P COM INC
S-3/A, 1999-03-03
RADIO & TV BROADCASTING & COMMUNICATIONS EQUIPMENT
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<PAGE>
 
     As filed with the Securities and Exchange Commission on March 3, 1999
                                                     Registration No. 333-70937
===============================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                             ----------------------
                               AMENDMENT NO. 1 TO
                                    FORM S-3
                             REGISTRATION STATEMENT
                                     Under
                     The Securities Act of 1933, as amended
                               ------------------------
                                  P-COM, INC.
             (Exact name of Registrant as specified in its charter)
                              --------------------
<TABLE>
<S>                                                                                        <C>
Delaware                                                                                                  77-0289371
(State or other jurisdiction of                                                                         (I.R.S. Employer
incorporation or organization)                                                                       Identification Number)
</TABLE>
                               ---------------------

               3175 S. Winchester Boulevard, Campbell, CA  95008
                                 (408) 866-3666
  (Address, including zip code, and telephone number, including area code, of
                   registrant's principal executive offices)
                                --------------------
                               George P. Roberts
               Chairman of the Board and Chief Executive Officer
                                  P-Com, Inc.
                          3175 S. Winchester Boulevard
                              Campbell, CA  95008
                                 (408) 866-3666
  (Name and address, including zip code, and telephone number, including area
                          code, of agent for service)
                                ---------------------
                                    Copy to:
                            Warren T. Lazarow, Esq.
                        Brobeck, Phleger & Harrison LLP
                             Two Embarcadero Place
                                 2200 Geng Road
                          Palo Alto, California 94303
                                 (650) 424-0160
                              ------------------------
        Approximate date of commencement of proposed sale to the public:
   FROM TIME TO TIME AFTER THE EFFECTIVE DATE OF THIS REGISTRATION STATEMENT.

  If the only securities being registered on this Form are being offered
pursuant to dividend or interest reinvestment plans, please check the following
box.  [_]
  If any of the securities being registered on this Form are to be offered on a
delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, as amended, other than securities offered only in connection with dividend
or interest reinvestment plans, check the following box. [X]
  If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act of 1933, as amended, check the
following box and list the Securities Act of 1933, as amended, registration
statement number of the earlier effective registration statement for the same
offering. [_]
  If this Form is a post-effective amendment filed pursuant to Rule 462(c) under
the Securities Act of 1933, as amended, check the following box and list the
Securities Act of 1933, as amended, registration statement number of the earlier
effective registration statement for the same offering.[_]
  If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box.[_]
                        --------------------------
                                        
The Registrant hereby amends this registration statement on such date or dates
as may be necessary to delay its effective date until the Registrant shall file
a further amendment that specifically states that this registration statement
shall thereafter become effective in accordance with Section 8(a) of the
Securities Act of 1933, as amended,  or until this registration statement shall
become effective on such date as the Commission, acting pursuant to said Section
8(a), may determine.
<PAGE>
 
PRELIMINARY PROSPECTUS
(SUBJECT TO COMPLETION, DATED MARCH 3, 1999)

                               13,000,000 Shares

                                  P-COM, INC.
                               ------------------
                                 COMMON STOCK
                               ------------------
                                        

          Certain stockholders of P-COM, Inc. are offering for resale and
selling under this prospectus up to 13,000,000 shares of our common stock to be
issued upon conversion of our Series B preferred stock, exercise of warrants to
purchase our common stock and as payment of premiums, failures to satisfy
certain obligations, dividends and anti-dilution adjustments on the Series B
preferred stock and warrants.


          The selling stockholders may determine the prices at which they will
sell their shares, which may be the prevailing market price for the shares or in
negotiated transactions.  We will not receive any of the proceeds from sales of
the shares.


          Our common stock is traded on the Nasdaq National Market (Nasdaq
Symbol: PCMS). On January 20, 1999, the closing price of the common stock was
$7.9063 per share.

 
                           ------------------------
          You should carefully consider the risk factors commencing on page 3
before purchasing any of the common stock offered by the selling stockholders.

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

          Neither the Securities and Exchange Commission nor any state
securities commission has approved or disapproved of these securities or passed
upon the adequacy or accuracy of this prospectus.  Any representation to the
contrary is a criminal offense.
 
