Document:

<PAGE>   1
                                                                Exhibit 10.15(b)

                               iPHYSICIAN NET INC.
                   1999 NONEMPLOYEE DIRECTOR COMPENSATION PLAN
                             STOCK OPTION AGREEMENT

                  This Agreement is made and entered into by and between
iPhysician Net Inc. (formerly IPNI Communications Corporation), a Delaware
corporation (the "Company") and            ("Director"), as of the ____ day of
_____________, ________ (the "Grant Date").

                              W I T N E S S E T H:

                  WHEREAS, the Board of Directors of the Company (the "Board")
has adopted the iPhysician Net Inc. 1999 Nonemployee Director Compensation Plan
(the "Plan"), a copy of which is attached as Exhibit A, to further the Company's
short- and long-term objectives by attracting and retaining the services of
directors of outstanding competence and by linking the personal interests of
directors to those of the Company's shareholders.

                  NOW, THEREFORE, in consideration of the mutual covenants and
conditions hereinafter set forth and for other good and valuable consideration,
the Company and Director agree as follows:

                  1. Definitions. To the extent not specifically provided
herein, all capitalized terms used in this Agreement will have the same meanings
ascribed to them in the Plan.

                  2.       Stock Options.

                           a. Grant of Option. Subject to the conditions
                  specified in the Plan, the Company hereby grants to Director
                  the right and option (hereinafter referred to as the "Option")
                  to purchase an aggregate of Thirty Thousand (30,000) shares of
                  Stock.

                           b. Purchase Price. The price at which Director will
                  be entitled to purchase the Stock covered by the Option will
                  be           ($ ) per share.

                           c. Term of Option. The Option hereby granted will be
                  in force and effect for a period beginning on the Grant Date
                  through and including the normal close of business of the
                  Company on the tenth anniversary date of its grant, subject to
                  earlier termination as provided in the Plan.

                           d. Exercise of Option. The Option will vest and may
                  be exercised in whole or in part on such terms and subject to
                  such conditions as are specified in the Plan.
<PAGE>   2
                  3. TERMINATION OF SERVICES. If Director's service on the Board
terminates for any reason, Director may exercise the Option, to the extent then
vested as of the date of termination, within one (1) year after such
termination, subject to earlier termination as provided in the Plan.

                  4. INCORPORATION OF THE PLAN. Director understands and agrees
that the Plan is hereby incorporated into this Agreement as if set forth fully
herein and this Agreement is, at all times, subject to the terms and conditions
of the Plan.

                  5. GOVERNING LAW. This Agreement shall be interpreted and
administered under the laws of the State of Delaware.

                  6. AMENDMENTS. This Agreement may be amended only by a written
agreement executed by the Company and Director, provided that, the Company may
amend this Agreement without the consent of Director to the extent that such
amendment is required by applicable federal or state securities laws.

                  IN WITNESS WHEREOF, the Company has caused this Agreement to
be duly executed by its officer thereunto duly authorized, and Director has
hereunto set his or her hand as of the     day of                              ,
                                       ---        -----------------------------
                      .
----------------------

                                 iPhysician Net Inc.

                                 By
                                   ---------------------------------------------
                                 Its
                                    --------------------------------------------

                                 -----------------------------------------------
                                 Director

                                       2

<PAGE>   3
                              iPhysician Net Inc.
                  1999 NONEMPLOYEE DIRECTOR COMPENSATION PLAN
                          BENEFICIARY DESIGNATION FORM

1. PERSONAL INFORMATION.

Name:                    _________________________________

Address:                 _________________________________

City, State, Zip:        _________________________________

Home Phone #:            _________________________________

Social Security Number:  _________________________________

2. BENEFICIARY DESIGNATION.

a. BOARD AND COMMITTEE FEES AND EXPENSES.

     I designate the following individuals or entities as my beneficiaries to
receive any Board and Committee fees owed to me under the iPhysician Net Inc.
1999 Nonemployee Director Compensation Plan (the "Plan") in the event of my
death, subject to the provisions of the Plan:

<TABLE>
<CAPTION>
                                   Name, Address, and Telephone
Primary or Contingent         %    Number of Beneficiary            Relationship
<S>                       <C>      <C>                              <C>

______________________    _____    _______________________________  ____________

                                   _______________________________

                                   _______________________________

______________________    _____    _______________________________  ____________

                                   _______________________________

                                   _______________________________

______________________    _____    _______________________________  ____________

                                   _______________________________

                                   _______________________________

</TABLE>
<PAGE>   4
b. UNEXERCISED OPTIONS. Complete only if different from (a).

I designate the following individuals or entities as the beneficiaries of any
options granted and fully vested under the Plan that have not been exercised by
me prior to the date of my death, subject to the provisions of the Plan:

<TABLE>
<CAPTION>
                                   Name, Address, and Telephone
Primary or Contingent         %    Number of Beneficiary            Relationship
<S>                       <C>      <C>                              <C>

______________________    _____    _______________________________  ____________

                                   _______________________________

                                   _______________________________

______________________    _____    _______________________________  ____________

                                   _______________________________

                                   _______________________________

______________________    _____    _______________________________  ____________

                                   _______________________________

                                   _______________________________

</TABLE>

3. AUTHORIZATION.

I understand that my beneficiary designations revoke all prior beneficiary
designations and will remain in full force and effect until subsequently
changed by me. I further understand that my beneficiary designations may be
revoked and new beneficiaries designated at any time upon my written
notification to the committee appointed by the Board of Directors to administer
the Plan.

_________________________________________    ___________________________
Signature                                    Date

                                       2<PAGE>   1
                                                                Exhibit 10.16(a)

                          GAINEY RANCH CORPORATE CENTER

                                  OFFICE LEASE
<PAGE>   2
                                      INDEX

                          GAINEY RANCH CORPORATE CENTER

                                  OFFICE LEASE

Article 1 - Summary of Selected Matters .......................      1
Article 2 - Definitions .......................................      2
Article 3 - Term and Memorandum of Commencement ...............      2
Article 4 - Rent ..............................................      3
Article 5 - Operating Costs ...................................      3
Article 6 - Security Deposit ..................................      6
Article 7 - Use of Premises ...................................      6
Article 8 - Building Services .................................      7
Article 9 - Taxes .............................................      8
Article 10 - Construction, Tenant Maintenance and Alterations..      9
Article 11 - Fire and Casualty ................................     11
Article 12 - Tenant's Insurance and Indemnity .................     12
Article 13 - Landlord's Insurance .............................     14
Article 14 - Assignment and Subletting ........................     14
Article 15 - Subordination and Attornment .....................     16
Article 16 - Estoppel Certificates ............................     16
Article 17 - Condemnation .....................................     17
Article 18 - Signs ............................................     18
Article 19 - Breach, Default, and Remedies ....................     18
Article 20 - Notices ..........................................     20
Article 21 - Surrender and Holdover ...........................     20
Article 22 - Relocation .......................................     21
Article 23 - General ..........................................     21

Exhibits:    A - Space Plan Drawing Illustrating the Premises
             B - Site Plan of the Project
             C - Definition of Building Shell
Working Drawings and Specifications (to be attached following approval)
Rules and Regulations
<PAGE>   3
                                                           Dated: April 16, 1999

                                  OFFICE LEASE

                                    ARTICLE 1

                           SUMMARY OF SELECTED MATTERS

         NATIONWIDE REALTY INVESTORS, LTD. an Ohio limited liability company
which is qualified to do business in Arizona as Nationwide Realty Investors,
L.L.C. ("Landlord") hereby leases the Premises described below, for the term and
on the terms and conditions set forth in this Lease, to:

         IPNI Communications Corporation, a Delaware corporation ("Tenant")

         1.01 The Premises: Suite 290 on the 2nd floor of the Building
consisting of approximately 5,619 rentable square feet of space as illustrated
in the attached Exhibit A.

         1.02 The Term: 5 years and 0 months, beginning on the Commencement Date
and ending on the Expiration Date.

         1.03 Estimated Commencement and Expiration Dates: August 1, 1999, and
July 31, 2004. However, Tenant Will be allowed to enter said Premises on July
15, 1999 for phone/computer wiring and cabling purposes.

         1.04 Tenant's Proportionate Share: 5.04%.

         1.05 Base Year: Calendar Year 1999 based on actual operating expenses
measured at a maximum 95% occupancy level. All expense increases other than f ox
utilities, real estate taxes and insurance Will be capped at 6% per year over
the prior year. All operating costs determined in accordance with general
accepted accounting principals.

         1.06 Base Rent: $10,697.61 per month beginning on the Commencement
Date, through the twenty second month of the Term, and $11,470.08 per month
beginning on the twenty-third month of the Term through the Lease Expiration
month.

         1.07 Tenant's Address for Pre-occupancy Notices:
                    8777 N. Gainey Center Drive, Suite 285
                    Scottsdale, Az 85258

         1.08 Tenant Improvement Allowance: $15,000.00 to be used at Tenant's
discretion during the first twelve months of the Term providing Tenant receives
Landlord's written approval for all construction specifications and providing
Tenant uses the Landlord's specified contractor. In addition, Landlord will
provide labor and material to paint and shampoo carpet in the original suite 290
consisting of 3,306 rentable square feet.
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         1.09 Date for Tenant's Submission of Space Plan: N/A

         1.10 Security Deposit: $6,061.00.

         1.11 Description of Tenant's Business: Administrative Offices

         1.12 Name of Guarantors: None

                                    ARTICLE 2

                                   DEFINITIONS

         2.01 "Building" means Phase I of the Gainey Ranch Corporate Center,
consisting of the building located at 8777 North Gainey Center Drive,
Scottsdale, Arizona 85258.

