Document:

<PAGE>

   [Registrant has removed proprietary and confidential information, indicated
     by an asterisk "*", pursuant to a request for confidential treatment.
     Registrant has filed the confidential portion separately with the SEC.]

                                                                  July 19, 1999
                          Memorandum of Understanding
                          ---------------------------

Both Parties Agree that:

1. TEK and ePhone become "Strategic Partners" and work together on a continuing
basis to the benefit of both companies.

2. As part of the partnership TEK commits to support the development and
delivery of TEKI agates as a first priority. The TEKI iGate will enable ePhone
to offer an IP telephony based fax and voice service. The specific product
specifications are to be mutually agreed defined between ePhone and TEK. TEK
agrees that the iGates to be delivered to ePhone will be branded as ePhone
iGates.

3. In addition to product specifications, TEK agrees to support ePhone with
specific commitments of technical support and assignment of personnel. These
commitments will be agreed between TEK and ePhone by July 16 and incorporated
into an implementation plan which will form an addendum to this agreement
(Addendum A). Addendum A will cover:

     --   product development and delivery milestones

     --   actions and deliverables by specified personnel within TEK specific
          commitments in terms of time by specified individuals within TEK to
          ePhone's program

     --   technical support for ePhone in the field

     --   specific schedule of TEK iGate deliveries to ePhone

4. ePhone has the right to name a replacement director for Robert Clarke if he
resigns from the board of TEK. It is Clarke's intention to resign from the board
in the near future.

5. ePhone will be granted the same provisions for escrow and access to the
source code as Franklin Telecom and will also have the right to manufacture the
TEK iGate in case TEK is unable to manufacture the product for ePhone.

6. Joint Press Releases will de disseminated as agreed between the two
companies.

7. ePhone will continue to assist TEK in its efforts to raise additional
capital.

8. TEK agrees that it will make ePhone its first priority in terms of product
development and customer support.

<PAGE>

TEK Undertakings

1.   TEK will provide the TEK iGate product, as well as necessary technical
     support, to ePhone as a hardware vendor. The existing two port V-Server
     will be productized to facilitate the launch of the ePhone service by
     August 2, 1999.

2.   The initial launch of the service will be based on the existing 2 port unit
     with minor modifications (modifications to be specified and agreed). This
     will also form the basis of a mutually agreed upon acceptance plan (Gateway
     with Billing Capability).

3.   TEK agrees to ensure that the product passes CE for LAN (ie. non-ISDN &
     Class A) by July 30, 1999. ePhone acknowledges that in order to obtain CE
     Class A certification for ISDN by September 15, 1999 additional equipment,
     estimated to cost $50,000 (specifications and details to be supplied by
     TEK), will be required. ePhone further acknowledges that this additional
     equipment must be ordered by August 1, 1999 by TEK in order to meet the
     September 15, 1999 date. There will be penalty to TEK if it does not meet
     the CE certification for ISDN by September 15, 1999. This penalty will be
     calculated on the basis of the costs incurred by ePhone due to the missing
     of the September 15th deadline, plus _*_%.

4.   For all units additional to the initial order of 500 units, TEK agrees to
     provide ePhone with all new units at a maximum price of cost plus a maximum
     markup of _*_% for 3 years. Cost is defined to include all licensing,
     royalties, manufacturing, and 3rd party warranty support costs. ePhone will
     have the right to audit these costs. The first 500 units are priced at
     $700, as previously agreed, but additional units will be priced in
     accordance with a volume discount schedule supplied by TEK (Addendum B to
     this agreement). For the same volume of iGates TEK will offer ePhone a
     preferred volume discount schedule as compared to other purchasers of
     iGates.

5.   TEK agrees that the optional features of the TEK iGate product line will be
     compatible with ePhone's service and will provide preferential access to
     ePhone and further that TEK will provide access server directory records
     including billing capability (tested and approved by ePhone) so that ePhone
     can maintain a WEB based directory. This optional feature will be based on
     cost-plus program for TEK to design and implement per ePhone's requirement.

