WilTel to terminate
the Services or Third Party Local Access Services provided hereunder at its
option upon ten (10) days prior written notice to Customer in accordance of 6.3
(a).

8.13Choice of Law. This Agreement shall be governed by the laws of the State of
New York, U.S. without regard to choice of law principles.

8.14Interpretation. No rule of construction requiring interpretation against the
draftsman hereof shall apply in the interpretation of this Agreement.

8.15Priority of Agreement and Schedules. In the event of any inconsistency
between or among a Service Order, a Service Schedule, this Agreement and any
applicable tariff, the following order of precedence shall prevail (from highest
priority to lowest): the applicable tariff, if any, this Agreement, a Service
Schedule, a Service Order, and Exhibits.

8.16No Third Party Beneficiary. The provisions of this Agreement are for the
benefit only of the parties hereto, and no third party may seek to enforce or
benefit from these provisions.

8.17Costs and Attorneys' Fees. If a proceeding is brought for the enforcement of
this Agreement or because of any alleged or actual dispute, breach, default or
misrepresentation in connection with

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any of the provisions of this Agreement, the prevailing party shall be entitled
to recover reasonable attorneys' fees and other reasonable costs and expenses
incurred in such action or proceeding in addition to any other relief to which
such party may be entitled.

8.18Severability. If any term or provision of this Agreement shall, to any
extent, be determined to be invalid or unenforceable by a court or body of
competent jurisdiction, then (a) both parties shall be relieved of all
obligations arising under such provision and this Agreement shall be deemed
amended by modifying such provision to the extent necessary to make it valid and
enforceable while preserving its intent, and (b) the remainder of this Agreement
shall be valid and enforceable.

8.19No Waiver. The failure of either party to enforce any provision hereof shall
not constitute the permanent waiver of such provision.

8.20Publicity and References. Subject to Section 8.6 Proprietary Information,
the parties contemplate and agree that publication of information relating to
this Agreement may occur through press releases, articles, interviews, marketing
materials, online materials, and/or speeches ("Publicity"). Both parties must
approve the content of any such Publicity prior to its publication, which
approval shall not be unreasonably withheld. No public statements or
announcements relating to this Agreement shall be issued by either party without
the prior written consent of the other party.

8.21Headings. Descriptive headings contained in this Agreement are for
convenience and not intended as substantive portions of the Agreement. Such
headings shall have no affect upon the construction of the Agreement.

8.22Industry Terms. The parties intend that words having well-known technical or
trade meanings shall be accorded such meaning, unless expressly defined
otherwise.

8.23Definitions. For purposes of this Agreement, capitalized words and phrases
shall have the respective meanings assigned to them in this Agreement.

8.24Counterparts. This Agreement may be executed in one or more counterparts,
each of which shall be deemed an original and all of which together shall
constitute one and the same agreement. Facsimile signatures shall be deemed
original signatures.

8.25General Applicability of Provisions. Unless expressly excluded, all terms of
this Agreement are applicable to all sections of this Agreement, notwithstanding
the specific reference to such a term in any other particular section.

8.26Intellectual Property Rights. Unless otherwise specifically agreed in
writing by the parties, each party shall retain all right, title and interest in
and to any intellectual property associated with the provision of Services. If
it should be necessary for a party to practice any patent, copyright, trade
secret or other non-trademark intellectual property of the other party to avail
itself of the Services, the parties shall negotiate in good faith a license with
respect to such intellectual property. Each party acknowledges that the other
party's name is proprietary to the other party. This Agreement does not
transfer, and confers no right to use, the name, trademarks (including service
marks), patents, copyrights, trade secrets, other intellectual property of
either party, except as expressly provided herein. Neither party shall take any
action inconsistent with the intellectual property rights of the other party.

8.27Survival of Terms. No termination of this Agreement shall affect the rights
or obligations of either party: (a) with respect to any payment for services
rendered before termination or credits or refunds owed; or (b) pursuant to other
provisions of this Agreement that, by their sense and context, are intended to
survive termination of this Agreement, including without limitation,
indemnification and limitation of liability.

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8.28Merger/Integration. This Agreement consists of all the terms and conditions
contained herein and in documents incorporated herein specifically by reference.
This Agreement constitutes the complete and exclusive statement of the
understanding between the parties and supersedes all proposals and prior
agreements (oral or written) between the parties relating to Services provided
hereunder, including the MSA dated October 1, 2001. This Agreement is not
intended to supersede those Agreements entered into by the parties
contemporaneously herewith.

[Remainder of page left intentionally blank]

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        IN WITNESS WHEREOF, the parties hereto have executed this Amended and
Restated Master Services Agreement effective as of the day and year first above
written. The offer expressed in this Agreement is extended to Customer for
thirty (30) calendar days from date of WilTel' signature, but such offer shall
expire immediately following such thirty (30) calendar day period.

UNIVERSAL ACCESS, INC.:   WILTEL COMMUNICATIONS, LLC:

 
  /s/  BRIAN CODERRE      

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Signature of Authorized Representative   /s/  T.J. GALLAGHER      

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Signature of Authorized Representative
Brian Coderre

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Printed Name
 
T.J. Gallagher

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Printed Name
Controller

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Title
 
Vice President

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Title
March 14, 2003

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Date of Signature
 
March 14, 2003

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Date of Signature

19

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Exhibit A

Circuits having their Service Order term reduced to six months

Circuit ID

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  Circuit
Status

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  Term in Months

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  Product Type

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  Date Completed

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  Service Type

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  Location A City

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  Location Z City

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TWC0000653   Active   60   DS3   13-Nov-98   Private Line   Columbus  
Washington TWC0000665   Active   60   DS3   19-Nov-98   Private Line   Chicago  
Detroit TWC0000666   Active   60   DS3   5-Nov-98   Private Line   Cleveland  
Detroit TWC003115   Active   60   DS3   25-May-99   Private Line   Boston  
Manhattan TWC136842   Active   60   DS3   30-Dec-99   Private Line   Los Angeles
  San Diego TWC262353   Active   60   DS3   23-Jun-00   Private Line   Charlotte
  McLean TWC262924   Active   60   DS1   24-May-00   Private Line   New York
City   Philadelphia TWC417182   Active   60   DS1   25-Jan-01   Private Line  
Herndon   Minneapolis

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Exhibit B

Service Delivery Process and Acceptable Use Policy

Customer Service
Service Delivery Processes

Service Orders and Provisioning of Circuits

        Data Circuits and Voice Grade Dedicated Access Line Circuits: Service
Orders. A Customer's request for service shall be made on WilTel' Service Order
forms in effect from time to time or on Customer's forms which have previously
been accepted in writing by WilTel ("Service Order(s)"). Each Service Order
shall reference the written agreement ("Agreement") between WilTel and the
Customer regarding the provision of telecommunication service ("Service") and
the Customer's Agreement number. WilTel will accept any Service Order under the
Customer's Agreement that comports with the terms and conditions set forth in
such Customer's Agreement and as otherwise set forth herein, subject to
availability and credit approval at the time Customer places such Service Order.

        Requested Start Date.    When a Service Order is placed, Customer will
designate: (i) a requested start date ("Requested Start Date") for the Service;
(ii) the desired term of the Service; (iii) the specific city pairs; (iv) the
applicable bandwidth; (v) whether Customer or WilTel will be obtaining Third
Party Local Access Services; and (vi) any other information necessary for WilTel
to provide the Service. WilTel will make reasonable efforts to meet Customer's
Requested Start Date. In the event that WilTel is unable to meet Customer's
Requested Start Date, WilTel will notify Customer of the date when WilTel
believes the Service will be available and Customer's Requested Start Date will
be changed to reflect the number of days of delay or advance, as appropriate.

        Implementation Intervals.    WilTel' standard service implementation
intervals for each of the Services provided by WilTel on its own network are set
forth individually for each Service in the respective Service Schedules attached
to the Customer's Agreement. A Service Order is deemed accepted by WilTel when
WilTel' Service Delivery department transmits an electronic Order Confirmation
Document ("OCD") to Customer which contains a WilTel' circuit identification
number. Service implementation intervals for Services provided either partially
or wholly off of WilTel' owned and operated network, shall be determined on an
individual case basis and shall be subject to service-specific terms and
conditions of the of the provider of the third party services, such as the
service level parameters and related warranties, if any, pricing, surcharges,
outage credits, required commitments and termination liability. WilTel shall
make reasonable efforts to provide Services within its standard service
implementation interval or on Customer's Requested Start Date. Failure of WilTel
to deliver within such interval or by such Requested Start Date shall not
constitute a default under Customer's Agreement and WilTel shall not be liable
to pay to Customer any penalties or damages for WilTel' failure to meet such
standard service implementation intervals or Requested Start Date.

        Turn Up Acknowledgement.    WilTel will issue to Customer an electronic
notice that Service is available ("Turn Up Acknowledgement" or "TUA"). The TUA
will indicate that the relevant Service has been tested by WilTel and that the
WilTel' provided portion of the service meets or exceeds the Technical
Specifications set forth in the relevant Service Schedule and whether any
related third party Service is currently available. The TUA will also set forth
the date Customer's Service will be ready for use by Customer and upon which
WilTel shall commence charging for the Service ("Circuit Effective Billing
Date"). Customer shall be deemed to have accepted Service and WilTel shall begin
billing for the Service as of the Circuit Effective Billing Date, provided that,
if Customer notifies WilTel' Service Delivery Department in writing within three
(3) business days of the Circuit Effective Billing Date that WilTel' Service is
in material non-compliance with the applicable Technical Specifications and if,
upon investigation, such material non-compliance is due solely to WilTel' fault,
then WilTel shall correct the

B-1

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non-compliance and make the appropriate adjustment to Customer's billings under
the Customer's Agreement. The occurrence of any such non-compliance shall not
constitute a default under the Customer's Agreement and WilTel shall not be
liable to pay to Customer any penalties or damages resulting from any such
non-compliance. Charges for Service begin accruing upon Circuit Effective
Billing Date, regardless of whether Customer is actually using the Service, or
is ready to test and accept the Service.

Non-Recurring and Enhanced Service Charges.

        The following is a list of the most common circumstances under which
WilTel assesses a separate, non-recurring charge in connection with the service
being provided.

        New Order Installation.    Installation Charges apply when WilTel
provides new or additional Interexchange Service ("IXC") or when WilTel obtains
new or additional Third Party Local Access (including feature group service) on
the Customer's behalf. WilTel will charge the Customer for IXC installation and
for issuing an Access Service Request ("ASR") to the Third Party Local Access
provider, i.e., Local Exchange Carrier ("LEC") or by-pass carrier, i.e.,
Competitive Access Provider ("CAP"). All Third Party Local Access provider
charges are billed to the Customer. This charge applies to both data and voice
services.

        Change of Service Order Charge.    If Customer requests a modification
to the information contained in a Service Order (other than a Change of Service
Date) prior to completion of installation of the Service, Customer may incur a
Change of Service Order Charge. No charge will be incurred if the change is
administrative in nature (i.e. billing address, contact information, etc.). If
the change is requested prior to facilities being slotted, a Change of Service
Order, Pre-Engineering charge will apply. If the change is requested after
facilities have been slotted, a Change of Service Order, Post-Engineering charge
shall apply. A charge will be incurred if the administrative change relates to
Third Party Local Access for which WilTel is acting as agent. This charge
applies to both data and voice services.

        Order Cancellation Charge.    If Customer desires to cancel a Service
Order prior to installation or acceptance of the Service, Customer will incur a
Cancellation Charge. If Customer cancels the Service Order prior to facilities
being slotted, Customer will be assessed a Pre-Engineering Cancellation Charge.
If Customer cancels the Service Order after facilities have been slotted,
Customer will be assessed a Post-Engineering Cancellation Charge. In addition to
the Cancellation Charge, Customer will be required to reimburse WilTel for any
cancellation charges relating to Third Party Local Access or other third party
service for which WilTel is acting as agent on behalf of Customer. This charge
applies to both data and voice services.

        ASR Special Access.    Third Party Local Access providers supply
standard service at tariffed rates. Any local access request that the Third
Party Local Access provider defines as "special" will be subject to the ASR
Special Access charges. This charge is an administrative charge for handling the
special access request. In addition to WilTel' administrative charge, Customer
shall be responsible for all charges imposed by Third Party Local Access
providers in fulfilling the request. This charge applies to both data and voice
services.

        Order Expedite Charge.    An Order Expedite Charge will apply when
Customer requests that a Service be turned-up on a date, which is earlier than
WilTel' standard implementation interval. If Customer requests that a Service
Order be expedited and the expedited order fails to be installed in the standard
interval, the expedite charge will still apply. This charge applies to both data
and voice services.

B-2

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        Cross Connect Install Charge.    Cross Connect charges shall apply to
connections between Customer Equipment, WilTel facilities or network, and the
equipment or cable of third parties.

        Third Party Order Expedite Charges.    These charges are assessed by a
Third Party Service Provider (e.g., Third Party Local Access Providers) if
Customer requests expedited services and/or changes to Service Order and WilTel
agrees to such request. This charge applies to both data and voice services.

        Miscellaneous.    Customer should be aware that from time to time,
third-party charges are levied to WilTel after submission of the original
Service Order from Customer. WilTel may be obligated to pass these charges to
Customer. WilTel will inform Customer of any such charges before the charges are
passed to Customer. WilTel cannot commit that all charges related to an order
will always be on the original Service Order. This charge applies to both data
and voice services.

Customer Service
Acceptable Use Policy

        Acceptable Use Policy WilTel Communications, LLC ("WilTel") has
established this Acceptable Use Policy to advise the users of its network and
services of the acceptable and prohibited uses of its network and services.
WilTel' network and services must be used only for lawful purposes and for
purposes consistent with this Acceptable Use Policy.

1.Users are prohibited from violating any system or network security measures
including but not limited to engaging in: unauthorized access or use of WilTel'
or a third party's network, data, or information;

•unauthorized monitoring of WilTel' or third party's data, systems or network
traffic;

•interference with a third party's use of WilTel' network or service.

2.Users are prohibited from engaging in activities that cause interference with
a third party's ability to connect to the Internet or provide services to
Internet users.

3.Users are prohibiting from sending unsolicited email messages. Users shall
not: post ten (10) or more messages similar in content to Usenet or other
newsgroups, forums, email mailing lists or other similar groups or lists; post
any Usenet or other newsgroup, forum, email mailing list or other similar group
or list articles which are off-topic according to the charter or other
owner-published FAQ or description of the group or list; Send unsolicited email
of commercial content to Internet users, or any unsolicited email that could
reasonably be expected to provoke complaints.

4.Users are prohibited from creating, storing or disseminating any material
containing unlawful content including materials protected by trademark, trade
secret, copyright or other intellectual property rights without proper
authorization, material that is libelous, slanderous, an invasion of privacy or
otherwise illegal.

5.Users are prohibited from falsifying user information provided to WilTel or to
other users in connection with use of a WilTel's service.

6.Users are prohibited from engaging in any of the foregoing activities by using
the service of another provider, but channeling such activities through a WilTel
account, remailer, or otherwise through a WilTel service or using a WilTel
account as a maildrop for responses or otherwise using the services of another
provider for the purpose of facilitating the forgoing activities if such use of
another party's service could reasonably be expected to adversely affect a
WilTel service.

        WilTel considers the above practices to constitute abuse of its service.
Engaging in one or more of these practices may result in termination of a user's
access to WilTel' services. Nothing contained in this policy shall be construed
to limit WilTel' actions or remedies in any way with respect to any of the

B-3

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foregoing activities, and WilTel reserves the right to take any and all
additional actions it may deem appropriate with respect to such activities,
including without limitation taking action to recover the costs and expenses of
identifying offenders and removing them from the WilTel service, and levying
cancellation charges to cover WilTel' costs. WilTel will investigate violations
of policy and will cooperate with law enforcement officials for suspected
criminal violations. In addition, WilTel's reserves at all times all rights and
remedies available to it with respect to such activities at law or in equity.

B-4

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Schedule 1

Private Line Service

        This Service Schedule is subject to that Amended and Restated Master
Services Agreement No.                        ("Agreement") by and between
WilTel Communications, LLC ("WilTel"), and Customer.

Section 1. Private Line Services

1.1Service Description.  WilTel' Private Line Service ("Private Line Service")
provides domestic DS-1, DS-3 and Optical SONET (OC-N) circuits which are
specifically dedicated to Customer's use between two (2) points specified by the
parties in a Service Order and meeting the technical requirements as defined
below in Section 5, Technical Specifications for Private Line Service. In
addition, Private Line Service includes only those circuits where the entire
circuit shall be located solely upon the WilTel' owned and operated network and
both end points of such circuit shall originate or terminate at a WilTel point
of presence.

Section 2. Recurring Rates and Charges

2.1Monthly Recurring Rates.  Interexchange Rates. WilTel will provide Customer
with a Rate Sheet for this Service. Interexchange rates for Private Line
Services wholly on WilTel' owned and operated network are as set forth in the
applicable Service Order, but will not exceed the rates set forth in the Rate
Sheet. Pricing contained in Quotes but not yet included in a Service Order are
valid only for thirty (30) days. The monthly recurring charge ("MRC") for any
Service is firm for the term reflected on the related Service Order. Pricing for
any Service not on WilTel network will be determined on an individual case basis
and set forth on Customer's Service Order.