         2.02 "Common Areas" means all portions of the Project made available by
Landlord for use in common by all tenants and their employees and invitees;
provided, however, that use of the parking facilities shall be subject to
payment of fees or charges as established by Landlord; and provided further that
all of the Common Areas at all times remain subject to Landlord's exclusive
control and to Landlord's rules and regulations.

         2.03 "Lease years" means successive twelve month periods beginning on
the first day of the first full calendar month coinciding with or following the
commencement of the lease term.

         2.04 "Project" means the Building, and all lands and facilities used in
connection with the Building as reasonably determined from time to time by
Landlord. A site plan for the Project in its initial configuration is attached
as Exhibit B.

         2.05 "Rentable area" means area measured according to BOMA standards as
approved July 31, 1980.

                                    ARTICLE 3

                               TERM AND MEMORANDUM
                                 OF COMMENCEMENT

         3.01 The Term of this Lease, and the date of commencement of the Term,
are set forth in Sections 1.02 and 1.03. Landlord shall not be liable for any
direct or consequential damages resulting from delayed delivery of the Premises,
but the Commencement Date and the Expiration Date shall be postponed by an
amount equal to the period of delay. At the request of either party at any time
following initial occupancy of the Premises by Tenant, Landlord and Tenant shall
execute

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a written memorandum reflecting the date of initial occupancy and confirming the
dates of commencement and expiration of the Lease Term.

                                    ARTICLE 4

                                      RENT

         4.01 Tenant shall pay to Landlord, in advance, on the first day of each
calendar month, without notice, demand, deduction or offset, beginning on the
Commencement Date, Base Rent in the amount set forth in Section 1.06.

         4.02 Tenant shall pay to Landlord a late charge equal to 5% of any
amount not paid within five days after it falls due to compensate Landlord for
costs and inconveniences of special handling and disruption of cash flow. The
assessment or collection of a late charge shall not constitute the waiver of a
default and shall not bar the exercise of other remedies for nonpayment.

         4.03 Tenant shall pay to Landlord, all sales, use, transaction
privilege or other excise tax levied or imposed upon, or measured by, any amount
payable by Tenant under this Lease.

         4.04 All amounts payable to Landlord under this Lease, except the
Security Deposit and except for any amounts payable by Tenant with respect to
construction of tenant improvements in the Premises, constitute rent and shall
be payable to such person and at such place as Landlord may from time to time
designate by written notice to Tenant.

         4.05 Base Rent payable with respect to a period consisting of less than
a full calendar month shall be prorated.

                                    ARTICLE 5

                                 OPERATING COSTS

         5.01 Tenant shall pay to Landlord Tenant's Proportionate Share of the
amount, if any, by which Operating Costs for each subsequent calendar year
exceed the Operating Costs for the Base Year as identified in Section 1.05 (the
"Base Year Amount").

         5.02 From time to time Landlord shall by written notice specify
Landlord's estimate of Tenant's obligation under Section 5.01. Tenant shall pay
one-twelfth of the estimated annual obligation on the first day of each calendar
month. Within ninety days after the end of each calendar year, Landlord shall
provide to Tenant a written summary of the Operating Costs for the calendar
year, determined on an accrual basis by a Certified Public Accountant and broken
down by principal categories of expense. The statement also shall set forth
Tenant's Proportionate Share of the amount

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by which the Operating Costs exceed the Base Year Amount and shall show the
amounts paid by Tenant on account. Any difference between Tenant's obligation
and the amounts paid by Tenant on account shall be paid or refunded, as the case
may be, within fifteen days after the statement is provided. The determination
of the accountant shall be conclusively binding on both Landlord and Tenant.
Late delivery of the annual summary of Operating Costs shall not relieve Tenant
of any obligation with respect to payment of Tenants Proportionate Share of the
Operating Costs.

         5.03 If the mean level of occupancy of the Building during a calendar
year is less than 95% of the rentable area, the Operating Costs shall be
adjusted to reflect the fact that some costs, such as HVAC and janitorial
services, vary with level of occupancy while other costs, such as real estate
taxes, do not. In order to allocate those variable costs to occupied space while
allocating nonvariable costs to occupied and unoccupied space alike, the
accountant shall determine what the total Operating Costs would have been had
the Building been at least 95% occupied during the entire calendar year on the
average, and that adjusted total shall be the figure employed in the statement
and calculations described in Section 5.02. If the mean level of occupancy
exceeds 95%, no adjustments shall be made.

         5.04 During the first and last years of the Term, Tenant's
responsibility for the amount by which Operating Costs exceed the Base Year
Amount shall be adjusted in the proportion that the number of days of that
calendar year during which the Lease is in effect bears to 365. Tenant's
obligations under this Article 5 for the payment of Operating Costs during the
Lease Term, including the payment of any deficiency following receipt of the
annual statement under Section 5.02, shall survive the expiration or termination
of this Lease.

         5.05 "Operating Costs" consist of all costs of operating, maintaining
and repairing the Project, including, without limitation, the following:

              (a) Premiums for property, casualty, liability, rent interruption
or other insurance.

              (b) Salaries, wages and other amounts paid or payable for
personnel including the Project manager, superintendent, operation and
maintenance staff, and other employees of Landlord involved in the maintenance
and operation of the Project, including contributions and premiums towards
fringe benefits, unemployment and worker's compensation insurance, pension plan
contributions and similar premiums and contributions and the total charges of
any independent contractors or managers engaged in the repair, care, maintenance
and cleaning of any portion of the Project.

              (c) Cleaning, including janitorial services, window cleaning, and
garbage and refuse removal.

              (d) Landscaping, including irrigating, trimming, mowing,
fertilizing, seeding, and replacing plants.

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              (e) Utilities, including fuel, gas, electricity, water, sewer,
telephone, and other services.

              (f) Subject to the provisions of Section 5.05(k) below,
maintaining, operating, repairing and replacing components of equipment,
including without limitation heating, refrigeration, ventilation, electrical,
plumbing, mechanical, elevator, escalator, security and energy management
systems.

              (g) Other items of repair or maintenance of the Project.

              (h) Policing, security and supervision, including rental and other
costs incurred in respect of the management office for the Project.

              (i) The cost of the rental of any equipment and the cost of
supplies used in the maintenance and operation of the Project.

              (j) Audit fees and the cost of accounting services incurred in the
preparation of statements referred to in this Lease and financial statements,
and in the computation of the rents and charges payable by tenants of the
Project.

              (k) Depreciation or amortization of (1) all maintenance and
cleaning equipment and master utility meters and all other fixtures, equipment
and facilities serving the Project which by their nature require periodic or
substantial repair or replacement, in accordance with sound accounting
principles, and (2) the costs of improvements, repairs, or replacements properly
charged to capital account amortized over their useful lives, as determined by
the Landlord in accordance with sound accounting principles.

              (l) A fee for the administration and management of the Project
appropriate to the first class nature of the Project as reasonably determined by
the Landlord from time to time.

              (m) General and special real and personal property taxes and
assessments for the Project.

          5.06 Notwithstanding anything to the contrary in Section 5.05,
"Operating Costs" shall not include:

              (a) Amounts reimbursed by other sources, such as insurance
proceeds, equipment warranties, judgments or settlements.

              (b) Utilities or other expenses paid directly by tenants to
suppliers or paid by tenants to Landlord for separately metered or special
services.

              (c) Ground rents.

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<PAGE>   8
              (d) Initial construction of the Project, including payments on any
mortgage or other encumbrance for the purpose of financing or refinancing the
initial construction or subsequent purchase of the Project.

              (e) Construction of tenant improvements.

              (f) Replacements (but not repairs) of structural elements.

              (g) Replacements of all or a substantial portion of the Building
electrical, plumbing or HVAC systems.

              (h) Leasing commissions.

              (i) Correction of defects in material or workmanship in the
initial construction of the Project.

              (j) General overhead and administrative expenses of Landlord not
directly related to the operation of the Project.

              (k) Costs of negotiating or enforcing leases of other tenants.

                                    ARTICLE 6

                                SECURITY DEPOSIT

         6.01 Upon execution of this Lease Tenant shall deposit with Landlord a
security deposit in the amount set forth in Section 1.10 to secure Tenant's
performance of this Lease. The deposit shall not bear interest, shall be
commingled with Landlord's other funds, and shall be returned, less any unpaid
claims against Tenant, upon the expiration of this Lease and the surrender of
possession of the Premises, to Tenant or the last assignee of Tenant's interest.

                                    ARTICLE 7

                                 USE OF PREMISES

         7.01 Tenant shall use the Premises for the purposes set forth in
Section 1.11 and for no other purpose. Tenant shall not use the Premises for
any purpose in violation of exclusive rights granted by Landlord from time to
time to any other Tenant; provided, however, that Landlord shall not grant any
exclusive right that would prevent Tenant from conducting its business as
described in Section 1.11.

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<PAGE>   9
         7.02 Tenant shall comply and shall cause its employees to comply with
all laws, ordinances, orders, and restrictions imposed by any federal, state or
local government or governmental body having jurisdiction, with the Rules and
Regulations attached to this Lease, and with such other or amended rules and
regulations as Landlord may from time to time reasonably establish by notice to
Tenant.

         7.03 Tenant shall not perform any act in the Building which would
increase any insurance premiums related to the Building or would cause the
cancellation of any insurance policies related to the Building.

         7.04 If solely due to Tenant's use of the Premises, improvements are
necessary to comply with any requirements imposed by law or with the
requirements of insurance carriers, Tenant shall pay the entire cost of the
improvements.

