Document:

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                                                                   EXHIBIT 10.22
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                                LEASE AGREEMENT

                                    between

                            ASYST TECHNOLOGIES, INC.
                           a California corporation,

                                      and

                               EXAR CORPORATION,
                             a Delaware corporation

                          Dated as of October 18, 1999

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                                LEASE AGREEMENT

          This Lease Agreement ("Lease") is entered into as of October 18, 1999,
by and between Asyst Technologies, Inc., a California corporation ("Tenant") and
Exar Corporation, a Delaware corporation ("Landlord").

                                   Agreement
          In consideration of the mutual promises contained herein, Landlord and
Tenant agree as follows:

SECTION 1.  Summary Of Lease Provisions

    1.1     Tenant:  Asyst Technologies, Inc. ("Tenant").

    1.2     Landlord: Exar Corporation ("Landlord").

    1.3     Premises: Approximately twenty-two thousand six hundred twenty
(22,620) square feet of space consisting of certain portions (office,
laboratory, and other light industrial areas) of a building located at 48760
Kato Road in the City of Fremont, County of Alameda, State of California as
shown cross-hatched on the site plan attached hereto as Exhibit A, together with
certain rights appurtenant thereto, as more specifically described herein. Upon
the Commencement Date, Tenant shall be entitled to use approximately eighteen
thousand thirty-two (18,032) square feet of the Premises as shown cross-hatched
on Exhibit A-l, attached hereto and incorporated herein. Within six (6) months
of the Commencement Date, on a date to be designated by Tenant, but in no event
later than May 1,2000, Tenant shall take possession of the remaining area of the
Premises, consisting of approximately four thousand five hundred eighty-eight
(4,588) square feet as shown cross-hatched on Exhibit A2, attached hereto and
incorporated herein.

    1.4     Term: Three (3) years and as the same may be extended pursuant to
Section 3.3.

    1.5     Commencement Date: November 1, 1999, subject to the provisions of
Section 3 below.

    1.6     Ending Date: October 31,2002, unless sooner terminated or extended
pursuant to the terms of this Lease.

    1.7     Monthly Rent for Lease Term: Prior to occupying the area indicated
in Exhibit A-2, monthly Rent shall be Twenty-one Thousand Six Hundred Thirty-
eight Dollars and Forty Cents ($21,638.40). Upon occupying the area indicated in
Exhibit A-2 or May 1,2000, whichever shall first occur, monthly Rent payable by
Tenant shall be increased to Twenty-seven Thousand One Hundred Forty-four
Dollars and Zero Cents ($27,144.00). Monthly Rent shall be increased to Twenty-
eight Thousand Two Hundred Seventy-five Dollars and Zero Cents ($28,275.00) for
the period of November 1, 2000 through October 31, 2001, and again increased to
Twenty-nine Thousand Four Hundred Six Dollars and Zero Cents ($29,406.00) for
the period November 1,2001 through October 31,2002. Monthly Rent for Extended
Term is subject to the

                                       1.
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terms of Sections 3.3 and 3.4. Receipt of the first month's Rent is hereby
acknowledged by Landlord. Rent will be paid in advance on the first day of each
month.

    1.8     Security Deposit: Twenty-one Thousand Six Hundred Thirty-eight
Dollars and Forty Cents ($21,638.40), which shall automatically be increased to
Twenty-seven Thousand One Hundred Forty-four Dollars and Zero Cents ($27,144.00)
immediately prior to Tenant occupying the area noted in Exhibit A-2. The
Security Deposit shall be automatically adjusted to be equal to increases in the
monthly Rent.

    1.9     Use of Premises: Administrative, engineering, research and
development, sales and marketing, and directly related activities.  Light
industrial manufacturing shall also be permitted, but only after Landlord's
prior written approval of the exact type of manufacturing which is intended, and
only if there is no use of Hazardous Materials.

    1.10    Parking Spaces: Tenant shall have the non-exclusive right to use
3.24/1000 parking spaces.  Included within this number of permitted spaces and
as set forth on the attached Exhibit A-3, Landlord shall label six (6) stalls in
front of Premises as "Visitors Only," but Landlord shall have no obligation to
ensure that only vehicles belonging to Tenant's employees and guests are parked
at these six (6) stalls.

    1.11    Addresses for Notices:

            To Landlord:     Exar Corporation
                             48720 Kato Road Fremont,
                             California 94538
                             Attn: Legal Department

            To Tenant:       Asyst Technologies, Inc.
                             48761 Kato Road
                             Fremont, California 94538
                             Attn:  Mr. Terry Moshier
                                    President and Chief Operating Officer

SECTION 2.   Property Leased

    2.1     Premises.  Landlord hereby Leases to Tenant and Tenant hereby Leases
from Landlord, upon the terms and conditions set forth herein, certain areas of
that certain building ("Premises") referred to in Section 1.3 above, and as
shown cross-hatched on the Site Plan attached hereto as Exhibits A, A-1 and A-2.
As set forth in Section 1.3, Tenant shall take occupancy of the areas identified
in Exhibit A-1 upon the Commencement Date, and the areas identified in Exhibit
A-2 within six (6) months thereafter, on a date to be specified by Tenant, but
in no event later than, May 1,2000.  In addition, Tenant shall have the
following rights with respect to the real property, more particularly described
in the legal description attached as Exhibit B hereto and the property indicated
by the shaded area on Exhibit A-3 ("Parking Area"): (i) the non-exclusive right
to use no more than the number of parking spaces set forth in Section 1.10
above, the location of which may be designated from time to time by Landlord
subject to the consent of Tenant, which consent shall not be unreasonably
withheld; and (ii) such other non-exclusive rights as are necessary and
convenient to Tenant's possession of the Premises or

                                       2.
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performance of Tenant's obligations under this Lease. Landlord reserves the
right to grant to any user authorized by Landlord, the non-exclusive right to
use the Parking Area for pedestrian and vehicular ingress and egress and
vehicular parking. Landlord also retains the right to freely and without cost
use the front door to the Premises. Prior to taking occupancy of the areas
identified in Exhibit A-2, Tenant shall have the right to walk through said area
for the limited purpose of accessing areas identified in Exhibit A-1.

    2.2     Representations.  Landlord represents that, as of the Commencement
Date of the Lease, to the best of its knowledge, (i) the Premises, including any
tenant improvements thereto made by Landlord under the Lease, shall be in
compliance with all laws and regulations and built in a good and workmanlike
manner with good materials in accordance with plans therefore, and (ii) the
equipment and building systems serving the Premises are in good working order.
Landlord also represents that to the best of its knowledge, there are no
Hazardous Materials on the Premises.

    2.3     Acceptance of Premises.  By taking occupancy, Tenant shall be deemed
to have accepted the Premises as being in good and sanitary order, condition and
repair and takes possession of the Premises, subject to (i) all applicable laws,
covenants, conditions, restrictions, easements and other matters of public
record and (ii) the rules and regulations as may be from time to time
promulgated by Landlord governing the use of the Premises, subject to the
consent of Tenant, which consent shall not be unreasonably withheld, and
further, to have accepted as functional all improvements.  Tenant acknowledges
that it has conducted or had the opportunity to conduct all investigations,
tests and studies concerning the Premises and the Parking Area that Tenant deems
appropriate and material to its decision to Lease the Premises.  In regard to
Hazardous Materials, Landlord shall be responsible for, and bear any clean-up
costs related to, problems affecting the Premises that are attributable to
occurrences taking place before the Commencement Date of the term of the Lease,
and Tenant shall be responsible for, and bear any costs or damages related to,
any problems affecting the Premises that Tenant causes during the term of the
Lease.  Tenant acknowledges that (i) neither Landlord nor Landlord's agents have
made any representation or warranty as to the suitability of the Premises for
the conduct of Tenant's business, the condition of the Premises (except as
otherwise provided in Section 2.2), or the use or occupancy which may be made
thereof and (ii) Tenant has independently investigated and is satisfied that the
Premises are suitable for Tenant's intended use as set forth in Section 1.9
above.  It has been orally represented to Tenant that certain manufacturing
areas may have a "moisture" problem with the floor, and Tenant enters this Lease
with a full and complete knowledge of this condition, and assumes full
responsibility for any damage to its business or operations related to this
condition, provided, however, that (i) Landlord shall repair any damage that
this condition has caused or may cause to the Premises, and (ii) Tenant shall
not bear any responsibility or costs associated with repairing any damage to the
Premises (flooring) occurring after the Commencement Date related to the
"moisture" problem unless Tenant desires to repair same in Tenant's sole
discretion.

SECTION 3.  Term

    3.1     Commencement Date. The term of this Lease ("Lease Term") shall be
for the period specified in Section 1.4 above, subject to extension pursuant to
the terms of Section 3.3 below, commencing on the date set forth in Section 1.5
("Commencement Date") and

                                       3.
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terminating on the date set forth in Section 1.6 ("Ending Date"). The expiration
of the Lease Term or sooner termination of this Lease is referred to herein
sometimes as the "Lease Termination".

    3.2     Delay of Commencement Date.  Landlord shall not be liable for any
damage or loss incurred by Tenant for Landlord's failure for whatever cause to
deliver possession of the Premises by any particular date (including the
Commencement Date), nor shall this Lease be void or voidable on account of such
failure to deliver possession of the Premises; provided that if Landlord does
not deliver possession of the Premises to Tenant by the date which is five (5)
days from the date as set forth in Section 1.5 above with respect to the area
indicated in Exhibit A-l, and sixty (60) days from the date as set forth in
Section 1.5 above with respect to the area indicated in Exhibit A-2, Tenant
shall have the right to terminate this Lease by written notice delivered to
Landlord within five (5) days thereafter, and Landlord and Tenant shall be
relieved of their respective obligations hereunder; provided further that said
five (5) day period shall be extended by the number of days work (if any) on the
Premises is delayed due to fault or neglect of Tenant, acts of Tenant or
Tenant's agents or due to acts of God, labor disputes, strikes, fires, rainy or
stormy weather, acts or failure sot act of public agencies, inability to obtain
labor or materials, earthquake, war, insurrection, riots and other causes beyond
Landlord's reasonable control.

    3.3     Lease Term Extension. Provided Landlord does not and/or will not
have an internal requirement for the Premises, Tenant shall have an opportunity
to extend this Lease for an additional one (1) year period ( "Extended Term") on
the following terms and conditions:

            (a) Tenant and Landlord sign an amendment extending the Lease Term,
and such amendment shall specify the Rent for the Extended Term as provided for
in 3,4 below, and such other terms as the parties may agree to,

            (b) The Lease Term may not be extended pursuant to this Section 3.3
if Tenant is in default in the performance of any of the terms and conditions of
this Lease.

            (c) Except as otherwise modified by the amendment entered into in
accordance with the terms set forth herein, all terms and conditions of this
Lease shall apply during each Extended Term.

            (d) Upon the extension of the Lease Term pursuant to this Section
3.3, the term "Lease Term" as used in this Lease shall thereafter include the
applicable Extended Term and the Lease Termination date shall be the expiration
date of the Extended Term.

    3.4     Rent During any Extended Term shall be at least fair market value
for comparable space in the immediate area, but in no event shall such monthly
Rent be lower than that being paid for the immediately prior month.

SECTION 4.  Use Of Premises

    4.1     Permitted Uses.  Tenant shall use the Premises only in conformance
with applicable governmental laws, regulations, rules and ordinances for the
purposes set forth in Section 1.9 above, and for no other purpose without the
prior written consent of Landlord, which

                                       4.
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consent Landlord may withhold in its sole discretion. Any change in use of the
Premises without the prior written consent of Landlord shall be a Default by
Tenant.

     Subject to the terms and conditions of this Lease and such rules and
regulations as Landlord may from time to time prescribe, Tenant and Tenant's
agents shall have the non-exclusive right to use during the Lease Term the
access roads, sidewalks, landscaped areas and other facilities on the Parking
Area subject to Landlord's rights pursuant to this Section 4.1, Section 4.2
below and Section 9 below.  Landlord reserves the right to grant to any user
authorized by Landlord, the non-exclusive right to use the Parking Area for
pedestrian and vehicular ingress and egress and vehicular parking.  Tenant's use
rights shall terminate upon Lease Termination.  Subject to Tenant's consent,
which shall not be unreasonably withheld, Landlord further reserves the right to
promulgate such reasonable rules and regulations relating to the use of such
portions of the Parking Area and to amend such rules and regulations from time
to time as Landlord may deem appropriate.  Subject to Tenant's rights of consent
referred to in the preceding sentence, any amendments to the rules and
regulations shall be effective as to Tenant, and binding on Tenant, upon
delivery of a copy of such rules and regulations to Tenant.  Tenant and Tenant's
agents shall observe such rules and regulations and any failure by Tenant or
Tenant's agents to observe and comply with the rules and regulations shall be a
Default by Tenant.

    4.2     Tenant to Comply with Legal and Applicable Requirements.  Tenant
shall, at its sole cost, promptly comply with all laws, statutes, ordinances,
rules, regulations, orders or requirements of all municipal, county, state and
federal authorities and all quasi-governmental authorities relating to or
affecting the use, occupational safety, occupancy or condition of the Premises
now in force, or which may hereafter be in force.  Tenant and Landlord shall, in
proportion to the number of parking spaces allocated to them, share the cost of
complying with all laws, statutes, ordinances, rules, regulations, orders or
requirements of all municipal, county, state and federal authorities and all
quasi-governmental authorities relating to or affecting the use, occupational
safety, occupancy or condition of the Parking Area now in force, or which may
hereafter be in force.  Tenant shall be solely responsible for costs related to
the signage as indicated in Exhibit C. Tenant's obligations pursuant to this
Section 4.2 shall include without limitation maintaining or restoring the
Premises and making non-structural alterations and additions in compliance and
conformity with all laws and Applicable Requirements as that term is defined in
Section 24.3, and recorded documents relating to the use, occupational safety,
occupancy or condition of the Premises and/or Parking Area during the Lease
Term; provided, however, that Landlord shall, at its expense, make any
alteration or addition required to bring the Premises and/or Parking Area into
compliance with legal and Applicable Requirements in effect at the time the
Premises, any improvements installed therein by Landlord, or the Parking Area,
respectively, were originally constructed.  At Landlord's option, Landlord may
make the required alteration, addition or change, and Tenant shall pay the cost
thereof as Additional Rent, except as otherwise provided herein.  Immediately
after taking possession of the Premises, Tenant shall obtain or file any
application for permits, licenses or other authorizations required for the
lawful operation of its business at the Premises.  The judgment of any court of
competent jurisdiction or the admission of Tenant in any action or proceeding
against Tenant, regardless of whether Landlord be a party thereto or not, that
Tenant has violated such ordinance, regulation, rule, requirement, recorded
document or statue relating to the use, occupational safety, occupancy or
condition of the Premises or Parking Area shall be conclusive of the fact of
such

                                       5.
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violation by Tenant. Any alterations or additions undertaken by Tenant pursuant
to this Section 4.2 shall be subject to the requirements of Section 10.1 below.

    4.3     Prohibited Uses.  Tenant and Tenant's agents shall not commit or
suffer to be committed any waste upon the Premises.  Tenant and Tenant's agents
shall not do or permit anything to be done in or about the Premises or Parking
Area which will in any way obstruct or interfere with the rights of Landlord, or
injure or annoy Landlord or its employees.  Tenant and Tenant's agents shall not
use or allow the Premises to be used for any unlawful, immoral or any purpose
not permitted by this Lease, nor shall Tenant or Tenant's agents cause,
maintain, or permit any nuisance in, on or about the Premises.  Tenant and
Tenant's agents shall not do or permit anything to be done in or about the
Premises or Parking Area nor bring or keep anything in the Premises or Parking
Area which will in any way increase the rate of any insurance upon the Premises
or Parking Area or any part thereof or any of its contents, or cause a
cancellation of any insurance policy covering the Premises or Parking Area or
any part thereof or any of its contents, nor shall Tenant or Tenant's agents
keep, use or sell or permit to be kept, used or sold in or about the Premises or
Parking Area any articles which may be prohibited by a standard form policy of
fire insurance.  In the event the rate of any insurance upon the Premises or
Parking Area or any part thereof or any of its contents is increased because of
the acts or omissions of Tenant or Tenant's agents, Tenant shall pay, as
Additional Rent, the full cost of such increase; provided however this provision
shall in no event be deemed to constitute a waiver of Landlord's right to
declare a Default hereunder by reason of such increase or of any other rights or
remedies of Landlord in connection with such increase.  Tenant and Tenant's
agents shall not place any loads upon the floor, walls, or ceiling of the
Premises which would endanger the Premises or the structural elements thereof,
nor place any harmful liquids in the drainage system of the Premises.  No waste
materials or refuse shall be dumped upon or permitted to remain upon any part of
the Premises or Parking Area except in enclosed trash containers.  No materials,
supplies, equipment, finished products (or semi-finished products), raw
materials, or other articles of any nature shall be stored upon, or be permitted
to remain on, any portion of the Parking Area.  Tenant shall not use, store on,
dispose or allow the use, storage or disposal, of any Hazardous Materials, as
that term is defined in Section 24.2, on any portion of the Premises.  Tenant
shall indemnify, and hold Landlord, and its officers, directors, employees and
agents harmless from and against any and all claims, losses, damages,
liabilities or expenses (including, without limitation, attorneys' fees) arising
in connection with a breach of the obligations set forth herein.  Tenant's
obligation to defend, hold harmless and indemnify pursuant to this Section shall
survive Lease Termination or expiration.

SECTION 5. Rent

    5.1     Rent. Tenant shall pay to Landlord as Rent for the Premises
("Rent"), in advance, on the first day of each calendar month, commencing on the
date specified in Section 1.5 and continuing throughout the Lease Term and any
extension thereof, the Rent set forth in Section 1.7 or 3.4 above, as the case
may be. Rent shall be prorated for any partial month during the Lease Term. Rent
shall be payable without deduction, offset, prior notice or demand in lawful
money of the United States to Landlord at the address herein specified for
purposes of notice or to such other persons or such other places as Landlord may
designate in writing.

                                       6.
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    5.2     Additional Rent. Ail charges, costs and expenses and other sums
which Tenant is required to pay hereunder, including but not limited to the
service fee specified in Section 6 (together with all interest and charges that
may accrue thereon in the event of Tenant's failure to promptly pay the same),
and all damages, costs and expenses which Landlord may incur by reason of any
Default by Tenant shall be deemed to be additional rent hereunder ("Additional
Rent"). In the event of nonpayment by Tenant of any Additional Rent, Landlord
shall have all the rights and remedies with respect thereto as Landlord has for
the nonpayment of Rent. The term "Rent" as used in the Lease shall mean Rent and
Additional Rent.

    5.3     Security Deposit.  Prior to the Commencement Date, Tenant shall
deposit with Landlord additional monies in the amount and at the times set forth
in Section 1.8 as security for Tenant's faithful performance of Tenant's
obligations hereunder.  If Tenant fails to pay Rent or Additional Rent due
hereunder, Landlord may use, apply or retain all or any portion of said Security
Deposit for the payment of such Rent or Additional Rent in default.  If Landlord
so uses or applies all or any portion of said Security Deposit, Tenant shall,
within ten (10) working days after receipt of written demand therefor, deposit
cash in such account in an amount sufficient to restore said Security Deposit to
the full amount hereinabove stated.  Said Security Deposit, or so much thereof
as has not theretofore been applied by Landlord in accordance with this Section,
shall be returned to Tenant within thirty (30) days after termination or
expiration of the Lease.