2.3Third Party Local Access Rates.  If a Customer requests a Letter of Agency
("LOA") for a DS1 Private Line circuit, WilTel will issue LOA/CFA (Carrier
Facilities Assignment) from the ILEC Central Office, which serves WilTel's
facilities. The Customer will then be responsible for a monthly recurring Local
Service Arrangement ("LSA") charge for the channel termination and any
applicable mileage between the ILEC Central Office and WilTel's facilities. The
LSA only applies to DS1 Private Line circuits and is set forth in the Rate
Sheet. Subject to Section 4.3 of the Agreement, if WilTel issues CFA and an
entrance facility charge for DS-3 through OC-48 Private Line circuits, or for
any Private Line circuits not entirely located on WilTel's owned and operated
network applies, the entrance facility charge will be at the rates set forth in
the Rate Sheet.

3:1Mux.  3:1 Muxing allows Customer to aggregate multiple DS-1's in a single
WilTel's POP for transport and termination on a single DS-3 to another WilTel
POP. For example, Customer orders five (5) DS1's from POP A to POP B. WilTel
will mux the DS1's in POP A for transport on a single DS3 at the agreed upon
rate and terminate a DS3 to Customer at POP B. WilTel will not demux the DS1's
at the POP B location.

Section 3. Non-Recurring Rates and Charges

3.1Non-Recurring Charges.  Non-Recurring Charges may be incurred for Private
Line connections. Non-Recurring Charges are set forth in Table A.5 below.

1

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Table A.5
Non-Recurring Charges

 
  DS-1

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  DS-3

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  OC-3

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  OC-12

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  OC-48

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New Order Installation   ***   ***   ***   ***   *** Change Of Service Date
Charge (1st change free)   ***   ***   ***   ***   *** Change Of Service Order
Charge                       Pre-engineering   ***   ***   ***   ***   ***  
Post-engineering   ***   ***   ***   ***   *** Order Cancellation              
        Pre-engineering   ***   ***   ***   ***   ***   Post-engineering   ***  
***   ***   ***   *** Reconfiguration Charge   ***   ***   ***   ***   ***
Access Service Request (ASR)   ***   ***   ***   ***   *** Access Service
Request (ASR) Change   ***   ***   ***   ***   *** Order Expedite   ***   ***  
***   ***   *** Cross Connect Install Charge   ***   ***   ***   ***   ***      
                In addition to the above charges, Customer is required to
reimburse WilTel for any Third Party Provider charges relating to Customer's
service. Non-Recurring Charges not described above will be considered special
requests and will be handled on an individual case basis. All of the charges
stated above are subject to change with thirty (30) calendar day's notice. See
Exhibit B for a complete description of the above charges

3.2Installation Charges.  For WilTel Services, installation charges shall be
***.

3.3Miscellaneous.  Customer should be aware that from time to time, third-party
charges are levied to WilTel after submission of the original Service Order from
Customer. WilTel may be obligated to pass these charges to Customer. WilTel will
inform Customer of any such charges before the charges are passed to Customer as
referenced in Section 5.3 of the Agreement. WilTel cannot commit that all
charges related to any requested Service will always be on the original Service
Order.

3.4Non-Recurring Pricing.  Pricing for Non-Recurring Private Line Service shall
be as set forth in this Section 3 and are subject to change upon thirty
(30) calendar days' written or electronic notice by WilTel to Customer. Price
changes shall only be effective on a going-forward basis and shall not apply to
Service Orders placed by Customer and accepted by WilTel prior to the effective
date of the respective price change.

Section 4. Outage Credits

4.1Outage Credits.  Customer acknowledges the possibility of an unscheduled,
continuous and/or interrupted period of time during which Private Line Service
is unavailable or fails to conform to the Technical Specifications below
("Outage"). An Outage shall begin upon the earlier of WilTel' actual knowledge
of the Outage or WilTel' receipt of notice from the Customer of the Outage. In
the event of an Outage, Customer shall be entitled to a credit ("Outage Credit")
upon WilTel' receipt of Customer's written request for such Outage Credit. The
amount of the Outage Credit for Private Line Service shall be an amount equal to
1/720 of the monthly recurring charge for the interexchange portion of the
Service for each hour in excess of the first two (2) consecutive hours that the
affected Service is unavailable or fails to conform to the Technical
Specifications.

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Excessive Outages.    If a single circuit experiences either (a) three (3) or
more outages of fifteen (15) minutes duration or longer during any thirty
(30) day period, or (b) one or more outages of fifteen (15) minutes each in each
of three (3) consecutive months or (c) one (1) outage of more than twenty-four
(24) consecutive hours in a one (1) calendar month period, ("Excessive Outage"),
Customer shall be entitled, in addition to the applicable Outage Credit, if any,
to terminate such circuits as are affected by the Excessive Outage without
liability for the Early Termination Charge set forth in Section 6.4 of the
Agreement. However, Customer shall be liable for any termination liability
associated with Third Party Local Access Service or any other Third Party
Service associated with such disconnection.

4.3Remedy.  The Outage Credit and right to terminate for an Excessive Outage as
set forth in this Section 4 shall be the sole and exclusive remedy of Customer
in the event of any Outage and under no circumstances shall an Outage be deemed
a default under the Agreement.

4.4Limitations.  Customer shall not receive an Outage Credit if the Outage is
(i) of a duration of less than two (2) consecutive hours; (ii) caused by
Customer or others authorized by Customer to use the Services under the
Agreement; (iii) due to the failure of power, facilities, equipment, systems or
connections not provided by WilTel; (iv) caused by the failure of Third Party
Local Access Service to WilTel' fiber optic network; (v) the result of scheduled
maintenance where Customer has been notified of scheduled maintenance in
advance; or (vi) due to a Force Majeure event as defined in the Agreement.

4.5Credit Payment.  Outage Credits shall be credited on Customer's next monthly
invoice for the affected Service.

Section 5. Technical Specifications

5.1Technical Specifications.  Interconnection Specifications for DS-1 service is
provided in accordance with ANSI Standard T1.102 and T1.403 (formerly AT&T
Compatibility Bulletin 119). DS-1 Service operates at 1.544 Mbps. DS-3 service
is provided in accordance with ANSI Standard T1.102 and T1.404. DS-3 Service
operates at 44.736 Mbps. Optical SONET Services are provided in accordance with
ANSI Standard T1.105. OC-3 Service operates at 155.520 Mbps and is configured
with 3 separate STS-1 signaling paths. OC-3C Service operates at 155.520 Mbps
and is configured with 1 STS-3C signaling path (or 3 concatenated STS-1
signaling paths). OC-12 Service operates at 622.080 Mbps with 12 separate STS-1
signaling paths. OC-12C Service operates at 622.080 Mbps with 1 STS-12C
signaling path (or 4 separate STS-3C signaling paths). OC-48 Service operates at
2488.320 Mbps and is configured with 48 separate STS-1 signaling paths. The
standards by which WilTel' Private Line Services is measured apply on a one-way
basis between WilTel' POPs only.

5.2Network Availability.  Network Availability is a measurement of the percent
of total time that service is operative when measured over a 365 consecutive day
(8760 hour) period. DS1, DS-3 and Optical SONET Service is considered
inoperative when there has been a loss of signal or when two consecutive 15
second loop-back tests confirm the observation of a bit error rate equal to or
worse than 1 × 10-6. For DS-N level Services on WilTel' network, availability
shall be 99.95% from POP to POP measured over a one-year period. For OC-N level
Services on WilTel' network, availability shall be 99.95% from POP to POP
measured over a one-year period. Network availability for Services of a Third
Party Provider is established by the Third Party Provider. The local access
availability standards for DS-1 and DS-3 and Optical SONET Services are
established by the Third Party Local Access Service provider.

5.3Mean Time to Restore.  Mean Time to Restore (MTTR) shall be the average time
required to restore service and resume availability and is stated in terms of
equipment and cable outages. The time is measured from the moment the outage is
reported until the service is available. With respect to Private Line Service,
WilTel has an objective of repairing network equipment within an

3

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average of two (2) hours and an objective to have the first fiber on a cable cut
restored within an average of six (6) hours. WilTel will undertake repair
efforts on equipment or fiber when WilTel first becomes aware of the problem, or
when notified by Customer and Customer has released all or part of the Service
for testing. The maintenance standards in this Section 5.3 only apply for
equipment or fiber on WilTel' owned and operated network and from WilTel' POP to
WilTel' POP.

5.4Error Free Seconds.  Performance is noted in Error Free Seconds (Error Free
Seconds ("EFS"), while Available) which is a measure of the percentage of total
seconds that do not contain bit errors over a consecutive twenty-four (24) hour
period. Performance shall be measured on a one-way basis using a Pseudo Random
Bit Sequence test pattern as defined in CCITT Recommendation 0.151. For Services
on WilTel' network, EFS shall be 99.5% from POP to POP measured over a one-year
period. For Services not on WilTel' network, the EFS standards for local access
DS1, DS-3 and Optical SONET Service is established by the Third Party Local
Access Service provider. For Services from a Third Party Provider, the Third
Party Provider will establish EFS.

Section 6. Product Intervals

6.1Implementation Intervals.  WilTel' standard service implementation interval
for DSN and OCN Service is set forth below in Table A.6. Third Party Provider
Service implementation intervals shall be determined on an individual case
basis. WilTel shall make reasonable efforts to provide WilTel' Services within
its standard service implementation interval. Failure of WilTel to deliver by
such date shall not constitute a default under the Agreement and WilTel shall
not be liable to pay to Customer any penalties or damages for WilTel' failure to
meet such standard service implementation intervals, except as set forth in
Section 3.4 of the Agreement.

Table A.6
Implementation Intervals

Service Type

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  Standard Interval
POP to POP

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DS1   *** calendar days DS3   *** calendar days OC3   *** calendar days OC12  
*** calendar days OC48   *** calendar days

Section 7. Planned Network Maintenance Activity

7.1Timing.  WilTel shall avoid performing network maintenance between 0600 to
2200 Central Time (or local time with respect to facilities comprising
international Service), Monday through Friday, inclusive, that will have a
disruptive impact on the continuity or performance level of Customer's Service.
However, the preceding sentence does not apply to restoration of continuity to a
severed or partially severed fiber optic cable, restoration of dysfunctional
power and ancillary support equipment, or correction of any potential jeopardy
conditions. WilTel will use commercially reasonable efforts to notify Customer
prior to emergency maintenance.

7.2Notice.  WilTel shall provide Customer with electronic mail, telephone,
facsimile, or written notice of all non-emergency, planned network maintenance
(i) not less than *** business days prior to

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the Commission. Confidential treatment has been requested with respect to the
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4

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performing maintenance that, in its reasonable opinion, has a substantial
likelihood of affecting Customer's traffic for up to *** milliseconds, and
(ii) not less than *** business days prior to performing maintenance that, in
its reasonable opinion, has a substantial likelihood of affecting Customer
traffic for more than *** milliseconds. If WilTel' planned activity is canceled
or delayed, WilTel shall promptly notify Customer and shall comply with the
provisions of this Section to reschedule any delayed activity.

Section 8. Warranty

        WilTel warrants that Private Line Service shall be provided to Customer
in accordance with the applicable Technical Specifications set forth above.
WilTel shall use commercially reasonable efforts under the circumstances to
remedy any delays, interruptions, omissions, mistakes, accidents or errors in
the Service and restore such Service to comply with the terms hereof. THE
FOREGOING WARRANTY IS THE SOLE AND EXCLUSIVE WARRANTY AND IS PROVIDED IN LIEU OF
ALL OTHER WARRANTIES WHETHER EXPRESS OR IMPLIED INCLUDING WITHOUT LIMITATION THE
IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE
OUTAGE CREDITS REMEDY AND RIGHT TO TERMINATE FOR EXCESSIVE OUTAGES PROVIDED TO
CUSTOMER AS SET FORTH IN SECTION 4 OF THIS SERVICE SCHEDULE ARE THE SOLE AND
EXCLUSIVE REMEDIES PROVIDED TO CUSTOMER AND IS IN LIEU OF ALL OTHER REMEDIES,
REGARDLESS OF WHETHER THIS WARRANTY FAILS OF ITS ESSENTIAL PURPOSE.

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the Commission. Confidential treatment has been requested with respect to the
omitted portions.

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        IN WITNESS WHEREOF, THE PARTIES HAVE INDICATED THEIR AGREEMENT BY
SIGNING BELOW.

UNIVERSAL ACCESS, INC.:   WILTEL COMMUNICATIONS, LLC:

/s/  BRIAN CODERRE      

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Signature of Authorized Representative
Brian Coderre

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Printed Name
Controller

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Title
March 14, 2003

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Date

 

/s/  T. J. GALLAGHER      

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Signature of Authorized Representative
T.J. Gallagher

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Printed Name
Vice President

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Title
March 14, 2003

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Date

6

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Schedule 2

Optical Wave Service

        This Service Schedule is subject to that Amended and Restated Master
Services Agreement No.                        ("Agreement") by and between
WilTel Communications, LLC ("WilTel"), and Customer.

Section 1. Optical Wave Services

1.1Optical Wave Service Description.  WilTel' Optical Wave Service provides
unprotected, concatenated OC-48 wavelengths ("Optical Wave Service"). WilTel
uses dense wavelength division multiplexing ("DWDM") technology to multiplex
OC-48 signals at unique wavelengths, or waves, and then transmits the composite
signal over a single fiber. At the receiver, the composite signal is then
de-multiplexed and each unique signal is recovered. The Optical Wave Service
provided hereunder will originate at the fiber cross connect in the WilTel' POP
designated by Customer as the origination point and will terminate at the fiber
cross connect in the WilTel' POP designated by Customer as the termination point
with all such Optical Wave Service to be provided on circuits located entirely
upon the WilTel' owned and operated network and both end points of such circuit
shall originate or terminate at a WilTel point of presence. WilTel' Optical Wave
Service does not include a timing source. When a Customer purchases Optical Wave
Service from WilTel, the Customer will be expected to provide a clocking source
for its equipment.

Section 2. Recurring Rates & Charges

2.1Monthly Recurring Rates.  

Optical Wave Service Rates.  WilTel will provide Customer with a Rate Sheet for
this Service. Rates for Optical Wave Service wholly on WilTel' owned and
operated network are as set forth in the applicable Service Order, but will not
exceed the rates set forth in the Rate Sheet. Pricing contained in Quotes but
not yet included in a Service Order are valid only for thirty (30) days. The
monthly recurring charge ("MRC") for any Service is firm for the term reflected
on the related Service Order. Pricing for any Service not on WilTel network will
be determined on an individual case basis and set forth on Customer's Service
Order.

2.2Diverse Routing Charges.  A diverse route is defined as an indirect route
between two cities. Customer may order a diverse route between two city pairs
For example, a Customer's initial request for Optical Wave Service from City A
to City B will be provided and priced using the shortest route and V&H miles.
When Customer requests a diverse route from City A to City B through City C, the
route will be priced using V&H miles from City A to City C and City C to City B
separately. These prices will then be added giving the total monthly recurring
charge for the diverse route from City A to City B.

Section 3. Non-Recurring Rates & Charges

3.1Non-Recurring Charges.  Non-Recurring Charges may be incurred for Optical
Wave Services and are set forth below in Table B.3.

1

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Table B.3
Non-Recurring Charges

 
  OC48

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New Order Installation   *** Change Of Service Date Charge (1st change free)  
*** Change of Service Order Charge       Pre-engineering   ***  
Post-engineering   *** Order Cancellation       Pre-engineering   ***  
Post-engineering   *** Reconfiguration   *** Order Expedite   ***
All Non-Recurring Charges for Waves are figured
separately for each diverse route.

3.2Installation Charges.  For WilTel Services, installation charges shall be
***.

3.3Hybrid Circuit Charges.  For circuits containing both Optical Wave Service
and Private Line Service, pricing shall be calculated using the following
process:

a.A circuit shall be divided into segments by Service. Each circuit segment
shall be delineated by the longest span of that Service possible.

b.Circuit pricing will be by segment as identified above. Pricing shall be based
on the V&H coordinates of each segment's endpoints. Installation pricing shall
be on a per segment basis. Other Non-Recurring Charges shall be on a per circuit
basis.

3.4Non-Recurring Pricing.  Pricing for Non-Recurring Optical Wave Service shall
be as set forth in this Section 3 and are subject to change upon thirty
(30) calendar days' written or electronic notice by WilTel to Customer. Price
changes shall only be effective on a going-forward basis and shall not apply to
Service Orders placed by Customer and accepted by WilTel prior to the effective
date of the respective price change.