         7.05 Tenant shall not abandon or vacate the Premises at any time during
the Term.

         7.06 Tenant shall not cause or maintain any nuisance in or about the
Premises and shall keep the Premises free of debris, rodents, vermin and
anything of a dangerous, noxious or offensive nature or which would create a
fire hazard (through undue load on electrical circuits or otherwise) or undue
vibration, noise or heat. Tenant shall not cause the safe floor loading capacity
to be exceeded.

         7.07 Tenant shall not disturb or interfere with the quiet enjoyment of
the premises of any other tenant.

                                    ARTICLE 8

                                BUILDING SERVICES

         8.01 Landlord shall supply to the Premises:

              (a) Janitorial service five nights a week consisting of vacuuming
carpets as necessary, emptying wastepaper baskets, dusting and cleaning of
restrooms.

              (b) Heating, ventilation and air conditioning, between 7:00 a.m.
and 6:00 p.m. Monday through Friday, and between 8:00 a.m. to noon on Saturday,
sufficient for the comfortable use and enjoyment of the Premises.

              (c) Periodic window washing.

              (d) Electrical power for normal lighting and the operation of
small business office equipment.

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<PAGE>   10
         8.02 Landlord shall maintain the Building and all Common Areas in good
condition and repair in accordance with standards then prevailing for first
class office buildings of like age and character. Landlord shall keep all
building equipment such as elevators, plumbing, heating, air conditioning and
similar equipment in good repair, but Landlord shall not be liable or
responsible for breakdowns or temporary interruptions in service where
reasonable efforts are used to restore service, nor for interference with
Tenant's business or Tenant's access to the Premises during the course of
repairs or remedial work.

         8.03 By activation of the demand switch provided for that purpose,
Tenant may cause heating, air conditioning and ventilation to be provided to the
Premises outside of the business hours set forth in Section 8.01(c). Tenant
shall pay for the additional services at such hourly rates as Landlord may
establish from time to time. Landlord shall establish the rate to reflect
Landlord's good faith estimate of the cost of providing the additional services,
excluding profit but including costs of electrical power and wear and tear on
equipment. Charges for additional services shall be paid upon receipt of an
invoice, which normally will be sent on a monthly basis.

         8.04 Tenant shall not employ equipment which consumes more electrical
power than does normal small business office equipment or which generates heat
in a quantity sufficient to materially affect the demand on air conditioning.
Consent for any such equipment may be requested in connection with the approval
of the plans and specifications for the initial tenant improvements. Landlord
shall be entitled to require, as a condition to its consent, that: (i)
electrical power supplied to the Premises or to the items of equipment involved
be separately metered, in which case Tenant shall upon receipt of monthly
invoices reimburse Landlord for the cost of the electrical power as measured by
the meter, or (ii) supplemental cooling equipment be purchased, installed and
operated at Tenant's expense, or (iii) both of the foregoing.

         8.05 Landlord shall at all times have access to the Premises for
purposes of inspection and performing Landlord's obligations and exercising its
rights under this Lease.

                                    ARTICLE 9

                                      TAXES

         9.01 Landlord shall pay before delinquent all general and special real
property taxes assessed or levied on the Project, subject to reimbursement under
Article 5.

         9.02 Tenant shall pay before delinquent all taxes levied or assessed
upon, measured by, or arising from: (a) the conduct of Tenant's business; (b)
Tenant's leasehold estate; or (c) Tenant's property.

                                       8
<PAGE>   11
                                   ARTICLE 10

                        CONSTRUCTION, TENANT MAINTENANCE
                                 AND ALTERATIONS

         10.01 On or before the date set forth in Section 1.09, Tenant shall
cause to be delivered to Landlord reasonably detailed space plans, prepared by
an architect, showing the nature and location of the improvements to be
constructed in the Premises. Tenant also shall deliver with the space plan any
specifications or other information relating to special requirements. Tenant's
space plan shall take into account the loading capacity of the Building. Tenant
shall cause its architect, if any, to meet with Landlord's architect to develop
any information needed for space planning purposes.

         10.02 The space plan, specifications and special requirements shall be
subject to Landlord's approval and shall be modified to satisfy any reasonable
objections raised by Landlord.

         10.03 Based upon the final space plan, specifications and special
requirements, Landlord shall cause working drawings to be prepared for all
improvements to be constructed in the Premises. The working drawings shall be
subject to Tenant's reasonable approval and shall be modified to satisfy any
reasonable objection of Tenant.

         10.04 During the entire course of the process described above, both
Landlord and Tenant shall review and respond to submissions by the other party
with reasonable dispatch. From time to time at the request of either party
Landlord and Tenant shall devise, and revise as necessary working schedules for
the preparation of the plans and the construction of the improvements.

         10.05 Landlord shall cause the improvements as set forth in the final
working drawings to be constructed.

         10.06 All costs of construction of the tenant improvements in excess of
the Tenant Improvement Allowance as set forth in Section 1.08, as estimated by
Landlord, shall be paid by Tenant to Landlord upon commencement of construction.
Any difference between actual and estimated costs shall be paid or refunded, as
the case may be, upon completion of construction and punchlist items. Costs of
construction of the tenant improvements shall not include costs of constructing
the Building Shell as defined in Exhibit C, but shall include architects' fees
incurred by Landlord for preparation of drawings except that Tenant shall bear
the cost of changes requested by Tenant after final working drawings were
completed and approved.

         10.07 Within ten days after taking possession of the premises, Tenant
shall deliver to Landlord a written punchlist specifying all defects in
materials or workmanship in the tenant improvements. Any defects not specified
in the punchlist, except latent defects not readily discoverable by inspection,
are waived. Landlord shall promptly cause all matters appearing on the punchlist
to be corrected.

                                       9
<PAGE>   12
         10.08 Except to the extent that Landlord is specifically responsible
therefor under this Lease, Tenant shall maintain the Premises and all
improvements therein in good order and condition, including:

              (a) repainting and redecorating the Premises and cleaning drapes
or other exterior window coverings and carpets at reasonable intervals as needed
but not less frequently than every five years;

              (b) making repairs, replacements and alterations as needed,
including those necessary to comply with the requirements of any governmental or
quasi-governmental authority having jurisdiction, in accordance with Section
10.09;

         10.09 Tenant may from time to time at its own expense make changes,
additions and improvements in the Premises, provided that any such change,
addition or improvement shall:

              (a) comply with the requirements of any government or quasi
-governmental authority having jurisdiction and with the requirements of
Landlord's insurance carriers;

              (b) be made only with the prior written consent of Landlord (which
may be withheld in Landlord's sole discretion, to the extent it relates in
Landlord's opinion to the structure or electrical, HVAC, plumbing and sprinkler
systems of the Building, but which otherwise shall not be unreasonably
withheld);

              (c) conform to complete working drawings submitted to and approved
by Landlord in conjunction with Landlord's consent;

              (d) equal or exceed the then current standard for the Building;
and

              (e) be carried out only by persons selected by Tenant and
approved in writing by Landlord, who shall deliver to Landlord before
commencement of the work performance and payment bonds as well as proof of
worker's compensation and public liability and property damage insurance
coverage, with Landlord named as an additional insured, in amounts, with
companies, and in form reasonably satisfactory to Landlord, which shall remain
in effect during the entire period in which the work will be carried out.

         10.10 Tenant may install in the Premises its usual trade fixtures and
personal property in a proper manner, provided that no installation shall
interfere with or damage the mechanical or electrical systems or the structure
of the Building. Landlord may require that any work that may affect structural
elements or mechanical, electrical, heating, air conditioning, plumbing or other
systems be performed by Landlord at Tenant's cost or by a contractor designated
by Landlord.

         10.11 Tenant shall pay before delinquency all costs for work done or
caused to be done by Tenant in the Premises which could result in any lien or
encumbrance on Landlord's interest in

                                       10
<PAGE>   13
the Project or any part thereof, shall keep the title to the Project and every
part thereof free and clear of any lien or encumbrance in respect of Such work,
and shall indemnify and hold harmless Landlord against any claim, loss, cost,
demand and legal or other expense, whether in respect of any lien or otherwise,
arising out of the supply of material, services or labor for such work. Tenant
shall immediately notify Landlord of any such lien, claim of lien or other
action of which it has or reasonably should have knowledge and which affects the
title to the Project or any part thereof, and shall cause the same to be removed
by bonding or otherwise within five days, failing which Landlord may take such
action as Landlord deems necessary to remove same and the entire cost thereof
shall be immediately due and payable by Tenant to Landlord.

                                   ARTICLE 11

                                FIRE AND CASUALTY

         11.01 If all or part of the Premises is rendered untenantable by damage
from fire or other casualty which in Landlord's opinion can be substantially
repaired (employing normal construction methods without overtime or other
premium) under applicable laws and governmental regulations within 180 days from
the date on which Landlord receives the insurance proceeds relating to such
casualty, Landlord shall, but only to the extent that insurance proceeds are
available therefor, repair such damage other than damage to improvements,
furniture, chattels or trade fixtures which do not belong to Landlord, which
shall be repaired forthwith by Tenant at its own expense.

         11.02 If all or part of the Premises is rendered untenantable by damage
from fire or other casualty which in Landlord's opinion cannot be substantially
repaired (employing normal construction methods without overtime or other
premium) under applicable laws and governmental regulations within 180 days from
the date on which Landlord receives the insurance proceeds relating to such
casualty, then either Landlord or Tenant may elect to terminate this Lease as of
the date of such casualty by written notice delivered to the other not more than
ten days after such determination by Landlord. If neither party exercises its
right to terminate, Landlord shall, but only to the extent that insurance
proceeds are available therefor, repair such damage other than damage to
improvements, furniture, chattels or trade fixtures which do not belong to the
Landlord, which shall be repaired forthwith by Tenant at its own expense.