SECTION 6.   Services. Provided that Tenant is not in Default, Landlord shall,
for a monthly fee (the "Service Fee") of Nine Thousand Nine Hundred Seventeen
Dollars and Sixty Cents ($9,917.60) until Tenant takes possession of the 4,588
square feet shown as cross-hatched on Exhibit A-2 and Twelve Thousand Four
Hundred Forty-one Dollars and Zero Cents ($12,441.00) thereafter, payable in
advance on the first day of each calendar month, furnish and maintain (if
applicable) throughout the term of this Lease ' and any Extended Term, the
following Services in connection with Tenant's use of the Premises, Parking
Areas and common areas:

     (a)   Janitorial and cleaning services five (5) nights per week, as is
           customary at the site;

     (b)   Electricity, hot and cold water, gas, if any, and all other
           utilities, including operating maintenance repairs;

     (c)   Heating, ventilation and air conditioning;

     (d)   Pest extermination as required;

     (e)   Twenty-four (24) hour access to and security for the Premises;

     (f)   Rubbish removal as is customary at the site;

     (g)   Utilization of existing telephone connection and data lines (does not
           include actual usage, which will be billed directly to Tenant by the
           selected service provider);

     (h)   High pressure air and vacuum;

     (i)   Landscape as is customary at the site;

     (j)   Parking area maintenance;

     (k)   Real property taxes;

                                       7.
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    (l)   Cafeteria use;

    (m)   Exterior window cleaning (twice annually); and

    (n)   Building insurance.

SECTION 7. Taxes.

    7.1   Personal Property Taxes.  Tenant shall cause Tenant's trade fixtures,
equipment, furnishings, furniture, merchandise, inventory, machinery, appliance
and other personal property installed or located on the Premises (collectively
the "Personal Property") to be assessed and billed separately from the Premises.
Tenant shall pay before delinquency any and all taxes, assessments and public
charges levied, assessed or imposed upon or against Tenant's personal property.
If any of Tenant's personal property shall be assessed with the real property
comprising the Premises, Tenant shall pay to Landlord, as Additional Rent, the
amounts attributable to Tenant's personal property, subject to Tenant's review
of the communications from the taxing authorities to Landlord and to Tenant's
reasonable consent to the methodology used to calculate Tenant's share of any
taxes due.  Any such payment by Tenant to Landlord shall be due ten (10) days
before the payment of the taxes in question are due to the taxing authorities.
Tenant shall comply with the provisions of any law, ordinance, rule or
regulation of taxing authorities which require Tenant to file a report of
Tenant's personal property located on the Premises.

SECTION 8.  Insurance; Indemnity; Waiver

    8.1     Insurance by Tenant. Tenant shall, during the Lease Term, at
Tenant's sole cost and expense, procure and keep in force the following
insurance:

            (a) Personal Property Insurance. "All risk" property insurance,
including, without limitation, coverage for boiler and machinery (if
applicable); sprinkler damage; vandalism; malicious mischief; and demolition,
increased cost of construction and contingent liability from changes in building
laws on all Leasehold improvements installed in the Premises by Tenant at its
expense (if any) and on all equipment, trade fixtures, inventory, fixtures and
personal property located on or in the Premises, including improvements or
fixtures hereinafter constructed or installed on the Premises. Such insurance
shall be in an amount equal to the full replacement cost of the aggregate of the
foregoing and shall provide coverage comparable to the coverage in the standard
ISO all risk form, when such form is supplemented with the coverages required
above.

            (b) Liability Insurance. Comprehensive general liability insurance
for the mutual benefit of Landlord and Tenant, against any and all claims for
personal injury, death or property damage occurring in, or about the Premises
and Parking Area (and Tenant's operations on the Premises), or arising out of
Tenant's or Tenant's agents' use of the Parking Area or use or occupancy of the
Premises. Such insurance shall have a combined single limit of not less than Two
Million Dollars ($2,000,000). Such insurance shall contain a cross-liability
(severability of interests) clause and an extended ("broad form") liability
endorsement, including blanket contractual coverage. Such liability insurance
shall be primary and not contributing to any insurance available to Landlord,
and Landlord's insurance (if any) shall be in excess thereto.

                                       8.
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            (c) Other. Such other insurance as required by law, including,
without limitation, workers' compensation insurance.

            (d) Form of the Policies. The policies required to be maintained by
Tenant pursuant to Sections 8.1(a), (b) and (c) above shall be with companies,
on forms, with deductible amounts (if any), and loss payable clauses
satisfactory to Landlord, shall including Landlord as additional insureds.
Certificates of insurance shall be delivered to Landlord prior to the
Commencement Date; a new certificate shall be delivered to Landlord within
thirty (30) days after the renewal of a policy on its expiration. Tenant shall
have the right to provide insurance coverage which it is obligated to carry
pursuant to the terms hereof in a blanket policy, provided such blanket policy
expressly affords coverage to the Premises and to Tenant as required by this
Lease. Tenant shall obtain a written obligation on the part of Tenant's
insurer(s) to notify Landlord in writing of any delinquency in premium payments
and at least thirty (30) days prior to any cancellation of any policy.

    8.2     Failure by Tenant to Obtain Insurance.  If Tenant does not take out
the insurance required pursuant to Section 8.1 or keep the same in full force
and effect, Landlord may, but shall not be obligated to, take out the necessary
insurance and pay the premium therefor, the Tenant shall repay to Landlord, as
Additional Rent, the amount so paid promptly upon demand.  In addition, Landlord
may recover from Tenant and Tenant agrees to pay, as Additional Rent, any and
all reasonable expenses (including attorneys' fees) and damages which Landlord
may sustain by reason of the' failure of Tenant to obtain and maintain such
insurance, it being expressly declared that the expenses and damages of Landlord
shall not be limited to the amount of the premiums thereon.

    8.3     Tenant Indemnification.  Tenant shall indemnify, hold harmless, and
defend Landlord (except for Landlord's gross negligence or willful misconduct)
against all claims, losses or liabilities for injury or death to any person or
for damage to or loss of use of any property arising out of any occurrence in,
on or about the Premises or Parking Area, if caused or contributed to by Tenant
or Tenant's agents, or arising out of any occurrence in, upon or at the Premises
or on account of the use, condition, occupational safety or occupancy of the
Premises during the term of the Lease.  It is the intent of the parties hereto
that the indemnity contained in this Section 8.3 shall not be limited or barred
by reason of any passive negligence on the part of Landlord or Landlord's agents
except as expressly provided herein.  Such indemnification shall include and
apply to attorneys' fees, investigation costs, and other costs actually incurred
by Landlord.  Tenant shall further indemnify, defend and hold harmless Landlord
from and against any and all claims arising from any breach or default in the
performance of any obligation on Tenant's' part performed under the terms of
this Lease.  The provisions of this Section 8.3 shall survive Lease Termination
with respect to any damage, injury, death, breach or Default occurring prior to
such termination.

    8.4     Landlord Indemnification.  Landlord shall indemnify, hold harmless,
and defend Tenant (except for Tenant's gross negligence or willful misconduct)
against all claims, losses or liabilities for injury or death to any person or
for damage to or loss of use of any property arising out of any occurrence in,
on or about the Premises or Parking Area, if caused or contributed to by
Landlord or Landlord's agents, or arising out of any occurrence in, upon or at
the Premises or on account of the use, condition, occupational safety or
occupancy of the

                                       9.
<PAGE>

Premises. It is the intent of the parties hereto that the indemnity contained in
this Section 8.4 shall not be limited or barred by reason of any passive
negligence on the part of Tenant or Tenant's agents except as expressly provided
herein. Such indemnification shall include and apply to attorneys' fees,
investigation costs, and other costs actually incurred by Tenant. The provisions
of this Section 8.4 shall survive Lease Termination with respect to any damage,
injury or death occurring prior to such termination

    8.5     Claims by Tenant. Except as otherwise provided herein, Landlord
shall not be liable to Tenant, and Tenant waives all claims against Landlord,
for injury or death to any person, damage to any property, or loss of use of any
property in the Premises or Parking Area, by and from all causes, including
without limitation, any defect in the Premises or Parking Area, the presence of
any Hazardous Materials in or about the Premises or Parking Area, and/or any
damage or injury resulting from fire, steam, electricity, gas water or rain,
which may leak or flow form or into any part of the Premises, or from breakage,
leakage, obstruction or other defects of pipes, sprinklers, wires, appliances,
plumbing, air conditioning or lighting, fixtures, whether the damage or injury
results from conditions arising upon the Premises or Parking Area or from other
sources. Tenant or Tenant's agents shall immediately notify Landlord in writing
of any known defect in the Premises or Parking Area. The provisions of this
Section 8.4 shall not apply to any damage or injury caused by Landlord's willful
misconduct or gross negligence.

    8.6     Mutual Waiver of Subrogation.  Landlord hereby releases Tenant, and
Tenant hereby releases Landlord, and their respective officers, agents,
employees and servants, from any and all claims or demands of damages, loss,
expense or injury to the Premises or to the furnishings, fixtures, equipment,
inventory or other property of either Landlord or Tenant in, about or upon the
Premises, which is caused by or results from perils, events, or happenings which
are the subject of insurance carried by the respective parties pursuant to this
Section 8 and in force at the time of any such loss, whether due to the
negligence of the other party or its agents and regardless of cause or origin;
provided, however, that such waiver shall be effective only to the extent
permitted by the insurance covering such loss and to the extent such insurance
is not prejudiced thereby.

SECTION 9.  Repairs And Maintenance

    9.1     Landlord's Responsibilities. Subject to the provisions of Section 12
below, Landlord shall maintain in reasonably good order and repair the
structural roof and roof surface, structural and exterior walls (including
painting thereof), HVAC systems other than Tenant alteration, the plumbing
systems, the electrical systems, and the foundations of the Premises, except for
any repairs required because of the wrongful or negligent act of Tenant or
Tenant's agents, which repairs shall be made at the expense of Tenant and as
Additional Rent. Tenant shall give prompt written notice to Landlord of any
known maintenance work required to be made by Landlord pursuant to this Section
9.1

    9.2     Tenant's Responsibilities.  Except as expressly provided in Section
9.1 above, Tenant shall use and maintain in the entire Premises and every part
thereof in good order, condition and repair.  Tenant will be responsible for all
damages resulting from its negligence or willful misconduct.  Tenant's repairs
and maintenance responsibilities under this Section include clean-up and removal
of all Hazardous Materials from the Premises and/or the Parking Area and

                                      10.
<PAGE>

all contamination caused or contributed to by such Hazardous Material, but only
to the extent those Hazardous Materials and that contamination have been caused
or contributed to by Tenant. Tenant's clean-up and removal obligations under
this Section of the Lease shall survive the expiration or sooner termination of
this Lease. If Tenant fails to make repairs or perform maintenance work required
of Tenant hereunder within three (3) days after notice from Landlord specifying
the need for such repairs or maintenance work, Landlord or Landlord's agents
may, in addition to all other rights and remedies available hereunder or by law
and without waiving any alternative remedies, enter into the Premises and make
such repairs and/or perform such maintenance work. If Landlord makes such
repairs and/or performs such maintenance work, Tenant shall reimburse Landlord
upon demand and as Additional Rent, for all costs associated with such repairs
and/or maintenance work. Landlord shall have no liability to Tenant for any
damage, inconvenience or interference with the use of the Premises by Tenant or
Tenant's agents as a result of Landlord performing any such repairs or
maintenance. Tenant shall reimburse Landlord, on demand and as Additional Rent,
for the cost of damage to the Premises caused by Tenant or Tenant's agents.
Tenant expressly waives the benefits of any statute now or hereafter in effect
(including without limitation the Section 1942 of the California Civil Code and
any similar law, statute or ordinance now or hereafter in effect) which would
otherwise afford Tenant the right to make repairs at Landlord's expense (or to
deduct the cost of such repairs from Rent due hereunder) or to terminate this
Lease because of Landlord's failure to keep the Premises in good and sanitary
order.

SECTION 10.  Alterations And Improvements

    10.1    In General. Except as otherwise detailed in the attached Exhibits A-
l, A-2, and A-3, Tenant shall not make, or permit to be made, any alterations,
changes, enlargements, improvements or additions (collectively "alterations")
in, on, about or to the Premises, or any part thereof, including alterations
required pursuant to Section 4.2, without the prior written consent of Landlord
and without acquiring and complying with the conditions of all permits required
for such alterations by any governmental authority having jurisdiction thereof.
The initial improvement responsibilities and costs shall be divided as follows:
Demising as indicated in Exhibit A, installation of security doors, and
provision at its present location of 200 pair copper feeder cable (without
warranty or representation as to condition or suitability for Tenant's
requirements) shall be performed by Landlord, and all other improvements shall
be installed by Tenant at its expense and risk. The term "alterations" as used
in this Section 10 shall also include all heating, lighting, electrical
(including all wiring, conduit, outlets, drops, buss ducts, main and subpanels),
air conditioning, and partitioning in the Premises made by Tenant, regardless of
how affixed to the Premises. As a condition to the giving of its consent,
Landlord may impose such requirements as Landlord may deem necessary in its sole
discretion, including without limitation, the manner and time in which the work
is done; a right of approval of the contractor by whom the work is to be
performed; the requirement that Tenant post a completion bond in an amount and
form satisfactory to Landlord; and the requirement that Tenant reimburse
Landlord, as Additional Rent, for Landlord's actual costs incurred in reviewing
any proposed alteration, whether or not Landlord's consent is granted. In the
event Landlord consents to the making of any alterations by Tenant, the same
shall be made by Tenant at Tenant's sole cost and expense, in accordance with
the plans and specifications approved in writing by Landlord. Tenant shall
provide written notice to Landlord at least ten (10) working days prior to
employing any laborer or contractor to perform services related to, or receiving
materials for use upon the

                                      11.
<PAGE>

Premises, and prior to the commencement of any work of improvements on the
Premises. Any alterations to the Premises made by Tenant shall be made in
accordance with applicable law, ordinances, regulations and codes and in a
first-class workmanlike manner. In making any such alterations, Tenant shall, at
Tenant's sole cost and expense, file for and secure and comply with any and all
permits or approvals required by any governmental departments or authorities
having jurisdiction thereof and any utility company having an interest therein.
In no event shall Tenant make any structural changes to the Premises or make any
changes to the Premises which would weaken or impair the structural integrity of
the Premises.

    10.2    Removal Upon Lease Termination. At the time Tenant requests
Landlord's consent, Tenant shall request a decision from Landlord in writing as
to whether Landlord will require Tenant, at Tenant's expense, to remove any such
alterations and restore the Premises to their prior condition at Lease
Termination. Landlord may defer such decision until prior to the expiration of
the Lease Term as described below. The initial improvements as outlined in
Exhibits A-l, A-2, and A-3 are specifically excepted from this Section, and
Tenant shall have no obligation to remove those improvements. In the event
Tenant failed to earlier obtain Landlord's written decision as to whether Tenant
will be required to remove any alteration or in the event Landlord elected to
defer such decision, then no less than five (5) nor more than thirty (30) days
prior to the expiration of the Lease Term, Tenant by written notice to Landlord
shall request Landlord to inform Tenant whether or not Landlord desires to have
any alterations made to the Premises by Tenant removed at Lease Termination.
Following receipt of such notice, Landlord may elect to have all or a portion of
Tenant's alterations removed from the Premises at Lease Termination, and Tenant
shall, at its sole cost and expense, remove at Lease Termination such
alterations designated by Landlord for removal and repair all damage to the
Premises arising from such removal. In the event Tenant fails to so request
Landlord's decision or fails to remove any alterations designated by Landlord
for removal, Landlord may remove any alterations made to the Premises by Tenant
and repair all damage to the Premises arising from such removal, and may recover
from Tenant all costs and expenses incurred thereby as Additional Rent. Tenant's
obligation to pay such costs and expenses to Landlord shall survive Lease
Termination. Unless Landlord elects to have Tenant remove (or, upon Tenant's
failure to obtain Landlord's decision, Landlord removes) any such alterations,
all such alterations, except for moveable furniture and trade fixtures of Tenant
not affixed to the Premises, shall become the property of Landlord upon Lease
Termination (without any payment therefor) and remain upon and be surrendered
with the Premises at Lease Termination.

    10.3    Landlord's Improvements.  All fixtures, improvements or equipment
which are installed, constructed on or attached to the Premises by Landlord
shall be a part of the realty and belong to Landlord.

SECTION 11.  Default And Remedies

    11.1    Events of Default. The term "Default" or "Default by Tenant" as used
in this Lease shall mean the occurrence of any of the following events:

            (a) Tenant's failure to immediately pay Rent or Additional Rent when
and as due;

                                      12.
<PAGE>

            (b) Tenant's vacation or abandonment of the Premises;

            (c) Commencement and continuation for at least ten (10) days (in the
case of a voluntary proceeding) or forty-five (45) days (in the case of an
involuntary proceeding) of any case, action or proceeding by, against or
concerning Tenant under any federal or state bankruptcy, insolvency or other
debtor's relief law, including without limitation, (i) a case under Title 11 of
the United States Code concerning Tenant, whether under Chapter 7, 11, or 13 of
such Title or under any other chapter, or (ii) a case, action or proceeding
seeking Tenant's financial reorganization or an arrangement with any of Tenant's
creditors;

            (d) Voluntary or involuntary appointment of a receiver, trustee,
keeper, or other person who take possession for more than twenty (20) days of
substantially all of Tenant's assets or of any asset used in Tenant's business
on the Premises, regardless of whether such appointment is as a result of
insolvency or any other cause;

            (e) Execution of an assignment for the benefit of creditors of
substantially all assets of Tenant available by law for the satisfaction of
judgment creditors;

            (f) Commencement of proceedings for winding up or dissolving
(whether voluntary or involuntary) the entity of Tenant;

            (g) Levy of a writ of attachment or execution on Tenant's interest
under this Lease, if such writ continues for a period ten (10) days;

            (h) Transfer or attempted Transfer of this Lease or the Premises by
Tenant contrary to the provisions of Section 19 below; or

            (i) Breach by Tenant of any term, covenant, condition, warranty, or
other provision contained in this Lease or of any other obligation owing or due
to Landlord hereunder.