Section 4. Outage Credits

4.1Outage Credits.  Customer acknowledges the possibility of an unscheduled,
continuous and/or interrupted period of time during which Optical Wave Service
is unavailable or fails to conform to the Technical Specifications below
("Outage"). An Outage shall begin upon the earlier of WilTel' actual knowledge
of the Outage or WilTel' receipt of notice from the Customer of the Outage. In
the event of an Outage, Customer shall be entitled to a credit ("Outage Credit")
upon WilTel' receipt of Customer's written request for such Outage Credit. The
amount of the Outage Credit for Optical Wave Service shall be an amount equal to
1/1440 of the monthly recurring charge for the interexchange portion of the
Service for each hour in excess of the first two (2) consecutive hours that the
affected Service is unavailable or fails to conform to the below Technical
Specifications.

4.2Remedy.  The Outage Credit as set forth in this Section 4 shall be the sole
and exclusive remedy of Customer in the event of any Outage and under no
circumstances shall an Outage be deemed a default under the Agreement

4.2Limitations.  Customer shall not receive an Outage Credit if the Outage is:
(i) of a duration of less than two (2) consecutive hours; (ii) caused by
Customer or others authorized by Customer to use

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***Certain information on this page has been omitted and filed separately with
the Commission. Confidential treatment has been requested with respect to the
omitted portions.

2

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the Services under the Agreement; (iii) due to the failure of power, facilities,
equipment, systems or connections not provided by WilTel; (iv) caused by the
failure of Third Party Local Access Service to WilTel' fiber optic network;
(v) the result of scheduled maintenance where Customer has been notified of
scheduled maintenance in advance; or (vi) due to a Force Majeure event as
defined in the Agreement.

4.4Credit Payment.  Outage Credits shall be credited on Customer's next monthly
invoice for the affected Service.

Section 5. Technical Specifications

5.1Technical Specifications.  At any time during the term of the Agreement,
WilTel shall have the capability to monitor and report performance monitoring
functions and alarm/status monitoring functions listed as required in the
Telcordia GR-253-CORE SONET Transport Systems Common Generic Criteria
(Dec. 1997) for Optical Wave Service. The standards by which WilTel' Optical
Wave Service is measured apply on a one-way basis between WilTel' POPs only.

5.2Network Availability.  Network Availability is a measurement of the percent
of total time that Service is operative when measured over a 365 consecutive day
(8760 hour) period. For Services on WilTel' network, Network Availability shall
be 99.339% measured over a one thousand (1,000) mile Service for a one-year
period. Performance (% Error Free Seconds ("EFS"), while available) is noted in
EFS, which is a measure of the percentage of total seconds that do not contain
bit errors when measured over a period of thirty (30) consecutive days. For
Services on WilTel' network, EFS shall be 99.076% from POP to POP measured over
a one (1) year period. Network Availability will vary with different circuit
lengths.

5.3Maintenance.  The following maintenance procedures and activities are to be
provided by WilTel for Optical Wave Service. WilTel will promptly perform
transport capacity maintenance activities for Optical Wave Service including
isolating troubles and will provide information concerning those troubles, for
each Optical Wave Service, to the Customer's Trouble Reporting Center.

a.Remote Alarm Surveillance.    Throughout the term of the Agreement, WilTel
will provide remote alarm surveillance and sectionalization equipment and
procedures for the purpose of detecting any out-of-service conditions or
Service-affecting conditions, and for rapidly removing Service impairments and
restoring Service for Optical Wave Service.

b.Notification.    In the event of any service-affecting alarm condition on
Optical Wave Service, WilTel will notify the applicable Customer Trouble
Reporting Center. Such notice will include (i) the type and status of
alarm-causing condition, (ii) the estimated time to repair, (iii) and the
probable cause of failure. WilTel will report, the status of repair work and a
revised estimate of the time to complete the repair.

5.4Mean Time to Restore.  Mean Time to Restore (MTTR) shall be the average time
required to restore service and resume availability and is stated in terms of
cable outages. The time is measured from the moment the outage is reported until
the service is available. With respect to Optical Wave Service, WilTel has an
objective to have the first fiber on a cable cut restored within an average of
six (6) hours. WilTel will undertake repair efforts on equipment or fiber when
WilTel first becomes aware of the problem, or when notified by Customer and
Customer has released all or part of the Service for testing. The maintenance
standards in this Section 5.4 only apply for equipment or fiber on WilTel' owned
and operated network and from WilTel' POP to WilTel' POP.

Section 6. Product Intervals

6.1Implementation Intervals.  WilTel' standard service implementation interval
for DSN and OCN service is set forth below in Table B.4. Third Party Service
implementation intervals shall be

3

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determined on an individual case basis. WilTel shall make reasonable efforts to
provide WilTel' Services within its standard service implementation interval.
Failure of WilTel to deliver by such date shall not constitute a default under
the Agreement, and WilTel shall not be liable to pay to Customer any penalties
or damages for WilTel' failure to meet such standard service implementation
intervals, except as set forth in Section 3.4 of the Agreement.

Table B.4
Implementation Intervals

Service Type

--------------------------------------------------------------------------------

  Standard Interval
POP to POP

--------------------------------------------------------------------------------

OC48 Waves   *** calendar days OC192 Waves   ICB

Section 7. Planned Network Maintenance Activity

7.1Timing.  WilTel shall avoid performing network maintenance between 0600 to
2200 Central Time (or local time with respect to facilities comprising
international Service), Monday through Friday, inclusive, that will have a
disruptive impact on the continuity or performance level of Customer's Service.
However, the preceding sentence does not apply to restoration of continuity to a
severed or partially severed fiber optic cable, restoration of dysfunctional
power and ancillary support equipment, or correction of any potential jeopardy
conditions. WilTel will use commercially reasonable efforts to notify Customer
prior to emergency maintenance.

7.2Notice.  WilTel shall provide Customer with electronic mail, telephone,
facsimile, or written notice of all non-emergency, planned network maintenance
(i) not less than *** business days prior to performing maintenance that, in its
reasonable opinion, has a substantial likelihood of affecting Customer's traffic
for up to *** milliseconds, and (ii) not less than *** business days prior to
performing maintenance that, in its reasonable opinion, has a substantial
likelihood of affecting Customer traffic for more than *** milliseconds. If
WilTel' planned activity is canceled or delayed, WilTel shall promptly notify
Customer and shall comply with the provisions of this Section to reschedule any
delayed activity.

Section 8. Warranty

        WilTel warrants that Optical Wave Service shall be provided to Customer
in accordance with the applicable Technical Specifications set forth above.
WilTel shall use commercially reasonable efforts under the circumstances to
remedy any delays, interruptions, omissions, mistakes, accidents or errors in
the Services and restore such Services to comply with the terms hereof. THE
FOREGOING WARRANTY IS THE SOLE AND EXCLUSIVE WARRANTY AND IS PROVIDED IN LIEU OF
ALL OTHER WARRANTIES WHETHER EXPRESS OR IMPLIED INCLUDING WITHOUT LIMITATION THE
IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE
OUTAGE CREDITS REMEDY AND RIGHT TO TERMINATE FOR EXCESSIVE OUTAGES PROVIDED TO
CUSTOMER AS SET FORTH IN SECTION 4 OF THIS SERVICE SCHEDULE ARE THE SOLE AND
EXCLUSIVE REMEDIES PROVIDED TO CUSTOMER AND IS IN LIEU OF ALL OTHER REMEDIES,
REGARDLESS OF WHETHER THIS WARRANTY FAILS OF ITS ESSENTIAL PURPOSE.

[Remainder of page left intentionally blank]

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***Certain information on this page has been omitted and filed separately with
the Commission. Confidential treatment has been requested with respect to the
omitted portions.

4

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        IN WITNESS WHEREOF, THE PARTIES HAVE INDICATED THEIR AGREEMENT BY
SIGNING BELOW.

UNIVERSAL ACCESS, INC.:   WILTEL COMMUNICATIONS, LLC:

/s/  BRIAN CODERRE      

--------------------------------------------------------------------------------

Signature of Authorized Representative
Brian Coderre

--------------------------------------------------------------------------------

Printed Name
Controller

--------------------------------------------------------------------------------

Title
March 14, 2003

--------------------------------------------------------------------------------

Date

 

/s/  T. J. GALLAGHER      

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Signature of Authorized Representative
T.J. Gallagher

--------------------------------------------------------------------------------

Printed Name
Vice President

--------------------------------------------------------------------------------

Title
March 14, 2003

--------------------------------------------------------------------------------

Date

5

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Schedule 3

ATM Service

        This Service Schedule is subject to that Amended and Restated Master
Services Agreement No.                        ("Agreement") by and between
WilTel Communications, LLC ("WilTel"), and Customer.

Section 1. Description of Service

1.1Service Description.  WilTel Network Asynchronous Transfer Mode Service (the
"ATM Service") is cell-based switching and multiplexing technology, which can
support applications requiring high bandwidth and high performance. ATM Service
will allow Customers who have requirements for high speed, inter-premise
connectivity to interconnect their multiple locations via a User Network
Interface (UNI) element from the Customer premise equipment (CPE) to the WilTel'
point of presence (POP). ATM Service is a general-purpose, connection-oriented
technology that provides integration of disparate networks onto a single
communications infrastructure. ATM Service provides the capability to route
traffic between various end points via virtual circuits that are predefined on
the WilTel' ATM network and in the equipment provided by the Customer (CPE). The
Customer is responsible for segmenting information into 53 byte cells for
transport across the WilTel' ATM network. ATM Service provides networking
capabilities suited for high-speed, low delay, bandwidth intensive applications
such as voice, video and data that require real-time or near real-time
connectivity between multiple locations. In addition, ATM Service shall only be
provided with respect to those circuits where the entire circuit shall be
located entirely upon the WilTel' owned and operated network and both end points
of such circuit shall originate or terminate at a WilTel' point of presence.

Section 2. Recurring Rates and Charges

2.1WilTel will provide Customer with a Rate Sheet for this Service. Pricing for
ATM Service is reflected in the Service Order, but will not exceed the rates set
forth in the Rate Sheet. Typical pricing methods are included in section 2.2,
2.3, and 2.4.

2.2UNI Port Connections.  Rates for User Network Interface (UNI) Port
Connections is determined on the port speed connections selected by Customer.
UNI Port Connections are currently available at DS3, OC3 and OC12 speeds.
Monthly recurring charges for Port Connections are on the Service Order.

2.3Virtual Circuits.  There are two types of virtual circuits, which can be
selected, the Virtual Channel Connection (VCC) or the Virtual Path Connection
(VPC). The type of virtual circuit selected by the Customer does not determine
the price. Pricing for virtual circuits is determined based on the Class of
Service (CoS). Three Classes of Service are offered by WilTel: Constant Bit Rate
(CBR) and Variable Bit Ratenon real time (VBRnrt) and Unspecified Bit Rate
(UBR). CoS charges are stated in Committed Information Rates (CIR) which are
stated in Megabit per second (Mbps) increments for one-way (Simplex) VCCs or
VPCs. CIR increments are available in 1 Mbps increments up to 40 Mbps for DS3
ports, 5 Mbps increments up to 150 Mpbs for OC3 ports and 25 Mbps increments up
to 600 Mbps for OC12 ports. Monthly recurring charges for Bandwidth are set
forth on the Service Order.

2.4ATM Flex-UNI.  ATM Flex-UNI allows Customers, expecting to outgrow their
initial physical port size within the first twelve (12) months of their Service,
a migration path to larger Permanent Virtual Circuits (PVCs) without requiring
an upgrade of their hardware.

a.OC3 Ordering Increments.    Customer can order PVCs in one-megabyte increments
starting with one (1) megabytes up to nineteen (19) megabytes for an OC3
physical port. Once

1

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Customer needs a twenty (20) megabyte PVC, Customer must revert to the standard
OC3 port pricing regardless of the time remaining on the twelve (12) month
period.

b.OC12 Ordering Increments.    Customer can order PVCs in five-megabyte
increments starting with five (5) megabytes up to seventy (70) megabytes for an
OC12 physical port. Once Customer needs a 75-megabyte PVC, Customer must revert
to the standard OC12 port pricing regardless of the time remaining on the twelve
(12) month period.

c.ATM Flex UNI Term Commitment.    Before ATM Flex-UNI Service will be allowed,
Customer must collocate with WilTel' POP and commit to a three (3) year term for
the Service. Customer will receive the reduced ATM Flex-UNI rate for the first
twelve (12) months of the circuit. Customer will be charged WilTel' standard ATM
rate for the port, (i) if Customer exceeds the ATM Flex-UNI capacity during the
first twelve (12) months of Service; or (ii) beginning the 13th month of the
circuit, whichever is sooner.

d.Monthly Recurring Charges.    ATM Flex-UNI pricing is based on flat monthly
fee assessed per node, which includes a flat port charge based on the port
connection speed, a charge for each PVC's CIR going out from the port, and local
access. ATM Flex-UNI is priced simplex, meaning that a PVC's CIR is priced for
both the ingress and egress CIR. Monthly recurring charges for ATM Flex-UNI
pricing is set forth on the Service Order.

Section 3. Non-Recurring Rates and Charges

3.1UNI Port and ATM Flex-UNI Connections.  Non-recurring charges may be incurred
for the Port, VCC or VPC connections. Non-recurring Charges are set forth below
in Table C.4.

2

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Table C.4
UNI Port Non-Recurring Charges

 
  DS3

--------------------------------------------------------------------------------

  OC3

--------------------------------------------------------------------------------

  OC12

--------------------------------------------------------------------------------

New Order Installation             Port   ***/45MB Port   ***/155Mb Port  
***/622Mb Port Virtual Circuit   ***/VC   ***/VC   ***/VC Change Of Service Date
Charge (1st change free)   ***   ***   *** Change Of Service Order Charge      
        Pre-engineering   ***   ***   ***   Post-engineering   ***   ***   ***  
Port Order Change   ***/Port   ***/Port   ***/Port   PVC Order Change   ***/VC  
***/VC   ***/VC Order Cancellation               Pre-engineering   ***   ***  
***   Post-engineering   ***   ***   *** Access Service Request (ASR) Special
Access   ***   ***   *** ASR Supplement   ***   ***   *** Order Expedite   ***  
***   *** Cross Connect Install Charge   ***   ***   *** In addition to the
above charges, Customer is required to reimburse WilTel for any Third Party
Provider charges relating to Customer's service. Non-Recurring Charges not
described above will be considered special requests and will be handled on an
individual case basis. All of the charges stated above are subject to change
with thirty (30) calendar day's notice. See Exhibit B for a complete description
of the above charges.

3.2Installation Charges  For WilTel Services, installation and non-recurring
charges shall be ***.

3.3Miscellaneous.  Customer should be aware that from time to time, third-party
charges are levied to WilTel after submission of the original Service Order from
Customer. WilTel may be obligated to pass these charges to Customer. WilTel will
inform Customer of any such charges before the charges are passed to Customer.
WilTel cannot commit that all charges related to any requested Service will
always be on the original Service Order.

3.4Non-Recurring Pricing.  Pricing for Non-Recurring ATM Service shall be as set
forth in this Section 3 and are subject to change upon thirty (30) calendar
days' written or electronic notice by WilTel to Customer. Price changes shall
only be effective on a going-forward basis and shall not apply to Service Orders
placed by Customer and accepted by WilTel prior to the effective date of the
respective price change.

Section 4. Outage Credits

4.1Outage Credits.  Customer acknowledges the possibility of an unscheduled,
continuous and/or interrupted period of time during which ATM Service is
unavailable or fails to conform to the Technical Specifications below
("Outage"). An Outage shall begin upon the earlier of WilTel' actual knowledge
of the Outage or WilTel' receipt of notice from the Customer of the Outage. In
the event of an Outage, Customer shall be entitled to a credit ("Outage Credit")
upon WilTel' receipt of Customer's written request for such Outage Credit. The
amount of the Outage Credit

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***Certain information on this page has been omitted and filed separately with
the Commission. Confidential treatment has been requested with respect to the
omitted portions.

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for ATM Service shall be an amount equal to ten percent (10%) of the monthly
Port, PVC and/or usage charges (as stated on the applicable Service Order)
regardless of the length of such Outage.

4.2Remedy.  The Outage Credit as set forth in this Section 4 shall be the sole
and exclusive remedy of Customer in the event of any Outage and under no
circumstances shall an Outage be deemed a default under the Agreement.

4.3Limitations.  Customer shall not receive an Outage Credit if the Outage is:
(i) of a duration of less than two (2) consecutive hours; (ii) caused by
Customer or others authorized by Customer to use the Services under the
Agreement; (iii) due to the failure of power, facilities, equipment, systems or
connections not provided by WilTel; (iv) caused by the failure of Third Party
Local Access Service to WilTel' fiber optic network; (v) the result of scheduled
maintenance where Customer has been notified of scheduled maintenance in
advance; or (vi) due to a Force Majeure event as defined in the Agreement.

4.4Credit Payment.  Outage Credits shall be credited on Customer's next monthly
invoice for the affected Service.