                        ---------------------------

              The date of this prospectus is _____________, 1999.

          The information in this prospectus is not complete and may be changed.
The selling stockholders may not sell these securities until the registration
statement filed with the Securities and Exchange Commission is effective.  This
prospectus is not an offer to sell these securities and it is not soliciting an
offer to buy these securities in any state where the offer or sale is not
permitted.

                                       1
<PAGE>
 
                                   THE COMPANY

          P-Com, Inc. develops, manufactures and markets network access systems
for the worldwide wireless telecommunications market.  The point-to-point,
spread spectrum and point-to-multipoint radio links provided by P-Com are
designed to satisfy the network requirements of cellular and personal
communications services, corporate communications, public utilities and local
governments.  In addition, P-Com provides comprehensive network services
including system and program planning and management, path design and
installation.  P-Com also provides network performance monitoring devices.

          Our radio systems are sold internationally through strategic partners,
system providers, original equipment manufacturers and distributors as well as
directly to end-users, and domestically primarily through our direct sales
force.  Our customers include AT&T Corp., Bell Atlantic Corp., BellSouth Corp.,
Bank of China, Bosch Telecom GmbH, Embratel Particiacoes S.A., Far Eastone
Telecommunications Co., Ltd., Lucent Technologies, Inc., Mercury one2one, Orange
PLC Group, Siemens A.G., Fujitsu Limited, Telekom S.A. Ltd., Tellabs Inc.,
TransAsia Telecomm, Inc., U.S. West Inc., WinStar Communications Corp., MCI
Worldcom Inc., and Post & Telecomm Corp. of Zimbabwe.

          In December 1993, we received our initial ISO 9001 registration, a
standard established by the International Organization for Standardization that
provides a methodology by which manufacturers can obtain quality certification
of their design and manufacturing process.  In accordance with ISO 9001
requirements, our ISO 9001 registration was subsequently recertified.  We also
completed ISO 9001 registration for our United Kingdom sales and customer
support facility in 1996, our Geritel facility in Italy in 1996 and our
Technosystem facility in Italy in 1997 and are in the process of obtaining ISO
9001 registration for our other facilities outside of the United States.

          P-Com, Inc. was incorporated in the State of Delaware on August 23,
1991.  Our executive offices are located at 3175 S. Winchester Boulevard,
Campbell, California 95008, and our telephone number is (408) 866-3666.

                                       2
<PAGE>
 
                                   RISK FACTORS

          You should carefully consider the risks described below before making
an investment decision. The risks and uncertainties described below are not the
only ones facing P-Com. Additional risks and uncertainties not presently known
to us or that we currently deem immaterial may also impair our business
operations.

          If any of the following risks actually occur, our business, financial
condition and results of operations could be materially adversely affected.  In
such case, the trading price of our common stock could decline, and you may lose
all or part of your investment.

          This prospectus also contains "forward-looking" statements that
involve significant risks and uncertainties.  Our actual results could differ
materially from those anticipated in these forward-looking statements as a
result of certain factors, including the risks faced by us described below and
elsewhere in this prospectus.

We cannot predict our success because we have operated for a short period of
time

          We were founded in August 1991 and remained in the development stage
until October 1993 when commercial shipments of our first product began.  Due to
our limited operating history and limited resources, among other factors,
profitability or significant revenues on a quarterly or annual basis may not
occur in the future.  We are subject to all of the risks inherent in the
operation of a new business enterprise, and may not be able to successfully
address these risks.

We have experienced historical losses and may continue to experience losses in
the future

          From our beginning to the end of the third quarter of fiscal 1998, we
generated a cumulative net loss of approximately $40.6 million.  From the end of
1997 through the third quarter of 1998, our net loss was due primarily to (i) an
acquired in-process research and development charge of approximately $33.9
million recorded in the first quarter of 1998 related to the acquisition of the
assets of the Wireless Communications Group of Cylink Corporation, referred to
herein as the "Cylink Wireless Group," and (ii) a net loss of $42.1 million in
the third quarter of 1998, which included restructuring and other one-time
charges of $26.6 million (comprising a $16.9 million charge to cost of goods
sold (including $14.5 million in inventory write downs related to our existing
core business and $2.4 million in other one-time charges to inventory relating
to the elimination of product lines), a $5.4 million charge to general and
administrative expenses and a $4.3 million charge (including severance benefits,
facilities and fixed assets impairments and goodwill impairments) to
restructuring and other one-time charges).