                                      -2-

<PAGE>

6.   TEK will guarantee the best markup rate within same category to ePhone
     comparing to all distributors & OEM accounts. The same products cannot be
     sold by TEK to undercut pricing offered to ePhone and TEK cannot deal with
     or sell to ePhone's distributors. TEK will bundle ePhone services to all
     customers who need services and will not act as a carrier itself.

7.   TEK agrees that Gateway solutions & Network Design developed and brought in
     by ePhone shall be treated as confidential and proprietary information and
     shall not be provided or disclosed to any other parties without prior
     approval of ePhone. The same solution cannot be sold without going through
     ePhone's worldwide channels.

8.   TEK agrees to assist ePhone in developing exclusive territorial sales
     territories in China, Vietnam and Taiwan, and other countries as may be
     mutually agreed. In cases where TEK has authorized other sellers of TEK
     iGates TEK will facilitate introductions of ePhone to those sellers, so
     that ePhone will be able to coordinate sales efforts. The negotiations with
     these other sellers and the development of those sales territories will be
     ePhone's responsibilities.

ePhone Undertakings

1.   As noted above, ePhone agrees to order and pre-pay for 500 units in advance
     of delivery at a price $700 per unit. The first 20 units will be delivered
     July 15, 1999, with additional units delivered as follows: 40 units by July
     30, 1999 and 440 units commencing on August 3, 1999 and covering the 4
     following weeks. Projected delivery requirements and conditions are
     appended to this agreement as Addendum C.

2.   Subject to ePhone's testing and approval of gateway compatibility, ePhone
     agrees to place a open Purchase Order or Purchase Orders with TEK of up to
     ___*___ units for the first year and ___*___ units for the second year,
     once this MOU has been signed. TEK will supply the documentation for these
     Purchase Orders. These Purchase Orders will provide price protection to
     ePhone and will allow ePhone to substitute other TEK products instead of
     iGates in case the demand from ePhone's customers changes. ePhone agrees to
     work closely with TEK to coordinate the specific requirements for parts and
     materials and, as well, will assist TEK in obtaining third party financial
     support, if financing is required to manufacture these products.

3.   ePhone agrees to pay for the 500 units already ordered in accordance with
     the following schedule:

<PAGE>

     Installment payments totaling    $250,000 by July 23, 1999
     First delivery payment           $50,000 on delivery of 20 units (July 23)
     Final delivery payment           $50,000 on delivery of final units

     Delivery Schedule:
     7/23/99               20 units
     7/30/99               40 units
     lst week of Aug       110 units
     2nd week of Aug       110 units
     3rd week of Aug       110 units
     4th week of Aug       110 units

4.   At ePhone's option the payment can be made by e Phone directly or by
     arrangement with a third party.

5.   ePhone's remedies in case of non- performance by TEK or the production of
     an unacceptable product will be specified in the implementation plan to be
     agreed with TEK and will be specifically identified as TEK deliverables in
     that plan (Addendum A). TEK is to supply ePhone with a list of features of
     the TEK iGate by July 19, 1999.

6.   ePhone agrees, on a best efforts basis only, to make available or arrange
     through third parties financing of up to $___*____ to TEK at a price of
     $__*__ per share, subject to terms to be mutually agreed within 14 days of
     the date of this agreement. ePhone understands that TEK will make available
     free trading shares for this placement, to the extend that TEK is able to
     obtain possession of free trading shares.

7.   ePhone agrees to place a Purchase Order for ___*___ units of the TEK iGate,
     once this MOU been signed. TEK agrees that this initial Purchase Order can
     be changed with 60 days of written notification to TEK based on the market
     requirement of ePhone. ePhone will evaluate the demand from its customers
     once it has had feed back from users of the first 500 units.

8.   ePhone agrees to assist TEK to finance the Bill of Material (BOM) order for
     the manufacture of ePhone's units through the use of ePhone's invoices with
     a financial institution. If ePhone is unable to assist TEK in this matter
     or if ePhone's credit is not acceptable for these transactions, ePhone
     agrees prepay TEK's invoices 60 days in advance.

                                      -4-

<PAGE>

Documentation to be drafted by legal counsel chosen by ePhone. (subject to
review by TEK legal counsel). This memorandum may be signed in counterpart.