Section 5. Technical Specifications

5.1Technical Specifications.  The Technical Specifications set forth herein are
stated as an objective that the ATM Service will perform in accordance with
prevailing telecommunications industry standards. The standards by which WilTel'
ATM Service is measured apply on a one-way basis between WilTel' POPs only and
involves two variables: Network Availability and Mean-time-to-restore.
Mean-time-to-restore is discussed in Section 5.3 of this Schedule.

5.2Network Availability.  WilTel' Network Availability is a measurement of the
percent of total time that service is operative when measured over a 365
consecutive day (8760 hour) period. For ATM Services on WilTel' network, Network
Availability shall be 99.95% from point-of-presence ("POP") to POP measured over
a one (1) year period. Network Availability for Services of a Third Party
Provider is established by the Third Party Provider. The Local Access Service
availability standards for ATM Services are established by the Local Access
Service provider.

5.3Mean Time to Restore.  Mean Time to Restore (MTTR) shall be the average time
required to restore service and resume availability and is stated in terms of
equipment and cable outages. The time is measured from the moment the outage is
reported until the service is available. With respect to ATM Service, WilTel has
an objective of repairing network equipment within an average of two (2) hours
and an objective to have the first fiber on a cable cut restored within an
average of six (6) hours. WilTel will undertake repair efforts on equipment or
fiber when WilTel first becomes aware of the problem, or when notified by
Customer and Customer has released all or part of the Service for testing. The
maintenance standards in this Section 5.3 only apply for equipment or fiber on
WilTel' owned and operated network and from WilTel' POP to WilTel' POP.

Section 6. Product Intervals

6.1Implementation Intervals.  WilTel' standard service implementation interval
for DSN and OCN service is set forth below in Table C.5. Third Party Service
implementation intervals shall be determined on an individual case basis. WilTel
shall make reasonable efforts to provide WilTel' Services within its standard
service implementation interval. Failure of WilTel to deliver by such date shall
not constitute a default under the Agreement and WilTel shall not be liable to
pay to Customer any penalties or damages for WilTel' failure to meet such
implementation intervals.

4

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Table C.5
Implementation Intervals

Service Type

--------------------------------------------------------------------------------

  Standard Interval
POP to POP

--------------------------------------------------------------------------------

  Standard Interval
POP to POP w/Third
Party Local Access

--------------------------------------------------------------------------------

DSN   *** calendar days   *** calendar days OCN   *** calendar days   ***
calendar days

Section 7. Planned Network Maintenance Activity

7.1Timing.  WilTel shall avoid performing network maintenance between 0600 to
2200 Central Time (or local time with respect to facilities comprising
international Service), Monday through Friday, inclusive, that will have a
disruptive impact on the continuity or performance level of Customer's Service.
However, the preceding sentence does not apply to restoration of continuity to a
severed or partially severed fiber optic cable, restoration of dysfunctional
power and ancillary support equipment, or correction of any potential jeopardy
conditions. WilTel will use commercially reasonable efforts to notify Customer
prior to emergency maintenance.

7.2Notice.  WilTel shall provide Customer with electronic mail, telephone,
facsimile, or written notice of all non-emergency, planned network maintenance
(i) not less than *** business days prior to performing maintenance that, in its
reasonable opinion, has a substantial likelihood of affecting Customer's traffic
for up to *** milliseconds, and (ii) not less than *** business days prior to
performing maintenance that, in its reasonable opinion, has a substantial
likelihood of affecting Customer traffic for more than *** milliseconds. If
WilTel' planned activity is canceled or delayed, WilTel shall promptly notify
Customer and shall comply with the provisions of this Section to reschedule any
delayed activity.

Section 8. Warranty

        WilTel warrants that ATM Service shall be provided to Customer in
accordance with the applicable Technical Specifications set forth above. WilTel
shall use commercially reasonable efforts under the circumstances to remedy any
delays, interruptions, omissions, mistakes, accidents or errors in the Services
and restore such Services to comply with the terms hereof. THE FOREGOING
WARRANTY IS THE SOLE AND EXCLUSIVE WARRANTY AND IS PROVIDED IN LIEU OF ALL OTHER
WARRANTIES WHETHER EXPRESS OR IMPLIED INCLUDING WITHOUT LIMITATION THE IMPLIED
WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE OUTAGE
CREDITS REMEDY PROVIDED TO CUSTOMER AS SET FORTH IN SECTION 4 OF THIS SERVICE
SCHEDULE IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO CUSTOMER AND IS IN LIEU OF
ALL OTHER REMEDIES, REGARDLESS OF WHETHER THIS WARRANTY FAILS OF ITS ESSENTIAL
PURPOSE.

[Remainder of page left intentionally blank]

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***Certain information on this page has been omitted and filed separately with
the Commission. Confidential treatment has been requested with respect to the
omitted portions.

5

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        IN WITNESS WHEREOF, THE PARTIES HAVE INDICATED THEIR AGREEMENT BY
SIGNING BELOW.

UNIVERSAL ACCESS, INC.:   WILTEL COMMUNICATIONS, LLC:

/s/  BRIAN CODERRE      

--------------------------------------------------------------------------------

Signature of Authorized Representative
Brian Coderre

--------------------------------------------------------------------------------

Printed Name
Controller

--------------------------------------------------------------------------------

Title
March 14, 2003

--------------------------------------------------------------------------------

Date

 

/s/  T. J. GALLAGHER      

--------------------------------------------------------------------------------

Signature of Authorized Representative
T.J. Gallagher

--------------------------------------------------------------------------------

Printed Name
Vice President

--------------------------------------------------------------------------------

Title
March 14, 2003

--------------------------------------------------------------------------------

Date

6

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Schedule 9

International Backhaul Service

        This Service Schedule is subject to that Amended and Restated Master
Services Agreement No.                        ("Agreement") by and between
WilTel Communications, LLC ("WilTel"), and Customer.

Section 1. International Backhaul Services

1.1Service Description.  WilTel' International Backhaul Service ("International
Backhaul Service") is a point-to-point transport service that connects a
Customer's international cable network to WilTel' domestic U.S. network.
Customer may order International Backhaul Service at STM-1 capacity at the China
U.S. Cable and Southern Cross Cable Network ("Southern Cross") and STM-1, STM-4
or STM-16 capacity at the Japan U.S. Cable and TAT-14 ("TAT-14"), subject to
availability. WilTel will pick up Customer's traffic, which enters the U.S. via
a cable system at a cable landing station. The cable landing stations where
WilTel may pick up Customer's traffic for the individual cable systems are as
set forth in Table G.1 below. The origination demarcation point for
International Backhaul Service shall be at the system interface of the landing
station of the applicable cable system (the "Origination Demarcation Point").
Customer will designate on each Service Order at which cable landing station the
Service is to originate. Once WilTel's picks up the traffic at the cable landing
station, it will then carry the traffic to one of WilTel' designated termination
points-of-presence ("Termination POP"), which will also be specified by Customer
on the Service Order. The Termination POPs for each landing station are set
forth in Table F.1 below.

1

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Table F.1

Cable System

--------------------------------------------------------------------------------

  *Landing Station

--------------------------------------------------------------------------------

  Termination
Point

--------------------------------------------------------------------------------

        Santa Clara, CA     San Luis Obispo, CA   San Francisco, CA        
Sacramento, CA         Los Angeles, CA    

--------------------------------------------------------------------------------

        Portland, OR China US Cable       Seattle, WA     Bandon, OR
(Non-Diverse)   Sacramento, CA         San Francisco, CA    

--------------------------------------------------------------------------------

    Bandon, OR
(Diverse)   Los Angeles, CA         Santa Clara, CA

--------------------------------------------------------------------------------

        Santa Clara, CA     Manchester, CA
(Non-Diverse)   Sacramento, CA         San Francisco, CA Japan US Cable      
Los Angeles, CA         Santa Clara, CA    

--------------------------------------------------------------------------------

    Morro Bay, CA   Sacramento, CA         San Francisco, CA         Los
Angeles, CA

--------------------------------------------------------------------------------

Southern CrossCable Network   Morro Bay, CA   Santa Clara, CA        
Sacramento, CA         San Francisco, CA         Los Angeles, CA

--------------------------------------------------------------------------------

TAT-14   Tuckerton, NJ   New York City, NY

--------------------------------------------------------------------------------

*subject to availability

1.2Pre-Provision of Circuits with AT&T & WorldCom.  Customer agrees to provide
WilTel with an appropriate Letter of Authorization which will allow WilTel to
pre-provision Customer's requested circuits from the appropriate cable landing
station operator's cable landing station to the system interface of the
applicable cable system. Such pre-provisioning will be provided by WilTel at no
charge to Customer. However, Customer shall pay all WilTel' installation charges
for International Backhaul Service (as set forth in Section 3 below) once
International Backhaul Service is available. WilTel will not assume any
responsibility for such pre-provisioning or associated service, which service
shall be provided directly by the cable landing station operator.

1.3Service Availability.  The availability of International Backhaul Service
depends on the actual in-service date for each of the respective cables and
landing stations. Under no circumstances shall International Backhaul Service be
available before the in-service date of the applicable cables and landing
stations. Currently, it is anticipated that STM-16 will not be available for the
Japan U.S. landing stations before October 2001, but this date is subject to
change.

1.4Liability for Third Party Local Access Services.  In issuing a Service Order
that includes a request for Third Party Local Access Services, Customer should
be aware of the anticipated in-service date

2

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of the applicable cables and landing stations In the event WilTel arranges Third
Party Local Access Services on behalf of Customer in accordance with the terms
and conditions of the Agreement and Service is not available, because the cable
system or landing station is not available, WilTel shall, (i) begin billing
Customer for any Third Party Local Access Services arranged by WilTel on behalf
of Customer; or (ii) terminate the Third Party Local Access Services arranged by
WilTel on behalf of Customer and pass through to Customer any termination
liability incurred by WilTel from the Third Party Local Access Service provider,
whichever is provided by Customer. Customer shall pay all Third Party Local
Access charges.

Section 2. Recurring Rates and Charges

2.1Monthly Recurring Rates.  

a.Pricing for International Backhaul Services shall consist of monthly recurring
charges, one-time installation charges and non-recurring charges. Customer's
monthly recurring charges shall be determined on an individual case basis and
will be set forth on the Service Order.

b.Third Party Local Access.    Pricing for Third Party Local Access is
determined in accordance with the terms and conditions set forth in the
Agreement.

Section 3. Non-Recurring Rates and Charges

3.1Non-Recurring Rates.  In addition to the monthly recurring charges set forth
on Customer's Service Order, Customer may incur the following non-recurring
charges for Services as set forth below in Table F.2.

Table F.2
Non-Recurring Charges

 
  STM-1

--------------------------------------------------------------------------------

  STM-4

--------------------------------------------------------------------------------

  STM-16

--------------------------------------------------------------------------------

New Order Installation   ***   ***   *** Change Of Service Date Charge (1st
change free)   ***   ***   *** Change Of Service Order Charge              
Pre-Engineering   ***   ***   ***   Post-Engineering   ***   ***   *** Order
Cancellation               Pre-Engineering   ***   ***   ***   Post-Engineering
  ***   ***   *** Access Service Request (ASR) Special Access   ***   ***   ***
Order Expedite   ***   ***   *** In addition to the above charges, Customer is
required to reimburse WilTel for any Third Party Provider charges relating to
Customer's service. Non-Recurring Charges not described above will be considered
special requests and will be handled on an individual case basis. All of the
charges stated above are subject to change with thirty (30) calendar day's
notice. See Exhibit B for a complete description of the above charges.

3.2Miscellaneous.  Customer should be aware that from time to time, third-party
charges are levied to WilTel after submission of the original Service Order from
Customer. WilTel may be obligated to pass these charges to Customer. WilTel will
inform Customer of any such charges before the charges are passed to Customer.
WilTel cannot commit that all charges related to any requested Service will
always be on the original Service Order.

3.3Non-Recurring Pricing.  Pricing for Non-Recurring International Backhaul
Service shall be as set forth in this Section 3 and are subject to change upon
thirty (30) calendar days' written or electronic notice by WilTel to Customer.
Price changes shall only be effective on a going-forward

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***Certain information on this page has been omitted and filed separately with
the Commission. Confidential treatment has been requested with respect to the
omitted portions.

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basis and shall not apply to Service Orders placed by Customer and accepted by
WilTel prior to the effective date of the respective price change.

Section 4. International Backhaul Services Outage Credits

4.1Outage Credits.  Customer acknowledges the possibility of an unscheduled,
continuous and/or interrupted period of time during which when International
Backhaul Service fails to conform to the Technical Specifications set forth
below ("Outage"). An Outage shall begin upon the earlier of WilTel' actual
knowledge of the Outage or WilTel' receipt of notice from the Customer of the
Outage. In the event of an Outage, Customer shall be entitled to a credit
("Outage Credit") upon WilTel' receipt of Customer's written request for such
Outage Credit. For International Backhaul Service, the Outage Credit amount
shall be the amount of 1/720 of the monthly recurring charge for the
interexchange portion of the Service for each hour in excess of the first two
(2) consecutive hours that the affected Service fails to conform to the below
Technical Specifications.

4.2Excessive Outages.  If a single circuit experiences either (a) three (3) or
more outages of fifteen (15) minutes duration or longer during any thirty
(30) day period, or (b) one or more outages of fifteen (15) minutes each in each
of three (3) consecutive months or (c) one (1) outage of more than twenty-four
(24) consecutive hours in a one (1) calendar month period, ("Excessive
Outages"), Customer shall be entitled, in addition to the applicable Outage
Credit, if any, to terminate such circuits as are affected by the Excessive
Outage without liability for the Early Termination Charge set forth in
Section 6.4 of the Agreement. However, Customer shall be liable for any
termination liability associated with Third Party Local Access Service or any
other Third Party Service associated with such disconnection.

4.3Remedy.  The Outage Credit and right to terminate for an Excessive Outage as
set forth in this Section 4 shall be the sole and exclusive remedy of Customer
in the event of any Outage and under no circumstances shall an Outage be deemed
a default under the Agreement.

4.4Limitations.  Customer shall not receive an Outage Credit if the Outage is:
(i) of a duration of less than two (2) consecutive hours (ii) caused by Customer
or others authorized by Customer to use the Services under the Agreement;
(iii) due to the failure of power, facilities, equipment, systems or connections
not provided by WilTel; (iv) caused by the failure of Third Party Local Access
Service to WilTel' fiber optic network; (v) the result of scheduled maintenance
where Customer has been notified of scheduled maintenance in advance; or
(vi) due to a Force Majeure event as defined in the Agreement.

4.5Credit Payment.  Outage Credits shall be credited on Customer's next monthly
invoice for the affected Service.

Section 5. Technical Specifications

5.1The Technical Specifications set forth herein are stated as an objective that
the International Backhaul Services will perform in accordance with prevailing
telecommunications industry standards. The International Backhaul Service
provided under this Agreement is measured using two variables: Network
Availability and Mean-time-to-restore. Mean-time-to-restore is addressed in
Section 6.3 of this Schedule.

5.2Interconnection Specifications  

a.Optical SONET Services (OC-N). Optical SONET Services are provided in
accordance with ANSI Standard T1.105.

b.Optical Synchronous Digital Hierarchy (SDH) Services. SDH Services are
provided in accordance with ITU standards.

4

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c.Network Access and Interfaces. International Backhaul Service provides network
access at standard SDH (ITU) interfaces capable of interconnecting STM-1, STM-4
and 2.5 Gbps Wave single-ended dedicated line circuits.

5.3Protection.  The network equipment has a protection capability on a per STM-1
and STM-4 circuit basis.

5.4Diversity.  International Backhaul shall provide Route Diversity between all
landing stations (excluding certain paths at Bandon) and designated termination
points. Route Diversity is defined as separate physical paths being delivered
via two different conduits between the cable landing station and the designated
WilTel' POP.

5.5Availability.  

a.Availability on WilTel' Network.    Availability is a measurement of the
percent of total time that service is operative when measured over a 365
consecutive day (8760 hour) period. Optical SONET Service is considered
inoperative when there has been a loss of signal or when two consecutive 15
second loop-back tests confirm the observation of a bit error rate equal to

Or worse than 1 × 10-6. For Services on WilTel' network, availability shall be
99.95% from the Origination Demarcation Point (as defined in Section 1.1 of this
Schedule) to WilTel' Termination POP measured over a one (1) year period.

b.Availability for Services not on WilTel' Network.    For Services not on
WilTel' network, the Third Party Provider will establish availability. The Third
Party Local Access availability standards for Third Party Local Access Services
are established by the Third Party Local Access Provider. See General Provisions
for other factors affecting availability.

5.6Performance (% Error Free Seconds, while Available).  Performance is noted in
Error Free Seconds, which are a measure of the percentage of total seconds that
do not contain bit errors when measured over a consecutive twenty-four (24) hour
period. Performance shall be measured on a one-way basis using a Pseudo Random
Bit Sequence test pattern as defined in CCITT Recommendation 0.151. For Services
on WilTel' network, Error Free Seconds shall be 99.5% from the Origination
Demarcation Point (as defined in Section 1.1 of this Schedule) to WilTel'
Termination POP measured over a one (1) year period. Error Free Seconds for
Services not on WilTel' Network. The Error Free Seconds standards for Third
Party Local Access Services is established by the Third Party Local Access
Provider. For Services not on WilTel' network, the Third Party Provider will
establish Error Free Seconds.