    11.2    Remedies.  Upon any Default by Tenant, Landlord shall have the
following remedies, in addition to all other rights and remedies provided by
law, to which Landlord may resort cumulatively, or in the alternative:

            11.2.1.  Termination. Upon any Default by Tenant, Landlord shall
have the right (but not the obligation) to give written notice to Tenant of such
default and terminate this Lease and Tenant's right to possession of the
Premises if (i) such default is in the payment of Rent or Additional Rent and is
not cured within three (3) days after any such notice, or, (ii) with respect to
the defaults referred to in Sections 11.1 (b), (e), (f), (h), and (i), such
default is not cured within ten (10) days after any such notice (or if a default
under Sections 11 .l(b) or (i) cannot be reasonably cured within ten (10) days,
if Tenant does not commence to cure the default within the ten (10) day period
or does not diligently and in good faith prosecute the cure to completion), or,
(iii) with respect to the defaults specified in Sections 11.1(c), (d) and (g)
such default is not cured within the respective time periods specified in those
subsections. The parties agree that any written notice given by Landlord to
Tenant pursuant to this Section 11.2.1 shall be sufficient notice for purposes
of California Code of Civil Procedure Section 1161 and Landlord shall not be
required to given any additional notice in order to be entitled to commence an
unlawful

                                      13.
<PAGE>

detainer proceeding. Upon termination of this Lease and Tenant's right to
possession of the Premises, Landlord shall have the right to recover from
Tenant:

               (a) The worth at the time of award of the unpaid Rent and
Additional Rent which had been earned at the time of termination;

               (b) The worth at the time of award of the amount by which the
Rent and Additional Rent which would have been earned after termination until
the time of award exceeds the amount of such Rent and Additional Rent loss that
Tenant proves could have been reasonably avoided;

               (c) The worth at the time of award (computed by discounting at
the discount rate of the Federal Reserve Bank of San Francisco at the time of
award plus one percent) of the amount by which the Rent and Additional Rent for
the balance of the Lease Term after the time of award exceed the amount of such
Rent and Additional Rent loss that Tenant proves could be reasonably avoided;

               (d) Any other amounts necessary to compensate Landlord for all
detriment proximately caused by the Default by Tenant or which in the ordinary
course of events would likely result, including without limitation the
following:

                   (1) Expenses in retaking possession of the Premises;

                   (2) Expenses for cleaning, repairing or restoring the
Premises (including, without limitation, expenses incurred in connection with
the clean-up and removal of Hazardous Materials from the Premises and/or Parking
Area if caused or contributed to by Tenant);

                   (3) Expenses for removing, transporting and storing any of
Tenant's property left at the Premises (although Landlord shall have no
obligation to remove, transport, or store any such property);

                   (4) Expenses of reletting the Premises, including without
limitation, brokerage commissions and attorney' fees;

                   (5) Attorneys' fees and related court and litigation costs;

                   (6) Costs of carrying the Premises such as repairs,
maintenance, taxes and insurance premiums, utilities and security precautions
(if any); and

                   (7) Diminution in value of the Premises and Parking Areas.

          11.2.2  Continuance of Lease.  Upon any Default by Tenant and unless
and until Landlord elects to terminate this Lease pursuant to Section 11.2.1
above, this Lease shall continue in effect after the Default by Tenant and
Landlord may enforce all its rights and remedies under this Lease, including
without limitation, the right to recover payment of Rent and Additional Rent as
they become due.  Neither efforts by Landlord to mitigate damages caused by a
Default by Tenant nor the acceptance of any Rent and Additional Rent shall
constitute a waiver

                                      14.
<PAGE>

by Landlord of any of Landlord's rights or remedies, including the right to said
remedies specified in Section 11.2.1 above.

SECTION 12.  Damage Or Destruction

    12.1    Damage or Destruction Near End of Lease Term.  In the event the
Premises are materially damaged or destroyed in whole or in part from any cause
during the Lease Term or Extended Term, either party may, at its sole option,
terminate this Lease as of the date of the event of damage or destruction by
giving written notice to the other party of the noticing party's election to do
so within fifteen (15) days after the event of such damage or destruction.

    12.2    Termination of Lease.  If the Lease is terminated pursuant to this
Section 12, Landlord shall receive no further Rent and Additional Rent and will
be obligated to return Rent or Additional Rent on a pro rata basis.

    12.3    Liability for Personal Property. In no event shall Landlord have any
liability for, nor shall it be required to repair or restore, any injury or
damage to any improvements, alterations or additions to the Premises made by
Tenant, trade fixtures, equipment, merchandise, furniture, or any other property
installed by Tenant or at the expense of Tenant. If Landlord or Tenant do not
elect to terminate this Lease pursuant to this Section 12, Tenant shall be
obligated to promptly rebuild or restore the same to the condition existing
immediately prior to the damage or destruction in accordance with the provisions
of Section 10.1.

    12.4    Waiver of Civil Code Remedies.  Landlord and Tenant acknowledge that
the rights and obligations of the parties upon damage or destruction of the
Premises are as set forth herein; therefore Tenant hereby expressly waives any
rights to terminate this Lease upon damage or destruction of the Premises,
except as specifically provided by this Lease, including without limitation any
rights pursuant to the provisions of Subdivision 2 of Section 1932 and
Subdivision 4 of Section 1933 of the California Civil Code, as amended from time
to time, and the provisions of any similar law hereinafter enacted, which
provisions relate to the termination of the hiring of a thing upon its
substantial damage or destruction.

SECTION 13.  Liens

    13.1    Premises to Be Free of Liens.  Tenant shall pay for all labor and
services performed for, and all materials used by or furnished to Tenant,
Tenant's agents, or any contractor employed by Tenant with respect to the
Premises.  Tenant shall indemnify and hold Landlord harmless from and keep the
Premises and Parking Area free from any liens, claims, demands, encumbrances, or
judgments, including all costs, liabilities and attorneys' fees with respect
thereto, created or suffered by reason of any labor or services performed for,
or materials used by or furnished to Tenant or Tenant's agents or any contractor
employed by Tenant with respect to the Premises.  Landlord shall have the right,
at all times, to post and keep posted on the Premises any notices permitted or
required by law, or which Landlord shall deem proper, for the protection of
Landlord and the Premises and Parking Area, and any other party having an
interest therein, from mechanics; and materialmen's liens, including without
limitation a notice of nonresponsibility.  In the event Tenant is required to
post an improvement bond with a public

                                      15.
<PAGE>

agency in connection with any work performed by Tenant on or to the Premises,
Tenant shall include Landlord as an additional obligee.

     Tenant shall not cause or suffer any lien to be recorded against the
Premises and/or the Parking Area as a consequence of, or in any way related to,
the presence, use, storage, clean-up or disposal of Hazardous Materials in or
about the Premises and/or the Parking Area, including any so-called state,
federal or local "super fund" lien relating to the clean-up and removal of
Hazardous Materials in or about the Premises and/or the Parking Area.

     13.2    Notice of Lien; Bond. Should any claim of lien be filed against, or
any action be commenced affecting, the Premises, Tenant's interest in the
Premises or the Parking Area, Tenant shall give Landlord notice of such lien or
action within three (3) days after Tenant receives notice of the filing of the
lien or the commencement of the action. In the event that Tenant shall not,
within twenty (20) days following the imposition of any such lien, cause such
lien to be released of record by payment or posting of a proper bond, released
or record by payment or posting of a proper bond, Landlord shall have, in
addition to all other remedies provided herein and by law, the right, but not
the obligation, to cause the same to be released by such means as Landlord shall
deem proper, including payment of the claim giving rise to such lien or posting
or a proper bond. All such sums paid by Landlord and all expenses incurred by
Landlord in connection therewith, including attorneys' fees and costs, shall be
payable to Landlord by Tenant as Additional Rent on demand.

SECTION 14.  Landlord's Right Of Access To Premises. Landlord reserves and shall
have the right and Tenant and Tenant's agents shall permit Landlord and
Landlord's agents to enter the Premises at any reasonable time, and with
reasonable notice, for the purpose of (i) inspecting the Premises, (ii)
performing Landlord's maintenance and repair responsibilities set forth herein,
or (iii) posting notices of non-responsibility or at any time Tenant is in
default hereunder, or at such other times as agreed to by Landlord and Tenant,
and without notice for protecting the Premises in the event of an emergency.  In
the event of an emergency, Landlord shall have the right to use any and all
means which Landlord may deem proper to gain access to the Premises.  Any entry
to the Premises by Landlord or Landlord's agents in accordance with this Section
14 or any other provision of this Lease shall not under any circumstances be
construed or deemed to be a forcible or unlawful entry into, or a detainer of
the Premises, or an eviction of Tenant from the Premises or any portion thereof
nor give Tenant the right to abate the Rentals payable under this Lease.  Tenant
hereby waives any claims for damages for any injury or inconvenience to or
interference with Tenant's business, any loss of occupancy or quiet enjoyment of
the Premises, and any other loss occasioned by Landlord's or Landlord's agents'
entry into the Premises as permitted by this Section 14 or any other provision
of this Lease.

SECTION 15.  Landlord's Right To Perform Tenant's Covenants. Except as otherwise
expressly provided herein, if Tenant shall at any time fail to make any payment
or perform any other act required to be made or performed by Tenant under this
Lease, Landlord may upon ten (10) days written notice to Tenant, but shall not
be obligated to and without waiving or releasing Tenant from any obligation
under this Lease, make such payment or perform such other act to the extent that
Landlord may deem desirable, and in connection therewith, pay expenses and
employ counsel.  All sums so paid by Landlord and all penalties,

                                      16.
<PAGE>

interest and costs in connection therewith shall be due and payable by Tenant as
Additional Rent upon demand.

SECTION 16.  Holding Over. This Lease shall terminate without further notice at
the expiration of the Lease Term, unless the Lease is extended in accordance
with the terms specified in Section 3.  If the Lease is not extended pursuant to
Section 3, it is the desire of Landlord to have Tenant vacate the Premises
pursuant to Section 24.14 below.  Therefore, any holding over by Tenant after
Lease Termination shall not constitute a renewal or extension of the Lease Term,
nor give Tenant any rights in or to the Premises except as expressly provided in
this Lease.  Any holding over after Lease termination without the written
consent of Landlord shall be construed to be a tenancy from month to month, at
200% of the monthly Rent for the month preceding Lease Termination in addition
to all Additional Rent payable hereunder, and shall otherwise be on the terms
and conditions herein specified insofar as applicable.  If Tenant remains in
possession of the Premises after Lease Termination without Landlord's consent,
Tenant shall indemnify Landlord against any loss or liability resulting from
Tenant's failure to surrender the Premises. If at any time during or after the
Lease Term, Tenant is required under the terms of this Lease or by any
governmental authority, to place any structure in or about the Premises and/or
the Parking Area, or perform any clean-up or submit any closure plan or
monitoring procedure in or about the Premises and/or the Parking Area, as the
consequence of a Hazardous Materials in or about, the Premises and/or the
Parking Area, and the structure is not removed and the procedures or plans are
not completed prior to Lease Termination, Landlord shall be entitled to all
damages directly or indirectly incurred.

SECTION 17.  Notices. Any notices required or desired to be given under this
Lease shall be in writing.  Any such notice shall be deemed to have been given
seventy-two hours have elapsed from the time such notice was deposited in the
United States mail, certified or registered mail and postage prepaid, addressed
as set forth in Section 1.11 above.

SECTION 18.  Attorneys' Fees.  In the event either party hereto shall bring any
action or legal proceeding for damages for an alleged breach of any provision of
this Lease, to recover Rent or Additional Rent, to enforce an indemnity
obligation, to terminate the tenancy of the Premises, or to enforce, protect,
interpret, or establish any term, condition, or covenant of this Lease or right
or remedy of either party, the prevailing party shall be entitled to recover, as
a part of such action or proceeding, reasonable attorneys' fees and court costs,
including attorneys' fees and costs for appeal, as may be fixed by the court or
jury.

SECTION 19.  Assignment, Subletting And Hypothecation

     19.1    Assignment. Tenant shall not voluntarily sell, assign or transfer
all or any part of Tenant's interest in this Lease or in the Premises or any
part thereof, sublease all or any part of the Premises, or permit all or any
part of the Premises to be used by any person or entity other than Tenant or
Tenant's employees.

     19.2    No Bonus Value.  It is the intent of the parties hereto that this
Lease shall confer upon Tenant only the right to use and occupy the Premises,
and to exercise such other rights as are conferred upon Tenant by this Lease.
The parties agree that this Lease is not intended to have a bonus value, nor to
serve as a vehicle whereby Tenant may profit by a future assignment

                                      17.
<PAGE>

or sublease of this Lease or the right to use or occupy the Premises as a result
of any favorable terms contained herein or any future changes in the market for
leased space. It is the intent of the parties that any such bonus value that may
attach to this Lease shall be and remain the exclusive property of Landlord.

     19.3    Corporations.  Any dissolution, merger, consolidation or other
reorganization of Tenant, any sale or transfer (or cumulative sales or
transfers) of the capital stock of Tenant in excess of fifty percent (50%), or
any sale (or cumulative sales) of all of the assets of Tenant shall be deemed an
assignment of this Lease requiring the prior written consent of Landlord, which
consent shall not be unreasonably withheld.  Any such sale of stock or assets of
Tenant without the prior written consent of Landlord shall be a Default by
Tenant hereunder.  The foregoing notwithstanding, (i) the sale or transfer of
any or all of the capital stock of a corporation, the capital stock of which is
now or hereafter becomes publicly traded, shall not be deemed an assignment of
this Lease, and (ii) any merger, consolidation, or other reorganization of
Tenant in which shareholders who hold shares of Tenant immediately before the
transaction own 50% or more of the surviving entity immediately after the
transaction shall not be deemed an assignment of this Lease.

     19.4    Reasonable Provisions. Tenant expressly agrees that the provisions
of this Section 19 are not unreasonable standards or conditions for purposes of
Section 1951.4(b)(2) of the California civil Code, as amended from time to time.

     19.5    Attorneys' Fees.  Tenant shall pay, as Additional Rent, Landlord's
actual attorneys' fees for reviewing investigating, processing and/or
documenting any requested assignment or sublease, whether or not Landlord's
consent is granted.

     19.6    Involuntary Transfer.  No interest of Tenant in this Lease shall be
assignable by operation of law, including, without limitation, the transfer of
this Lease by testacy or intestacy.  Each of the following acts shall be
considered an involuntary assignment:

             (a) If Tenant is or becomes bankrupt or insolvent, makes an
assignment for the benefit of creditors, or a proceeding under the Bankruptcy
Act is instituted in which Tenant is the bankrupt;

             (b) Levy of a writ of attachment or execution on this Lease;

             (c) Appointment of a receiver with authority to take possession of
the Premises in any proceeding or action to which Tenant is a party; or

             (d) Foreclosure of any lien affecting Tenant's interest in the
Premises, which lien was not consented to by Landlord pursuant to Section 19.7.
An involuntary assignment shall constitute a Default by Tenant and Landlord
shall have the right to terminate this Lease, in which case this Lease shall not
be treated as an asset of Tenant.

     19.7    Hypothecation.  Tenant shall not hypothecate, mortgage or encumber
Tenant's interest in this Lease or in the Premises or otherwise use this Lease
as a security device in any manner without the consent of Landlord, which
consent Landlord may withhold in its absolute discretion.  Consent by Landlord
to any such hypothecation or creation of a lien or mortgage

                                      18.
<PAGE>

shall not constitute consent to an assignment or other transfer of this Lease
following foreclosure of any permitted lien or mortgage.

SECTION 20.  Successors. Subject to the provisions of Section 19 above, the
covenants, conditions, and agreements contained in this Lease shall be binding
on the parties hereto and on their respective heirs, successors, transferees and
assigns.

SECTION 21.  Exhibits. All Exhibits attached to this Lease shall be deemed to be
incorporated herein by the individual reference to each such Exhibit, and all
such Exhibits shall be deemed to be a part of this Lease as though set forth in
full in the body of the Lease

SECTION 22.  Mutual Waiver. The waiver by Landlord or Tenant of any breach of
any term, covenant or condition herein contained (or the acceptance by either
party of any performance by the other party after the time the same shall become
due) shall not be deemed to be a waiver of such term, covenant or condition or
any subsequent breach thereof or of any other term, covenant or condition herein
contained, unless otherwise expressly agreed to by the waiving or accepting
party in writing.  The acceptance by Landlord of any sum less than that which is
required to be paid by Tenant shall be deemed to have been received only on
account of the obligation for which it is paid (or for which it is allocated by
Landlord, in Landlord's absolute discretion, if Tenant does not designate the
obligation as to which the payment should be credited), and shall not be deemed
an accord and satisfaction notwithstanding any provisions to the contrary
written on any check or contained in any letter of transmittal.  The acceptance
by Landlord or any sum tendered by a purported assignee or transferee of Tenant
shall not be deemed a consent by Landlord to any assignment or transfer of
Tenant's interest herein.  No custom or practice which may arise between the
parties hereto in the administration of the terms of this Lease shall be
construed as a waiver or diminution of either party's right to demand
performance by the other party in strict accordance with the terms of this
Lease.

SECTION 23.  Payment To Real Estate Brokers. Upon the execution of this Lease by
both parties, Landlord shall pay to CPS, the Commercial Property Services
Company, a fee as set forth in a separate written agreement between Landlord and
CPS for brokerage services rendered by said Brokers in connection with this
transaction.

     Landlord and Tenant each represent and warrant to the other that it has had
no dealings with any person, firm, broker or finder other than as named above in
connection with the negotiation of this Lease and/or the consummation of the
transaction contemplated hereby, and that no broker or other person, firm or
entity other than said named Broker is entitled to any commission or finder's
fee in connection with said transaction.  Landlord and Tenant do each hereby
agree to indemnify, protect, defend and hold the other harmless from and against
liability for compensation or charges which may be claimed by such unnamed
broker, finder or other similar party by reason of any dealings or actions of
the indemnifying party, including any costs, expenses, and/or attorneys' fees
incurred with respect thereto.

SECTION 24.  General

     24.1    Captions and Headings. The captions and Section headings used in
this Lease are for convenience of reference only. They shall not be construed to
limit or extend the

                                      19.
<PAGE>

meaning of any part of this Lease, and shall not be deemed relevant in resolving
any question of interpretation or construction of any Section of this Lease.

     24.2    Hazardous Materials.  "Hazardous Materials" as used in this Lease
shall mean any product, substance, chemical, material or waste whose presence,
nature, quantity and/or intensity of existence, use, manufacture, disposal,
transportation, spill, release or effect, either by itself or in combination
with other material expected to be on the Premises, is either: (i) potentially
injuries to the public health, safety or welfare, the environment, or the
Premises; (ii) regulated or monitored by any governmental authority; or (iii) a
basis for potential liability of Landlord to any governmental agency or third
party under any applicable statute or common law theory.  "Hazardous Materials"
shall include, but not be limited to, hydrocarbons, petroleum, asbestos,
radioactive materials, polychlorinated biphenyls, gasoline, crude oil or any
products or by-products thereof.

     24.3    Applicable Requirements.  "Applicable Requirements" shall mean all
laws, rules, regulations, ordinances, directives, covenants, easements and
restrictions of record, permits, and the requirements of any applicable fire
insurance underwriter or rating bureau, relating in any manner to the Premises
(including but not limited to mattes pertaining to (i) industrial hygiene, (ii)
environmental conditions on, in, under or about the Premises, including soil and
groundwater conditions, and (iii) the use, generation, manufacture, production,
installation, maintenance, removal, transportation, storage, spill, or release
or any Hazardous Materials), now in effect or which may hereafter come into
effect.  Tenant shall, within five (5) days after receipt of Landlord's written
request, provide Landlord with copies of all documents and information,
including but not limited to permits, registrations, manifests, applications,
reports and certificates, evidencing Tenant's compliance with any Applicable
Requirements specified by Landlord, and shall immediately upon receipt, notify
Landlord in writing (with copies of any documents involved) of any threatened or
actual claim, notice, citation, warning, complaint or report pertaining to or
involving failure by Tenant or the Premises to comply with any Application
Requirements.

     24.4    Copies. Any executed copy of this Lease shall be deemed an original
for all purposes.

     24.5    Time of Essence.  Time is of the essence as to each and every
provision in this Lease requiring performance within a specific time, except as
to the conditions relating to the delivery of possession of the Premises to
Tenant.