TEK Digitel Corporation_______________       ePhone Telecom, Inc._______________

/s/ Thomas Yang     7/19/99                  /s/ Robert Clarke
------------------                           ------------------------
TEK, Thomas Yang                             ePhone, Robert Clarke

                                      -5-

<PAGE>

                                   Addendum A
                                   ----------

                              Implementation Plan
                              -------------------

Implementation Plan to include (but not be limited to):

1.   product development/network operation delivery milestones:

     a.   TEK will provide engineering resource to ensure that TEK's products
          are compatible to ePhone's Gateway/Gatekeeper.

     b.   The compatibility test will be completed prior to or by July 31, 1999.

     c.   ePhone will not be responsible for re-stocking or other costs if the
          compatibility test fails. ePhone agrees that the compatibility test
          will be based on H.323.

2.   actions and deliverables by specified personnel within TEK

     Thomas Yang  Program Manager
     Rocco DiCarlo and James Sturgess / Marketing and Sales Support
     K.O. Chao  Software design and product interface Support
     O. Wuyun   Engineer Support

3.   specific commitments in terms of time by specified individuals within

     Rocco DiCarlo and James Sturgess will have maximum of 50% of their time and
     resource to work on ePhone marketing and sales support. The costs to be
     incurred by ePhone for these resources will be determined on the basis of
     TEK's full, actual costs for these individuals, with no mark-up.

4.   technical support for ePhone in the field

     TEK will provide two days training class in Germantown to train ePhone's
     engineers.

5.   specific schedule of TEK iGate deliveries to ePhone - to be agreed.

<PAGE>

                                   Addendum B
                                   ----------

                            Volume Discount Schedule
                            ------------------------

  [*Volume Discount Schedule has been omitted pursuant to Registrant's request
    for confidential treatment and has been filed separately with the SEC.]

<PAGE>

                                   Addendum C
                                   ----------

                        Projected Delivery of TEK agates
                        --------------------------------

ePhone is currently projecting the following shipments of the ePhone iGate 2
channel gateways.

        [*Projections have been omitted pursuant to Registrant's request
    for confidential treatment and have been filed separately with the SEC.]

1. It is expected that ePhone will switch to the new platform beginning in
__*__. ePhone forecasts requirements of ___*___ units in the year __*__.

2. ePhone understands that TEK must commit to component deliveries in order to
meet the above dates and volumes. ePhone agrees to pay all cancellation and
re-stocking charges for any long lead time components that are incurred by TEK
to meet the above forecasts.

3. TEK accepts that it has to provide an acceptable product for ePhone which
will be satisfactory for ePhone to carry out its business plan. If this is not
so done by TEK then TEK will be liable to ePhone for ePhone's costs and damages.

4. The volumes from August onwards can only be met with the ePhone private label
product. This includes: Front label, Sleeve, and documentation. ePhone will
provide TEK with the artwork by July 30. ePhone will provide TEK with the
appropriate number of sleeves.

<PAGE>

   [Registrant has removed proprietary and confidential information, indicated
      by an asterisk "*", pursuant to a request for confidential treatment.
    Registrant has filed the confidential portion separately with the SEC.]

                                                        Date: September 11, 1999

          Amendment to Memorandum of Understanding dated July 19. 1999

Both Parties Acknowledge that:

The following is the amendment to the MOU which as been signed between both TEK
and ePHONE on July 19, 1999. Both parties agree to collaborate further by
abiding by the following undertakings by both parties.

A.       TEK's Undertakings:

         1.       ePHONE has exclusive worldwide distribution rights to the
                  "ePHONE Solution" which is referred to in the MOU of July 19,
                  1999 and defined in the "Request for Proposal" (the
                  combination/integration/development between TEK's
                  vSERVER/iGATE and Array Telecom's Gateway/Gatekeeper). ePHONE
                  will also have the first right of refusal to incorporate new
                  products developed by TEK into the "ePHONE Solution", subject
                  to mutually agreed terms.

         2.       TEK agrees to provide ePHONE with the exclusive ITSP (Internet
                  Telephony Service Provider) rights in the following regions:
                  Europe, Mid-East and Africa, subject to the undertakings
                  agreed to by ePHONE as described in Section B. These rights
                  are to be non-cancelable by TEK for two years (provided ePHONE
                  fulfills its obligations under this agreement) and subject to
                  annual renewal under mutually agreed terms thereafter.