Section 6. General Provisions Relating to Technical Specifications

6.1Quality Standards.  Standards apply on a one-way basis between the
Origination Demarcation Point (as defined in Section 1.1 of this Service
Schedule) and WilTel' Termination POP only. All standards exclude nonperformance
due to force majeure or planned interruptions for necessary maintenance
purposes. All standards exclude nonperformance due to acts or omissions of
Customer or due to any failure of Customer-provided equipment.

6.2Maintenance.  WilTel will undertake repair efforts on equipment or fiber when
WilTel first becomes aware of it, or when notified by Customer and Customer has
released all or part of the Service for testing. The maintenance standards in
this Section 6 only apply for Equipment or Fiber on WilTel' owned and operated
network and from the Origination Demarcation Point (as defined in Section 1.1 of
this Service Schedule) to WilTel' Termination POP.

6.3Mean Time to Restore ("MTTR").  Mean Time to Restore is be the average time
required to restore service and resume availability and is stated in terms of
equipment and cable outages. The time is measured from the moment the outage is
reported until the service is available. With

5

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respect to International Backhaul Service, WilTel has an objective of repairing
network equipment within an average of two (2) hours and an objective to have
the first fiber on a cable cut restored within an average of six (6) hours.
WilTel will undertake repair efforts on equipment or fiber when WilTel first
becomes aware of the problem, or when notified by Customer and Customer has
released all or part of the Service for testing. The maintenance standards in
this Section 6.3 only apply for equipment or fiber on WilTel' owned and operated
network and from WilTel' POP to WilTel' POP.

6.4Calculation.  WilTel calculates network availability upon written request
from customers. Customer must notify the WilTel Service Delivery and initiate an
action request to determine if the standards stated above were met.

Section 7. Product Intervals

7.1Service Implementation Intervals.  WilTel' standard service implementation
interval for International Backhaul Service is one-hundred twenty (120) days
(a) from acceptance of a Service Order by WilTel' Service Delivery department
(if the applicable cable station is already in service) or (b) (if WilTel has
accepted the Service Order before the in-service date of the applicable cable
station) from the in-service date of the applicable cable station, whichever is
later. Under no circumstances shall the standard service implementation interval
period start running before Service is available. WilTel shall make reasonable
efforts to provide International Backhaul Service within its standard service
implementation interval as determined in accordance herewith. Failure of WilTel
to deliver by such date shall not constitute a default under the Agreement and
WilTel shall not be liable to pay to Customer any penalties or damages for
WilTel' failure to meet such standard service implementation intervals except as
set forth in Section 3.4 of the Agreement.

Section 8. Planned Network Maintenance Activity

8.1Timing.  WilTel shall avoid performing network maintenance between 0600 to
2200 Central Time (or local time with respect to facilities comprising
international Service), Monday through Friday, inclusive, that will have a
disruptive impact on the continuity or performance level of Customer's Service.
However, the preceding sentence does not apply to restoration of continuity to a
severed or partially severed fiber optic cable, restoration of dysfunctional
power and ancillary support equipment, or correction of any potential jeopardy
conditions. WilTel will use commercially reasonable efforts to notify Customer
prior to emergency maintenance.

8.2Notice.  WilTel shall provide Customer with electronic mail, telephone,
facsimile, or written notice of all non-emergency, planned network maintenance
(i) not less than *** business days prior to performing maintenance that, in its
reasonable opinion, has a substantial likelihood of affecting Customer's traffic
for up to *** milliseconds, and (ii) not less than *** business days prior to
performing maintenance that, in its reasonable opinion, has a substantial
likelihood of affecting Customer traffic for more than *** milliseconds. If
WilTel' planned activity is canceled or delayed, WilTel shall promptly notify
Customer and shall comply with the provisions of this Section to reschedule any
delayed activity.

Section 9. Warranty

        WilTel warrants that International Backhaul Service shall be provided to
Customer in accordance with the applicable Technical Specifications set forth in
Section 5 of this Schedule. WilTel shall use commercially reasonable efforts
under the circumstances to remedy any delays, interruptions, omissions,
mistakes, accidents or errors in the Services and restore such Services to
compliance with the Technical Specifications. THE FOREGOING WARRANTY IS THE SOLE
AND EXCLUSIVE WARRANTY MADE BY WILTEL WITH RESPECT TO THE SERVICES PROVIDED
UNDER THIS SCHEDULE 9 AND SUCH WARRANTY IS PROVIDED IN LIEU OF ALL OTHER
WARRANTIES WHETHER EXPRESS

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***Certain information on this page has been omitted and filed separately with
the Commission. Confidential treatment has been requested with respect to the
omitted portions.

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OR IMPLIED INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTY OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE. THE OUTAGE CREDITS REMEDY PROVIDED TO
CUSTOMER AS SET FORTH IN SECTION 4 OF THIS SCHEDULE IS THE SOLE AND EXCLUSIVE
REMEDY PROVIDED TO CUSTOMER AND IS IN LIEU OF ALL OTHER REMEDIES, REGARDLESS OF
WHETHER THIS WARRANTY FAILS OF ITS ESSENTIAL PURPOSE.

        IN WITNESS WHEREOF, THE PARTIES HAVE INDICATED THEIR AGREEMENT BY
SIGNING BELOW

UNIVERSAL ACCESS, INC.:   WILTEL COMMUNICATIONS, LLC:
/s/  BRIAN CODERRE      

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Signature of Authorized Representative
 
/s/  T.J. GALLAGHER      

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Signature of Authorized Representative
Brian Coderre

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Printed Name
 
T.J. Gallagher

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Printed Name
Controller

--------------------------------------------------------------------------------

Title
 
Vice President

--------------------------------------------------------------------------------

Title
March 14, 2003

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Date
 
March 14, 2003

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Date

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Schedule 10

International Private Line Service

        This Service Schedule is subject to that Amended and Restated Master
Services Agreement No.                        ("Agreement") by and between
WilTel Communications, LLC ("WilTel"), and Customer.

Section 1. International Private Line Services

1.1Service Description.  WilTel International Private Line Service (the
"International Private Line Service") provides international circuits at varying
speeds which are specifically dedicated to Customer's use between two (2) points
specified by the parties in a Service Order and meeting the technical
requirements as defined below in the Technical Specifications.

Section 2. Recurring Rates and Charges

2.1Monthly Recurring Rates.  Pricing for any International Private Line Service
is determined on an individual case basis and will be set forth on Customer's
Service Order. Pricing and arranging for Third Party Local Access Service is
determined in accordance with the terms and conditions set forth in the
Agreement.

Section 3. Non-Recurring Rates and Charges

3.1Non-Recurring Charges.  Non-Recurring Charges may be incurred for Private
Line connections. Non-recurring Charges include, but are not limited to new
order installation, change of service date charge, change of service order
charge (pre-installation and post installation), order cancellation
(pre-installation and post-installation) and cancellation charges related to
Third Party Local Access service for which WilTel is acting as agent, ASR (new
or disconnect) special access, ASR supplement, order expedite, reconfiguration,
and additional installation/maintenance/engineering during and after hours.
Non-recurring charges for the Services or other services agreed to by the
parties as set forth above will be set forth on Customer's Service Order.

3.2Installation Charges.  Installation charges shall apply to the normal
installation of equipment necessary to provide the requested service to the
point of demarcation at the Customer's premises. Additional installation charges
shall apply when WilTel is required to install equipment other than that
normally required to provide the service or when Customer requests special
equipment.

3.3Non-Recurring Charges.  Non-Recurring Charges not described above will be
considered special requests and will be handled on an individual case basis. All
Non-Recurring Charges are subject to change with thirty (30) calendar days'
notice. Price changes shall only be effective on a going-forward basis and shall
not apply to Service Orders placed by Customer and accepted by WilTel prior to
the effective date of the respective price change.

3.4Miscellaneous.  Customer should be aware that from time to time, third-party
charges are levied to WilTel after submission of the original Service Order from
Customer. WilTel may be obligated to pass these charges to Customer. WilTel will
inform Customer of any such charges before the charges are passed to Customer.
WilTel cannot commit that all charges related to any requested Service will
always be on the original Service Order.

Section 4. Outage Credits

4.1Outage Credits.  Customer acknowledges the possibility of an unscheduled,
continuous and/or interrupted period of time during which period of time
International Private Line Service fails to conform to the Technical
Specifications ("Outage"). An Outage shall begin upon the earlier of WilTel'
actual knowledge of the Outage or WilTel' receipt of notice from the Customer of
the

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Outage. In the event of an Outage, Customer shall be entitled to a credit
("Outage Credit") upon WilTel' receipt of Customer's written request for such
Outage Credit. For the domestic USA interexchange portion of International
Private Line Service, the Outage Credit amount shall be the amount of 1/720 of
the monthly recurring charge for each hour in excess of the first two
(2) consecutive hours that the affected Service fails to conform to the below
Technical Specifications. For Outages due to a submarine cable failure, WilTel
shall pass through outage credits, if any, it may receive from the cable
administrator.

4.2Remedy.  The Outage Credit as set forth in this Section 4 shall be the sole
and exclusive remedy of Customer in the event of any Outage and under no
circumstances shall an Outage be deemed a default under the Agreement.

4.3Limitations.  Customer shall not receive an Outage Credit if the Outage is:
(i) of a duration of less than two (2) consecutive hours (ii) caused by Customer
or others authorized by Customer to use the Services under the Agreement;
(iii) due to the failure of power, facilities, equipment, systems or connections
not provided by WilTel; (iv) caused by the failure of Third Party Local Access
Service to WilTel' fiber optic network; (v) the result of scheduled maintenance
where Customer has been notified of scheduled maintenance in advance; or
(vi) due to a Force Majeure event as defined in the Agreement.

4.4Credit Payment.  Outage Credits shall be credited on the Customer's next
monthly invoice for the affected Service.

Section 5. Technical Specifications

5.1Specifications.  WilTel' International Private Line Services ("IPL"s) meet or
exceed the International Telecommunications Union's ("ITU"'s) recommendations.
The ITU specifications for circuit performance parameters are set forth below in
Table G.1.

Table G.1

Errored Seconds (ES)   Compliant to M.2100 Severely Errored Seconds (SES)  
Compliant to M.2100 Availability   Compliant to G.822

5.2WilTel' Performance Objectives.  WilTel' minimum performance objectives are
detailed in the table below. These parameters are the provisioning
specifications used for 24-hour end-to-end tests, and are derived from ITU
specifications. In most cases, WilTel' circuit performance outperforms these
objectives by a substantial margin as set forth below in Table G.2.

Table G.2

Performance Objective

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  Satellite

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  Cable

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Bit Error Ratio (BER)   <10-6   <10-7 Synchronization Loss   <5   <3 Error Free
Seconds (EFS)   >98.5%   >99.5% ITU Availability   >99.0%   >99.6%

5.3Service Level Agreements.  A Service Level Agreement ("SLA") is available on
Customer's request depending on the route chosen. The route-specific SLA will
not only be dependent on the origination and destination locations, but also on
the specific fiber-optic cable or satellite over which the traffic will travel.
These specific SLAs are more accurate and clearly demonstrate the high quality
of service WilTel provides to its clients.

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5.4Foreign Carrier Routes.  Please note that any route involving a Foreign
Carrier or other carrier will generally not be covered in a WilTel SLA, as the
Foreign Carrier's operations are not under the control of WilTel. Nevertheless,
these carriers will also comply with the ITU specifications for circuit
performance parameters. For any route that consists of a submarine cable, the
submarine cable portion of the route will generally not be covered by an SLA but
shall comply with the technical specifications set forth for the particular
submarine cable system specified below, which specifications will be provided to
Customer upon Customer's request.

Submarine Cable System

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  (subject to availability)

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China-U.S. Cable   o Southern Cross Cable   o TAT-14 Cable   o Japan-U.S. Cable
  o

5.5Mean Time to Restore.  Mean Time to Restore (MTTR) shall be the average time
required to restore service and resume availability and is stated in terms of
equipment and cable outages. The time is measured from the moment the outage is
reported until the service is available. With respect to International Private
Line Service, WilTel has an objective of repairing network equipment within an
average of two (2) hours and an objective to have the first fiber on a cable cut
restored within an average of six (6) hours. WilTel will undertake repair
efforts on equipment or fiber when WilTel first becomes aware of the problem, or
when notified by Customer and Customer has released all or part of the Service
for testing. The maintenance standards in this Section 5.5 only apply for
equipment or fiber on WilTel' owned and operated network and from WilTel' POP to
WilTel' POP.

Section 6. Product Intervals

6.1Implementation Intervals.  WilTel' standard service implementation interval
shall be determined on an individual case basis. WilTel shall make reasonable
efforts to provide International Private Line Service within its standard
service implementation interval. Failure of WilTel to deliver by such date shall
not constitute a default under the Agreement and WilTel shall not be liable to
pay to Customer any penalties or damages for WilTel' failure to meet such
standard service implementation intervals.

Section 7. Planned Network Maintenance Activity

7.1Timing.  WilTel shall avoid performing network maintenance between 0600 to
2200 Central Time (or local time with respect to facilities comprising
international Service), Monday through Friday, inclusive, that will have a
disruptive impact on the continuity or performance level of Customer's Service.
However, the preceding sentence does not apply to restoration of continuity to a
severed or partially severed fiber optic cable, restoration of dysfunctional
power and ancillary support equipment, or correction of any potential jeopardy
conditions. WilTel will use commercially reasonable efforts to notify Customer
prior to emergency maintenance.

7.2Notice.  WilTel shall provide Customer with electronic mail, telephone,
facsimile, or written notice of all non-emergency, planned network maintenance
(i) not less than *** business days prior to performing maintenance that, in its
reasonable opinion, has a substantial likelihood of affecting Customer's traffic
for up to *** milliseconds, and (ii) not less than *** business days prior to
performing maintenance that, in its reasonable opinion, has a substantial
likelihood of affecting Customer traffic for more than *** milliseconds. If
WilTel' planned activity is canceled or delayed, WilTel shall promptly notify
Customer and shall comply with the provisions of this Section to reschedule any
delayed activity.

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***Certain information on this page has been omitted and filed separately with
the Commission. Confidential treatment has been requested with respect to the
omitted portions.

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Section 8. Warranty

        WilTel warrants that International Private Line Service shall be
provided to Customer in accordance with the applicable Technical Specifications
set forth in Section 5 of this Schedule. WilTel shall use commercially
reasonable efforts under the circumstances to remedy any delays, interruptions,
omissions, mistakes, accidents or errors in the Services and restore such
Services to compliance with the Technical Specifications. THE FOREGOING WARRANTY
IS THE SOLE AND EXCLUSIVE WARRANTY AND IS PROVIDED IN LIEU OF ALL OTHER
WARRANTIES WHETHER EXPRESS OR IMPLIED INCLUDING WITHOUT LIMITATION THE IMPLIED
WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE OUTAGE
CREDITS REMEDY PROVIDED TO CUSTOMER AS SET FORTH IN SECTION 4 OF THIS SCHEDULE
IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO CUSTOMER AND IS IN LIEU OF ALL
OTHER REMEDIES, REGARDLESS OF WHETHER THIS WARRANTY FAILS OF ITS ESSENTIAL
PURPOSE.

[Remainder of page left intentionally blank]

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        IN WITNESS WHEREOF, THE PARTIES HAVE INDICATED THEIR AGREEMENT BY
SIGNING BELOW

UNIVERSAL ACCESS, INC.:   WILTEL COMMUNICATIONS, LLC:
/s/  BRIAN CODERRE      

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Signature of Authorized Representative
 
/s/  T.J. GALLAGHER      

--------------------------------------------------------------------------------

Signature of Authorized Representative
Brian Coderre

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Printed Name
 
T.J. Gallagher

--------------------------------------------------------------------------------

Printed Name
Controller

--------------------------------------------------------------------------------

Title
 
Vice President

--------------------------------------------------------------------------------

Title
March 14, 2003

--------------------------------------------------------------------------------

Date
 
March 14, 2003

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Date

5

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Schedule 13

Metro Access Private Line Service

        This Service Schedule is subject to that Amended and Restated Master
Services Agreement No.                        ("Agreement") by and between
WilTel Communications, LLC ("WilTel"), and Customer. WilTel may designate an
affiliate to provide any portion of the Metro Access Private Line Service then
for purposes of this Schedule 13.

Section 1. Metro Private Line Services

1.1Service Description.  WilTel' Metro Access Private Line Service ("Metro
Private Line Service") provides domestic DS-3 and Optical SONET (OC-3, OC-12 and
OC-48) circuits, which are located entirely upon WilTel owned and operated
network with both end points of such circuit located within the same city and at
a WilTel metro access point ("MAP"). Metro Private Line Service is specifically
dedicated to Customer's use between two (2) points specified by the parties in a
Service Order and will meet the Technical Specifications as defined below in
Section 6.