     24.6    Severability.  In case any one or more of the provisions contained
herein shall for any reason be held to be invalid, illegal or unenforceable in
any respect, such invalidity, illegality or unenforceability shall not affect
any other provision of this Lease, but this Lease shall be construed as if such
invalid, illegal or unenforceable provision had not been contained herein.
However, if Tenant's obligation to pay the Rental is determined to be invalid or
unenforceable, this Lease at the option of Landlord shall terminate.

     24.7    Governing Law.  This Lease shall be construed and enforced in
accordance with the laws of the State of California.

                                      20.
<PAGE>

     24.8    Jurisdiction.  The parties hereto subject themselves to the
jurisdiction of, and agree that venue shall be, the State Courts of California
in the County of Alameda.

     24.9    Construction of Lease Provisions. Although printed provisions of
this Lease were prepared by Landlord, this Lease shall not be construed either
for or against Tenant or Landlord, but shall be construed in accordance with the
general tenor of the language to reach a fair and equitable result.

     24.10   Tenant's Financial Statements.  Tenant hereby warrants that all
financial statements delivered by Tenant to Landlord are true, correct, and
complete, and prepared in accordance with generally accepted accounting
principles.  Tenant acknowledges and agrees that Landlord is relying on such
financial statements in accepting this Lease, and that a breach of Tenant's
warranty as to such financial statements shall constitute a Default by Tenant.

     24.11   Withholding of Landlord's Consent.  Notwithstanding any other
provision of this Lease, where Tenant is required to obtain the consent (whether
written or oral) of Landlord to do any act, or to refrain from the performance
of any act, Tenant agrees that if Tenant is in default with respect to any term,
condition, covenant or provision of this Lease, then Landlord shall be deemed to
have acted reasonably in withholding its consent if said consent is, in fact,
withheld.

     24.12   Signs.  Tenant shall not place or permit to be placed, any sign or
decoration in the Parking Areas or the exterior of the Premises, without the
prior written consent of Landlord, which consent may be withheld in Landlord's
absolute discretion, except that Tenant shall be permitted a monument sign and
signage on the front glass doors as outlined on Exhibit C.

     24.13   Surrender of Premises. On the last day of the Lease Term or upon
the sooner termination of this Lease, Tenant shall, to the reasonable
satisfaction of Landlord, surrender the Premises to Landlord in good condition
(reasonable wear and tear excepted), free of Hazardous Materials as required by
Applicable Requirements except as otherwise agreed by the parties. Tenants shall
remove all of Tenant's personal property and trade fixtures from the Premises,
and all property not so removed shall be deemed abandoned by Tenant.
Furthermore, Tenant shall immediately repair all damage to the Premises and
Parking Area caused by any such removal. If the Premises are not so surrendered
at Lease Termination, Tenant shall indemnify Landlord against any loss or
liability resulting from the failure or delay by Tenant in so surrendering the
Premises.

     24.14   Quiet Possession. Landlord covenants and agrees that Tenant, upon
the payment of Rent when and as due, and performing all its covenants and
conditions under the Lease, Tenant shall and may peaceably and quietly have,
hold and enjoy the Premises for the Lease Term, subject, however, to the terms
of this Lease, and of any mortgages or deeds of trust affecting the Premises,
and the rights reserved by Landlord hereunder. Any purchaser upon any
foreclosure or exercise of the power of sale under any mortgage or deed of trust
made by Landlord and covering the Premises to whom Tenant attorns shall be bound
by the terms of this Section 24.15.

                                      21.
<PAGE>

SECTION 25.  Option To Negotiate. If at any time during the Term of tills Lease,
including any Extended Term, Landlord decides to offer for lease additional
space at the present site to unrelated third parties, Landlord shall notify
Tenant of its decision and of the terms, covenants and conditions under which
Landlord is willing to lease such additional space.  Tenant shall have the right
of first negotiation to lease the additional space under such disclosed terms,
covenants and conditions; provided, however, if Tenant and Landlord fail to
reach agreement to lease such additional space within thirty (30) days after
receiving Landlord's written notice, Landlord shall be free to lease such
additional space to any third person or entity under substantially similar
terms, covenants and conditions set forth in Landlord's written notice.

SECTION 26.  No Partnership Or Joint Venture. Nothing in this Lease shall be
construed as creating a partnership or joint venture between Landlord, Tenant,
or any other party, or cause Landlord to be responsible for the debts or
obligations of Tenant or any other party.

SECTION 27.  Standards Of Performance. Tenant acknowledges and agrees with
respect to the Services to be provided by Landlord pursuant to Section 6, and
Landlord's maintenance obligations pursuant to Section 9.1 (collectively
"Services and Maintenance Obligations") that certain events beyond the
reasonable control of Landlord (each a "Force Majeure") may occur (including, by
way of illustration only, acts of God, labor disputes, unavoidable casualties,
and governmental orders or decrees), and that Landlord shall be excused from
performance to the extent that a Force Majeure interrupts, delays, or otherwise
prevents such performance.  Tenant acknowledges that Landlord does not warrant
that the Services and Maintenance Obligations will be free from interruption.
An interruption of Services due to a Force Majeure shall not be deemed an
eviction or disturbance of Tenant's use and possession of the Premises, or any
part thereof, or render Landlord liable to Tenant for damages by abatement of
Rent or otherwise, direct or consequential damages, nor shall any such
interruption relieve Tenant from performance by Tenant of its obligations under
this Lease, except as otherwise provided herein.

SECTION 28.  Entire Agreement. Any agreements, warranties, or representations
not expressly contained herein shall in no way bind either Landlord or Tenant,
and Landlord and Tenant expressly waive all claims for damages by reason of any
statement, representation, warranty, promise or agreement, if any, cancels any
and all previous negotiations, arrangements, brochures, agreements and
understandings, whether written or oral, between Landlord and its agents and
Tenant and its agents with respect to the Premises or this Lease.  This Lease
constitutes the entire agreement between the parties hereto and no addition to,
or modification of, any term or provision of this Lease shall be effective until
and unless set forth in a written instrument signed by both Landlord and Tenant.

SECTION 29.  Authority. The undersigned parties hereby represents and warrants
that they have proper authority and are empowered to execute this Lease on
behalf of the Landlord and Tenant, respectively.

                                      22.
<PAGE>

     In Witness Whereof, the parties have executed this Lease effective as of
the date set forth below.

Exar Corporation                          Asyst Technologies, Inc,
   ("Landlord")                                  ("Tenant")

By:  /s/ Ronald W. Guire                  By:  /s/ Douglas J. McCutcheon
     -----------------------------           ---------------------------------
Ronald W. Guire                           Douglas J. McCutcheon

Title:  Executive VP & CFO                Title: Senior Vice President Chief
        --------------------------               -----------------------------
                                                 Financial Officer
                                                 -----------------------------

Date:  10/18/99                           Date:  10/18/99
       ---------------------------               -----------------------------

                                      23.
<PAGE>

                         Exhibit A through Exhibit A-3

                             [graphics attachment]
<PAGE>

                                   EXHIBIT B

                               Legal Description

     Real property located in the City of Fremont, Alameda County, described as
follows:

     Descriptions of individual parcels before merger:

Parcel 1:     Lot 9, Tract 4642 filed March 10, 198l in Map Book 126 at page 30,
              Alameda County Records, being more particularly described as
              follows:

                   Beginning at the northwest corner of said Lot 9, Tract 4642,
              hereinabove described, said point being on the easterly line of
              Kato Road as shown on said map; thence along said easterly line,
              South 21(degrees)45'17" East 70.60 feet to the beginning of a
              curve concave to the northeast having a radius of 356.02 feet;
              thence southeasterly a length of 556.91 feet along said curve
              through a central angle of 89(degrees)37'33"; thence North
              68(degrees)37'10" East 259.34 feet to the beginning of a curve
              concave to the northwest having a radius of 40.00 feet; thence
              northeasterly along said curve a length of 62.83 feet through a
              central angle of 90(degrees)00'00" to the westerly line of Milmont
              Drive; thence along said westerly line, North 21(degrees)22'50"
              West 160.47 feet to the beginning of a curve concave to the east
              having a radius of 532.00 feet; thence northerly along said curve
              a length of 220.656 feet through a central angle of
              23(degrees)45'52" to the northerly line of said Lot g; thence
              along said northerly line, South 6923'28" West 700.99 feet to the
              said point of beginning of this description, containing 5.76 acres
              of land, more or less.

Parcel 2:     Lot 10, Tract 4642 filed March 10, 1981 in Book 126 at page 30,
              Alameda County Records, being more particularly described as
              follows:

                   Beginning at the southwest corner of said Lot 10, Tract 4642,
              hereinabove described; thence along the southerly line Of said Lot
              10, North 69(degrees)23'28" East 241.44 feet to a point on a curve
              concave to the east having a radius of 532.00 feet to which a
              radial line bears North 87(degrees)36'58" West in the westerly
              line of Milmont Drive, as shown on said map; thence northerly
              along said curve a length of 38.257 feet through a central angle
              of 4(degrees)07'13"; thence North 6(degrees)30'15" East 183.35
              feet to the beginning of a curve concave to the west having a
              radius of 468.00 feet; thence northerly along said curve a length
              of 215.65 feet through a central angle of 26(degrees)24'03" to the
              northerly line of said Lot 10; thence along said northerly line,
              South 68(degrees)37'10" West 398.01 feet to the westerly line of
              said Lot 10; thence along said westerly line. South
              21(degrees)22'50" East 400.00 feet to the said point of beginning
              of this description, containing 3.11 acres of land, more or less.

                                                                   Asyst: ______
                                                                   Exar: _______
<PAGE>

Parcel 3:   Lot 17, Tract 4642 filed March 10, 198l in Book 126 at page 30,
            Alameda County Records, being more particularly described as
            follows:

               Beginning at the northwest corner of said Lot 17, Tract 4642,
            hereinabove described, said point being on the easterly line of Kato
            Road as shown on said map; thence along said easterly line, South
            20(degrees)36'32" East 29.68 feet to the beginning of a curve
            concave to the east having a radius of 3960.23 feet; thence
            southerly along said curve a length of 79.20 feet through a central
            angle of 1(degrees)08'45"; thence South: 21(degrees)45'17" East
            291.15 feet to the southerly line of said Lot 17; thence along said
            southerly line, North 69(degrees)23'28" East 459.55 feet to the
            easterly line of said Lot 17; thence along said easterly line; North
            21(degrees)22'50" West 400.00 feet to the said northerly line of
            said Lot 17; thence along said northerly line, South
            69(degrees)23'28'' West 460.78 feet to the said point of beginning
            of this description, containing 4.23 acres of land, more or less.

             Description of parcels as merged under this document:

                                    Parcel I

     Real property located in the City of Fremont, Alameda County, described as
follows:

     Lots 9, 10 and 17, Tract 4642, filed March 10, 1981, Map Book 126, page 30,
Alameda County Records, being more particularly described as follows:

     Beginning at the northwest corner of said Lot 9, Tract 4642, hereinabove
described, said point being on the easterly line of Kato Road as shown on said
map; thence along said easterly line, South 21'45'17" East 70.60 feet to the
beginning of a curve concave to the northeast having a radius of 356.02 feet;
thence southeasterly a length of 556.91 feet along said curve through a central
angle of 89(degrees)37'33"; thence North 68(degrees)37'10" East 259.34 feet to
the beginning of a curve concave to the northwest having a radius of 40.00 feet;
thence northeasterly along said curve a length of 62.83 feet through a central
angle of 90(degrees)00'00" to the westerly line of Milmont Drive; thence along
said westerly line, North 21(degrees)22'50" West 160.47 feet to the beginning of
a curve concave to the east having a radius of 532.00 feet; thence northerly
along said curve a length of 258.91 feet; thence North 6(degrees)30'15" East
183.35 feet to the beginning of a curve concave to the west having a radius of
468.00 feet; thence northerly along said curve a length of 215.65 feet through a
central angle of 26(degrees)24'03" to the northerly line of said Lot 10; thence
along said northerly line, South 68(degrees)37'10" West 398.01 feet; thence
along the northerly line of said Lot 17, South 69(degrees)23'28" West 460.78
feet to the easterly line of Kato Road; thence along said easterly line, South
20(degrees)36'32" East 29.68 feet to the beginning of a curve concave to the
east having a radius of 3960.23 feet; thence southerly along said curve a length
of 79.20 feet through a central angle of 1(degrees)08'45"; thence South
21(degrees)45'17" East 291.15 feet to the said point of beginning of this
description. containing 13.1 acres of land, more or less.

                                                                  Asyst: _______
                                                                  Exar: ________
<PAGE>

                                   Exhibit C

                             [graphics attachment]

                                                                   Asyst: ______
                                                                   Exar: _______<PAGE>

EXHIBIT 10.1
------------

CONFIDENTIAL TREATMENT HAS BEEN REQUESTED WITH RESPECT TO THE PORTIONS OF THE
AGREEMENT INDICATED WITH AN ASTERISK (*). A COMPLETE COPY OF THIS AGREEMENT,
INCLUDING THE REDACTED TERMS, HAS BEEN SEPARATELY FILED WITH THE SECURITIES &
EXCHANGE COMMISSION.

                      OBJECTIVE SYSTEMS INTEGRATORS, INC.
                       ENTERPRISE-WIDE LICENSE AGREEMENT

                            Contract No.: ELA - 321

THIS ENTERPRISE-WIDE LICENSE AGREEMENT ("Agreement") is entered into as of
December 20, 1999 ("Effective Date"), between OBJECTIVE SYSTEMS INTEGRATORS,
INC. ("OSI") and ADELPHIA COMMUNICATIONS CORPORATION ("Adelphia").

1.   DEFINITIONS
     -----------

     (a)  Application Component. OSI Software, other than NetExpert Framework
          ---------------------
          Software, licensed as a single off-the-shelf application component
          (such as FM Exel(TM)), including only those off-the-shelf Rulesets
          provided as part of the application component.

     (b)  Combined Software. Computer code, modules, programs, data files or
          -----------------
          rules, including related documentation, resulting from (1) some or all
          of the same being linked, combined or otherwise operated with OSI
          Software, or (2) Licensee's modification of OSI Software.

     (c)  Documentation. User manuals and similar documentation supplied with
          -------------
          OSI Software. Documentation does not include product and service
          descriptions, advertising or marketing materials.

     (d)  Information. Written, machine-reproducible and visual materials that
          -----------
          are described in this Agreement, or are clearly marked when disclosed,
          as being confidential, together with all written, visual and oral
          materials so identified in writing within 30 days after their
          disclosure.

     (e)  Installation Date. The business day after OSI Software is delivered to
          -----------------
          Licensee.

     (f)  Licensee. Adelphia and those of its Related Entities who affirmatively
          --------
          avail themselves of the benefits of this Agreement by executing and
          delivering either an acknowledgment in the form of Exhibit 2 or an
          Order in the form of Exhibit 2a. Adelphia will be jointly and
          severally liable for the obligations of any Related Entity under this
          Agreement.

     (g)  Licensee Software. Computer code, modules, programs, data files or
          -----------------
          rules, including related documentation, owned or licensed by a third
          party to Licensee and designed to be linked, combined or otherwise
          operated with OSI Software to augment or enhance it. Licensee Software
          excludes OSI Software.

     (h)  NetExpert Framework Software. The OSI Software listed in OSI's
          ----------------------------
          published and generally available Product List, as from time to time
          in effect, as part of the NetExpert(R) network management Framework.

     (i)  OSI Software. Computer code, modules, programs, data files and rules
          ------------
          that are listed as OSI Software in Exhibit 1, or that are provided to
          Licensee by OSI in connection with the Services. OSI Software will
          also include Documentation.

     (j)  Related Entity. A corporation or other legal entity that directly or
          --------------
          indirectly, through one or more intermediaries, controls, is
          controlled by, or is under common control with, Adelphia. For purposes
          of the foregoing, the terms "control," "controlled by" and "under
          common control with" will mean the possession,

                                                                          Page 1
<PAGE>

          directly or indirectly, of the power to direct or cause the direction
          of the management and policies of the entity, whether through
          ownership of voting securities, by contract or credit arrangement, as
          trustee or executor, or otherwise.

     (k)  Ruleset. A group of instructions which, when taken as a whole,
          -------
          constitute a decision-making matrix that directs the functions of
          NetExpert Framework Software for a specific network element,
          management operation or other application.

     (l)  Services. The update and support services described in Exhibit 3.
          --------

     (m)  Vendor. A third party that directly or indirectly provides software
          ------
          embedded in OSI Software.

2.   FEES, PAYMENT
     -------------

     (a)  Fee. Licensee will pay the fees set forth in Exhibit 1. Licensee will
          ---
          be invoiced for payment, and payment will be made, as set forth in
          Exhibit 1.

     (b)  Payments. Payment will be in immediately available funds, without
          --------
          withholding for Taxes or other amounts. Amounts not paid when due will
          accrue interest at the lesser of 1.5% per month or the highest rate
          permitted by applicable law, and Licensee will reimburse OSI for all
          fees, costs and expenses (including attorneys' fees and court costs)
          incurred to collect such amounts. Amounts billed by OSI become final
          unless disputed within 45 days after the date of OSI's invoice.

     (c)  Taxes, Charges. Fees are exclusive of, and Licensee will pay, all
          --------------
          sales, value-added, withholding or excise taxes, and other government
          fees and charges of any nature whatsoever other than taxes on the
          income of OSI ("Taxes"). If Licensee is required to make any tax or
          other withholding on or in relation to payments otherwise due under
          this Agreement, it will be in addition to the amounts otherwise due.
          Taxes paid or payable by OSI will be invoiced to and paid by Licensee.
          Fees are quoted inclusive of, and Licensor will pay, applicable
          freight and insurance charges. Licensee will not be required to pay
          any sum to OSI under this subsection unless OSI (1) has actually paid
          or intends in good faith to pay an equal sum to a governmental entity,
          and (2) in good faith believes that applicable law requires the
          payment.

     (d)  Audits. On reasonable notice, OSI may inspect Licensee's facilities
          ------
          (including computers) and records to verify Licensee's proper use of
          all OSI Software. Licensee will keep records regarding its use of the
          OSI Software in sufficient detail to permit that verification. Audits
          will be made, if at all, only in connection with (1) the termination
          or non-renewal of this Agreement, (2) the termination or non-renewal
          of any license under this Agreement, or (3) use by a Related Entity in
          connection with that Related Entity ceasing to be a Related Entity as
          defined in this Agreement.

3.   ORDERS, DELIVERY, TITLE, RISK OF LOSS
     -------------------------------------

     (a)  Orders. Licensee will use the Order form attached as Exhibit 2a to
          ------
          acquire any additional copies of OSI Software under this Agreement. If
          Licensee modifies this form or submits a different form, OSI may
          accept the Order but will not be bound to any additional or different
          terms. If Licensee is in then breach of this Agreement, OSI may delay
          shipment or cancel an outstanding Order, even if already accepted.
          Otherwise, all Orders will be filled and are included within the
          license fees set forth in Exhibit 1.

     (b)  Shipment. OSI will pack and ship OSI Software according to its
          --------
          standard practice, F.O.B. factory, with freight and insurance prepaid
          by OSI. Licensee will not acquire title to OSI Software. Risk of loss
          will pass to Licensee when OSI Software is placed on board a carrier
          at OSI's facility.