          From October 1993 through September 30, 1998, we generated sales of
approximately $607.2 million, of which 61.4% was generated in the year ended
December 31, 1997 and the first three quarters of 1998.  However, we do not
believe such growth rates are indicative of future operating results.  Revenues
may not remain at or increase from the levels experienced in 1997 or in the
first three quarters of 1998 and sales have and may continue to decline.  In
fact, during the first nine months of 1998, we experienced our lowest rates of
sequential sales growth since we became a public company.  In addition, during
the third quarter of 1998, we experienced a decrease in revenue as compared to
the first two quarters of 1998.  This decrease in revenue was principally the
result of the market slowdown for our Tel Link 

                                       3
<PAGE>
 
product line and for the industry segment in general. Net sales for the third
quarter of 1998 (which included sales from many newly acquired businesses that
did not contribute to revenues in the comparable period of 1997) were
approximately 50% less than our sales for the comparable period in 1997. We
expect our sales growth in the near future to be significantly below recent
comparable periods of growth. In recent quarters, we also experienced higher
than historical product price declines. The decline in prices, along with one-
time inventory write-downs, has had a significant downward impact on our gross
margin. We expect pricing pressures to continue for the next several quarters.
We also expect gross margins as a percentage of revenues to continue to be below
comparable periods for the next several quarters.

          During 1997 and the first three quarters of 1998, operating expenses
increased more rapidly than we had anticipated and these increases also
contributed to net losses.  We plan to continue our investments in operations,
particularly to support product development and the marketing and sales of
recently introduced products.  In parallel, we have undertaken cost-cutting
efforts in other areas.  However, if sales do not increase, our results of
operations, business and financial condition may be materially adversely
affected.  Accordingly, we may not achieve profitability for the next several
quarters.  We believe we will likely report an operating loss during the fourth
quarter of fiscal year 1998 and could report a net loss for such quarter.

A substantial amount of our products and services are purchased by a limited
number of customers

          To date, approximately four hundred customers have accounted for
substantially all of our sales.  However, in 1997, two customers, Orange
Personal Communications Ltd. and Winstar Communications Corp., accounted for 16%
and 11% of our 1997 sales, respectively.  During the first three quarters of
1998, four customers accounted for approximately 45% of sales and as of
September 30, 1998, seven customers accounted for approximately 46% of the
backlog scheduled for shipment in the twelve months subsequent to September 30,
1998.  Many of our major customers are located in foreign countries, primarily
in the United Kingdom and Europe.  We anticipate continuing to sell products and
services to existing customers and adding new customers, most of which we expect
to continue to be located outside of the United States.

          Similarly, several of our subsidiaries are dependent on a few
customers. Some of these customers are implementing new networks and are
themselves in the early stages of development.  They may require additional
capital to fully implement their planned networks, which may be unavailable to
them on an as-needed basis.

          If our customers cannot finance their purchases of our or our
subsidiaries' products or services, then this may materially adversely affect
our business, operations and financial condition.  Financial difficulties of
existing or potential customers may also limit the overall demand for our
products and services. Specifically, both current customers and potential future
customers in the telecommunications industry have reportedly undergone financial
difficulties and may therefore limit their future orders.  Our ability to
achieve sales in the future will depend in significant part upon our ability to:

   .  obtain and fulfill orders from, maintain relationships with and provide
      support to existing and new customers;

   .  manufacture systems in volume on a timely and cost-effective basis; and

                                       4
<PAGE>
 
    .  meet stringent customer performance and other requirements and shipment
       delivery dates.

          Our success will also depend in part on the financial condition,
working capital availability and success of our customers.  As a result, any
cancellation, reduction or delay in orders by or shipments, for example, as a
result of manufacturing or supply difficulties or a customer's inability to
finance it purchases of our products or services, may adversely affect our
business.  Some difficulties of this nature have occurred  in the past and we
believe they will occur in the future.

          Finally, acquisitions in the communications industry are common, which
further concentrates the customer base and may cause some orders to be delayed
or cancelled.  No assurance can be given that our sales will increase in the
future or that we will be able to support or attract customers. See "- We
experience significant fluctuations in our results of operations."