         11.03 If Landlord is required to repair damage to all or part of the
Premises under Section 11.01 or 11.02, the Base Rent payable by Tenant shall be
proportionately reduced to the extent that the Premises are thereby rendered
untenantable from the date of such casualty until five days after completion by
Landlord of the repairs to the Premises (or the part thereof rendered
untenantable) or until Tenant again uses the Premises (or the part thereof
rendered untenantable in its business, whichever first occurs.

         11.04 Notwithstanding anything to the contrary in Section 11.01, if all
or a substantial part (whether or not including the Premises) of the Building is
rendered untenantable by damage from

                                       11
<PAGE>   14
fire or other casualty to such a material extent that in the reasonable opinion
of Landlord the Building must be totally or partially demolished, whether or not
to be reconstructed in whole or in part, Landlord may elect to terminate this
Lease as of the date of such casualty (or on the date of notice if the Premises
are unaffected by such casualty) by written notice delivered to Tenant not more
than sixty days after the date of such casualty.

         11.05 Except as specifically provided in this Article 11, there shall
be no reduction of rent and Landlord shall have no liability to Tenant by reason
of any injury to or interference with Tenant's business or property arising from
fire or other casualty, howsoever caused, or from the making of any repairs
resulting therefrom in or to any portion of the Building or the Premises. Tenant
waives any statutory or other rights of termination by reason of fire or other
casualty, it being the intention of the parties to provide specifically in this
Article 11 for all circumstances under which rights of termination shall exist.

                                   ARTICLE 12

                        TENANT'S INSURANCE AND INDEMNITY

         12.01 Tenant shall, at its expense, take out and keep in full force and
effect and in the names of Tenant, Landlord and any holders of encumbrances on
the Project designated by Landlord, as their respective interests may appear,
the following insurance:

              (a) Fire and standard extended coverage insurance including
sprinkler leakage in an amount equal to the full replacement cost of all
property owned by Tenant, or for which the Tenant is responsible, including,
without limitation, all of the tenant improvements constructed by Landlord under
Article 10 or otherwise constructed by or on behalf of Tenant.

              (b) Business interruption insurance in such amount as will
reimburse Tenant for direct or indirect loss of earnings attributable to all
perils insured against in Section 12.01 (a) and other perils commonly insured
against by prudent tenants or attributable to prevention of access to the
Premises as a result of such perils.

              (c) Public liability and property damage insurance, including
personal injury liability, contractual liability, employers' liability,
non-owned automobile liability and owners' and contractors' protective insurance
coverage, coverage to include the activities and operations of Tenant and any
other person on the Premises or performing work on behalf of Tenant. Such
policies shall: (i) be written on a comprehensive basis with inclusive limits of
not less than $5,000,000 for bodily injury to any one or more persons, or
property damage, and such higher limits as the Landlord, acting reasonably,
requires from time to time; and (ii) contain a severability of interests clause
and a cross-liability clause.

                                       12
<PAGE>   15
         12.02 Tenant's insurance policies shall:

              (a) where applicable, contain the mortgagee's standard mortgage
clause and in any event a waiver of any subrogation rights which Tenant's
insurers may have against Landlord and against those for whom the Landlord is in
law responsible;

              (b) be taken out with insurers reasonably acceptable to Landlord
and be in a form satisfactory from time to time to Landlord;

              (c) be non-contributing and apply only as primary and not as
excess to, any other insurance available to the Landlord;

              (d) not be invalidated with respect to the interests of the
Landlord and the holder of any encumbrance on the Project by reason of any
breach or violation by Tenant of any warranties, representations, declarations
or conditions contained in the policies;

              (e) contain an undertaking by the insurers to notify the Landlord,
and the holder of any encumbrance on the Project designated by Landlord, in
writing not less than thirty days prior to any material change, cancellation or
termination.

         12.03 Tenant shall deliver to Landlord certificates of insurance or, if
required by Landlord, certified copies of each such insurance policy: (a) as
soon as practicable after the placing of the required insurance, and (b)
periodically thereafter before expiration, renewal or replacement of the
policies then in force. No review or approval of any such insurance certificate
by Landlord shall derogate or diminish Landlord's rights or Tenant's
obligations. Tenant shall not take possession of the Premises without having
complied with the requirements for this section.

         12.04 If there is damage or destruction to the tenant improvements,
Tenant shall use the proceeds of its insurance for the purpose of repairing or
restoring the tenant improvements. In the event of the termination of this Lease
under Article 11, Tenant shall assign and pay over to Landlord all of its
insurance proceeds relating to the tenant improvements constructed by Landlord
or by or on behalf of Tenant. The term "tenant improvements" does not include
furniture, furnishings, office equipment or other movable personal property not
affixed to or incorporated into the Premises.

         12.05 Tenant shall defend, indemnify and hold Landlord harmless,
regardless of any negligence imputed to Landlord as owner of the real property
involved in an injury, from and against any and all loss, claims, actions,
damages, liability and expense in connection with loss of life, personal injury,
damage to property or any other loss or injury whatsoever arising directly or
indirectly from or out of this Lease, or any occurrence in, upon or at the
Premises, or the occupancy or use by the Tenant of the Premises, or any act or
omission of Tenant, its agents, servants, employees or invitees. Tenant shall
not be required, however, to indemnify Landlord against a claim arising from
Landlord's active negligence or willful misconduct.

                                       13
<PAGE>   16
                                   ARTICLE 13

                              LANDLORD'S INSURANCE

          13.01 The Landlord will at all times throughout the Term carry: (a)
insurance on the Building (excluding the foundations and excavations) and the
machinery, equipment and Building systems (but excluding any property with
respect to which the Tenant and other tenants are obliged to insure pursuant to
Article 12 or similar articles of their respective leases) against damage by
fire and extended perils coverage in such reasonable amounts and with such
reasonable deductions as would be carried by a prudent owner of a reasonably
similar office building, having regard to size, age and location; (b) public
liability and property damage insurance in such reasonable amounts and with such
reasonable deductions as would be carried by a prudent owner of a reasonably
similar office building, having regard to size, age and location; and (c) such
other insurance as Landlord reasonably considers advisable. No insurable
interest is conferred upon Tenant under any policies of insurance carried by
Landlord, and Tenant shall not be entitled to share or receive proceeds of any
insurance policy carried by Landlord.

                                   ARTICLE 14

                            ASSIGNMENT AND SUBLETTING

          14.01 Tenant shall not assign its interest under this Lease or sublet
all or any part of the Premises without Landlord's prior written consent, which
shall not be unreasonably withheld. Tenant shall not at any time pledge,
hypothecate, mortgage or otherwise encumber its interest under this Lease as
security for the payment of a debt or the performance of a contract. Tenant
shall not permit its interest under this Lease to be transferred by operation of
law.

          14.02 Landlord shall be under no obligation to decide whether consent
will be given or withheld unless Tenant has first provided to Landlord: (a) the
name and legal composition of the proposed assignee or subtenant and the nature
of its business; (b) the use to which the proposed assignee or subtenant intends
to put the Premises; (c) the terms and conditions of the proposed assignment or
sublease and of any related transaction between Tenant and the proposed assignee
or subtenant; (d) information related to the experience, integrity and financial
resources of the proposed assignee or subtenant; (e) such information as
Landlord may request to supplement, explain or provide details of the matters
submitted by Tenant pursuant to subparagraphs (a) through (d); and (f)
reimbursement for all costs incurred by Landlord, including attorneys' fees, in
connection with evaluating the request and preparing any related documentation.

         14.03 Tenant shall remain fully liable for performance of this Lease,
notwithstanding any assignment or sublease, for the entire Lease Term.

                                       14

<PAGE>   17
         14.04 Landlord, at its option, may elect, no later than ten days after
Tenant has provided all necessary information, to give notice of cancellation of
this Lease with respect to the space affected by a proposed assignment or
sublease. Tenant, by giving notice of withdrawal of its request for consent to a
proposed assignment or sublease within ten days after Landlord's notice, may
cause Landlord's notice to be automatically rescinded. If the notice of
cancellation is not rescinded, it shall be effective thirty days after it was
given. A cancellation relating to the entire Premises shall relieve Tenant of
all obligation under this Lease except obligations accruing prior to the date
possession is surrendered to Landlord and obligations related to the condition
in which the Premises are to be surrendered. Upon a cancellation relating to a
portion of the Premises, Tenant's rental obligations shall be reduced, as of the
effective date of the cancellation, in the proportion that the area of the
Premises has been reduced.

         14.05 Landlord also shall have the option, in the case of a proposed
sublease, to sublease the affected space from Tenant on the same terms and
conditions as are being offered by the proposed subtenant. This option shall be
exercised, if at all, no later than ten days after Tenant has provided all of
the information required by Section 14.01.

         14.06 If consent to an assignment or sublease is given, Tenant shall
pay to Landlord, as additional rent, one half of all amounts received from the
assignee or subtenant in excess of the amounts otherwise payable by Tenant to
Landlord with respect to the space involved, measured on a per square foot
basis.

         14.07 It shall not be unreasonable for Landlord to withhold consent if
the proposed assignee or subtenant is a tenant in another building in the
Phoenix Metropolitan Area owned by Landlord or by an affiliate of Landlord or of
any of Landlord's constituent partners or principals or If the use by the
proposed assignee or subtenant would contravene this Lease or any restrictive
use covenant or exclusive rights granted by Landlord or if the proposed assignee
or subtenant does not intend to occupy the Premises for its own use.