4.   TERM, TERMINATION
     -----------------

     (a)  Term. This Agreement will commence on the Effective Date, will remain
          ----
          in effect for 60 months ("Initial Term").

     (b)  First Option to Renew. Provided Licensee is not then in breach of this
          ---------------------
          Agreement, Licensee will have the option to extend the Initial Term
          for an additional, fixed 60 month period ("First Renewal Term"). The
          fees

                                                                          Page 2
<PAGE>

          that will apply during the First Renewal Term will be as set forth in
          Exhibit 1. Notice of Licensee's election so to extend must be given to
          OSI not less than three months before the end of the Initial Term.

     (c)  Second Option to Renew. Provided Licensee is not then in breach of
          ----------------------
          this Agreement, Licensee will have the option to extend the First
          Renewal Term, in one or more fixed increments of 12 months each, for
          up to a total of an additional 60-month period following the
          expiration of the First Renewal Term ("Second Renewal Term"). The fees
          that will apply during the Second Renewal Term will be as set forth in
          Exhibit 1. Notice of Licensee's election so to extend must be given to
          OSI not less than three months before the end of the First Renewal
          Term and/or not less than 60 days before the end of any 12-month
          renewal period, as applicable.

     (d)  Termination of Agreement. This Agreement may be terminated (1) by
          ------------------------
          either party on breach by the other party remaining uncured 60 days
          after notice specifying the breach with particularity, or (2) by
          notice if the other party becomes insolvent, bankrupt or makes an
          assignment for the benefit of creditors.

                                                                          Page 3
<PAGE>

     (e)  Effect of Non-Renewal. If Licensee elects not to renew this Agreement
          ---------------------
          under Sections 4(b) or 4(c), as applicable, then not less than 60 days
          before the expiration of this Agreement, the parties will meet to (1)
          determine the scope of Licensee's then-current use of the OSI
          Software, and (2) agree pricing that will apply to Licensee's
          continued use, if any, of the OSI Software. Absent agreement, pricing
          for continued use of the OSI Software, which will be on a month-to-
          month basis for not more than 12 months and will be set, at the
          prorated portion of the fees that would otherwise have been in effect
          during the period of the month-to-month extension had the Agreement
          not then expired. Licensee may elect not to receive Services for the
          OSI Software during this month-to-month extension period and, if
          Licensee so elects, the fees otherwise applicable to that period will
          be decreased to reflect the absence of Services.

     (f)  Termination of Licenses. The licenses granted in Section 5 will
          -----------------------
          terminate on the earliest of the following to occur: (1) termination
          of this Agreement by OSI under Section 4(d), (2) as to any Related
          Entity, (a) six months following the date the entity ceases being a
          Related Entity if the entity has independently entered into a direct
          contract with OSI obligating it to observe all of the terms and
          conditions of this Agreement and limiting its use of the OSI Software
          to those uses in effect immediately prior to the date it ceased to be
          a Related Entity, or (b) on the date the entity ceases being a Related
          Entity if it has not entered into such a direct contractual
          relationship with OSI, (3) a violation by Licensee of Sections 5(i) or
          5(k), or (4) notice from Licensee. On termination of a license,
          Licensee will immediately destroy or return to OSI all copies of the
          OSI Software covered by that license that are then in its possession
          or under its control. Except as may be negotiated between the parties
          pursuant to Section 4(e), Licensee will have no continuing rights to
          the OSI Software, whether alone or as part of Combined Software.

     (g)  Survival. On expiration or termination of this Agreement, the
          --------
          obligations of Licensee to pay amounts owed to OSI and to discharge
          any liability incurred before expiration or termination will survive,
          together with the provisions of Sections 2, 4, 5, and 7 - 11.

5.   LICENSES
     --------

     (a)  General. This Section sets forth the rights granted to Licensee for
          -------
          the OSI Software. Except for Rulesets that are provided in NetExpert's
          4GL programming language, Licensee will receive only an object code
          license for OSI Software.

     (b)  License Grant. OSI grants Licensee and Licensee accepts a personal,
          -------------
          non-transferable, non-exclusive license, without the right to
          sublicense, to load, install, execute, display and store OSI Software,
          solely for Licensee's internal use, and to use the Manuals for that
          purpose. Licensee may also (1) modify rules and data files included in
          OSI Software, and (2) modify OSI Software, link, combine or otherwise
          operate OSI Software with Licensee Software and use the resulting
          Combined Software solely for Licensee's internal use. No other rights
          are granted to Licensee.

     (c)  Term, Limitations. The license granted in Section 5(b) will continue
          -----------------
          until terminated under Section 4(d). Licensee will not, nor will it
          permit others to, use OSI Software to develop code, objects, modules
          or programs that modify or substitute for code, objects, modules or
          programs in the OSI Software. OSI and its Vendors retain title to and
          all legally protected rights in all OSI Software, subject only to the
          licenses granted under this Agreement. OSI Software may contain
          authorization codes and/or lockout software to restrict its operation
          to properly licensed uses.

     (d)  Intellectual Property. OSI Software is copyrighted. Licensee will not
          ---------------------
          copy, alter, adapt, modify or make derivative works of OSI Software
          except as expressly permitted by this Section. Licensee may make a
          reasonable number of backup and archival copies of OSI Software,
          provided that all copyright, patent, trademark and other proprietary
          notices on and in the OSI Software is simultaneously copied. Licensee
          may make a reasonable number of copies of Documentation for its
          internal use only. Licensee will not alter or remove any copyright,
          patent, trademark or other proprietary notice from the OSI Software or
          Documentation. OSI Software may contain processes and techniques that
          are protected by patents. No license to use these processes and
          techniques apart from the OSI Software is granted.

     (e)  Trademarks and Tradenames. Licensee will not acquire any right to the
          -------------------------
          trademarks or tradenames of OSI and its Vendors. Licensee will not
          use, apply to register or register a trademark or tradename that is
          the same

                                                                          Page 4
<PAGE>

          as or confusingly similar to any used by OSI or a Vendor. OSI will not
          use, apply to register or register a trademark or tradename that is
          the same as or confusingly similar to any used by Licensee.

     (f)  Temporary or Replacement Use. Temporarily or permanent transfers of
          ----------------------------
          OSI Software to another computer may be made, without charge. In
          either case, Licensee will need to provide notice to OSI and obtain
          the requisite authorization codes before the transfer is made.

     (g)  Reverse Engineering. Licensee will not, and waives to the fullest
          -------------------
          extent permitted by law any right to, reverse engineer, decompile,
          disassemble or otherwise attempt to derive the source code for or
          operation of OSI Software, or to decode, de-encrypt or engineer around
          any authorization codes, lockout software or other security measures
          contained in the OSI Software.

     (h)  Use of Products to Provide Third Party Services. Except as otherwise
          -----------------------------------------------
          expressly permitted by the terms of this Agreement, Licensee will not
          use OSI Software to provide network management or operations support
          services to a third party other than to a Related Entity, whether on
          its own network, through its own network elements, on the network of a
          third party, through the network elements of a third party, or
          otherwise.

     (i)  Transfers. Licensee will not rent, license, sell or otherwise transfer
          ---------
          any portion of the OSI Software. Any purported transfer will be void,
          will be a breach of this Agreement and will cause the licenses granted
          in this Agreement to automatically terminate.

     (j)  Reservation of Rights. Except as set forth in this Agreement, OSI
          ---------------------
          reserves to itself and Vendors all rights to engage in activities
          which, absent a grant of rights, would give rise to liability for
          infringement of intellectual or intangible property rights.

     (k)  *

6.   OTHER MATTERS
     -------------

     (a)  Installation and Acceptance. OSI will not be responsible for
          ---------------------------
          installation, post-installation testing, management or control of the
          OSI Software. OSI Software will be accepted if it performs
          substantially as described in its Documentation as in effect at the
          time(s) of delivery.

     (b)  Documentation. Adelphia will be provided with 20 hard copies of OSI's
          -------------
          standard Documentation for all Licensed Software, together with one
          electronic version to the extent available. These copies will be
          provided within 30 days after the execution and delivery of this
          Agreement. Updates to Documentation will be provided, as above, if and
          when they are generally made available.

     (c)  Services. Exhibits 1 and 3 contain the terms under which OSI will
          --------
          provide Services to Licensee.

     (d)  *

     (e)  Escrow. OSI is a party to an escrow agreement ("Escrow Agreement") in
          ------
          the form attached as Exhibit 5. Within 30 days after this Agreement
          has been executed and delivered, OSI will register Licensee as a
          beneficiary of the Escrow Agreement, provide Licensee with a copy of
          the Escrow Agreement and provide Licensee verification that it is so
          registered. Licensee will bear all costs for being added as a
          beneficiary to the Escrow Agreement. OSI will have the right to change
          to a successor escrow agent with the consent of Licensee, which will
          not be unreasonably withheld. Throughout the Term, OSI will update its
          Deposit Account under the Escrow Agreement on the earlier of once per
          calendar quarter or, in respect of any particular item of OSI
          Software, on OSI's issuance of a point release for that item if the
          release occurs between OSI's normal quarterly updates, as applicable.

     (f)  Standards Compliance. During the Term, OSI will remain compliant with
          --------------------
          all industry standards that it reasonably believes should be
          applicable to the OSI Software. Examples of standards to which OSI
          currently complies are SNMPv3, CMIP, CORBA, TNM, NMF, ESQL, UML and
          EJB.

     (g)  *

     (h)  Customer Advisory Board. For so long as this Agreement remains in
          -----------------------
          effect, Adelphia will have the option of becoming a member of OSI's
          Customer Advisory Board ("CAB"). Attached as Exhibit 6 is a copy of
          OSI's standard terms applicable to CAB membership, and Adelphia agrees
          to be bound by those terms in

                                                                          Page 5
<PAGE>

          connection with that membership.

     (i)  *

     (j)  *

7.   OWNERSHIP, PROPRIETARY RIGHTS
     -----------------------------

     (a)  Ownership. All right, title and interest to copyrights, trade secrets,
          ---------
          patents and other intellectual property rights (1) in the OSI Software
          will remain the exclusive property of OSI and its Vendors, as
          applicable, and (2) in Licensee Software will remain the exclusive
          property of Licensee. For Combined Software, the parties will each
          retain full and exclusive rights to those portions of their respective
          software that are incorporated into the Combined Software. Combined
          Software will not be a joint work, and on termination of the License
          to OSI Software included in Combined Software, Licensee's right to use
          that OSI Software will terminate, even as part of Combined Software,
          and OSI's right to use Licensee Software will terminate, even as a
          part of Combined Software.

     (b)  Proprietary Rights. All aspects of OSI Software, including programs,
          ------------------
          methods of processing, program design and structure, the interaction
          and unique programming techniques they employ, and their screen
          formats, are Information and will (1) remain the exclusive property of
          OSI or its Vendors, (2) not be used except as permitted by this
          Agreement, and (3) not be disclosed or otherwise communicated by
          Licensee, directly or indirectly, to anyone except as permitted by
          this Agreement.

8.   WARRANTIES
     ----------

     (a)  Limited Warranty. OSI warrants that:
          ----------------

          (1)  Except as set forth in Exhibit 3, each NetExpert Framework
               Software will operate substantially as described in its
               Documentation for one year after, and all other OSI Software will
               operate substantially as described in the Documentation
               accompanying the OSI Software, for 90 days after, a physical copy
               of the OSI Software is first delivered to Licensee.

          (2)  All OSI Software will function, in its normal operation, as
               follows: (1) values for current dates before, during and after
               the Year 2000 will not cause interruptions in normal operation,
               except that because of UNIX limitations, current dates greater
               than or equal to 2038 cannot be supported on 32 bit machines, or
               64 bit machines using 32 bit dates, (2) manipulations of date-
               related data will produce desired results before, during and
               after the year 2000 and management of stored dates greater than
               or equal to 2038 will not cause problems on 32 bit machines, (3)
               date elements in interfaces and data storage will permit
               specification of century to eliminate date ambiguity, (4) for any
               date element represented without century, two digit years greater
               than or equal to 69 will convert to 19xx and two digit years less
               than 69 will convert to 20xx, and (5) leap years will be properly
               processed and recognized. No warranty is provided for any date
               related problems caused by Vendor Software, or by any other
               software or any hardware connected to OSI Software.

          (3)  OSI Software does not and will not contain any "Self-Help Code"
               or any "Unauthorized Code." As used in this Agreement, "Self-Help
               Code" includes any backdoor, time bomb, drop dead device or other
               software routine designed to disable a computer program
               automatically with the passage of time or under positive control
               of a person other than Licensee, but does not include any (a)
               authorization keys or other code designed to limit use of the OSI
               Software to specific purposes or on specific equipment, or (b)
               software routines designed to permit OSI (or any other person
               acting on authority of OSI) to obtain access to Licensee's
               computer systems (e.g., remote access via modem) for purposes of
               authorized maintenance or technical support. "Unauthorized Code"
               means any virus, Trojan Horse, worm or other software routines
               designed to permit unauthorized access or to disable, erase or
               otherwise harm software, hardware or data. The term "Unauthorized
               Code" does not include Self-Help Code.

     (b)  Modifications and Vendor Software. OSI makes no warranty as to any
          ---------------------------------
          portion of OSI Software that is modified, altered or combined with any
          other software, such as Rulesets, and as to any of the related

                                                                          Page 6
<PAGE>

          Documentation provisions, unless the modifications, alterations or
          combinations have been performed by or with the prior, written
          approval of OSI.

     (c)  Pre-Release OSI Software. Licensee may request copies of Pre-Release
          ------------------------
          OSI Software (such as "alpha" or "beta" versions of new or existing
          OSI Software) as an accommodation for Licensee's evaluation, comment
          and familiarization. Pre-Release OSI Software is provided without
          warranty of any nature but the provisions of Section 10 will apply.
          Pre-Release OSI Software may contain bugs and inoperable features that
          may not be corrected. OSI may change Pre-Release OSI Software
          significantly before commercial release, or even not produce a
          commercial product based on Pre-Release OSI Software.

     (d)  Warranty Limitations. EXCEPT AS OTHERWISE SET FORTH IN EXHIBIT 3, THIS
          --------------------
          SECTION STATES THE EXCLUSIVE WARRANTIES FOR OSI SOFTWARE. EXCEPT FOR
          THOSE WARRANTIES, OSI SOFTWARE IS PROVIDED "AS-IS." NO OTHER WARRANTY,
          ORAL OR WRITTEN, IS EXPRESSED OR IMPLIED. OSI does not warrant that
          the OSI SOFTWARE will (1) meet Licensee's requirements, (2) perform in
          ANY operating environment OTHER THAN THE ONE SET FORTH IN ITS
          DOCUMENTATION, OR (3) be uninterrupted or error free in ITS operation.
          OSI does not warrant that any defect or malfunction CAN OR WILL BE
          corrected. IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
          PARTICULAR PURPOSE ARE SPECIFICALLY DISCLAIMED. The limited warranties
          in this Section will not apply to, and OSI will have no warranty
          obligation with respect to, any defect or malfunction (1) that results
          from improper modification or use by Licensee, from hardware,
          software, interfacing or supplies other than those provided by OSI in
          the form provided by OSI, or from any cause other than ordinary use,
          or (2) where the nonconformity cannot be reproduced, where OSI is not
          provided with a the parameters, procedures or conditions which
          generate the problem in sufficient detail to permit it to isolate the
          code which causes the problem, or where OSI is not provided with all
          data files, rules, Licensee Software and system access necessary to
          reproduce and analyze the problem.

9.   LIMITATIONS, REMEDIES
     ---------------------

     (a)  Exclusive Remedies. Licensee's sole remedy for a breach of the limited
          ------------------
          warranty in Section 8(a) will be for OSI to use its commercially
          reasonable efforts to restore the OSI Software to substantially
          conforming condition under the terms of Exhibit 3 or, if OSI is unable
          after such efforts to restore the OSI Software, then for Licensee to
          obtain a refund equal to the depreciated value of the non conforming
          OSI Software (based on a 48 month life beginning on its date of
          delivery) on its return to OSI.

     (b)  Aggregate Liability. NEITHER PARTY WILL BE LIABLE TO THE OTHER PARTY
          -------------------
          FOR DAMAGES IN EXCESS OF THE TOTAL AMOUNTS TO BE PAID TO OSI UNDER
          THIS AGREEMENT. THIS LIMITATION WILL (1) APPLY REGARDLESS OF THE FORM
          OF ACTION, WHETHER CONTRACT OR TORT, INCLUDING NEGLIGENCE AND STRICT
          LIABILITY, AND (2) NOT APPLY TO INDEMNITY UNDER SECTION 10, TO A
          BREACH OF SECTIONS 5,7, 10 OR 11(A), OR TO LIABILITY FOR REAL PROPERTY
          DAMAGE, DEATH OR BODILY INJURY CAUSED BY THE GROSS NEGLIGENCE OR
          WILLFUL MISCONDUCT OF OSI OR ITS VENDORS.

     (c)  Damages. NEITHER PARTY WILL BE LIABLE, REGARDLESS OF THE FORM OF
          -------
          ACTION, FOR LOST DATA, REVENUES, PROFITS OR SAVINGS, OR FOR INDIRECT,
          CONSEQUENTIAL, INCIDENTAL, SPECIAL OR PUNITIVE DAMAGES, EVEN IF THE
          PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF THE DAMAGES. THIS
          LIMITATION WILL NOT APPLY TO A BREACH OF SECTION 11(a).

10.  INFRINGEMENT INDEMNITY
     ----------------------

     (a)  Indemnification by OSI.
          ----------------------

          (1)  So long as Licensee complies with the terms of Sections 5 and 7
               of this Agreement, OSI will defend Licensee against any claims,
               and indemnify and hold Licensee harmless against any judgments,
               directly

                                                                          Page 7
<PAGE>

               or indirectly resulting from a claimed infringement or violation
               of any copyright, patent, trademark, trade secret or other
               intellectual property right with respect to OSI Software. OSI
               will have no liability for any such claims or judgments based
               solely on (a) the actions of Licensee, its employees or agents,
               (b) use of a version, modification or adaptation of OSI Software,
               if the infringement would have been avoided by the use of a then-
               current unaltered release of OSI Software, (c) use of Combined
               Software, if OSI Software operated independent of the Combined
               Software is not the cause of the infringement, or (d) use of OSI
               Software in combination with any computer software, hardware or
               data not delivered in that combination by OSI or expressly
               approved, in writing to Licensee, for use in that combination by
               OSI.

          (2)  On receiving notice of a claimed infringement, OSI may (a) settle
               on terms that permit continued use of OSI Software, (b)
               discontinue distribution of the OSI Software that is the cause of
               the claim and provide a reasonable substitute for OSI Software
               without any decrease in functionality, (c) modify OSI Software to
               be non-infringing, or (d) if the foregoing remedies are not
               reasonably available, grant Licensee a credit for the depreciated
               value of the relevant portion of OSI Software (based on a 48
               month life beginning on the date of its delivery) and accept its
               return.

          (3)  THIS SECTION PROVIDES LICENSEE'S SOLE REMEDY FOR INFRINGEMENT OF
               PATENTS, COPYRIGHTS OR OTHER INTELLECTUAL PROPERTY RIGHTS.