         3.       The "Exclusive ITSP Rights" are defined as: TEK will not sell
                  any products (with TEK's brand name and/or through any other
                  OEM brand names) to any "Telephony- Related Businesses" which
                  might be in direct/indirect competition with ePHONE's and/or
                  its partners' ITSP businesses in those regions defined in item
                  A.2 of TEK's Undertakings. In cases where TEK identifies new
                  business opportunities in the exclusive regions TEK will have
                  the right to bring these to ePHONE for mutual negotiation.

         4.       As agreed in the July 19th MOU TEK agrees to provide ePHONE
                  Telecom with he most favorite OEM pricing and/or licensing
                  fees. TEK agrees to offer ePHONE price protection in all
                  categories (including OEM) of customers that TEK shall not
                  offer lower selling pricing to its customers to compete with
                  ePHONE's customers. TEK agrees to ePHONE that a quarterly
                  audit can be performed anytime to verify the effects of price
                  protection.

Page 1 of 4                                                       Date: 08/30/99

<PAGE>

         5.       TEK agrees to respond ePHONE's engineering requests, "Bug-List
                  Fixes" and/or modifications with first priority to avoid any
                  delays in operations, productions and/or worldwide deployment.

         6.       From time to time, ePHONE will contract TEK to
                  engineer/develop "unique software and/or hardware" for the
                  purpose of enhancing the "ePHONE Solution" and/or Worldwide
                  ITSP businesses. TEK agrees that ePHONE will maintain its
                  exclusive usage rights to this "unique software and/or
                  hardware".

         7.       In order to achieve prompt deployment in the exclusive ITSP
                  territories described in A.2, TEK grants to ePHONE the option
                  to manufacture vSERVER/iGATE itself or assign the
                  manufacturing rights to a manufacturer of its choosing. These
                  manufacturing rights cover the products listed in B.1 and are
                  subject to the conditions described in B.3 and B.4.

         8.       In the case of ePHONE exercising its option as described in
                  A.7, TEK agrees to promptly provide B.O.M. and/or any other
                  related material with ePHONE to ensure smooth operations,
                  production and/or deployment.

         9.       In recognition of ePHONE's market development work in Vietnam,
                  TEK grants to ePHONE exclusive ITSP (Internet Telephony
                  Service Provider) rights for this country. Specific sales
                  volumes of vSERVER/iGATE are to be agreed within 6 months of
                  the date of this agreement.

         10.      TEK agrees to negotiate with ePHONE exclusive agreements for
                  other Asian countries as may be identified by ePHONE. These
                  agreements are to be subject to mutually agreeable terms.

         11.      During the course of business development, TEK might become
                  known through ePHONE's introduction and/or ePHONE's
                  sales/marking efforts. TEK agrees not to circumvent or
                  approach ePHONE's prospects, contacts, financial resources
                  and/or customers including but not limited to: all the end
                  users/resellers/distribution channels, OEM/ODM and/or
                  potential investors. ePHONE agrees to give TEK the same mutual
                  protection.

         12.      In cases where ePHONE successfully develops OEM/ODM customers
                  for ePHONE/TEK, TEK agrees to share its licensing fee with
                  ePHONE on a case by case basis.

Page 2 of 4                                                       Date: 08/30/99

<PAGE>

B.       ePHONE's Undertakings:

         1.       For the exclusive ITSP territories and rights as defined in
                  items A.2 and A.3 ePHONE commits to minimum sales of
                  vSERVER/iGATE as follows:

                           Year 1:  ___*___ units
                           Year 2:  ___*___ units

                  These units can be a combination of the following:
                           a.    The current model,
                           b.    The end-user model with built-in, automatic
                                 dial-up and wake-up modem.
                           c.    Any special engineering designs, which is
                                 requested by ePHONE and/or its customers and/or
                                 to stay competitive in the ITSP markets.

                  ePHONE agrees that it must place and pay for a minimum volume
                  of ___*___ units within 6 months of the date of this agreement
                  or the agreement is cancelable by TEK. This payment will be
                  non-refundable.