Section 2. Service Availability

2.1Service Availability.  WilTel offers Metro Private Line Service in the cities
set forth below:

METRO ACCESS PRIVATE LINE CITIES
2001

Atlanta   Los Angeles   San Diego Baltimore   Miami   St. Louis Boston  
Minneapolis   San Francisco Chicago   Newark   San Jose Dallas   New York  
Seattle Denver   Philadelphia   Washington, D.C. Houston   Phoenix    

Section 3. Recurring Rates and Charges

3.1Monthly Recurring Rates.  

a.WilTel will provide Customer with a Rate Sheet for this Service. Monthly
recurring charges for Metro Private Line Service are as set forth in the
applicable Service Order, but will not exceed the rates set forth in the Rate
Sheet. Pricing contained in Quotes but not yet included in a Service Order are
valid only for thirty (30) days. The monthly recurring charge ("MRC") for any
Service is firm for the term reflected on the related Service Order. Pricing for
any Service not on WilTel network will be determined on an individual case basis
and set forth on Customer's Service Order. , and include both a fixed and
variable component. The fixed rate is based upon the Metro city and type of
circuit ordered. The variable rate is based upon the mileage between the WilTel
MAPS, which constitute the end points of the Metro Private Line Service.
Customer shall also pay any monthly Metro Private Line interconnect charges.

b.Third Party Local Access Service.    Customer shall execute a Letter of
Agency, in a form provided by WilTel, authorizing WilTel to deal directly with
Third Party Local Access Provider(s) to obtain the necessary Third Party Service
on behalf of the Customer. Customer shall pay all charges including, without
limitation, monthly charges, usage charges, installation charges, non-recurring
charges, or Third Party Local Access Provider(s). When WilTel orders Third Party
Local Access Services for Customer, WilTel shall coordinate the installation of
the

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Third Party Local Access Service, and conduct the initial testing of an
interconnection between the WilTel' Service and the Third Party Local Access
Service. The Customer's charge for Third Party Local Access Service ordered by
WilTel shall accrue at the then-current tariff rate (or the standard published
rate, if there is no tariff rate) of the Third Party Provider; and any changes
in that rate will be passed through to the Customer. When WilTel orders Third
Party Local Access Services, WilTel shall not begin billing Customer for such
Third Party Local Access Services until the Start of Service for any related
WilTel Services. Customer may order its own Third Party Local Access Services
with a vendor who has established entrance facilities in a WilTel' POP or other
vendors with WilTel' prior written permission. When Customer orders its own
Third Party Local Access Service, its provider shall directly bill Customer for
Services. In addition, WilTel may charge Customer for any associated entrance
facility or mileage charges if it provides a carrier facility assignment ("CFA")
to Customer. Customer shall be responsible for having the Customer-ordered Third
Party Local Access Services turned up and shall be obligated to pay for WilTel'
Services regardless of whether the Customer ordered Third Party Local Access
Services are available. It is understood that, except for Section 4.3 with
respect to dedicated entrance facility charges, Article 4 of the Agreement shall
have no application to the provision of Metro Private Line Services under this
Schedule 13.

Section 4. Non-Recurring Rates and Charges

4.1Non-Recurring Charges.  Non-Recurring Charges may apply to Metro Private Line
connections. Non-Recurring Charges are set forth in Table K.2 below.

Table K.2
Non-Recurring Charges

 
  DS-3

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  OC-3

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  OC-12

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  OC-48

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Installation   ***   ***   ***   *** Change Of Service Order Charge            
      Pre-install   ***   ***   ***   ***   Post-install   ***   ***   ***   ***
Order Cancellation   ***   ***   ***   *** Order Expedite   ***   ***   ***  
*** Cross Connect Install Charge   ***   ***   ***   ***

4.2Installation Charges.  For WilTel Services, installation charges shall be
***.

4.3Miscellaneous.  Customer should be aware that from time to time, charges of
Third Party Providers are levied against WilTel after submission of the original
Service Order from Customer. WilTel will pass these charges through to Customer.
WilTel will inform Customer of any such charges before the charges are passed to
Customer. WilTel cannot guarantee that all charges related to any requested
Metro Private Line Service will always be on the original Service Order.

4.4Non-Recurring Pricing.  Pricing for Non-Recurring Metro Access Service shall
be as set forth in this Section 4 and are subject to change upon thirty
(30) calendar days' written or electronic notice by WilTel to Customer. Price
changes shall only be effective on a going-forward basis and shall not apply to
Service Orders placed by Customer and accepted by WilTel prior to the effective
date of the respective price change.

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***Certain information on this page has been omitted and filed separately with
the Commission. Confidential treatment has been requested with respect to the
omitted portions.

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Section 5. Outage Credits

5.1Outage Credits.  Customer acknowledges the possibility of an unscheduled,
continuous and/or interrupted period of time during which Metro Private Line
Service fails to conform to the Technical Specifications below ("Outage"). An
Outage shall begin upon the earlier of WilTel' actual knowledge of the Outage or
WilTel' receipt of notice from the Customer of the Outage. In the event of an
Outage, Customer shall be entitled to a credit ("Outage Credit") upon WilTel'
receipt of Customer's written request for such Outage Credit. The amount of the
Outage Credit for Metro Private Line Service shall be an amount equal to 1/720
of the monthly recurring charge for that portion of the Metro Private Line
Service which is subject to the Outage for each hour in excess of the first two
(2) consecutive hours that the affected Metro Private Line Service fails to
conform to the Technical Specifications set forth below.

5.2Excessive Outages.  If a single circuit experiences either (a) three (3) or
more outages of fifteen (15) minutes duration or longer during any thirty
(30) day period, or (b) one or more outages of fifteen (15) minutes each in each
of three consecutive months or (c) one (1) outage of more than twenty-four
(24) consecutive hours in a one (1) calendar month period, ("Excessive Outage"),
Customer shall be entitled, in addition to the applicable Outage Credit, if any,
to terminate such circuits as are affected by the Excessive Outage without
liability for the Early Termination Charge set forth in Section 6.4 of the
Agreement. However, Customer shall be liable for any termination liability
associated with Third Party Local Access Service or any other Third Party
Service associated with such disconnection.

5.3Remedy.  The Outage Credit and the right to terminate for an Excessive Outage
as set forth in this Section 5 shall be the sole and exclusive remedy of
Customer in the event of any Outage and under no circumstances shall an Outage
be deemed a default under the Agreement.

5.4Limitations.  Customer shall not receive an Outage Credit if the Outage is:
(i) of a duration of less than two (2) consecutive hours; (ii) caused by
Customer or others authorized by Customer to use the Metro Private Line Services
under the MSA; (iii) due to the failure of power, facilities, equipment, systems
or connections not provided by WilTel; (iv) caused by the failure of Third Party
Local Access Service to WilTel' owned and operated network; (v) the result of
scheduled maintenance where Customer has been notified of scheduled maintenance
in advance; or (vi) due to a Force Majeure event as defined in Section 8.5 of
the Agreement.

5.5Credit Payment.  WilTel shall credit Customer with Outage Credits on the next
monthly invoice for the affected Service.

Section 6. Technical Specifications

6.1Technical Specifications.  Interconnection Specifications for DS-3 service
are as set forth in ANSI Standard T1.102 and T1.404. DS-3 Service operates at
44.736 Mbps. WilTel provides Optical SONET Services in accordance with ANSI
Standard T1.105. OC-3 Service operates at 155.520 Mbps and is configured with 3
separate STS-1 signaling paths. OC-3C Service operates at 155.520 Mbps and is
configured with 1 STS-3C signaling path (or 3 concatenated STS-1 signaling
paths). OC-12 Service operates at 622.080 Mbps with 12 separate STS-1 signaling
paths. OC-12C Service operates at 622.080 Mbps with 1 STS-12C signaling path (or
4 separate STS-3C signaling paths). OC-48 Service operates at 2488.320 Mbps and
is configured with 48 separate STS-1 signaling paths. The standards by which
WilTel' Metro Private Line Services are measured apply on a one-way basis
between WilTel' MAPs only.

6.2Network Availability.  Network Availability is a measurement of the percent
of total time that service is operative when measured over a 365 consecutive day
(8760 hour) period. DS-3 and Optical SONET Services are considered inoperative
when there has been a loss of signal or when

3

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two consecutive 15 second loop-back tests confirm the observation of a bit error
rate equal to or worse than 1 × 10-6. For DS-N level Services on WilTel'
network, availability shall be 99.95% from MAP to MAP measured over a one-year
period. For OC-N level Services on WilTel' network, availability shall be 99.95%
from MAP to MAP measured over a one-year period. Network availability standards
for Third Party Services shall be established by the Third Party Provider.

6.3Mean Time to Restore.  Mean Time to Restore (MTTR) shall be the average time
required to restore service and resume availability and is stated in terms of
equipment and cable outages. The time is measured from the moment the outage is
reported until the service is available. With respect to Metro Private Line
Service, WilTel has an objective of repairing network equipment within an
average of two (2) hours and an objective to have the first fiber on a cable cut
restored within an average of six (6) hours. WilTel will undertake repair
efforts on equipment or fiber when WilTel first becomes aware of the problem, or
when notified by Customer and Customer has released all or part of the Service
for testing. The maintenance standards in this Section 6.3 only apply for
equipment or fiber on WilTel' owned and operated network and from WilTel' MAP to
WilTel' MAP.

6.3Error Free Seconds.  Performance is noted in Error Free Seconds (Error Free
Seconds ("EFS"), while Available) which is a measure of the percentage of total
seconds that do not contain bit errors over a consecutive twenty-four (24) hour
period. Performance shall be measured on a one-way basis using a Pseudo Random
Bit Sequence test pattern as defined in CCITT Recommendation 0.151. For Services
on WilTel' owned and operated network, EFS shall be 99.5% from MAP to MAP
measured over a one-year period. For Third Party Services, the EFS standards
shall be established by the Third Party provider.

Section 7. Product Intervals

7.1Implementation Intervals.  WilTel' standard service implementation interval
for DSN and OCN Service is set forth below in Table K.3. Third Party Service
implementation intervals shall be determined on an individual case basis. WilTel
shall make reasonable efforts to provide WilTel' Services within its standard
service implementation interval. Failure of WilTel to deliver by such date shall
not constitute a default under the Agreement and WilTel shall not be liable to
pay to Customer any penalties or damages for WilTel' failure to meet such
standard service implementation intervals.

Table K.3
Implementation Intervals

Service Type

--------------------------------------------------------------------------------

  Standard Interval
MAP to MAP

--------------------------------------------------------------------------------

DS-1   N/A DS-3   25 calendar days OC-3   30 calendar days OC-12   30 calendar
days OC-48   IBC OC-48 Wave   IBC

Section 8. Planned Network Maintenance Activity

8.1Timing.  WilTel shall avoid performing network maintenance between 0600 to
2200 Central Time, Monday through Friday, inclusive, that will have a disruptive
impact on the continuity or performance level of Customer's Metro Private Line
Service. However, the preceding sentence does not apply to restoration of
continuity to a severed or partially severed fiber optic cable,

4

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restoration of dysfunctional power and ancillary support equipment, or
correction of any potential jeopardy conditions. WilTel will use commercially
reasonable efforts to notify Customer prior to emergency maintenance.

8.2Notice.  WilTel shall provide Customer with electronic mail, telephone,
facsimile, or written notice of all non-emergency, planned network maintenance:
(i) not less than *** business days prior to performing maintenance that, in its
reasonable opinion, has a substantial likelihood of affecting Customer's traffic
for up to *** milliseconds, and (ii) not less than *** business days prior to
performing maintenance that, in its reasonable opinion, has a substantial
likelihood of affecting Customer traffic for more than *** milliseconds. If
WilTel' planned activity is cancelled or delayed, WilTel shall promptly notify
Customer and shall comply with the provisions of this Section to reschedule any
delayed activity.

Section 9. Warranty

        WilTel warrants that it shall provide Metro Private Line Service in
accordance with the applicable Technical Specifications set forth above. WilTel
shall use commercially reasonable efforts under the circumstances to remedy any
delays, interruptions, omissions, mistakes, accidents or errors in the Service
and restore such Service to comply with the terms hereof. THE FOREGOING WARRANTY
IS THE SOLE AND EXCLUSIVE WARRANTY AND IS PROVIDED IN LIEU OF ALL OTHER
WARRANTIES WHETHER EXPRESS OR IMPLIED INCLUDING WITHOUT LIMITATION THE IMPLIED
WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE OUTAGE
CREDITS REMEDY PROVIDED TO CUSTOMER AS SET FORTH IN SECTION 5 OF THIS SERVICE
SCHEDULE IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO CUSTOMER AND IS IN LIEU OF
ALL OTHER REMEDIES, REGARDLESS OF WHETHER THIS WARRANTY FAILS OF ITS ESSENTIAL
PURPOSE.

Section 10. FCC Regulation

        Customer represents that more than ten percent (10%) of the total
traffic carried on each circuit provided pursuant to this Service Schedule is
interstate (including international) traffic. If it is determined at any time
that any circuit provided hereunder is subject to regulation by a U.S. state
regulatory agency, the service or circuit may be provided by WilTel or its
affiliates pursuant to applicable state laws, regulations and applicable
tariffs, or WilTel and its affiliates my discontinue provision of the affected
Service or circuit.

--------------------------------------------------------------------------------

***Certain information on this page has been omitted and filed separately with
the Commission. Confidential treatment has been requested with respect to the
omitted portions.

5

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        IN WITNESS WHEREOF, THE PARTIES HAVE INDICATED THEIR AGREEMENT BY
SIGNING BELOW.

UNIVERSAL ACCESS INC.:   WILTEL COMMUNICATIONS, LLC:
/s/  BRIAN CODERRE      

--------------------------------------------------------------------------------

Signature of Authorized Representative

 
/s/  T.J. GALLAGHER      

--------------------------------------------------------------------------------

Signature of Authorized Representative
Brian Coderre

--------------------------------------------------------------------------------

Printed Name

 
T.J. Gallagher

--------------------------------------------------------------------------------

Printed Name

Controller

--------------------------------------------------------------------------------

Title

 
Vice President

--------------------------------------------------------------------------------

Title

March 14, 2003

--------------------------------------------------------------------------------

Date
 
March 14, 2003

--------------------------------------------------------------------------------

Date

6

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Schedule 13

Metro Access Private Line Service

        This Service Schedule is a schedule to and a part of that Amended and
Restated Master Services Agreement No.                        ("MSA") by and
between Williams Communications, LLC ("Williams"), and Customer, provided
however, that Williams may designate an affiliate to provide any portion of the
Metro Access Wave Service.

Section 1. Metro Optical Wave Services

1.1Metro Optical Wave Service Description.  Williams' Metro Access Wave Service
("Metro Wave Service") consists of protected or unprotected, concatenated OC-48
and OC-192 wavelengths. To provide Metro Wave Service, Williams uses dense
wavelength division multiplexing ("DWDM") technology to multiplex OC-48 and
OC-192 signals at unique wavelengths over a single optical fiber. Metro Wave
Service will originate at the fiber cross connect in a Williams' metro access
point ("MAP(s)") designated in the applicable Service Order as the origination
point, and will terminate at the fiber cross connect in the MAP designated in
applicable the Service Order as the termination point. The MAPs constituting the
end points of each Metro Wave Service circuit shall both be located within the
same Metro Wave Market, as defined below, or shall be located within adjacent
Metro Wave Markets (for example, a Metro Wave Service circuit may extend between
MAPs located in Anaheim and Los Angeles). Protected Metro Wave Service is an
optional Service configuration in which Williams' owned or operated equipment
located at the originating MAP (i.e., the MAP where Customer transfers its
traffic to Williams) duplicates Customer's signal and transmits each signal over
separate optical fibers to the terminal MAP. Williams owned or operated
equipment located in the terminal MAP chooses the signal of superior quality, or
the surviving signal if only one signal arrives, and delivers it to Customer.
Unprotected Metro Wave Service is a Service configuration where only one signal
is transmitted between MAPs. The provisions of Article 4 of the MSA (Local
Access Services) shall not apply to Metro Wave Service and Metro Wave Service
shall not be considered a Third Party Service.

1.2Timing.  Metro Optical Wave Service does not include a timing source.
Customer must provide a clocking source for its equipment.

Section 2. Service Availability

        Service Availability.  Williams offers Metro Wave Service in select
locations in the cities set forth below (each a "Metro Wave Market"):

METRO WAVE MARKETS

Anaheim   Los Angeles   Santa Clara Atlanta   Miami   St. Louis Baltimore  
Minneapolis   San Francisco Boston   Newark   San Jose Chicago   New York  
Seattle Dallas   Philadelphia   Washington, D.C. Houston   Phoenix    

Williams may add new Metro Access Markets or remove existing Metro Access
Markets by providing written or electronic notice to Customer. Any adjustments
shall only be effective on a prospective basis and shall not apply to Service
Orders placed by Customer and accepted by Williams prior to the effective date
of the adjustment.