         14.08 No consent shall constitute consent to any further assignment or
subletting.

         14.09 Upon a sale or other transfer of the Building by Landlord,
Landlord's interest in this Lease shall automatically be transferred to the
transferee, the transferee shall automatically assume all of Landlord's
obligations under this Lease, and the transferor shall be released of all
obligations under this Lease arising after the transfer. Tenant shall upon
request attorn in writing to the transferee.

                                       15
<PAGE>   18
                                   ARTICLE 15

                          SUBORDINATION AND ATTORNMENT

         15.01 This Lease is and shall be subject and subordinate in all
respects to all existing and future mortgages or deeds of trust now or hereafter
encumbering the Project or any part hereof; provided, however, that with respect
to any mortgage or deed of trust that is a second or more inferior lien, the
subordination of this Lease shall be effective only it the mortgage or deed of
trust, or a separate instrument signed by the holder of the mortgage or deed of
trust, provides that Tenant's possession of the Premises shall not be disturbed
upon any foreclosure of the mortgage or deed of trust so long as Tenant is not
in default under this Lease. The holder of any mortgage or deed of trust may
elect to be subordinate to this Lease.

         15.02 Upon a transfer in connection with foreclosure or trustee's sale
proceedings or in connection with a default under an encumbrance, whether by
deed to the holder of the encumbrance in lieu of foreclosure or otherwise, the
transferee shall not be:

                  (a) subject to any offsets or defenses which Tenant might have
against Landlord; or

                  (b) bound by any prepayment by Tenant of more than one month's
installment of rent; or

                  (c) subject to any liability or obligation of Landlord except
those arising after the transfer.

         15.03 The subordination provisions of this Article 15 shall be
self-operating and no further instrument shall be necessary. Nevertheless
Tenant, on request, shall execute and deliver any and all instruments further
evidencing such subordination.

         15.04 Landlord may at any time and from time to time grant, receive,
dedicate, relocate, modify, surrender or otherwise deal with easements, rights
of way, restrictions, covenants, equitable servitudes or other matters affecting
the Project without notice to or consent by Tenant.

                                   ARTICLE 16

                              ESTOPPEL CERTIFICATES

         16.01 Tenant shall at any time within ten days after written request
from Landlord execute, acknowledge and deliver to Landlord a statement in
writing: (a) certifying that this Lease is unmodified and in full force and
effect (or, if modified, stating the nature of such modification and certifying
that this Lease, as so modified, is in full force and effect) and the date to
which the rent

                                       16
<PAGE>   19
and other charges are paid in advance, if any, (b) confirming the commencement
and expiration dates of the term, (c) confirming the amount of the security
deposit held by Landlord, (d) acknowledging that there are not, to Tenant's
knowledge, any uncured defaults on the part of Landlord hereunder, or specifying
such defaults if any are claimed, and (e) confirming such other matters as to
which Landlord my reasonably request confirmation. Any such statement may be
conclusively relied upon by a prospective purchaser or encumbrancer of the
Premises or the Project. Tenant's failure to deliver such statement within such
time shall be conclusive upon Tenant (i) that this Lease is in full force and
effect, without modification except as may be represented by Landlord; (ii) that
there are no uncured defaults in Landlord's performance; (iii) that not more
than one month's rent has been paid in advance, (iv) that the commencement and
expiration dates and the amount of the security deposit are as stated by
Landlord, and (v) that those matters as to which Landlord requested confirmation
are true. If Landlord desires to finance or refinance the Building, Tenant
hereby agrees to deliver to any lender designated by Landlord such financial
statements of Tenant as may be reasonably required by such lender. Such
statement shall include the past three years' financial statements of Tenant.
All such financial statements shall be received by Landlord in confidence and
shall be used only for the purposes herein set forth.

                                   ARTICLE 17

                                  CONDEMNATION

         17.01 If during the Term all or any part of the Premises is permanently
taken for any public or quasi-public use under any statute or by right of
eminent domain, or purchased under threat of such taking, this Lease shall
automatically terminate on the date on which the condemning authority takes
possession of the Premises.

         17.02 If during the term any part of the Project is taken or purchased
by right of eminent domain or in lieu of condemnation, whether or not the
Premises are directly affected, then if in the reasonable opinion of Landlord
substantial alteration or reconstruction of the Building is necessary or
desirable as a result thereof, or the amount of parking available to the Project
is materially and adversely affected, Landlord shall have the right to terminate
this Lease by giving Tenant at least thirty days written notice of such
termination.

         17.03 Landlord shall be entitled to receive and retain the entire award
or consideration for the affected lands and improvements and Tenant shall not
have or advance any claims against Landlord for the value of its property or its
leasehold estate or the unexpired term of this Lease or for costs of removal or
relocation or business interruption expense or any other damages arising out of
the taking or purchase. Nothing herein shall give Landlord any interest in or
preclude Tenant from seeking and recovering on its own account from the
condemning authority any award of compensation attributable to the taking or
purchase of Tenant's chattels or trade fixtures or attributable to Tenant's
relocation expenses provided that any such separate claim by Tenant shall not
reduce or adversely affect the amount of Landlord's award. If any such award
made or

                                       17
<PAGE>   20
compensation paid to Tenant specifically includes an award or amount for
Landlord, Tenant shall promptly account therefor to Landlord.

                                   ARTICLE 18

                                      SIGNS

         18.01 Tenant shall not place or permit to be placed any sign, picture,
advertisement, notice, lettering or decoration on any part of the outside of the
Building or the Premises or anywhere in the interior of the Premises which is
visible from the outside of the Building or the Premises. Identification signs
to be placed on the outside of the doors leading into the Premises shall conform
to Landlord's sign criteria and are subject to Landlord's prior written
approval. Landlord shall bear the cost of the sign up to the cost of a building
standard sign.

         18.02 Tenant will be entitled to have its name shown on the directory
board of the Building. Landlord will design the style of such identification.
Landlord shall bear the cost of the first directory entry and Tenant shall bear
the cost of any other directory entries desired by Tenant and permitted under
the uniform directory policy.

                                   ARTICLE 19

                          BREACH, DEFAULT, AND REMEDIES

         19.01 The following shall constitute events of default:

                  (a) Tenant's failure to pay rent or any other amount due under
this Lease within five days after notice of nonpayment.

                  (b) Tenant's failure to execute, acknowledge and return an
estoppel certificate under Article 16, within ten days after request.

                  (c) Tenant's failure to perform any other obligation under
this Lease within fifteen days after notice of nonperformance; provided,
however, that if the breach is of such a nature that it cannot be cured within
fifteen days, Tenant shall be deemed to have cured if cure is commenced promptly
and diligently pursued to completion; and provided further, that in the event of
a breach involving an imminent threat to health or safety, Landlord may in its
notice of breach reduce the period for cure to such shorter period as may be
reasonable under the circumstances.

                  (d) Tenant vacates, abandons, or otherwise ceases to use the
Premises on a substantial continuing basis except temporary absence excused by
reason of fire, casualty, failure of Building services or other cause wholly
beyond Tenant's control.

                                       18
<PAGE>   21
                           (e) Any goods, chattels or equipment of Tenant is
taken in execution or in attachment or if a writ of execution is issued against
Tenant or Tenant or any guarantor becomes insolvent or commits an act of
bankruptcy or becomes bankrupt or takes the benefit of any statute that may be
in force for bankrupt or insolvent debtors or becomes involved in voluntary or
involuntary winding-up proceedings or if a receiver shall be appointed for the
business, property, affairs or revenues of Tenant or any guarantor (provided,
however, that in the case of involuntary proceedings, Tenant shall have 60 days
to cause them to be dismissed), or Tenant makes a bulk sale of its goods or
moves or commences, attempts or threatens to move its goods, chattels and
equipment out of the Premises other than in the normal course of its business.

         19.02 Upon the occurrence of any event of default, Landlord, at any
time thereafter without further notice or demand may exercise any one or more of
the following remedies concurrently or in succession:

                           (a) Terminate Tenant's right to possession of the
Premises by legal process or otherwise, with or without terminating this Lease,
and retake exclusive possession of the Premises.

                           (b) From time to time relet all or portions of the
Premises, using reasonable efforts to mitigate Landlord's damages, in connection
with any reletting, Landlord may relet for a period extending beyond the term of
this Lease and may make alterations or improvements to the Premises without
releasing Tenant of any liability. Upon a reletting of all or substantially all
of the Premises, Landlord shall be entitled to recover all of its then
prospective damages for the balance of the Lease Term measured by the difference
between amounts payable under this Lease and the anticipated net proceeds of
reletting. In no event shall Tenant be entitled to receive any amount
representing the excess of avails of reletting over amounts payable hereunder.

                           (c) From time to time recover accrued and unpaid rent
and damages arising from Tenant's breach of the Lease, regardless of whether the
Lease has been terminated together with applicable late charges and interest at
the rate of 18% per annum or the highest lawful rate, whichever is less.

                           (d) Enforce the statutory Landlord's lien on Tenant's
property.

                           (e) Recover all attorneys' fees incurred by Landlord
in connection with enforcing this Lease, recovering possession and collecting
amounts owed.

                           (f) Perform the obligation on Tenant's behalf and
recover from Tenant, upon demand, the entire amount expended by Landlord plus
20% for special handling, supervision, and overhead.

                           (g) Pursue other remedies available at law or in
equity.