     (b)  Indemnification by Licensee. Licensee will defend OSI and its Vendors
          ---------------------------
          against any claims, and indemnify and hold OSI and its Vendors
          harmless against any judgments, directly or indirectly resulting from
          any claimed infringement or violation of any copyright, patent or
          other intellectual property right with respect to the OSI Software to
          the extent that Licensee Software or any of the acts described in
          Section 10(a)(1)(a) - (d) is the cause of the claimed infringement or
          violation.

     (c)  Cooperation. Notwithstanding the above, an indemnifying party is under
          -----------
          no obligation to defend or indemnify another party unless: (1) the
          indemnifying party has been promptly notified of the claim or suit and
          furnished with a copy of each pleading, communication, notice and
          other action relating to the claim or suit; (2) the indemnified party
          permits the indemnifying party, at the indemnifying party's expense,
          to assume sole authority to conduct the trial or settlement of the
          claim or suit and any negotiations related to it; and (3) the
          indemnified party promptly provides all information and assistance
          reasonably requested by the indemnifying party in connection with the
          claim or suit.

11.  GENERAL
     -------

     (a)  Confidential Information. In the course of their dealings, each party
          ------------------------
          will acquire Information about the other, including Information
          regarding business activities and operations, technical information
          and trade secrets of the party and its partners. Each party will hold
          in confidence any Information that it receives from the other party,
          not use that Information for purposes other than performance of this
          Agreement and not disclose the Information except to those employees
          and advisors who (1) have a need to know the same, and (2) are bound
          by law or have agreed in writing to maintain the Information in
          confidence. Information includes all nonpublic aspects of the OSI
          Software, including programs, methods of processing, program design
          and structure, the interaction and unique programming techniques
          employed, and performance data and test results. The term
          "Information" also includes the nonpublic plans of OSI and Vendors for
          new products and services, product improvements and marketing
          strategies. If a party discovers Information has been improperly used,
          disseminated or published, it will immediately notify the other party
          and take all reasonable actions to minimize the impact of the
          disclosure.

     (b)  Excluded Information. Even if marked as confidential, the obligations
          --------------------
          in Section 11(a) will not apply to Information generally available to
          or known to the public, known by the receiving party without
          obligation of confidentiality before the negotiations leading to this
          Agreement, independently developed by the receiving party outside the
          scope of this Agreement, lawfully disclosed to the receiving party
          without restriction by a third party having the right to make the
          disclosure or required to be publicly disclosed to a tribunal. In the
          case of required disclosures to tribunals, the receiving party will
          promptly notify the other party of the proceeding and fully assist the
          disclosing party to obtain protective orders maintaining the
          confidentiality of the Information.

                                                                          Page 8
<PAGE>

     (c)  Compliance with Export and Other Laws. OSI Software and all related
          -------------------------------------
          rights, technical data and information are subject to export controls
          imposed by the U.S. Government. Licensee will not transmit any OSI
          Software or information relating to OSI Software outside of the United
          States or to any person or entity prohibited by the U.S. Government,
          whether by name, by citizenship, residency or otherwise, and will
          comply with all applicable export control restrictions. Each party, at
          its expense, will comply with all applicable laws, regulations, codes
          and ordinances. Neither party will be bound by any provision of this
          Agreement to the extent, but only to the extent, that it violates
          applicable law.

     (d)  Notices. Notices, consents, approvals and communications given under
          -------
          this Agreement will be (1) in writing, (2) in the English language,
          (3) sent by registered or certified mail, return receipt requested,
          postage prepaid, or by a courier service that obtains signed
          acknowledgement of receipt, to the address indicated below the
          signature block of this Agreement or to such other address as the
          affected party designates by prior notice, and (4) effective on the
          date received unless a later date is otherwise indicated in the
          notice, consent or communication.

     (e)  Assignment. This Agreement is not assignable, including by operation
          ----------
          of law, by either party, either in whole or in part, without the prior
          consent of the other party, which consent will not be unreasonably
          withheld; provided, however, that OSI may assign this Agreement
          without such consent in connection with any merger, acquisition or
          other combination with or by OSI, or in connection with the sale of
          all or substantially all of OSI's assets, whether directly or
          indirectly, provided the surviving entity or the acquiror of those
          assets, as applicable, agrees in writing to be bound by all of the
          terms and conditions of this Agreement. This Agreement will be binding
          on and inure to the benefit of the parties and their respective
          successors and permitted assigns.

     (f)  Governing Law. This Agreement will be governed by and construed in
          accordance with the internal substantive laws of the State of
          California, excluding its choice of law principles. The United Nations
          Convention on Contracts for the International Sale of Goods will not
          apply.

     (g)  Arbitration. Any dispute, controversy or claim arising out of or
          -----------
          relating to this Agreement will be finally resolved by binding
          arbitration under the Rules of Arbitration of the American Arbitration
          Association in effect at the time of the arbitration ("AAA Rules").

          (1)  The venue of the arbitration will be Dallas, Texas. All
               proceedings will be conducted in English and English translations
               of all foreign language documents filed, submitted or exchanged
               during the proceedings will be supplied concurrently by the
               producing party. On reasonable notice to the other party and the
               arbitration panel, parties will be entitled to use expert and
               rebuttal witnesses.

          (2)  Each party will pay its own fees and expenses incurred in
               connection with the arbitration. Common expenses of the
               arbitration (such as the fees and expenses of the arbitrator)
               will be borne by the parties in such amounts or proportions as
               the arbitrator may determine.

          (3)  The award of the arbitrator will be (a) in writing (including
               reasons), and (b) final and binding on the parties. Judgment upon
               the award may be entered and enforced by any court of competent
               jurisdiction.

          (4)  In no event will the arbitrator award damages that are not
               permitted under the express terms of this Agreement.

          (5)  Without prejudice to the AAA Rules, either party may apply to any
               court of competent jurisdiction for such interim relief as it
               considers appropriate, without the need to post bond or other
               security, or if required, then the minimum bond or other security
               permitted.

     (h)  Equitable Relief. Any breach of a party's obligations with respect to
          ----------------
          intellectual property rights will cause irreparable injury for which
          there are no adequate remedies at law. The aggrieved party will be
          entitled to equitable relief in addition to all other remedies that
          may be available, without the posting of bond or other security, or if
          required, then the minimum bond or security so required.

     (i)  Force Majeure. Neither party will be liable or held in default for a
          -------------
          failure or delay in performing its obligations under this Agreement,
          other than to make payment for amounts owing or to comply with
          Sections 5 and 7, due to any cause beyond its reasonable control, so
          long as the party takes all reasonable steps to avoid and minimize the
          impact of such cause. A party suffering an event of force majeure will
          notify the other party

                                                                          Page 9
<PAGE>

          as promptly as is reasonably possible regarding the nature of the
          event and its estimate of when the event will no longer apply.

     (j)  Entire Agreement. This Agreement and the Enterprise Professional
          ----------------
          Services Agreement of even date between the parties, including their
          respective Exhibits, constitutes the entire agreement between the
          parties regarding its subject matter and supersedes all prior
          communications, both oral and written, between the parties. Except as
          set forth in Section 11(k), this Agreement may not be modified, and no
          rights will be waived, except by an instrument in writing signed by a
          duly authorized representative of both parties. If the terms of this
          Agreement conflict with the terms of any of its Exhibits, the Exhibits
          will prevail. As used in this Agreement, the term "including" means by
          way of example and not limitation.

     (k)  Modifications to Exhibits. OSI may change Exhibits 3, 4 and 6 to this
          -------------------------
          Agreement by notice to Licensee at least 30 days in advance of the
          change. Any change to an Exhibit will reflect the same terms as OSI
          may from time to time generally make available to its customer base.

     (l)  Waivers. No waiver by a party of a breach of this Agreement will
          -------
          constitute a waiver of any other breach of the same or any other
          provision of this Agreement.

     (m)  Execution. This Agreement may be executed in multiple counterparts,
          ---------
          each of which will be deemed an original and all of which will
          constitute together one agreement. A counterpart delivered to a party
          by facsimile or similar electronic means will be deemed an original,
          equivalent in all respects to a manually executed counterpart.

     (n)  Intentional Risk Allocation. The provisions of this Agreement reflect
          ---------------------------
          an informed, voluntary allocation between the parties of the risks
          (known and unknown) that may exist in connection with this Agreement.
          This voluntary allocation was a material part of the bargain between
          the parties and the economic and other terms were negotiated and
          agreed to by the parties in reliance on that allocation.

     (o)  Independent Contractors. The parties are independent contractors.
          -----------------------
          Under no circumstances will the employees of one party be deemed the
          employees of the other for any purpose. This Agreement does not grant
          authority for either party to act for the other in an agency or other
          capacity, or to make commitments of any kind for the account of or on
          the behalf of the other.

     (p)  Severability. If any provision of this Agreement is determined to be
          ------------
          invalid or unenforceable, it will be deemed to be modified to the
          minimum extent necessary to be valid and enforceable. If it cannot be
          so modified, it will be deleted and the deletion will not affect the
          validity or enforceability of any other provision unless, as a result,
          the rights of either party are materially diminished or the
          obligations and burdens of either party are materially increased so as
          to be unjust or inequitable.

     (q)  Cumulative Remedies. Except as otherwise provided, the rights and
          -------------------
          remedies in this Agreement are cumulative and in addition to any other
          remedies available at law or equity.

IN WITNESS WHEREOF the parties have caused this Agreement to be executed by
their duly authorized representatives.

OBJECTIVE SYSTEMS INTEGRATORS, INC.          ADELPHIA COMMUNICATIONS CORPORATION

By: /s/ Philip N. Cardman                    By:        /S/ James P. Rigas
    ------------------------------              --------------------------------
Title:  Vice President                       Title:      Vice President
      ----------------------------                 -----------------------------
Date:  12/29/99                              Date:         12/29/99
     -----------------------------                ------------------------------

Address for Notices:

                                                                         Page 10
<PAGE>

Objective Systems Integrators, Inc.        Adelphia Communications Corporation.
101 Park Way                               Main at Water Street
Folsom, CA  95630                          Coudersport, PA  16915
Attn:  Contracts Administration            Attn:  President
Business Telephone:  (916) 353-2400        Facsimile for Notices: (814) 274-7098
Facsimile for Notices: (916) 353-0647
                                           With a copy to:

                                           Adelphia Business Solutions, Inc.
                                           Main at Water Street
                                           Coudersport, PA  16915
                                           Attn:  General Counsel
                                           Facsimile for Notices: (814) 274-7782

                                                                         Page 11
<PAGE>

                                   Exhibit 1
                                   ---------

     *

                                                                         Page 12
<PAGE>

                                   Exhibit 2
                                   ---------

                                ACKNOWLEDGEMENT

THIS ACKNOWLEDGEMENT is made by the undersigned ("Licensee") under the
Enterprise-Wide License Agreement, (ELA-321), dated as of December 20, 1999
("Agreement"), between Adelphia Communications Corporation and Objective Systems
Integrators, Inc. ("OSI"). By execution below, Licensee agrees to be bound by
the terms and conditions of the Agreement as though a signatory thereto.

IN WITNESS WHEREOF, Licensee and the OSI have caused this Acknowledgement to be
executed by their duly authorized representatives as of the later of the dates
indicated below.

__________________________________           OBJECTIVE SYSTEMS INTEGRATORS, INC.
LICENSEE

By: ___________________________________      By: ____________________________

Title: ________________________________      Title: __________________________

Date: _________________________________      Date: ___________________________

                                                                         Page 13
<PAGE>

                                  Exhibit 2a
                                  ----------

                                SOFTWARE ORDER

THIS SOFTWARE ORDER is made by the undersigned ("Licensee") under the
Enterprise-Wide License Agreement (ELA-321), dated as of December 20, 1999
("Agreement"), between Adelphia Communications Corporation and Objective Systems
Integrators, Inc. ("OSI"). On acceptance of this Order by OSI, Licensee agrees
to be bound by all of the terms and conditions of the Agreement as though a
signatory thereto and the software described below will be OSI Software for
purposes of the Agreement.

 .    Description of Additional Copies of OSI Software*

     Product                                          Authorized
     Item #         Quantity       Description         Computers
     ------         -------        -----------         ---------

*    In lieu of completing the description and listing prices in this Order,
     Licensee may incorporate this information by attaching its form of purchase
     order.

 .    Attachment of Licensee's Purchase Order

     If Licensee incorporates information required in Section A by attaching its
     purchase order, Licensee agrees that, except for this information, no
     provisions in its purchase order will (1) be incorporated into this
     Software Order or into the Agreement, or (2) modify or amend the terms of
     this Order or the Agreement.

 .    Designation of Initial Delivery Point/Delivery Schedule

     Licensee directs OSI to deliver the OSI Software to ______________________

IN WITNESS WHEREOF, Licensee and the OSI have caused this Order to be executed
by their duly authorized representatives as of the later of the dates indicated
below.

______________________________              OBJECTIVE SYSTEMS INTEGRATORS, INC.
LICENSEE

By: ___________________________________     By: ______________________________

Title: ________________________________     Title: ___________________________

Date: _________________________________     Date: ____________________________

                                                                         Page 14
<PAGE>

                                   Exhibit 3

                                   SERVICES

1.   DEFINITIONS
     -----------

     (a)  Defect. An error in OSI Software or a failure of OSI Software to
          ------
          conform substantially with its then-current Documentation that can be
          reproduced by OSI. Defects fall into three categories as follows:

          (1)  Priority 1 (Production System Failure). Licensee's primary
               --------------------------------------
               production system (a) is completely unavailable, (b) has a
               problem that occurs with sufficient frequency that the system is
               effectively rendered inoperable, or (c) is affected such that
               critical business processes are unavailable. In each case, no
               Workaround can be immediately identified. For Priority 1 Defects,
               both OSI and Licensee will commit full-time resources to resolve
               the situation.

          (2)  Priority 2 (System Impairment). Licensee's business processes are
               ------------------------------
               impacted or impaired, but Licensee's primary production system
               still functions.

          (3)  Priority 3 (Minor Fault). A Priority 1 or 2 Defect where a
               ------------------------
               Workaround has been identified, the impact on Licensee is minor,
               the Defect has no material operational impact on Licensee, or the
               Defect does not require immediate attention.

     (b)  Emergency Release. A new version of OSI Software that incorporates
          -----------------
          Patches to rectify one or more Priority 1 or Priority 2 Defects. An
          Emergency Release may include additional Documentation.

     (c)  Patch. Replacement of, or provision of an addition to, a portion or
          -----
          module of OSI Software. A Patch may include additions or replacement
          to existing Documentation

     (d)  Remote Access. Access to Licensee's systems required by OSI to provide
          -------------
          Services, which may include dedicated connection, dial-up modem,
          internet, telnet or other means by which OSI can gain the required
          access.

     (e)  Workaround. A modification to the procedures Licensee follows or the
          ----------
          data it supplies when using OSI Software. A Workaround is designed to
          enable OSI Software to operate without materially and adversely
          affecting Licensee's ability to use OSI Software in its production
          environment.

2.   GENERAL
     -------

     (a)  NetExpert Framework Software. Provided Licensee (1) is not in breach
          ----------------------------
          of this Agreement, and (2) has provided OSI with timely Remote Access
          to the affected system, OSI will provide to Licensee the Services
          specified below. Services will be provided only for the current
          generally available release and for the immediately preceding release,
          with all OSI recommended NetExpert(R), operating system, database and
          other patches applied. Other than the current generally available
          release and the immediately preceding release, OSI will provide
          Services for superseded releases on a time and materials basis.

     (b)  Application Components and Rulesets. Because Application Components
          -----------------------------------
          and Rulesets may vary between end-users even for the same network
          element, management operation or other operation, and because
          Application Components and Rulesets may be modified by others after
          delivery by OSI, unless otherwise agreed to by OSI in writing,
          Services for Application Components and Rulesets are provided only on
          a time and materials basis. The following Sections describe the
          limited Services available for Application Components and Rulesets
          when such Services are made available by OSI.

                                                                         Page 15
<PAGE>

3.   UPDATE AND ENHANCEMENT SERVICES
     -------------------------------

     (a)  NetExpert Framework Product Updates. When available, OSI will provide
          -----------------------------------
          Licensee at no additional cost with new and interim versions of
          NetExpert Framework Software, including any enhancements or extensions
          thereto, at the time each version is generally made available to its
          other customers. OSI will make such revisions, enhancements or
          extensions to NetExpert Framework Software as it deems necessary and
          appropriate.

     (b)  Application Components and Rulesets. Generally, Application Components
          -----------------------------------
          and Rulesets are only updated on a time and materials basis.
          Occasionally OSI may update an Application Component or Ruleset for a
          new release of network element software, but unless OSI has agreed
          otherwise with Licensee, that updated Application Component or Ruleset
          will be made available for license by payment of a separate license
          fee, and integration and customization of that Application Component
          or Ruleset into Licensee's system will be required either by OSI, by
          Licensee or by a party contracted by Licensee.

4.   EXTENDED WARRANTY SERVICES
     --------------------------

     (a)  Extended Warranty. As part of the Services for OSI Software, the
          -----------------
          limited warranties provided in Section 8(a) of the Agreement will,
          subject to the terms of the Agreement, be extended for the OSI
          Software as set forth in this Section 4.

     (b)  NetExpert Framework Products. If Licensee believes that there is a
          ----------------------------
          Defect in NetExpert Framework Software, Licensee will (1) promptly
          notify OSI, describing the parameters, procedures and conditions that
          result from the Defect in sufficient detail to permit OSI to isolate
          the code that caused the Defect, and (2) provide OSI with all data
          files, database rules, Licensee Software and Remote Access (and where
          required by OSI, onsite access) required to reproduce and analyze the
          Defect. If OSI is unable to reproduce the Defect, it will have no
          responsibility to take further action.

     (c)  Application Components and Rulesets. If Services are available for
          -----------------------------------
          Application Components or Rulesets, the OSI Extended Warranty only
          covers Application Components and Rulesets in the form provided by
          OSI. On receipt by OSI of the notice described in Section 4(b), OSI
          will analyze the Application Component or Ruleset to determine if the
          Defect is reproducible. OSI will have no obligation for Defects not in
          the original Application Component or Ruleset as provided by OSI.

     (d)  Response Times. On notice of a Defect, during normal business hours
          --------------
          (unless Extended Services are purchased) OSI will initiate work to
          verify the Defect, advise Licensee of its plans for resolving the
          Defect, and use commercially reasonable efforts to resolve the Defect,
          as follows:

          (1)  Priority 1. OSI will promptly initiate work to verify a Priority
               ----------
               1 Defect within two hours of being notified and will try to
               resolve the Defect within 5 business days.

          (2)  Priority 2. OSI will initiate work to verify a Priority 2 Defect
               ----------
               no later than the next business day and will try to resolve the
               Defect within 10 business days.

          (3)  Priority 3. OSI will initiate work to verify a Priority 3 Defect
               ----------
               within 30 business days and will try to include a Patch for the
               Defect in the next update or version of OSI Software provided
               Licensee.