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Section 3. Recurring Rates and Charges

3.1Monthly Recurring Rates.  

        OC-48 Metro Wave Charges. WilTel will provide Customer with a Rate Sheet
for this Service. Pricing for the Metro Wave Service is reflected in the Service
Order, but will not exceed the rates set forth in the Rate Sheet.

b.OC-192 Metro Wave Charges.    OC-192 Metro Wave Service is offered on an
individual case basis and pricing for each OC-192 Optical Wave Service circuit
requested by Customer shall be developed on an individual case basis. Pricing
and any additional terms and conditions for an OC-192 Metro Wave Service circuit
shall be set forth on the applicable Service Order accepted by Williams.

Section 4. Non-Recurring Rates and Charges

4.1Non-Recurring Charges.  Non-Recurring Charges may be incurred for OC-48 and
OC-192 Metro Wave Service. Non-Recurring Charges are set forth in Table A.1
below.

Table A.1
Non-Recurring Charges

 
  OC-48 Wave

--------------------------------------------------------------------------------

  OC-192 Wave

--------------------------------------------------------------------------------

 
  Unprotected
Wave

--------------------------------------------------------------------------------

  Protected
Wave

--------------------------------------------------------------------------------

  Unprotected
Wave

--------------------------------------------------------------------------------

  Protected
Wave

--------------------------------------------------------------------------------

Installation   ***   ***   ***   *** Change Of Service Order Charge            
      Pre-engineering   ***   ***   ***   ***   Post-engineering   ***   ***  
***   *** Order Cancellation                   Pre-engineering   ***   ***   ***
  ***   Post-engineering   ***   ***   ***   *** Order Expedite   ***   ***  
***   *** Cross Connect Install Charge   ***   ***   ***   ***

4.2Installation Charges.  For Williams Services, installation charges shall be
***.

4.3Miscellaneous.  Customer should be aware that from time to time, third-party
charges are levied to Williams after submission of the original Service Order
from Customer. Williams may be obligated to pass these charges to Customer.
Williams will inform Customer of any such charges before the charges are passed
to Customer as referenced in Section 5.3 of the Agreement. Williams cannot
commit that all charges related to any requested Service will always be on the
original Service Order.

4.4Non-Recurring Pricing.  Pricing for Non-Recurring Metro Access Wave Line
Service shall be as set forth in this Section 4 and are subject to change upon
thirty (30) calendar days' written or electronic notice by Williams to Customer.
Price changes shall only be effective on a going-forward basis and shall not
apply to Service Orders placed by Customer and accepted by Williams prior to the
effective date of the respective price change.

Section 5. Outage Credits

        Outage Credits.  Customer acknowledges the possibility of an
unscheduled, continuous and/or interrupted period of time during which Metro
Wave Service fails to conform to the Technical Specifications below (an
"Outage"). An Outage shall begin upon the earlier of Williams' actual

--------------------------------------------------------------------------------

***Certain information on this page has been omitted and filed separately with
the Commission. Confidential treatment has been requested with respect to the
omitted portions.

2

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knowledge of the Outage or Williams' receipt of notice from the Customer of the
Outage. In the event of an Outage, Customer shall be entitled to a credit
("Outage Credit") upon Williams' receipt of Customer's written request for such
Outage Credit. The amount of the Outage Credit for Metro Wave Service shall be
an amount equal to 1/720 of the monthly recurring charge for that portion of the
Metro Wave Service which is subject to the Outage for each hour in excess of the
first two (2) consecutive hours that the affected Metro Wave Service fails to
conform to the Technical Specifications set forth below.

5.2Excessive Outages.  If a single circuit experiences either (a) three (3) or
more outages of fifteen (15) minutes duration or longer during any thirty
(30) day period, or (b) one or more outages of fifteen (15) minutes each in each
of three consecutive months or (c) one (1) outage of more than twenty-four
(24) consecutive hours in a one (1) calendar month period, ("Excessive Outage"),
Customer shall be entitled, in addition to the applicable Outage Credit, if any,
to terminate such circuits as are affected by the Excessive Outage without
liability for the Early Termination Charge set forth in Section 6.4 of the
Agreement. However, Customer shall be liable for any termination liability
associated with Third Party Local Access Service or any other Third Party
Service associated with such disconnection.

5.3Remedy.  The Outage Credit and the right to terminate for an Excessive Outage
as set forth in this Section 5 shall be the sole and exclusive remedy of
Customer in the event of any Outage and under no circumstances shall an Outage
be deemed a default under the Agreement.

5.4Limitations.  Customer shall not receive an Outage Credit if the Outage is:
(i) of a duration of less than two (2) consecutive hours; (ii) caused by
Customer or others authorized by Customer to use the Metro Access Optical Wave
Services under the MSA; (iii) due to the failure of power, facilities,
equipment, systems or connections not provided by Williams; (iv) caused by the
failure of Third Party Local Access Service to Williams' owned and operated
network; (v) the result of scheduled maintenance where Customer has been
notified of scheduled maintenance in advance; or (vi) due to a Force Majeure
event as defined in Section 8.5 of the Agreement.

5.5Credit Payment.  Williams shall credit Customer with Outage Credits on the
next monthly invoice for the affected Service.

Section 6. Technical Specifications

6.1Technical Specifications.  The standards and specifications for Metro Wave
Service described in Sections 6.2 and 6.3 are measured and apply on a one-way
basis between the MAPs constituting the end points of a Metro Wave Service
circuit.

6.2Network Availability.  

a.Network availability is a measurement of the percent of total time that Metro
Wave Service is operative when measured over a 365 consecutive day (8760 hour)
period. For unprotected Metro Wave Services on Williams' network, availability
shall be 99.339% measured over a one-year period. For protected Metro Wave
Services on Williams network, availability shall be 99.95% measured over a
one-year period. Network availability may vary depending upon the length of the
Metro Wave Service circuit.

b.Performance is noted in error free seconds ("EFS"), which is a measure of the
percentage of total seconds that do not contain bit errors over a period of
thirty (30) consecutive days measured while Service is available, as described
above. For unprotected Metro Wave Services on Williams' network, EFS shall be
99.076% measured over a one-year period. For protected Metro Wave Service on
Williams network, EFS shall be 99.5% measured over a one-year period.

3

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6.3Monitoring.  Williams shall provide the following network monitoring services
and reporting procedures for Metro Wave Service.

a.Remote Alarm Surveillance.    Williams shall provide remote alarm surveillance
and sectionalization equipment and shall monitor Metro Wave Service for
disruptions on Williams' owned and operated network in accordance with
Telecordia GR-253-CORE SONET Transport Systems Common Generic Criteria
(Dec. 1997).

b.Notification.    In the event Williams receives an alarm that, in Williams'
opinion, affects or may reasonably affect the performance or availability of
Metro Wave Service, Williams will notify the Customer's designated contact for
receiving such notices by electronic mail, telephone, or facsimile. Such notice
will include (i) the type and status of alarm or the condition that caused the
alarm, (ii) the estimated time to repair, (iii) and the suspected cause of the
alarm. Williams will report the status of repair work and an estimate of the
time to complete the repair.

6.4Mean Time to Restore.  Mean Time to Restore (MTTR) shall be the average time
required to restore service and resume availability and is stated in terms of
repairing Williams' equipment and cable outages. The time is measured from the
moment the outage is reported until the service is available. With respect to
Metro Wave Service, Williams has an objective of repairing network equipment
within an average of two (2) hours and an objective to have the first fiber on a
cable cut restored within an average of six (6) hours. Williams will undertake
repair efforts on equipment or fiber when Williams first becomes aware of the
problem, or when notified by Customer and Customer has released all or part of
the Service for testing. The maintenance standards in this Section 6.4 only
apply for Williams' equipment and fiber on Williams' owned and operated network
between the MAPs constituting the end points of the affected Metro Wave Service
circuit.

Section 7. Product Intervals

        Implementation Intervals.  Williams' standard service implementation
intervals for a Metro Wave Service circuit are set forth below in Table A2.
Standard implementation intervals vary depending on the type of circuit ordered
and whether such circuit is intended to be interconnected with an interexchange
wave service also ordered from Williams. Third Party Service implementation
intervals shall be determined on an individual case basis. Williams shall make
reasonable efforts to provide Metro Wave Service within its standard service
implementation interval. Failure of Williams to deliver Metro Wave Service by
such date shall not constitute a default under the MSA and Williams shall not be
liable to pay to Customer any penalties or damages for Williams' failure to meet
such standard service implementation intervals.

Table A.2
Implementation Intervals

Service Type

--------------------------------------------------------------------------------

  Standard Interval for Metro Wave
Service Only

--------------------------------------------------------------------------------

  Standard Interval for Metro Wave Service Ordered with a Williams IXC Wave
Service

--------------------------------------------------------------------------------

OC-48 Waves   *** calendar days   *** calendar days OC-192 Waves   ICB   ICB

Section 8. Planned Network Maintenance Activity

8.1Timing.  Williams shall avoid performing network maintenance between 0600 to
2200 Central Time, Monday through Friday, inclusive, that will have a disruptive
impact on the continuity or

--------------------------------------------------------------------------------

***Certain information on this page has been omitted and filed separately with
the Commission. Confidential treatment has been requested with respect to the
omitted portions.

4

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performance level of Customer's Metro Wave Service. However, the preceding
sentence does not apply to restoration of continuity to a severed or partially
severed fiber optic cable, restoration of dysfunctional power and ancillary
support equipment, or correction of any other emergency conditions. Williams
will use commercially reasonable efforts to notify Customer prior to emergency
maintenance.

8.2Notice.  Williams shall provide Customer with notice of all non-emergency,
planned network maintenance by mail, electronic mail, telephone, or facsimile:
(i) not less than *** business days prior to performing maintenance that, in its
reasonable opinion, has a substantial likelihood of affecting Customer's traffic
for up to *** milliseconds, and (ii) not less than *** business days prior to
performing maintenance that, in Williams' reasonable opinion, has a substantial
likelihood of affecting Customer traffic for more than *** milliseconds. If
Williams' planned activity is cancelled or delayed, Williams shall promptly
notify Customer and shall comply with the provisions of this Section to
reschedule any delayed activity.

Section 9. Warranty

        Williams warrants that Metro Wave Service shall be provided to Customer
in accordance with the applicable Technical Specifications set forth above.
Williams shall use commercially reasonable efforts under the circumstances to
remedy any delays, interruptions, omissions, mistakes, accidents or errors in
the Service and restore such Service to comply with the terms hereof. THE
FOREGOING WARRANTY IS THE SOLE AND EXCLUSIVE WARRANTY AND IS PROVIDED IN LIEU OF
ALL OTHER WARRANTIES, WHETHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
THE IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
THE OUTAGE CREDITS REMEDY AND RIGHT TO TERMINATE FOR EXCESSIVE OUTAGES PROVIDED
TO CUSTOMER AS SET FORTH IN SECTION 5 OF THIS SERVICE SCHEDULE IS THE SOLE AND
EXCLUSIVE REMEDY PROVIDED TO CUSTOMER AND IS IN LIEU OF ALL OTHER REMEDIES,
REGARDLESS OF WHETHER THIS WARRANTY FAILS OF ITS ESSENTIAL PURPOSE.

--------------------------------------------------------------------------------

***Certain information on this page has been omitted and filed separately with
the Commission. Confidential treatment has been requested with respect to the
omitted portions.

5

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Section 10 FCC Regulation

        Customer represents that more than ten percent (10%) of the total
traffic carried on each Metro Wave Service circuit provided pursuant to this
Service Schedule is interstate traffic. If it is determined at any time that any
Metro Wave Service circuit provided hereunder is subject to regulation by a U.S.
state regulatory agency or District of Columbia regulatory agency, the service
may be provided by Williams or its affiliates pursuant to applicable state laws,
regulations and applicable tariffs, or Williams and its affiliates my
discontinue provision of the affected Metro Wave Service.

        IN WITNESS WHEREOF, THE PARTIES HAVE INDICATED THEIR AGREEMENT BY
SIGNING BELOW.

UNIVERSAL ACCESS, INC.:   WILTEL COMMUNICATIONS, LLC:
/s/  BRIAN CODERRE      

--------------------------------------------------------------------------------

Signature of Authorized Representative
 
/s/  T.J. GALLAGHER      

--------------------------------------------------------------------------------

Signature of Authorized Representative
Brian Coderre

--------------------------------------------------------------------------------

Printed Name
 
T.J. Gallagher

--------------------------------------------------------------------------------

Printed Name
Controller

--------------------------------------------------------------------------------

Title
 
Vice President

--------------------------------------------------------------------------------

Title
March 14, 2003

--------------------------------------------------------------------------------

Date
 
March 14, 2003

--------------------------------------------------------------------------------

Date

6

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Schedule 15

Private Line Qualities of Service Schedule

        This Service Schedule is a schedule to and a part of that Amended and
Restated Master Services Agreement No.                        ("MSA") by and
between Williams Communications, LLC ("Williams"), and Customer.

Section 1. Private Line Qualities of Service

1.1Service Description.  Williams' Private Line Qualities of Service ("PLQoS")
provides domestic DS-3 and Optical SONET (OC-N) circuits which are specifically
dedicated to Customer's use between two (2) points specified by the parties in a
Service Order and meeting the technical requirements as defined below in
Section 5, Technical Specifications for Private Line Qualities of Service. In
addition, PLQoS includes only those circuits where the entire circuit is located
solely upon the Williams' owned and operated network and both end points of such
circuit originate and terminate at a QoS City as set forth below. Williams'
Private Line Qualities of Service includes the four (4) levels of Service set
forth below.

a.Platinum.    Platinum PLQoS is a protected Williams' Service, offering maximum
availability and geographically diverse protection paths. The time it takes for
the Williams' Platinum PLQoS to switch paths in the event of a fiber cut or
electronic failure ("Switch Time") is between twenty (20) and one hundred eighty
(180) milliseconds. Availability for Platinum PLQoS is 100.00%, excluding Switch
Time.

b.Gold.    Gold PLQoS is a protected Williams' Service, offering superior
availability and geographically diverse protection paths. The Switch Time for
Williams' Gold PLQoS is between two hundred (200) milliseconds and two
(2) seconds. Availability for Gold PLQoS is 99.997%, excluding Switch Time.

c.Silver.    Silver PLQoS is an unprotected Williams' Service but offers high
availability. Williams' Silver PLQoS offers no fiber or electronic diversity.
Availability for Silver PLQoS is 99.5%.

d.Bronze.    Bronze PLQoS is a restorable Williams' Service, which can be
preempted when capacity is needed for Platinum or Gold PLQoS. If Bronze PLQoS is
preempted, the Service will be restored when excess capacity becomes available.
Bronze PLQoS is offered as a Service level objective and therefore no Outage
Credits will apply. Williams' Availability objective for Bronze PLQoS is 99.00%.

Section 2. Recurring Rates and Charges

2.1Monthly Recurring Rates.  WilTel will provide Customer with a Rate Sheet for
this Service. Charges for Services wholly on WilTel's owned and operated
network, which originate and terminate in a QoS City are set forth in applicable
Service Order, but will not exceed the rates set forth in the Rate Sheet.
Pricing contained in Quotes but not yet included in a Service Order are valid
only for thirty (30) days. The monthly recurring charge ("MRC") for any Service
is firm for the term reflected on the related Service Order. Pricing for any
Service not on WilTel's network will be determined on an individual case basis
and set forth on Customer's Service Order. WilTel has select cities available
for provisioning of the PLQoS Service. WilTel may add new PLQoS Cities, which
will be listed on the WilTel's Customer Service Website at
http://www.WilTelcommunications.com/network/customer-service/process-policy.html.
A list of the select cities including the levels of Service available in each
city is also available upon request. Gold PLQoS is the standard upon which other
PLQoS Services are based. Platinum PLQoS is a

1

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premium Service above and beyond the Gold PLQoS. Silver PLQoS is discounted when
compared to Gold PLQoS, and Bronze PLQoS is the most economical PLQoS.

Section 3. Non-Recurring Rates and Charges

3.1Non-Recurring Charges.  Non-Recurring Charges may be incurred for Private
Line connections. Non-Recurring Charges are set forth in Table A.3 below.

Table A.3
Non-Recurring Charges

 
  DS-3

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Order Installation   *** Change Of Service Date Charge (1st change free)   ***  
Pre-engineering   ***   Post-engineering   *** Order Cancellation      
Pre-engineering   ***   Post-engineering   *** Reconfiguration Charge   ***
Access Service Request (ASR)   *** Access Service Request (ASR) Change   ***
Order Expedite   ***

3.2Installation Charges.  For Williams Services, installation charges shall be
***.

3.3Miscellaneous.  Customer should be aware that from time to time, third-party
charges are levied to Williams after submission of the original Service Order
from Customer. Williams may be obligated to pass these charges to Customer.
Williams will inform Customer of any such charges before the charges are passed
to Customer. Williams cannot commit that all charges related to any requested
Service will always be on the original Service Order.