                                       19
<PAGE>   22
         19.03 Upon a termination of Tenant's right to possession, whether or
not this Lease is terminated, subtenancies and other rights of persons claiming
under or through Tenant: (a) shall be terminated, or (b) Tenant's Interest shall
be assigned to Landlord. Landlord may separately elect termination or assignment
with respect to each such subtenancy or other matter.

                                   ARTICLE 20

                                     NOTICES

         20.01 Any notice from one party to the other shall be in writing and
shall be deemed duly served if delivered personally to a responsible employee of
the party being served, or if mailed by registered or certified mail addressed
to Tenant at the Premises or to Landlord at the place from time to time
established for the payment of rent with a copy to:

                              Nationwide Life Insurance Company
                              Real Estate Investment Department
                              One Nationwide Plaza
                              Suite 33T
                              Columbus, Ohio 43218

                              Attn: Vice President, Real Estate Investments

Any notice to Tenant prior to Tenant's taking possession of the Premises,
however, shall instead be sent to the address set forth in Section 1.07. Any
notice shall be deemed to have been given when mailed, if mailed, and when
delivered, if personally delivered.

                                   ARTICLE 21

                             SURRENDER AND HOLDOVER

         21.01 Upon the expiration or termination of this Lease or of Tenant's
right to possession, Tenant shall surrender the Premises in a clean undamaged
condition and shall, unless forbidden by Landlord, remove all of Tenant's
equipment, fixtures and property and repair all damage caused by the removal.
Tenant shall not remove permanent improvements which were provided by Landlord
at the commencement of this Lease and shall not remove permanent improvements
later installed by Tenant unless directed to do so by Landlord.

         21.02 If Tenant holds over without Landlord's consent, Tenant shall, at
Landlord's election, be a tenant at will or a tenant from month-to-month. In
either case rent shall be payable monthly in advance at a rate equal to twice
the rate in effect immediately before the holdover began. A holdover
month-to-month tenancy may be terminated by either party as of the first day of
a calendar month upon at least ten days prior notice. A holdover tenancy at will
is terminable at any

                                       20
<PAGE>   23
time by either party without notice, regardless of whether rent has been paid in
advance. Upon a termination under this Section 21.02, unearned rent shall be
refunded following the surrender of possession provided Tenant is not otherwise
in breach of this Lease.

                                   ARTICLE 22

                                   RELOCATION

         22.01 Landlord, upon at least sixty days prior notice to Tenant, may
require Tenant to relocate to other premises of substantially equal size in the
Building which shall, upon delivery, be substituted for the Premises under this
Lease. The amount of the Base Rent and Tenant's share of Operating Costs shall
be adjusted based upon the rentable area of the substitute Premises. Landlord,
at Landlord's expense, shall cause the substitute Premises to be improved prior
to delivery in a manner similar to the original Premises. Upon request Tenant
shall cooperate in the preparation or approval of plans and specifications for
the improvements. Landlord shall bear all reasonable out-of-costs incurred in
connection with the relocation for changes in signs, changes in stationery,
reinstallation of telephone equipment, moving of furniture and personal
property, and similar matters.

                                   ARTICLE 23

                                     GENERAL

         23.01 If any term, covenant or condition of this Lease, or the
application thereof is to any extent held or rendered invalid, it shall be and
is hereby deemed to be independent of the remainder of the Lease and to be
severable and divisible therefrom, and its invalidity, unenforceability or
illegality does not affect, impair or invalidate the remainder of the Lease or
any part thereof.

         23.02 If Tenant pays the rent and observes and performs the terms,
covenants and conditions contained in this Lease, Tenant will peaceably and
quietly hold and enjoy the Premises for the Term without hindrance or
interruption by Landlord, or any other person lawfully claiming by, through or
under Landlord unless otherwise permitted by the terms of this Lease. Tenant
acknowledges that the exercise by the Landlord of any of the rights conferred on
Landlord under this Lease and the entry upon the Premises for or in connection
with such purposes will not be deemed to be a constructive or actual eviction of
the Tenant and will not be considered to be a breach of Landlord's covenant of
quiet enjoyment.

         23.03 The waiver by Landlord of any breach of any term, covenant or
condition contained in this Lease is not deemed to be a waiver of such term,
covenant or condition or of any subsequent breach of the same or of any other
term, covenant or Condition contained in the Lease. The subsequent acceptance of
rent by Landlord is not deemed to be a waiver of any preceding breach by

                                       21
<PAGE>   24
Tenant of any term, covenant or condition of this Lease, regardless of
Landlord's knowledge of such preceding breach at the time of acceptance of rent.
No term, covenant or condition of this Lease is deemed to have been waived by
Landlord unless such waiver is in writing by Landlord.

         23.04 No payment by Tenant or receipt by the Landlord of a lesser
amount than the monthly payment of rent herein stipulated is deemed to be other
than on account of the earliest stipulated rent, nor is any endorsement or
statement on any check or any letter accompanying any check or payment of rent
deemed an acknowledgment of full payment or accord and satisfaction, and
Landlord may accept and cash any check or payment without prejudice to
Landlord's right to recover the balance of the rent due and pursue any other
remedy provided in this Lease.

         23.05 If either party is bona fide delayed or hindered in or prevented
from the performance of any term, covenant or act required hereunder by reasons
of strikes, labor troubles, inability to procure materials or services, power
failure, restrictive governmental laws or regulations, riots, insurrection,
sabotage, rebellion, war, act of God, or other reason whether of a like nature
or not which is beyond the control of the party affected, financial inability
excepted, then the performance of that term, covenant or act is excused for the
period of the delay and the party delayed will be entitled to perform such term,
covenant or act within the appropriate time period after the expiration of the
period of such delay. Nothing in this Section, however, shall excuse Tenant from
the prompt payment of any amount payable under this Lease.

         23.06 In the event of a material default by Landlord of a sufficiently
serious nature that Tenant considers the utility of the Premises to Tenant to be
significantly impaired, Tenant shall give written notice of the default to
Landlord and shall simultaneously send a copy of the notice to the holder of any
encumbrance, the name and address of whom has previously been furnished in
writing to Tenant, if Landlord fails to cure the default within a reasonable
time, Tenant shall send a second notice to that effect to the holder of the
encumbrance, with a copy to Landlord, and the holder of the encumbrance then
shall have a reasonable time, not less than thirty days, to cause the default to
be remedied.

         23.07 The submission of this Lease for examination does not constitute
a reservation of an option to lease the Premises, and this Lease becomes
effective as a lease only upon its execution and delivery by Landlord and
Tenant.

         23.08 All rights and liabilities under this Lease extend to and bind
the successors and assigns of Landlord and permitted successors and assigns of
Tenant. No rights, however, will inure to the benefit of any transferee of the
Tenant unless the transfer has been consented to by the Landlord in writing as
provided in Section 14.01. If there is more than one Tenant, they are all bound
jointly and severally by the terms, covenants and conditions of this Lease.

         23.09 This Lease and the Exhibits hereto attached, together with the
rules, set forth all the covenants, promises, agreements, conditions and
understandings between Landlord and Tenant concerning the Premises and there are
no other covenants, promises, agreements, conditions or

                                       22
<PAGE>   25
understandings, either oral or written, between them. No alteration, amendment
or addition to this Lease will be binding upon Landlord or Tenant unless in
writing and signed by Tenant and Landlord.

         23.10 This Lease to be construed in accordance with and governed by the
laws of the State of Arizona.

         23.11 Time is of the essence of this Lease and of every part hereof.

         23.12 Tenant shall not generate, store, handle, release, discharge, or
otherwise deal with any Hazardous Substance (as hereafter defined) in the
Premises or the Building.

                  Tenant shall protect, defend, indemnify and hold Landlord, its
officers, directors, agents and employees, harmless from and against any and all
obligations, liabilities, costs, damages, claims or expenses of any nature
arising from, or in connection with, any violation of this Section by Tenant,
its agents, employees or contractors.

                  Tenant further agrees, at its sole cost and expense, to
promptly perform any and all necessary remedial action requested by either
Landlord or any governmental agency in response to the presence, storage, use,
disposal, transportation or discharge of any Hazardous Substance in the Premises
or the Building caused, directly or indirectly, by Tenant, its agents, employees
or contractors.

                  For purpose of this Section:

                  A. "Hazardous Substance" means any chemical, pollutant,
         contaminant, waste (including without limitation, toxic, hazardous,
         infectious, sanitary, solid, radioactive material, oil or petroleum
         product, asbestos containing material, or material containing
         polychlorinated biphenyls, as such terms, or any similar terms, are at
         any time used under any applicable federal, state, local and foreign
         laws, regulations, rules, ordinances, permits, administrative orders,
         judicial, decision or the like (collectively "Laws") relating to
         pollution or protection of the environment, natural resources or human
         health.

                  B. "Environmental Laws" means any and all Laws relating to
         (1) pollution or protection of the environment, natural resources or
         human health from any Hazardous Substance or (2) nuisance, 'trespass or
         toxic tort, including, without limitation, Laws relating to emissions,
         discharges, releases or threatened releases of any Hazardous Substance
         or otherwise relating to the manufacture, processing, distribution,
         use, generation, treatment, storage, disposal, transportation or
         handling or any Hazardous Substance. Environmental Laws shall also
         include, but are not limited to, the Clean Air Act, the Federal Water
         Pollution Control Act, as amended by the Clean Water Act of 1977, the
         Safe Drinking Water Act, the Occupational Safety and Health Act of 1970
         ("OSHA"), the Comprehensive Environmental Response, Compensation and
         Liability Act of 1980 ("CERCLA"), the Superfund amendments and
         Reauthorization Act of 1986 ("SRA"), the Solid Waste Disposal Act as

                                       23
<PAGE>   26
amended by the Resource Conservation and Recovery Act of 1976 ("RCRA"), the
Hazardous and Solid Waste Amendments of 1984, the Medical Waste Tracking Act,
the Hazardous Materials Transportation Act, and the Toxic Substances Control Act
of 1976 ("TSCA").