          OSI will also promptly notify Licensee if a Defect cannot be resolved
          within the above time periods and will cooperate in good faith with
          Licensee to arrive at an alternative period for resolution

          (e)  Response. OSI will work diligently to resolve Priority 1 and
               --------
               Priority 2 Defects with a Workaround, Patch or Emergency Release.
               Whenever practical, OSI will verbally advise Licensee of a
               Workaround, followed by a confirmation posted on WebTAC or
               otherwise provided in writing to Licensee. If a Workaround does
               not resolve the Defect, OSI will use commercially reasonable
               efforts to provide a Patch or Emergency Release. If a Workaround
               is provided and resolves the Defect, it will be downgraded to
               Priority 3.

5.   HOTLINE SERVICES
     ---------------

     Telephone Hotline Support will be available from 6:00 a.m. to 5:00 p.m.,
     Pacific Standard Time, Monday through Friday (excluding OSI holidays) for
     Extended Warranty Services and General Support Services.

6.   WEBTAC
     ------

                                                                         Page 16
<PAGE>

     Subject to system availability, which OSI will make commercially reasonable
     efforts to maintain, Licensee will have 24 hour-a-day, 7 day-a-week access
     to OSI's Technical Assistance Center on the World Wide Web, URL
     http://tac.osi.com/. Use of OSI's WebTAC is subject to the terms and
     procedures posted on that site.

7.   GENERAL MATTERS
     ---------------

     (a)  Contacts and Internal Support.
          -----------------------------

          (1)  Adelphia will designate one employee who will be the primary
               contact person and one employee who will be the backup contact
               person (either of whom is the "Contact Person") for all matters
               related to Services. The Contact Person will have successfully
               completed all relevant OSI training. Only the Contact Person will
               use Extended or Hotline Services or OSI's WebTAC.

          (2)  All requests for Services or other assistance will be made
               through Adelphia's Contact Person. Licensee will take and
               document the following actions (to the extent appropriate) both
               before and after reporting a Defect to OSI, and will commit
               appropriate resources to working on the Defect until its source
               has been agreed:

               (A)  maintaining an up-to-date record of system changes, such as
                    upgrades, patches and modifications to operating systems,
                    databases, device software and Products;

               (B)  gathering all relevant information from the user reporting
                    the Defect;

               (C)  identifying the nature of the Defect;

               (D)  reproducing the error and documenting the steps required for
                    that reproduction;

               (E)  eliminating physical causes, such as connections, device
                    malfunctions and memory or CPU problems;

               (F)  examining logs, records, archives, core files and other user
                    documentation;

               (G)  reaching, where possible, a tentative conclusion regarding
                    causation;

               (H)  providing OSI with proper Remote Access and any required
                    assistance; and

               (I)  to the extent appropriate, interfacing with distributors of
                    interfacing systems such as the operating system, database
                    programs and other hardware and software, and working with
                    those distributors to eliminate or identify errors in their
                    systems.

     (b)  Cancellation. Services for OSI Software will be canceled if and when
          ------------
          the license for the OSI Software is terminated. In such event, OSI
          will refund to Licensee a prorata portion of previously paid Services
          fees. Cancellation of Services will not, of itself, constitute
          termination of the Agreement.

     (c)  Modifications and Unauthorized Uses. OSI will have no obligation to
          -----------------------------------
          support OSI Software if it (1) has been modified by Licensee, or (2)
          is being used in violation of the terms of the Agreement. If a
          reported Defect is not a Defect in OSI Software but is actually a
          problem caused by user error, modification of the OSI Software by a
          party other than OSI, or third party hardware or software, OSI may
          invoice Licensee on a time and materials basis for efforts provided by
          OSI personnel above 8 hours for each such Defect.

     (d)  Limitations. UNDER THE OSI EXTENDED WARRANTY, OSI WILL USE ITS
          -----------
          COMMERCIALLY REASONABLE EFFORTS TO REPAIR DEFECTS, BUT OSI DOES NOT
          GUARANTEE THAT IT WILL BE ABLE TO REPAIR ALL DEFECTS, OR THAT ANY
          REPAIR WILL BE SATISFACTORY TO LICENSEE.

                                                                         Page 17
<PAGE>

                                   Exhibit 4
                                   ---------

                                   TRAINING
                                   --------

Licensee may use OSI Training credits to:

     (1)  Attend pre-scheduled OSI training classes in Folsom, California.
          Student registration is required in advance of any class and is
          subject to class availability. The training classes and the training
          units are set out in OSI Training Course Catalogue.

     (2)  Reserve a full class at OSI training at OSI's facilities in Folsom,
          California and select the class modules to be taught. Each class may
          contain up to 12 students. One class day for 12 students equates to 48
          training units.

     (3)  Schedule a class to be taught at Adelphia facilities. Classes must be
          arranged with OSI 2 months in advance. One class day for 12 students
          equates to 48 training units.

For any training at Adelphia's facilities, the following will apply:

Prerequisite Information.
------------------------

OSI will require the following information about the classroom systems 3-4 weeks
prior to arrival.

     .  Host names and host IDs of all of the workstations and servers on the
        classroom network.

     .  Classroom network configuration for the technical training classroom.

     .  The classroom power requirements and/or irregularities. Is the voltage
        220v, 110v, etc. Should OSI expect brownouts, surges, or frequent
        outages?

     .  Name, address, phone and fax numbers, email or Internet address of a
        contact at Adelphia's site that will facilitate training setup.

     .  Full address and phone number of where training will be held. Also
        provide a local map if available.

     .  Full address and phone number of where training materials should be
        shipped.

Local Support.
-------------

Since the OSI instructor will not have local knowledge of the UNIX environment,
a UNIX system administrator and DAB for support will need to be provided. They
must have administrative authority over the hardware and software in the
training room. They also must be available for system support throughout the
duration of the training.

The OSI instructor will also need a local point of contact. This person will
provide the instructor access to the building where the classes are to be
conducted and local information as needed.

Completed Before Arrival.
------------------------

The classroom facilities must be completely setup before the instructor arrives
at the site. This includes setting up:

     .  Student seating, classroom furniture, and amenities.

     .  The classroom network. All workstations must be able to operate on the
        same network, and mount ifs filesystems exported by the server.

If this work is not completed prior to the instructor's arrival, it could delay
the start of training.

                                                                         Page 18
<PAGE>

System Configuration.
--------------------

The following requirements state the minimum requirements for an OSI technical
training class. The classroom systems need not be the exact models specified.
However, they should be systems equivalent to those specified.

     Server
     ------

     The classroom will require one system that will function as the classroom's
     file and database server.

               -------------------------------------------------
                                       Sparc Ultra 1170
                 Model
               -------------------------------------------------

                                       256mb
                 Real Memory
               -------------------------------------------------

                 Disk Drive(s)          4 gigabytes
               -------------------------------------------------

     Clients
     -------

     The classroom will require one client workstation for every two students.
     Each client workstation will access filesystems on the server via nfs. Each
     student workstation will need one partition that is at least one gigabyte
     in size. Students to install NetExpert during the System Administration
     class will use this partition. OSI typically uses the /opt filesystem for
     this purpose

               -------------------------------------------------
                                       Sparc Ultra 170
                  Model
               -------------------------------------------------

                                       128mb
                  Real Memory
               -------------------------------------------------

                                       2 gigabytes
                  Disk Drive           One partition must be at
                                       least 1 gigabyte in size
               -------------------------------------------------

     Ethernet Hub
     ------------

     The hub needs enough ports to support all of the machines in the room, as
well as the instructor's laptop PC.

Classroom Installation.
----------------------

The OSI instructor will bring a Sun 9.2 Sparc Unipack external disk drive. This
disk drive contains all of the necessary data to conduct the Basic Rules
Development, Basic VisualAgent, and Basic Operator classes. This data includes
the NetExpert and Informix installations, UNIX user accounts, and license files
necessary to conduct the class.

Classroom setup normally requires two days for installation and testing. The OSI
instructor, with the assistance of the local system administrator, will:

     .  Attach and install the hard drive to the classroom fileserver via a SCSI
        connection.

     .  Mount the filesystems on the external hard drive locally on the
        fileserver.

     .  Install the user accounts on the fileserver.

     .  Export the external hard drive's filesystems via nfs.

                                                                         Page 19
<PAGE>

     .  Mount the external hard drive's filesystems on the clients.

     .  Install the external hard drive's filesystems on the clients.

The instructor will install the user accounts on the workstations by backing up
the /etc/passwd, /etc/group, and /etc/shadow files on each workstation and then
overwriting them with the passwd, group, and shadow found on the external hard
drive. During breakdown at the end of the training session, the instructor will
restore the original passwd, group, and shadow files to their original
locations.

                                                                         Page 20
<PAGE>

                                   Exhibit 5
                                   ---------

                          TECHNOLOGY ESCROW AGREEMENT

                    Account Number ___________________

          This Technology Escrow Agreement including any Exhibits ("Agreement")
is effective this _______ day of _____________, 199___. ("Effective Date"), by
and among Data Securities International, Inc. ("DSI"), a Delaware corporation,
Objective Systems Integrators, Inc., a California corporation ("Licensor") and
_______________________, a ________________ corporation ("Licensee").

          Notices to Licensor, Licensee and DSI should be sent to the parties at
the addresses identified in the attached Exhibit A.

          WHEREAS, Licensor has entered or will enter into a contract with the
Licensee for the use of proprietary technology and other materials of Licensor;

          WHEREAS, Licensor and Licensee desire the Agreement to be
supplementary to said contract pursuant to 11 United States Code ("USC") Section
365(n):

          WHEREAS, availability of or access to certain proprietary data related
to the proprietary technology and other materials is critical to Licensee in the
conduct of its business;

          WHEREAS, Licensor has deposited or will deposit with DSI the related
proprietary data to provide for retention and controlled access for Licensee
under the conditions specified below;

          NOW THEREFORE, for good and valuable consideration, the receipt of
which is hereby acknowledged, and in consideration of the promises, mutual
covenants and conditions contained herein, the parties hereto agree as follows:

1.        Licensor Deposit Account. Following the execution and delivery of the
          ------------------------
          Agreement and the payment of the set-up and deposit account fees to
          DSI, DSI shall open a deposit account ("Deposit Account") for
          Licensor. The opening of the Deposit Account means that DSI shall
          establish an account ledger in the name of Licensor, calendar Licensor
          to receive renewal notices as provided in Section 9, and request the
          initial deposit from Licensor until an initial deposit is received.
          Unless and until Licensor makes the initial deposit ("Initial
          Deposit") with DSI, DSI shall have no further obligation to Licensor
          except as defined by this section.

2.        Initial Deposit. The Initial Deposit will consist of all material
          ---------------
          initially supplied by Licensor to DSI as specified by an accompanying
          document called a "Description of Deposit Materials" hereinafter
          referred to as "Exhibit B". DSI shall issue a copy of the Exhibit B to
          Licensor and Licensee within ten (10) days of acceptance of the
          Initial Deposit by DSI.

3.        Deposit Changes. "Deposit" means and includes the Initial Deposit
          ---------------
          and/or Supplemental Deposit and/or Replacement Deposit upon acceptance
          by DSI. Unless otherwise provided by the Agreement Licensor has the
          obligation to keep the Deposit updated with current materials.

          Licensor hereby agrees to update the Deposit held by DSI with
          supplemental or replacement technology releases within thirty (30)
          days of distribution of a technology release to Licensee. Such deposit
          activity shall occur at least every 12 months or Licensor shall
                                              --
          certify to Licensee that the Deposit contains the latest technology
          release.

                    a.   Supplemental Deposit. "Supplemental Deposit" means and
                         --------------------
                         includes any material added to the Deposit. Licensor
                         will submit the Supplemental Deposit accompanied by an
                         Exhibit B.

                                                                         Page 21
<PAGE>

                         DSI shall issue a copy of the Exhibit B to
                         Licensor and Licensee within ten (10) days of
                         acceptance of the Supplemental Deposit by DSI.

                    b.   Replacement Deposit. "Replacement Deposit" means and
                         -------------------
                         includes any material which replaces the Deposit or
                         portions of the Deposit defined by Exhibit B(s). Items
                         of the Deposit defined in an Exhibit B may not be
                         replaced. Licensor will submit the Replacement Deposit
                         accompanied by an Exhibit B.

                         Within ten (10) days of receipt of a request by
                         Licensor to replace, DSI will send a notice to Licensee
                         stating that Licensor request to replace, and DSI will
                         include a copy of the Exhibit B defining the new
                         material.

                         Licensee has thirty (30) days from the mailing of such
                         notice by DSI to instruct DSI to retain the Deposit
                         held by DSI and if so instructed DSI will change the
                         Replacement Deposit to a Supplemental Deposit.
                         Retention could incur an additional storage unit fee as
                         specified by DSI's Fee and Service Schedule.

                         If Licensee does not instruct DSI to retain the
                         Deposit, or portions of the Deposit requested to be
                         replaced, DSI shall permit such Deposit to be replaced
                         with the Replacement Deposit.

                         DSI shall issue a copy of the Exhibit B to Licensor and
                         Licensee within ten (10) days of acceptance of the
                         Replacement Deposit by DSI. DSI will either destroy or
                         return to Licensor all material that is replaced by the
                         Replacement Deposit.

4.        Deposit Inspection. Upon receipt of an Exhibit B, DSI will visually
          ------------------
          match the listed items on the Exhibit B to the labeling of the
          material ("Deposit Inspection"). DSI will not be responsible for the
          contents or for validating the accuracy of Licensor's labeling.
          Acceptance will occur when DSI concludes that the Deposit Inspection
          is complete.

5.        Licensee Registration Account. Following the execution and delivery of
          -----------------------------
          the Agreement and the payment of the registration fee to DSI, DSI
          shall open a registration account ("Registration Account") for
          Licensee. The opening of the Registration Account means that DSI shall
          establish an account ledger in the name of Licensee, calendar Licensee
          to receive renewal notices as provided in Section 9, and request the
          Initial Deposit from Licensor until an Initial Deposit is received.
          Unless and until Licensor makes the Initial Deposit with DSI, DSI
          shall have no obligation to Licensee except as defined by this
          section.

6.        Deposit Obligations of Confidentiality. DSI agrees to establish a
          --------------------------------------
          receptacle in which it shall place the Deposit and shall put the
          receptacle under the control of one or more of its officers, selected
          by DSI, whose identity shall be available to Licensor and Licensee at
          all times. DSI shall exercise a professional level of care in carrying
          out the terms of the Agreement.

          DSI acknowledges Licensor's assertion that the Deposit shall contain
          Licensor's proprietary data and that DSI has an obligation to preserve
          and protect that confidentiality.

          Licensor grants DSI the irrevocable right to duplicate the Deposit
          only as necessary to preserve and safely store the Deposit and to
          provide a copy thereof as authorized herein to Licensee. DSI shall
          reproduce on all copies of the Deposit made by DSI any proprietary or
          confidentiality notices contained in the Deposit originally deposited
          with DSI by Licensor.

7.        Verification Rights. Licensor grants to DSI the right to verify the
          -------------------
          Deposit for accuracy, completeness and sufficiency. Licensor hereby
          also permits DSI to verify, audit, and inspect the Deposit held or to
          be held by DSI to confirm the quality of the Deposit for the benefit
          of Licensee. Upon request by Licensor, DSI will issue a copy of the
          verification results to Licensor.

                                                                         Page 22
<PAGE>

     In the event that Licensee retains DSI to perform verification of the
     Deposit, Licensor hereby grants to DSI the right to use the facilities of
     Licensor, free of charge to DSI, including Licensor's computer systems.
     Licensor agrees to make available any technical and support personnel
     necessary for DSI to perform verification of the Deposit, Licensee or
     Licensor may retain DSI to perform verification of the Deposit upon receipt
     by DSI of an executed Verification Agreement.

     Licensor hereby grants to DSI permission to release to Licensee information
     pertaining to directory lists and/or table of contents of computer media,
     manuals, schematics, and manufacturing documents. Licensor grants to DSI
     permission to release to Licensee copies of any executables or object code
     modules prepared by DSI during the "Load and Compile" validation level for
     the purposes of determining the content and quality of the Deposit.

     If requested by Licensee, Licensor agrees to permit one employee of
     Licensee to be present at Licensor's facility and to observe the
     verification of the Deposit held or to be held by DSI.

8.   Certification by Licensor.  Licensor represents to Licensee that:
     -------------------------

     a.   The Deposit delivered to DSI consists of the following:

          source code deposited on computer magnetic media, all necessary and
          available information, proprietary information, and technical
          documentation which will enable Licensee to create, maintain and/or
          enhance the licensed material without the aid of Licensor or any other
          person or reference to any other materials, maintenance tools (test
          programs and program specifications), proprietary or third party
          system utilities (compiler and assembler descriptions), description of
          the system/program generation, and descriptions and locations of
          programs not owned by Licensor but required for use and/or support.

     b.   The Deposit will be defined in the Exhibit B(s).

          These representations shall be deemed to be made continuously
          throughout the term of the Agreement.

9.   Term of Agreement.  The Agreement will have an initial term of one year,
     -----------------
     commencing on the Effective Date. The Agreement may be renewed for
     additional one-year periods upon receipt by DSI of the specified renewal
     fees prior to the last day of the term ("Expiration Date"). In the event
     that renewal fees are not received thirty (30) days prior to the Expiration
     Date, DSI shall so notify Licensor and Licensee. If the renewal fees are
     not received by the Expiration Date, DSI may terminate the Agreement
     without further notice and without liability of DSI to Licensor and
     Licensee. Licensee has the right to pay renewal fees and other related
     fees. In the event Licensee pays the renewal fees and Licensor is of the
     opinion that any necessary condition for renewal is not met, Licensor may
     so notify DSI and Licensee in writing. The resulting dispute will be
     resolved pursuant to the dispute resolution process defined in Section 15.

10.  Expiry.  If the Agreement is not renewed or is otherwise terminated, all
     ------
     duties and obligations of DSI to Licensor and Licensee will terminate. If
     Licensor requests the return of the Deposit upon termination or expiration
     of the Agreement, DSI shall return the Deposit to Licensor only after all
     outstanding invoices and deposit return fees are paid by Licensor. If the
     fees are not received by the Expiration Date of the Agreement, DSI shall,
     at its option, either destroy or return the Deposit to Licensor.

11.  Filing For Release of Deposit by Licensee. Upon notice to DSI by Licensee
     -----------------------------------------
     of the occurrence of a release condition as defined in Section 13 and
     payment of the release request fee, DSI shall notify Licensor by certified
     mail with a copy of the notice from Licensee. If Licensor provides contrary
     instruction within ten (10) days of the mailing of the notice to Licensor,
     DSI shall not deliver a copy of the Deposit to Licensee.

     "Contrary Instruction" means the filing of an affidavit or declaration with
     DSI by an officer of Licensor stating that a release condition has not
     occurred or has been cured. DSI shall send a copy of the affidavit or

                                                                         Page 23
<PAGE>

     declaration by certified mail to Licensee. DSI shall notify both Licensor
     and Licensee that there is a dispute to be resolved pursuant to Section 15.
     Upon receipt of Contrary Instruction, DSI shall not deliver a copy of the
     Deposit and shall continue to store the Deposit until directed by Licensor
     and Licensee jointly, resolved pursuant to Section 15, or ordered by a
     court of competent jurisdiction.

12.  Release of Deposit to Licensee. If DSI does not receive Contrary
     ------------------------------
     Instruction from Licensor, DSI is authorized to release the Deposit, or if
     more than one Licensee is registered to the Deposit, a copy of the Deposit,
     to the Licensee filing for release following receipt of any fees due DSI
     including Deposit copying and delivery fees.