3.4Non-Recurring Pricing.  Pricing for Non-Recurring Private Line Quality of
Service charges shall be as set forth in this Section 3 and are subject to
change upon thirty (30) calendar days' written or electronic notice by Williams
to Customer. Price changes shall only be effective on a going-forward basis and
shall not apply to Service Orders placed by Customer and accepted by Williams
prior to the effective date of the respective price change.

Section 4. Outage Credits

4.1Outage Credits.  Customer acknowledges the possibility of an unscheduled
period of time during which Williams PLQoS Service fails to conform to the
Technical Specifications below ("Outage"). An Outage shall begin upon the
earlier of Williams' actual knowledge of the Outage or Williams' receipt of
Customer's notice of such Outage. The Customer shall also provide Williams a
written request for the Outage Credit reasonably identifying the Outage. Such
request shall indicate the Technical Specification to which Customer claims the
Service has failed to conform and shall include supporting documentation
evidencing that the Service has failed to comply with the applicable Technical
Specifications. In the event of an Outage, Customer shall be entitled to a
credit ("Outage Credit") pursuant to this Schedule upon Williams' receipt of
Customer's written request for such Outage Credit. The amount of the Outage
Credit for Williams' PLQoS Service will be an amount equal to the Outage Credit
percentages, set forth in Table A.5a and A.5b below, of the monthly recurring
charges for the affected circuit(s) (as stated on the applicable Service Order)
when Williams Service does not conform to the Technical Specifications on a
monthly basis.

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***Certain information on this page has been omitted and filed separately with
the Commission. Confidential treatment has been requested with respect to the
omitted portions.

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Bronze PLQoS is offered only as a Williams' Service objective and therefore
Customer will not receive Outage Credits for the Bronze PLQoS service level. If
the Williams PLQoS Service fails to conform for the next consecutive month to
the same Technical Specifications as in the prior month, the Customer shall be
entitled to receive the next percentage level of the Outage Credits for the
affected circuits. After any month in which a specific variable of the Technical
Specifications for the Service is corrected from its prior non-conformance, the
Outage Credit percentage for that specific variable will be reset at month one
(1). Outage Credits shall never exceed 100.00% of the monthly recurring charge
("MRC") for a circuit. If in any month the Williams Service fails to conform to
the Technical Specifications of Network Availability and one of the other
Technical Specifications, Customer shall be awarded the higher Outage Credit
amount.

a.Network Availability.    EXAMPLE 1: Assumption: Customer purchases Platinum
PLQoS. If, in the first (1st) month, the average Availability of all Platinum
PLQoS services ordered by Customer is less than 100.00%, excluding Switch Time,
Customer would receive 100.00% of the MRC of each individual circuit which did
not meet 100.00% Availability. If, in the second (2nd) consecutive month, the
average Availability of all Platinum PLQoS services ordered by Customer is less
than 100.00%, excluding Switch Time, Customer would receive 100.00% of the MRC
of each individual circuit which did not meet 100.00% Availability. EXAMPLE 2:
Assumption: Customer purchases Silver PLQoS. If, in the first (1st) month, the
average Availability of all Silver PLQoS services ordered by Customer is less
than 99.5%, excluding Switch Time, Customer would receive 10% of the MRC for
each individual circuit which did not meet 99.5% Availability. If, in the second
(2nd) consecutive month, the average Availability of all Silver PLQoS services
ordered by Customer is less than 99.5%, excluding switching times, Customer
would receive 15% of the MRC for each individual circuit which did not meet
99.5% Availability. If, in the third (3rd) month, the average Availability of
all Silver PLQoS services ordered by Customer is greater than or equal to 99.5%,
excluding switching times, Customer would not receive a credit on any circuits
and the next month that the average Availability of all Silver PLQoS services
ordered does not meet 99.5% Customer would receive 10% of the MRC of each
individual circuit which did not meet 99.5% Availability.

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Table A.4a
Outage Credits—Availability

Remedy Level

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  Months of Outage

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  Maximum Outage Credit Percentage

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Platinum   Failure to meet applicable Availability standard in any month   100%
of the Monthly Recurring Charge for the affected circuits Gold   1st Month of
failure to meet applicable Availability standard   30% of the Monthly Recurring
Charge for the affected circuits     2nd Consecutive month of Failure to meet
applicable Availability standard   35% of the Monthly Recurring Charge for the
affected circuits     3rd Consecutive month of Failure to Meet applicable
Availability standard   40% of the Monthly Recurring Charge for the affected
circuits     4th Consecutive month of failure to meet applicable Availability
standard   45% of the Monthly Recurring Charge for the affected circuits     5th
Consecutive month of failure to meet applicable Availability standard   50% of
the Monthly Recurring Charge for the affected circuits Silver   1st Month of
failure to meet applicable Availability standard   10% of the Monthly Recurring
Charge for the affected circuits     2nd Consecutive month of failure to meet
applicable Availability standard   15% of the Monthly Recurring Charge for the
affected circuits     3rd Consecutive month of failure to meet applicable
Availability standard   20% of the Monthly Recurring Charge for the affected
circuits     4th Consecutive month of failure to meet applicable Availability
standard   25% of the Monthly Recurring Charge for the affected circuits     5th
Consecutive month of failure to meet applicable Availability standard   30% of
the Monthly Recurring Charge for the affected circuits

b.Mean Time To Restore, Error Free Seconds, Severely Errored Seconds and
Latency.

Table A4b
Outage Credits—Mean Time to Restore, Error Free Seconds, Severely Errored
Seconds, Latency

Months of Outage

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  Maximum Outage Credit Percentage

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1st Month of any Outage Condition   15% of Monthly Recurring Charge for affected
circuits 2nd Consecutive Month of the same Outage Condition   20% of Monthly
Recurring Charges for affected circuits 3rd Consecutive Month of the same Outage
Condition   25% of Monthly Recurring Charges for affected circuits 4th
Consecutive Month of the same Outage Condition   30% of Monthly Recurring
Charges for affected circuits 5th Consecutive Month of the same Outage Condition
  35% of Monthly Recurring Charges for affected circuits

Example 3: Assumption: Customer purchases any PLQoS. If the first (1st) month,
the average percentage of Error Free Seconds per day for all Williams PLQoS
Services ordered is less than 99.99% and the average number of Severely Errored
Seconds per day for all Williams PL QoS services ordered is greater than 8,
Customer would receive 15% of the MRC for each individual circuit which failed
to meet either the 99.99% Error Free Seconds or the 8 Severely Errored Seconds
per day. If, in the second (2nd) month, the average Error Free Seconds for all
Williams PLQoS Services ordered is less than 99.99% but the number of Severely
Errored Seconds per day

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for all Williams PLQoS Services orders is less than 8, Customer would receive
20% of the MRC for each individual circuit which failed to meet the 99.99% Error
Free Seconds. If, in the third (3rd) month, the Average Error Free Seconds for
all Williams PLQoS Services ordered is greater than 99.99% Customer would not
receive a credit on any circuits and the next month that any of the technical
specifications were not met the remedy structure would be reset to the 15%
credit level. Example 4: If in month one Williams fails to meet the 99.997%
Availability metric for Gold PLQoS on a $10,000.00 circuit and also in that same
month fails to meet the 99.99% Error Free Seconds metric, Customer would receive
a credit on the next month's invoice equal to the greater of 30% MRC for the
Gold Availability service level or 15% MRC for failure to meet the Error Free
Seconds variable. So in this example Customer would receive $3,000.00 in credit
on the next month's invoice ($10,000.00 * 30% = $3,000.00). All examples assume
that Customer has complied with the procedures for requesting an Outage Credit.

4.2Excessive Outages.  For Platinum and Gold PLQoS only, if a single circuit
experiences either (a) three (3) or more outages of fifteen (15) minutes
duration or longer during any thirty (30) day period, or (b) one or more outages
of fifteen (15) minutes each in each of three (3) consecutive months or (c) one
(1) outage of more than twenty-four (24) consecutive hours in a one (1) calendar
month period, ("Excessive Outage"), Customer shall be entitled, in addition to
the applicable Outage Credit, if any, to terminate such circuits as are affected
by the Excessive Outage without liability for the Early Termination Charge set
forth in Section 6.4 of the Agreement. However, Customer shall be liable for any
termination liability associated with Third Party Local Access Service or any
other Third Party Service associated with such disconnection.

4.3Remedy.  The Outage Credit and right to terminate for an Excessive Outage as
set forth in this Section 4 shall be the sole and exclusive remedy of Customer
in the event of any Outage and under no circumstances shall an Outage be deemed
a default under the MSA. The Outage Credit amount provided to Customer will not
be cumulative but will be the greater of the applicable Outage Credit for
Availability or the Technical Specification variables addressed in Table A4b.

4.4Limitations  Customer shall not receive an Outage Credit if the Outage is
(i) of a duration of less than two (2) consecutive hours; (ii) caused by
Customer or others authorized by Customer to use the Services under the
Agreement; (iii) due to the failure of power, facilities, equipment, systems or
connections not provided by Williams; (iv) caused by the failure of Third Party
Local Access Service to Williams' fiber optic network; (v) the result of
scheduled maintenance where Customer has been notified of scheduled maintenance
in advance; or (vi) due to a Force Majeure event as defined in the Agreement.

4.5Credit Payment.  Outage Credits shall be credited on Customer's next monthly
invoice for the affected Service.

Section 5. Technical Specifications

5.1Technical Specifications  DS-3 service is provided in accordance with ANSI
Standard T1.102 and T1.404. DS-3 Service operates at 44.736 Mbps. Optical SONET
Services are provided in accordance with ANSI Standard T1.105. OC-3 service
operates at 155.52 Mbps, with 3 separate STS-1 signaling paths, and an OC-3c
operating at 155.52 Mbps contains 1 STS-3c signaling path. OC-12 Service
operates at 622.080 Mbps with either 12 separate STS-1 signaling paths or 4
separate STS-3c paths. OC-12C Service operates at 622.080 Mbps with 1 STS-12C
signaling path). The standards by which Williams' Private Line Service is
measured apply on a one-way basis between Williams' POPs only and involves the
five (5) variables set forth in the subsections below.

(a)Network Availability.  Network Availability is a measurement of the average
percent of total time that service is operative when measured in a month. DS-3
and Optical SONET Service is considered inoperative when there has been a loss
of signal or when two consecutive 15

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second loop-back tests confirm the observation of a bit error rate equal to or
worse than 1 × 10-6. A Service deemed inoperative under this description will
not be included in measurements for Error Free Seconds or Severely Errored
Seconds. Network Availability for Williams' PLQoS excludes switch time. Network
Availability, excluding switch time, for Private Line QoS will be as follows:
Platinum QoS has 100.00% availability; Gold QoS has 99.997% availability; Silver
QoS has 99.5% availability and Bronze QoS has 99.00% availability and is a
service objective only. Network Availability for Services of a Third Party
Provider is established by the Third Party Provider. The local access
availability standards for DS-3 and Optical SONET Services are established by
the Local Access Service provider and are not considered in determining whether
Williams Service has met the Technical Specifications in determining Outages and
Outage Credits.

(b)Mean Time to Restore.  Mean Time to Restore (MTTR) shall be the average time
required to restore Service and resume availability when measured in a month.
The time is measured from the moment the outage is reported until the first
fiber is repaired. With respect to Williams Private Line Service, Williams will
repair network equipment within an average of two (2) hours and the first fiber
on a cable cut within an average of four (4) hours when averaged over a the
rolling periods set forth above. Williams will undertake repair efforts on
equipment or fiber when Williams first becomes aware of the problem, or when
notified by Customer and Customer has released all or part of the Service for
testing. The maintenance standards in this Section only apply for equipment or
fiber on Williams' owned and operated network and from Williams' POP to
Williams' POP.

(c)Error Free Seconds.  Performance is noted in Error Free Seconds (Error Free
Seconds ("EFS")) which is a measure of the percentage of the total seconds that
do not contain bit errors over a consecutive twenty-four (24) hour period and
averaged over a one month (720 hour) period. Long term performance shall be
derived from Errored Seconds incidents in accordance with Telecordia
Technologies Generic Criteria GR-499-CORE, Section 4.2 for DS-n services and
GR-253-CORE. For Services on the Williams' network EFS shall be 99.99% per day.
For Services not on Williams' network, the EFS standard for local access DS3 and
Optical SONET Service is established by the third party services provider.
Services from a third party provider are not considered in determining whether
Williams Service has met the Technical Specifications in determining Outages and
Outage Credits.

(d)SONET Severely Errored Seconds.  A SONET Severely Errored Second ("SSES") is
any one-second interval in which 2400 or more STS Path BIP errors were detected,
AIS-P, LOP-P, or lower level, traffic related near end defect is detected in
accordance with Telecordia Technologies Generic Criteria GR-253-CORE,
Section 6.2.2.5.1. The number of Severely Errored Seconds shall not exceed eight
(8) in a twenty-four hour period averaged over one month (720 hours). For
Services not on Williams' network, the SSES standard for local access DS3
Service is established by the Third Party Services provider.

(e)Latency.  Latency is defined as the one-way trip time required for a bit to
travel between Williams' owned and operated POPs. Latency is measured as
one-half of the roundtrip delay from the local customer demarcation point to the
remote customer demarcation point. For Williams' PLQoS Services on Williams'
network average Latency will be one millisecond (1ms) per one hundred
(100) route miles.

Section 6. Product Intervals

        Implementation Intervals.  Williams' standard service implementation
interval for DS3 Service is set forth below in Table A.6. Third Party Provider
Service implementation intervals shall be determined on an individual case
basis. Williams shall make reasonable efforts to provide Williams' Services
within its

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standard service implementation interval. Failure of Williams to deliver by such
date shall not constitute a default under the MSA and Williams shall not be
liable to pay to Customer any penalties or damages for Williams' failure to meet
such standard service implementation intervals, except for the credits set forth
in Section 3.4 of the Agreement.

Table A.6
Implementation Intervals

Service Type

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  Standard Interval POP to POP

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DS-3   *** calendar days OC3   *** calendar days OC 12   *** calendar days OC48
  *** calendar days

Section 7. Planned Network Maintenance Activity

7.1Timing.  Williams shall avoid performing network maintenance between 0600 to
2200 Central Time (or local time with respect to facilities comprising
international Service), Monday through Friday, inclusive, that will have a
disruptive impact on the continuity or performance level of Customer's Service.
However, the preceding sentence does not apply to restoration of continuity to a
severed or partially severed fiber optic cable, restoration of dysfunctional
power and ancillary support equipment, or correction of any potential jeopardy
conditions. Williams will use commercially reasonable efforts to notify Customer
prior to emergency maintenance.

7.2Notice.  Williams shall provide Customer with electronic mail, telephone,
facsimile, or written notice of all non-emergency, planned network maintenance
(i) not less than *** business days prior to performing maintenance that, in its
reasonable opinion, has a substantial likelihood of affecting Customer's traffic
for up to *** milliseconds, and (ii) not less than *** business days prior to
performing maintenance that, in its reasonable opinion, has a substantial
likelihood of affecting Customer traffic for more than *** milliseconds. If
Williams' planned activity is canceled or delayed, Williams shall promptly
notify Customer and shall comply with the provisions of this Section to
reschedule any delayed activity.

Section 8. Warranty

        Williams warrants that Williams' PLQoS shall be provided to Customer in
accordance with the applicable Technical Specifications set forth above.
Williams shall use commercially reasonable efforts under the circumstances to
remedy any delays, interruptions, omissions, mistakes, accidents or errors in
the Service and restore such Service to comply with the terms hereof. THE
FOREGOING WARRANTY IS THE SOLE AND EXCLUSIVE WARRANTY AND IS PROVIDED IN LIEU OF
ALL OTHER WARRANTIES WHETHER EXPRESS OR IMPLIED INCLUDING WITHOUT LIMITATION THE
IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE
OUTAGE CREDITS REMEDY AND RIGHT TO TERMINATE FOR EXCESSIVE OUTAGES PROVIDED TO
CUSTOMER AS SET FORTH IN SECTION 4 OF THIS SERVICE SCHEDULE IS THE SOLE AND
EXCLUSIVE REMEDY PROVIDED TO CUSTOMER AND IS IN LIEU OF ALL OTHER REMEDIES,
REGARDLESS OF WHETHER THIS WARRANTY FAILS OF ITS ESSENTIAL PURPOSE.

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***Certain information on this page has been omitted and filed separately with
the Commission. Confidential treatment has been requested with respect to the
omitted portions.

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        IN WITNESS WHEREOF, THE PARTIES HAVE INDICATED THEIR AGREEMENT BY
SIGNING BELOW.

UNIVERSAL ACCESS, INC.:   WILTEL COMMUNICATIONS, LLC:
/s/  BRIAN CODERRE      

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Signature of Authorized Representative
 
/s/  T.J. GALLAGHER      

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Signature of Authorized Representative
Brian Coderre

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Printed Name
 
T.J. Gallagher

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Printed Name
Controller

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Title
 
Vice President

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Title
March 14, 2003

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Date
 
March 14, 2003

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Date

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AMENDED AND RESTATED MASTER SERVICES AGREEMENT