         IN WITNESS WHEREOF, the parties have hereunto set their hands, or
caused this Lease to be executed by their authorized agents.

<TABLE>
<CAPTION>
TENANT:                                   LANDLORD:

<S>                                       <C>
IPNI Communications Corporation,          NATIONWIDE REALTY INVESTORS
a Delaware corporation                    LTD., an Ohio limited liability company
                                          which is qualified to do business in Arizona as
                                          Nationwide Realty Investors, L.L.C.

By:                                       By:
   ------------------------------            --------------------------------------------
       Peter J. Moriarty                         Brian J. Ellis
       Chairman & CEO                            President
                                                 Chief Operating Officer

Date:                                     Date:
   ------------------------------            --------------------------------------------
</TABLE>

                                       24

<PAGE>   27
                                   EXHIBIT "B"
                                  [INSERT MAP]

                                       25
<PAGE>   28
                     ADDENDUM TO LEASE FOR PARKING PURPOSES

          This Addendum is made between NATIONWIDE REALTY INVESTORS, LTD., an
Ohio limited liability company which is qualified to do business in Arizona as
Nationwide Realty Investors, L.L.C. ("Landlord") and IPNI Communications
Corporation, a Delaware corporation ("Tenant"), and modifies and supplements
that lease agreement (the "Lease") between Landlord and Tenant dated      ,1999.

         1. Tenant shall be entitled to lease up to six (6) covered reserved
parking space and up to twenty-six (26) covered unreserved parking spaces.
Tenant shall pay Landlord rental for the parking spaces in the amount of $35.00
per covered reserved space per month and $25.00 per covered unreserved space per
month, without deduction, offset, notice or demand, in advance on the first day
of each calendar month. However, beginning June 1, 2001 Tenant shall pay
Landlord rental for the parking spaces in the amount of $40.00 per covered
reserved space per month and $30.00 per covered unreserved space per month,
without deduction, offset, notice or demand, in advance on the first day of each
calendar month. The number and type of spaces leased shall be designated by
Tenant on or before the first day of the lease term.

         2. Rental rates on all spaces leased shall be adjusted from time to
time, after the expiration of the initial 60 months of the lease term, to the
prevailing rates being charged by Landlord for parking facilities.

         3. Tenant shall take such measures as are reasonably necessary to
prevent any of its officers, directors, employees or subtenants from using the
surface parking facilities or underground visitor parking areas of the Gainey
Ranch Corporate Center.

         4. In the event of any default by Tenant under the Lease or any
termination or expiration of the Lease or of Tenant's right to possession
thereunder, Tenant's rights under this Addendum shall immediately terminate
without notice or demand. A failure to pay rent when due under this Addendum
shall constitute a breach of and default under the Lease, subject to notice and
cure as provided in the Lease.

         5. The use of parking area, including the parking spaces leased by
Tenant, shall remain subject to Landlord's rules and regulations.

         6. Except as specifically modified by this Addendum, all of the
provisions of the Lease (any other addenda and amendments thereto) remain in
full force and effect.

                                       26
<PAGE>   29
<TABLE>
<CAPTION>
TENANT:                                                       LANDLORD:
<S>                                                           <C>
IPNI Communications Corporation,                              NATIONWIDE REALTY INVESTORS
a Delaware corporation                                        LTD., an Ohio limited liability company
                                                              which is qualified to do business in Arizona as
                                                              Nationwide Realty Investors, L.L.C.

By:                                                           By:
   ------------------------------                                --------------------------------------------
       Peter J. Moriarty                                            Brian J. Ellis
       Chairman & CEO                                               President
                                                                    Chief Operating Officer

Date:                                                         Date:
     ----------------------------                                  ------------------------------------------
</TABLE>

                                       27
<PAGE>   30
                          GAINEY RANCH CORPORATE CENTER

                              RULES AND REGULATIONS

         1. All public areas of the Gainey Ranch Corporate Center (areas other
than those under lease to tenants), shall be under the sole and absolute control
of Landlord who shall have the exclusive right to regulate and control these
areas.

         2. When electric wiring of any kind is introduced it must be connected
as directed by the Landlord, and no boring or cutting for wires will be allowed
except with the consent of the Landlord. No apparatus, other than normal office
machines and equipment of any kind, shall be connected with the electric wiring
without the written consent of the Landlord.

         3. The Tenant shall not do anything in the premises, or bring or keep
anything therein, which will in any way increase or tend to increase the risk of
fire, or which shall conflict with the regulations of the Fire Department or the
fire laws, or with any rules or ordinances established by the Board of Health.
Tenant shall not use any machinery which may cause any objectionable noise, Jar,
or tremor to the floors or walls, or which by its weight might injure the floors
of the building.

         4. The Tenant shall not conduct any auction on the leased premises and
shall not store goods, wares or merchandise on the leased premises, except for
Tenant's own personal use.

         5. All freight and furniture must be moved into, within, and out of the
building under the supervision of the Landlord, and according to such
regulations as may be posted in the office of the building.

         6. Employees of the Landlord shall not perform any work, nor do
anything outside of their regular duties unless under special instruction from
the office, and no employee shall admit any person (Tenant or otherwise) to any
office without specific instructions from the office of the Center.

         7. All keys shall be obtained from the Landlord and all keys shall be
returned to the Landlord upon the termination of this lease. The Tenant shall
not change the locks, or install other locks, on the doors without written
consent of Landlord.

         8. Tenant shall see that the windows and doors of the leased premises
are closed and securely locked before leaving the building and that all lights
are properly turned off.

         9. Tenant shall give prompt notice of any accident to, or defects in,
the building, the plumbing, electric wiring, or air conditioning.

         10. All cleaning and Janitorial services for the building and the
premises shall be provided exclusively through Landlord.

                                       28
<PAGE>   31
         11. Tenant shall not use any method of heating or air conditioning
other than that supplied by Landlord.

         12. Tenants shall cooperate with Landlord in obtaining maximum
effectiveness of the cooling system by closing drapes and other window coverings
when the sun's rays fall on the windows of the premises. Tenant shall not tamper
with or change the setting of any thermostats or temperature control valves.

         13. Landlord reserves the right to exclude or expel from the building
any person who, in the Judgment of Landlord, is intoxicated or under the
influence of liquor or drugs, or who shall in any manner act in violation of any
of the Rules and Regulations of the building.

         14. Landlord reserves the right to exclude from the building at all
times, other than the reasonable hours of the generally recognized business day
as determined by Landlord, all persons who do not present a pass or other
identification acceptable to Landlord.

         15. Canvassing, soliciting and peddling in the building are prohibited
and each Tenant shall cooperate to prevent same.

         16. There shall not be used in any space, or in the public halls of the
building either by any Tenant or others, any hand trucks except those equipped
with rubber tires and side guards.

         17. The toilets, wash basins and other plumbing fixtures shall not be
used for any purpose other than those for which they were constructed, and no
sweepings, rubbish, rags or other substances shall be thrown therein. All damage
resulting from any misuse of fixtures shall be borne by the tenant who, or whose
employees, agents or visitors shall have caused the same.

         18. No bicycles, vehicles or animals of any kind shall be brought into
or kept in or about the leased premises, and no cooking shall be done or
permitted by any Tenant on the premises except the preparation of coffee, tea,
hot chocolate and similar items for the Tenant, its employees and business
visitors. No Tenant shall cause or permit any unusual or objectionable odors to
escape from the premises.

         19. No Tenant shall engage in advertising which, in Landlord's opinion,
tends to impair the reputation or desirability of Gainey Ranch Corporate Center.

         20. Landlord reserves the right at any time to rescind any one or more
of these Rules and Regulations, or to make such other and further reasonable
rules and regulations as in the Landlord's Judgment may from time to time be
necessary for the safety, care and cleanliness of the Center and for the
preservation of order herein.

                                                            Landlord's Initials:

                                                             Tenant's Initials:

                                       29
<PAGE>   32
                            SECOND ADDENDUM TO LEASE

         THIS SECOND ADDENDUM TO LEASE, made and entered into this
of           , 1999 by and between NATIONWIDE REALTY INVESTORS, LTD., an Ohio
limited liability company which is qualified to do business in Arizona as
Nationwide Realty Investors, L.L.C., hereinafter referred to as "Landlord", and
IPNI Communications Corporation, a Delaware corporation, hereinafter referred to
as "Tenant".

                                  WITNESSETH:

          WHEREAS, Landlord leased certain premises in the Gainey Ranch
Corporate Center Building, at 8777 N. Gainey Center Drive in the City of
Scottsdale, County of Maricopa, State of Arizona, to Tenant, pursuant to that
certain Lease dated the      of         , 1999; said Lease and addendum thereto
hereinafter collectively referred to as the "Lease", the premises being more
particularly described therein; and

         WHEREAS, Landlord and Tenant wish to modify and add to the Lease
language; and

         WHEREAS, Landlord and Tenant therefore wish to amend said Lease;

         NOW THEREFORE, in consideration of these present and the agreement of
each other, Landlord and Tenant agree that the said Lease shall be and the same
is hereby amended as follows:

         1. Paragraphs 10.1 through 10.7 of said Lease are hereby deleted in
their entirety.

         2. In Paragraph 20.01 of said Lease the name of the Landlord and the
address are hereby deleted and the correct name and address are herein
substituted as follows:

                         Nationwide Realty Investors, Ltd.
                         One Nationwide Plaza
                         Suite 34T
                         Columbus, Ohio 43215
                         Attn: President

         3. In the last sentence of Paragraph 18.01 and the second sentence of
Paragraph 18.02, the word "Landlord" is hereby deleted, and the word "Tenant" is
herein substituted.