         2.       If these units are supplied by TEK (either directly or by
                  sub-contractor) ePHONE agrees to provide TEK with a P.O. with
                  a 10% non-refundable deposit. Pricing is to be as per the MOU
                  or on more favorable terms in case of higher volumes that
                  ___*___ units.

         3.       If ePHONE manufactures the products described in B.1 or
                  assigns these manufacturing rights then ePHONE agrees to pay a
                  one time "manufacturing rights fee" and per unit "product
                  royalties" to TEK. These are described in B.4 and B.5
                  respectively. TEK will supply manufacturing support to
                  ePHONE's designated manufacturer in return for "booking" the
                  transaction at no extra cost to ePHONE or the manufacturer,
                  subject to agreement by all parties.

         4.       The "manufacturing rights fee" will be a total of
                  $     *        payable as follows:

                           $       *        payable within 45 days of signing
                           this agreement or the date of ePHONE's signing of an
                           agreement with a third party for these rights,
                           whichever comes first - subject to completion and
                           verification of the "ePHONE Solution" as per the
                           Request for Proposal.

                           $       *        payable within 45 days of the first
                           payment

                           $       *        payable every 30 days, commencing
                           30 days after the date of the second payment, until a
                           total of $      *       has been paid

         5.       The "product royalties" will be a payment of $   *   per unit,
                  payable when the unit is shipped from the manufacturer. This
                  royalty will include all other royalties payable by TEK to
                  third parties. This royalty will be in accordance with item
                  A.4 and will be adjusted if ePHONE does not have the most
                  favorite OEM pricing and/or licensing fees.

Page 3 of 4                                                       Date: 08/30/99

<PAGE>

         6.       ePHONE agrees that failure to meet any one of the undertakings
                  agreed to in items B.1 and/or B.4 will make this agreement
                  cancelable by TEK.

TEK DigiTel Corporation                               ePHONE Telecom. Inc.
-----------------------                               -------------------

/s/ Thomas Yang                                       /s/ Robert Clarke
--------------------------                            -------------------------
TEK, Thomas Yang                                      ePHONE, Robert Clarke

Page 4 of 4                                                       Date: 08/30/99<PAGE>

   [Registrant has removed proprietary and confidential information, indicated
     by an asterisk "*", pursuant to a request for confidiential treatment.
     Registrant has filed the confidential portion separately with the SEC.]

Partnership Agreement Between CentreCom Incorporated and TEK DigiTel
Corporation

This partnership agreement outlines the terms and conditions each company has
agreed in order to facilitate an open and mutually beneficial agreement.

TEK DigiTel agrees to the following:

     1. TEK will extend to CentreCom best pricing based on ___*___ units per
     year volumes. TEK will have the right to review pricing on a quarterly
     basis...based on volumes shipped and adjust prices accordingly. The best
     pricing is as follows for ___*___ unit commitment; Ethernet Only ($__*__),
     Dual Ethernet ($__*__), ISDN Versions ($__*__), Serial Versions ($__*__).

     2. For the first 200 units TEK will accept payment for Pronto units over 18
     months at $__*__/month. An upfront payment of two months $__*__ would be
     required. These units will be fully warranted for the entire 18 months.

     3. TEK will provide configuration, installation and activation services for
     $__*__/unit plus we can ship directly to CentreCom customers FOB
     Germantown. All shipping cost will be charged to CentreCom.

     4. TEK will maintain a Return and Repair inventory for expediting Warranty
     service. TEK will warrant purchased units for 1 year. A 1 year extended
     warranty could be purchased for $__*__.

CentreCom agrees to the following:

     1. CentreCom agrees to order ___*___ units over the next 12 months.

     2. CentreCom agrees to place an order for 200 pronto units to be delivered
     over the next 60 days on an as needed basis.

     3. Any opportunity that TEK brings to the table as well as all
     opportunities resulting from ISPCON...TEK will receive 5% of all calling
     revenues generated over a 3 year period.

CentreCom Incorporated                         TEK DigiTel

Don Feuer
/s/ Don Feuer                                  Rocco DiCarlo
_________________                              ___________________
President                                      President
Date Signed:                                   Date Signed:
11/20/99
                                               /s/ Thomas Yang
                                               __________________
                                               COO

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