13.  Release Conditions of Deposit to Licensee.  Release Conditions are:
     -----------------------------------------

     a.   Licensor's failure to carry out maintenance or support obligations
          imposed on it pursuant to a license agreement or other agreement(s)
          between Licensor and Licensee; or

     b.   Licensor's failure to continue to do business in the ordinary course;
          or

14.  Conditions for Use Following Release. Following a release and payment to
     ------------------------------------
     DSI of all outstanding fees, Licensee shall have the non-exclusive right to
     use the Deposit solely for the purpose of continuing the benefits afforded
     to Licensee by a license agreement or other agreement(s) between Licensor
     and Licensee, unless otherwise specified in such license Agreement or other
     agreement(s). Additionally, Licensee shall be required to maintain the
     confidentiality of the released Deposit.

15.  Disputes. In the event of a dispute, DSI shall so notify Licensor and
     --------
     Licensee in writing. Such dispute will be settled by arbitration in
     accordance with the rules of the American Arbitration Association ("AAA").
     Licensor and Licensee will each select one arbitrator and a third
     arbitrator will be selected unanimously by said arbitrators. If said
     arbitrators are unable to select the third arbitrator within ten (10) days,
     the parties consent to the selection of the third arbitrator by the AAA
     Administrator. Unless otherwise agreed to by Licensor and Licensee,
     arbitration will take place at San Francisco, California.

16.  Indemnification. Licensor and Licensee agree to defend and indemnify DSI
     ---------------
     and hold DSI harmless from and against all claims, actions and suits,
     whether in contract or in tort, and from and against any and all
     liabilities, losses, damages, costs, charges, penalties, counsel fees, and
     other expenses of any nature (including, without limitation, settlement
     costs) incurred by DSI as a result of performance of the Agreement except
     in the event of a judgment which specified that DSI acted with gross
     negligence or willful misconduct.

17.  Audit Rights. DSI agrees to keep records of the activities undertaken and
     ------------
     materials prepared pursuant to the Agreement. Licensor and Licensee will be
     entitled upon reasonable notice and during normal business hours during the
     term of the Agreement to inspect the records of DSI with respect to the
     Agreement.

     Licensor or Licensee accompanied by an employee of DSI will be entitled to
     inspect the physical status and condition of the Deposit, upon reasonable
     notice and during normal business hours. The Deposit may not be changed by
     Licensor or Licensee during the audit.

18.  Designated Representative. Licensor and Licensee each agree to designate
     -------------------------
     one individual to receive notices from DSI and to act on behalf of Licensor
     and Licensee respectively in relation to the performance of their
     obligations as set forth in the Agreement and to notify DSI immediately in
     the event of any change from one designated representative to another in
     the manner stipulated in Exhibit A.

19.  General. DSI may act in reliance upon any written instruction, instrument,
     -------
     or signature believed to be genuine and may assume that any person giving
     any written notice, request, advice or instruction in connection with or
     relating to the Agreement has been duly authorized to do so. DSI is not
     responsible for failure to fulfill its obligations under the Agreement due
     to causes beyond DSI's control.

     The Agreement is to be governed by and construed in accordance with the
     laws of the State of California.

                                                                         Page 24
<PAGE>

     The Agreement, including any Exhibits, constitutes the entire agreement
     between the parties concerning the subject matter hereof, and supersedes
     all previous communications, representations, understandings, and
     agreements, either oral or written, between the parties.

     If any provision of the Agreement is held by any court to be invalid or
     unenforceable, that provision will be severed from the Agreement and any
     remaining provisions will continue in full force.

20.  Fees. All service fees will be due in full at the time of the request for
     ----
     service. Annual renewal fees will be due in full upon the receipt of
     invoice unless otherwise specified by the invoice. If invoiced fees are not
     paid within sixty (60) days of receipt of invoice, DSI may terminate the
     Agreement. If the payment is not timely received by DSI, DSI shall have the
     right to accrue and collect interest at the rate of one and one-half
     percent per month (18% per annum) from the date of the invoice for all late
     payments.

     All service fees and annual renewal fees will be those specified in DSI's
     Fee and Service Schedule in effect at the time of renewal or request for
     service, except as otherwise agreed. For any increase in DSI's standard
     fees, DSI shall notify Licensor and Licensee at least ninety (90) days
     prior to the renewal of the Agreement. For any service not listed on the
     Fee and Service Schedule, DSI shall provide a quote prior to rendering such
     service.

<TABLE>
<S>                                     <C>                                  <C>
Date:_______________________________    Date:____________________________    Date:________________________________

Objective Systems Integrators, _____    __________________Data Securities
Inc. (Licensor):                        Licensee:                            International, Inc. (DSI):

By:_________________________________    By:______________________________    By:__________________________________

____________________________________    _________________________________    _____________________________________
(Print Name)                            (Print Name)                         (Print Name)

____________________________________    __________________________________   ____________________________________
Title                                   Title                                Title
</TABLE>

                                                                         Page 25
<PAGE>

                                                                       Exhibit A
                           TECHNOLOGY ESCROW AGREEMENT

                    Account Number _________________________

                    Designated representatives and locations

Notices to Licensor regarding
Agreement terms and conditions                  Invoices should
should be addressed to:                         be addressed to:

Licensor:     ______________________________    ________________________________

Address:      ______________________________    ________________________________
              ______________________________    ________________________________
              ______________________________    ________________________________

Designated
representative:_____________________________    ________________________________

Phone:        ______________________________    ________________________________

Notices to Licensee regarding
Agreement terms and conditions                  Invoices should
should be addressed to:                         be addressed to:

Licensee:     ______________________________    ________________________________

Address:      ______________________________    ________________________________
              ______________________________    ________________________________
              ______________________________    ________________________________

Designated
representative:_____________________________    ________________________________

Phone:        ______________________________    ________________________________

All requests from Licensor or Licensee to change the designated representative
must be given in writing and signed by the designated representative or an
officer of Licensor or Licensee as the case may be.

All contracts, deposits and                     Invoice inquiries and
official notifications to DSI                   remittance of fees to DSI
should be addressed to:                         should be addressed to:

Data Securities, Int'l., Inc.                   Data Securities Int'l., Inc.
Attn:  Contract Administration                  Attn:  Accounts Receivable
6165 Greenwich Drive, Suite 220                 49 Stevenson Street, Suite 550
San Diego, CA 92122                             San Francisco, CA 94105
(619) 457-5199                                  (415) 541-9013

Date:    ___________________________________

                                                                         Page 26
<PAGE>

                                                                       Exhibit B

                        Description of Deposit Materials
                        --------------------------------

Deposit Account Number_____________________________________

Account Name_______________________________________________

Licensor, pursuant to a specific Escrow Agreement between the parties, hereby
deposits the below described materials into the above referenced Deposit Account
by transferring them to Data Securities International, Inc. The Deposit type is
(check space that applies)

_____ Initial Deposit  _____  Supplemental Deposit  _____ Replacement Deposit

If Replacement then destroy Deposit __________ or return Deposit____________

If no Deposit type has been checked the materials will be deemed to be an
Initial or Supplemental Deposit.

DEPOSIT MATERIALS

Name_____________________________________________________ Version_______________

Date_______________________________     CPU/OS___________ Compiler______________

Application_____________________________________________________________________

Utilities needed________________________________________________________________

Special operating instructions__________________________________________________

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

Item Description                   Media                          Quantity
----------------                   -----                          --------

I certify that the above-described         Received the materials subject to the
materials were delivered/sent to           Terms and Conditions set forth below.
Data Securities International, Inc.

By___________________________________      By___________________________________

Name_________________________________      Name_________________________________

Title________________________________      Title________________________________

For__________________________________      For Data Securities Int'l.

Date_________________________________      Date_________________________________

                                                                         Page 27
<PAGE>

OBLIGATIONS OF DATA SECURITIES INTERNATIONAL

If the fees are current, Data Securities International, Inc. (DSI) is obligated
to hold these Deposit Materials and treat them as called for in the specific
Escrow Agreement between the parties. The specific Escrow Agreement between the
parties obligates DSI not to disclose, divulge nor otherwise make available to
any third party the deposited materials except pursuant to an agreement between
Licensor and DSI. DSI shall have no obligation to any licensee or other third
party except Registered and/or Subscribed Licensees accepted by DSI, to the
extent provided in a writing signed by DSI. DSI shall have the right to modify
or cancel this Agreement without the consent of any third party unless expressly
prohibited from doing so by an agreement signed by DSI.

Upon the receipt of an Exhibit B, DSI will visually match the listed items on
the Exhibit B to the labeling of the material ("Deposit Inspection"). DSI will
not be responsible for the contents or for validating the accuracy of Licensor's
labeling. Acceptance will occur when DSI signs the Exhibit B document concluding
that the Deposit Inspection is complete.

DEFINITIONS

Licensor may update the Deposit Account with Supplemental Materials or
Replacement Materials.

Supplemental Materials are materials that are to be added to the existing
Deposit by Licensor. The Supplemental Materials will be incorporated into the
existing Deposit and treated as the whole.

Replacement Materials are materials which replace the entire Existing Deposit.
Licensor may request to replace the entire Existing Deposit. The Existing
Deposit that has been contractually allowed to be replaced will be dealt with as
specified in the specific Escrow Agreement between the parties, or its Exhibits
and Addenda.

DSI reserves the right to destroy the Existing Deposit for which return of
deposit fees have not been paid. DSI will notify Licensor of such action.

WARRANTY BY LICENSOR

Licensor represents and warrants that it is lawfully possessed of all Deposit
Materials stored under the specific Escrow Agreement between the parties and has
the authority to store them in accordance with the terms thereof.

AMENDMENT

This form acts as an Amendment, if one is called for.

                                                                         Page 28
<PAGE>

                                   Exhibit 6
                                   ---------

                           OSI CUSTOMER ADVISORY BOARD

The purpose of OSI's Customer Advisory Board ("CAB") is to involve a select
group of users in the definition and execution of OSI's short and long term
product strategies.

The CAB will assist OSI in:
     .   planning product direction.
     .   defining specific product requirements.
     .   validating that specifications and prototypes effectively address the
         requirements.
     .   testing pre-release products, including beta testing and, where
         appropriate, testing in a production environment prior to general
         availability.

In this cooperative arrangement, Adelphia will have the opportunity to work
closely with OSI's internal product teams. These teams are comprised of
individuals from product management, development, technical publications, QA,
customer support, professional services, sales and marketing. Interaction will
be via meetings, conference calls and written documentation.

Adelphia will kick off the program with a meeting in Folsom to discuss product
direction and requirements, and to meet the OSI product teams. As design and
development continues, OSI will follow up with correspondence and meetings to
validate progress. As beta test periods approach, Adelphia will prepare in
advance by attending training classes at OSI and configuring its test
environment. OSI will monitor beta installations and Adelphia will be requested
to report on product performance. For some products or features, we may mutually
agree to follow the beta test with a limited test in a production environment.

Because some members of the CAB may compete with each other, to facilitate free
discussion of strategic direction, most meetings used to solicit input and
feedback will be conducted with individual CAB members. Training classes and
general information meetings may be conducted for the group as a whole.

Adelphia Benefits.
-----------------

Adelphia will have input on the strategic direction of OSI product development,
regular interaction with OSI's product development and support personnel, the
opportunity to evaluate OSI pre-release products, and the ability to have its
technical personnel gain a detailed understanding of the capabilities of
NetExpert(TM) software and OSI's future development plans.

Adelphia Obligations.
--------------------

Adelphia agrees to the following:

     .   It will designate one key technical employee as its CAB representative.
         That employee or one or more designees with appropriate experience in
         network management issues will participate in each phase of the
         program, reviewing materials, attending meetings and providing OSI with
         feedback on the issues raised;

     .   As new pre-release products are provided to Adelphia, it will create an
         appropriate test environment with OSI assistance, and provide feedback
         to OSI on the performance of the pre-release products and suggestions
         for its improvement;

     .   Adelphia will be responsible for all of your costs incurred in
         connection with its CAB participation.

                                                                         Page 29
<PAGE>

OSI's Commitment.
----------------

     .   OSI will conduct regular meetings of the CAB and will provide CAB
         members with its plans for product development and improvement;

     .   OSI will provide pre-release products relevant to Adelphia's operations
         as soon as they are available;

     .   OSI will assist you Adelphia setting up an appropriate test environment
         for pre-release products;

     .   OSI will provide the highest consideration of all suggestions and
         comments.

Protection of Confidential Information and Intellectual Property Rights.
-----------------------------------------------------------------------

     .   During Adelphia's participation in the CAB, it will be provided with
         some of OSI's most sensitive confidential information, including
         product development plans, specifications, pre-release products, flow
         charts, and other nonpublic information relating to OSI's products,
         code, marketing and finances. Adelphia may also provide OSI with its
         confidential information, although comments, suggestions, improvements
         and other communications from Adelphia to OSI regarding OSI products
         become the sole property of OSI. OSI may use them without compensation
         or attribution, and Adelphia will take all reasonable steps requested
         by OSI to confirm OSI's sole ownership of all rights arising from them.
         Each party will hold in confidence all confidential information of the
         other and the other's licensors, not use that information for purposes
         other than the evaluation, design, improvement, marketing and
         development of OSI products and not disclose that information except to
         those employees and advisors who (1) have a need to know it to assist
         in the party's efforts under this arrangement, and (2) are bound by law
         or have agreed in writing to maintain the information in confidence. If
         either party discovers that confidential information of the other has
         been improperly used, disseminated or published, it will immediately
         notify the other party and take all reasonable actions to minimize the
         impact of the disclosure.

     .   Adelphia will be provided from time to time with OSI products
         (including software, manuals and other documentation) such as beta and
         other pre-release versions of existing or new products, patches and
         upgrades. OSI grants Adelphia a nonexclusive, nontransferable license
         to (a) use those products in executable code form only, on computers
         owned or leased by it and located in its facilities at the address
         noted above or another location approved by OSI in writing to assist
         OSI in testing and debugging those OSI products and to use those OSI
         products for its internal business purposes in connection with that
         assistance, and (b) make backup copies of those OSI products only as it
         reasonably requires for that purpose. No other rights are granted to
         Adelphia by this agreement. Without limitation, Adelphia will not use
         those OSI products to monitor or control any third party's network,
         produce revenue for you, demonstrate or provide those OSI products to
         any other party, or develop products owned by any party other than OSI.
         On request from OSI, or on termination of Adelphia's participation in
         the CAB, Adelphia will immediately cease use of those OSI products,
         return those OSI products to OSI, remove all copies, whole or partial,
         from any media and provide OSI with a written statement from an officer
         stating that all of those copies have been either destroyed or
         returned.

     .   All right, title and interest to copyrights, trade secrets, patents and
         other intellectual property rights in OSI products will remain the
         exclusive property of OSI and its licensors. Adelphia may input data as
         required to use OSI products for the purposes requested by OSI under
         the CAB, but it will not make, alter, adapt, modify or make derivative
         works of OSI products or merge OSI products into other programs or
         materials. Adelphia will not make copies of OSI products except as
         permitted in this agreement. Adelphia will not decompile, disassemble
         or otherwise reverse engineer any executable code, object code or
         source code of OSI products, or decode, de-encrypt, reverse engineer or
         otherwise attempt to avoid any authorization keys and other

                                                                         Page 30
<PAGE>

         security devices in OSI products. Adelphia will be solely responsible
         for obtaining any hardware and licenses for other products required for
         you to use OSI products.

     .   Any OSI products or services provided in connection with the CAB are
         provided "as is," and OSI will have no responsibility for correcting
         any errors, modifying OSI products in any way or for providing a
         commercially available product based upon OSI products or for support
         or updates to OSI products and services. OSI MAKES NO WARRANTIES,
         EITHER EXPRESS OR IMPLIED, AS TO OSI PRODUCTS AND SERVICES, INCLUDING
         IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
         OR NON-INFRINGEMENT. Adelphia acknowledges that OSI products in beta-
         test or pre-release form may contain "bugs," inoperable features and
         other defects which may not be corrected by OSI, and that the purpose
         of its use of OSI products is to help OSI develop OSI products.
         Adelphia assumes all risks arising from its possession and use of OSI
         products.

     .   EXCEPT IF ONE OF THE PARTIES VIOLATES THE INTELLECTUAL PROPERTY RIGHTS
         OF THE OTHER PARTY, NEITHER PARTY WILL BE LIABLE, REGARDLESS OF THE
         FORM OF ACTION, FOR LOST REVENUES, PROFITS OR SAVINGS, OR FOR INDIRECT,
         CONSEQUENTIAL, INCIDENTAL, SPECIAL OR PUNITIVE DAMAGES, EVEN IF IT HAS
         BEEN ADVISED OF THE POSSIBILITY OF THE DAMAGES.

Legal Terms and Conditions.
--------------------------

     .   Compliance with Laws. OSI products and all related rights, technical
         --------------------
         data and information are subject to controls imposed by the U.S.
         Government and other countries. Adelphia will comply with all of those
         controls and all other applicable laws, regulations, codes and
         ordinances.

     .   No Assignment. Adelphia's membership in the CAB and any of its rights
         -------------
         and obligations under this agreement will not be assigned or delegated
         without OSI's written approval.

     .   Disputes. Despite our best intentions, disputes may arise under or in
         --------
         connection with this agreement. We will make very effort to resolve any
         dispute informally to both parties' satisfaction, but if we cannot
         resolve a dispute informally, it will be resolved exclusively in the
         federal or state courts located in Sacramento, California, without a
         jury. Both parties waive any right to a jury trial and consent to the
         personal jurisdiction and exclusive venue of those courts for that
         purpose. This agreement will be governed by and construed in accordance
         with the laws of the State of California, excluding its conflicts of
         law provisions, and will be deemed to have been entered into and wholly
         performed in Sacramento County, California.

     .   Equitable Relief. Any breach of either party's obligations with respect
         ----------------
         to the intellectual property rights of the other will cause irreparable
         injury for which there are no adequate remedies at law. Each party and
         its licensors will be entitled to equitable relief in addition to all
         other remedies that may be available, without the posting of bond or
         other security or, if required, then the minimum bond or security so
         required.

     .   Entire Agreement. This agreement is the entire agreement between the
         ----------------
         parties with respect to the CAB and supersedes all previous
         communications, both oral and written, between the parties. No waiver,
         amendment or modification of this agreement will be effective unless in
         writing and signed by an authorized representative of the party against
         whom enforcement is sought. No waiver by a party of a breach of this
         agreement will constitute a waiver of any other breach of that or any
         other provision of this agreement.

     .   Independent Contractors. The parties are independent contractors and
         -----------------------
         not partners or joint venturers. Under no circumstances will the
         employees of one party be deemed the employees of the other for any
         purpose. This agreement does not grant authority for either party to
         act for the other in an agency or other capacity, or to make
         commitments of any kind for the account of or on the behalf of the
         other.

                                                                         Page 31
<PAGE>

     .   Term. The terms of this letter will apply so long as Adelphia
         ----
         participates in the CAB. Adelphia's participation in the CAB may be
         terminated, at its option, with 30 days' notice, but the Protection of
         Confidential Information provisions, the Intellectual Property Rights
         provisions and the Legal Terms and Conditions provisions set forth
         above will survive that termination.

                                                                         Page 32

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