         4. In paragraph 4.02, in line 2, the words "notice from Landlord" are
inserted following the word "after" and the remainder of this sentence as it
exists is herein deleted in full.

         5. In paragraph 5.02, in line 1, the words "from time to time" are
herein deleted and the words "Once a year" are hereby substituted. Regarding the
same paragraph at the top of page three, in line 1, the word "fifteen" is herein
deleted and the word "thirty" is hereby substituted. The next

                                       30
<PAGE>   33
sentence beginning with "The determination..." is herein deleted in full. The
following is added to the last sentence to paragraph 5.02:

                  "except, if Landlord fails to deliver all or a portion of the
                  annual summaries of operating costs within one year of the
                  lease termination date."

         6. In paragraph 5.04, the following is added to the last sentence:

                  "except that, if Landlord fails to deliver all or a portion of
                  the annual summaries of operating Costs within one year of the
                  lease termination date."

         7. In paragraph 5.05(1), the words "market fee for comparable office
buildings" are inserted in line 1 following the first word "A".

         8. In paragraph 7.04, the words "manner of" are herein inserted in line
1 following the word "Tenant's".

         9. In paragraph 7.05, the words "while ceasing to pay rent." are
inserted at the end of said paragraph.

         10. In paragraph 8.02, the following is added as the new last sentence:

                  "Should Landlord be unable to restore said service (except due
                  to causes beyond Landlord's reasonable control other than a
                  power outage), and providing Tenant cannot gain access to said
                  premises as a result thereof for a period of three (3)
                  consecutive days, rent will be abated beginning with the
                  fourth day until service is restored."

         11. In paragraph 8.03, second to last line, the word "upon" is herein
deleted and the words "within thirty (30) days of" are hereby substituted.

         12. In paragraph 8.05, the following is added as the new second
sentence:

         "However, in each case wherein Landlord is allowing prospective tenants
         or buyers to inspect said premises, Landlord will provide twenty-four
         (24) hours notice to Tenant."

         13. (Intentionally Deleted)

         14. (Intentionally Deleted)

         15. (Intentionally Deleted)

                                       31
<PAGE>   34
         16. (Intentionally Deleted)

         17. (Intentionally Deleted)

         18. (Intentionally Deleted)

         19. Paragraph 10.08(a) is hereby deleted in full.

         20. In paragraph 10.09(b), beginning with the first word "Landlord's"
in line 3 the paragraph is re-written as follows:

                  "Landlord's opinion to the structure or HVAC, plumbing,
                  sprinkler systems and major electrical systems of the
                  building, but which otherwise shall not be unreasonably
                  withheld);"

         21. In paragraph 10.11, in the third to the last sentence, the word
"five" is herein deleted and the word "fifteen" is hereby substituted.

         22. (Intentionally Deleted)

         23. In paragraph 11.03, in line 4, the words "in the reasonable opinion
of Landlord and Tenant" are inserted following the word "untenantable".

         24. In paragraph 12.01(a), a period is inserted in line 3 after the
word "responsible" and all remaining words are herein deleted from said
subparagraph.

         25. In paragraph 12.01(c), in line 7, the number "5,000,000" is herein
deleted and the number "3,000,000" is hereby substituted.

         26. In paragraph 12.02(b), a period is inserted after the word
"Landlord" and all remaining words are herein deleted.

         27. In paragraph 12.03, in line 1 and in line 2, the phrase "...or, if
required by Landlord, certified copies of each such insurance policy" are herein
deleted in full.

         28. In paragraph 1.04, the words "caused by the willful misconduct or
negligence on the part of the Tenant" are inserted following the word
"improvements" in line 1.

         29. In paragraph 12.05, the following is added as the new second
sentence:

         "Likewise, Landlord shall defend, indemnify and hold Tenant harmless,
         regardless of any negligence imputed to Tenant as Tenant of the real
         property involved in an injury, from and against any and all loss,
         claims, actions, damages, liability and

                                       32
<PAGE>   35
         expense and connection with the loss of life, personal injury, damage
         to property and any other loss or injury whatsoever arising directly or
         indirectly from or out of Landlord's breach of its obligations of this
         lease, or any occurrence in, upon or at the Project except for the
         premises, or any act or omission of Landlord, its agents, servants,
         employees or invitees. Landlord shall not be required, however to
         indemnify Tenant against a claim arising from Tenant's negligence or
         willful misconduct."

         30. In paragraph 13.01, in line 1, the words "full replacement" are
inserted prior to the word "insurance". Next, in line 2, the words "tenant
improvements," are inserted prior to the word "machinery".

         31. In paragraph 14.01, in line 3, the words "conditioned or delayed"
are inserted at the end of the first sentence. The last sentence of paragraph
14.01 on page 10 is herein deleted in full.

         32. Paragraph 14.02, item (f) is herein revised as follows:

                  "reimbursement for all reasonable out-of-pocket costs incurred
                  by Landlord, including reasonable attorneys' fees in
                  connection with evaluating the request and preparing any
                  related documentation."

         33. In paragraph 14.06, the following is added at the end of the
paragraph:

                  ". . . but only after Tenant has applied said excess in such a
                  manner as to offset Tenant's cost of said assignment or
                  sublease for items such as commissions, tenant improvements,
                  and architect fees, etc."

         34. In paragraph 14.07, in line 2, the words "another building" are
herein deleted and the words "the 2400 Arizona Biltmore Circle Building" are
hereby substituted.

         35. In paragraph 15.04, the following is added as the new second
sentence:

                  "However, Landlord's activity described in paragraph 15.04
                  will not interfere with Tenant's reasonable access to the
                  Building."

         36. In paragraph 16.01, in line 1, the word "ten" is herein deleted and
the word "thirty" is hereby substituted. In line 2, the words "certifying that
to the best of its knowledge" are inserted following the word "writing". Item
(e) beginning in line 10 is deleted in full. In the fifth to the last line, the
words "financial statements" are herein deleted and the words "annual reports"
are hereby substituted.

         37. In paragraph 19.01(b), in line 2, the word "ten" is herein deleted
and the word "thirty is hereby substituted.

                                       33
<PAGE>   36
         38. in subparagraph 19.01(d), the words ",while ceasing to pay rent,"
are inserted following the word "Tenant" in the first line.

         39. In paragraph 19.02(e), the word "reasonable" is herein inserted in
line I prior to the word "attorneys".

         40. In paragraph 20.01, in lines 2 and 3, the consecutive words "if
delivered personally to a responsible employee of the party being served, or"
are herein deleted in full. In line 4, the words "the premises" are herein
deleted in full. The last sentence is deleted in full and replaced with the
following:

                  "Any notice shall be deemed to have been given three (3) days
                  after said notice was mailed." The following is added as the
                  new last sentence:

                  "It is herein acknowledged that a notice from Landlord to
                  Tenant must have a copy sent to Tenant at the exact address as
                  stated in paragraph 1.07 of this Lease."

         41. In paragraph 21.01, in the second to the last line, there is a
period inserted following the word "tenant" and all remaining words of said
paragraph are herein deleted in full.

         42. In paragraph 21.02, the first sentence is herein deleted in full
and replaced with the following:

                   "If Tenant holds over without Landlord's consent, Tenant
                   shall be a Tenant from month-to-month." In line 3, the word
                   "twice" is herein deleted and the words "one and one-quarter"
                   are hereby substituted. Finally, the second to the last
                   sentence in this paragraph is deleted in full.

         43. Paragraph 22.01 is herein deleted in full.

         44. In paragraph 23.02, the words "except if there is gross negligence
or willful misconduct on the part of the Landlord, or if Tenant cannot access
said premises for any reason not addressed elsewhere in said Lease" are added to
the last sentence.

         45. In the Addendum To Lease For Parkin Purposes, in paragraph 4, the
words "beyond any cure period" are inserted in line 1 following the word
"default".

         46. Both parties agree that should a conflict arise between the basic
lease form and this Second Addendum To Lease, said Second Addendum To Lease will
prevail.

                                       34
<PAGE>   37
         47. The following is added as new Paragraph 24:

                  "Tenant has the option to terminate this Lease on the first
                  day of the 37th month of the Term providing Tenant gives
                  Landlord a minimum of six (6) month's written notice and
                  providing Tenant pays Landlord, at the time of said notice,
                  and early lease termination penalty equal to Thirty-four
                  Thousand Four Hundred Ten Dollars & 24/100 ($34,410.24)."

         48. All other terms and conditions of said Lease will remain in full
force and effect.

         IN WITNESS WHEREOF, the parties hereto have executed this instrument by
proper persons thereunto duly authorized so to do the day and year first
hereinabove written.

<TABLE>
<CAPTION>
TENANT:                                                       LANDLORD:

<S>                                                           <C>
IPNI Communications Corporation,                              NATIONWIDE REALTY INVESTORS
a Delaware corporation                                        LTD., an Ohio limited liability company
                                                              which is qualified to do business in Arizona as
                                                              Nationwide Realty Investors, L.L.C.

By:                                                           By:
   -----------------------------                                 --------------------------------------------
       Peter J. Moriarty                                            Brian J. Ellis
       Chairman & CEO                                               President
                                                                    Chief Operating Officer

Date:                                                         Date:
     ---------------------------                                   ------------------------------------------
</TABLE>

                                       35

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