We experience significant fluctuations in our results of operations

          We have experienced and will continue to experience significant
fluctuations in sales, gross margins and operating results.  The procurement
process for most of our current and potential customers is complex and lengthy.
As a result, the timing and amount of sales is often difficult to predict
reliably.  The sale and implementation of our products and services generally
involves a significant commitment of senior management, as well as our sales
force and other resources.  The sales cycle for our products and services
typically involves technical evaluation and commitment of cash and other
resources and delays often occur.  Delays are frequently associated with, among
other things:

    .  customers' seasonal purchasing and budgetary cycles;

    .  education of customers as to the potential applications of our products
       and services, as well as product-life cost savings associated therewith;

    .  compliance with customers' internal procedures for approving large
       expenditures and evaluating and accepting new technologies;

    .  compliance with governmental or other regulatory standards;

    .  difficulties associated with customers' ability to secure financing;

    .  negotiation of purchase and service terms for each sale; and

    .  price decreases required to secure purchase orders.

       Seasonality

          Orders for products have typically been strongest towards the end of
the calendar year, with a reduction in shipments occurring during the summer
months, as evidenced in the third quarter of fiscal years 1997 and 1998.  This
slow down is primarily related to inactivity in the European market, currently
our major customer base, during such period.  To the extent such seasonality
continues, the results of operations will fluctuate from quarter to quarter.

       Customer concentration

          A single customer's order scheduled for shipment in a quarter can
represent a large portion of our potential sales for such quarter.  We have at
times failed to receive expected 

                                       5
<PAGE>
 
orders, and delivery schedules have been deferred as a result of changes in
customer requirements and commitments, among other factors. As a result, our
operating results for a particular period have been and could in the future be
materially adversely affected by a delay, rescheduling or cancellation of even
one purchase order. In addition, our operating results may be affected by an
inability to obtain such large orders from single customers in the future.

     Uncertainty in Telecommunications Industry

          Although much of the anticipated growth in the telecommunications
infrastructure is expected to result from the entrance of new service providers,
many new providers do not have the financial resources of existing service
providers.  If these new service providers are unable to adequately finance
their operations, they may cancel or delay orders.  Moreover, purchase orders
are often received and accepted far in advance of shipment and, as a result, we
typically permit orders to be modified or canceled with limited or no penalties.
Indeed, most of the backlog scheduled for shipment in the twelve months
subsequent to September 30, 1998 can be cancelled.  As a result, backlog does
not necessarily indicate future sales for any particular period.  In addition,
any failure to reduce actual costs to the extent anticipated when an order is
received substantially in advance of shipment or an increase in anticipated
costs before shipment could materially adversely affect our gross margin for
such orders.

     Inventory

          Our customers have also increasingly been requiring product shipment
upon ordering rather than submitting purchase orders far in advance of expected
shipment dates.  This practice requires us to keep inventory on hand for
immediate shipment.  Given the variability of customer need and purchasing
power, it is hard to predict the amount of inventory needed to satisfy customer
demand.  If we over- or under-estimate inventory requirements our results of
operations could continue to be adversely affected.  In particular, increases in
inventory could materially adversely affect operations if such inventory is not
used or becomes obsolete.

     Shipment delays

          Most of our sales in recent quarters have been realized near the end
of each quarter.  Accordingly, a delay in a shipment near the end of a
particular quarter for any reason may cause sales in a particular quarter to
fall significantly below our expectations.  Such delays have occurred in the
past due to, for example, unanticipated shipment rescheduling, pricing
concessions to customers, cancellations or deferrals by customers, competitive
and economic factors, unexpected manufacturing or other difficulties, delays in
deliveries of components, subassemblies or services by suppliers and failure to
receive anticipated orders.  We cannot determine whether similar or other delays
might occur in the future, but expect that some or all of such problems might
recur.

     Expenses

          Magnifying the effects of any revenue shortfall, a material portion of
our expenses are fixed and difficult to reduce should revenues not meet
expectations.  The failure to reduce actual costs to the extent anticipated, or
an increase in anticipated costs before shipment of an order or orders could
affect the gross margins for such orders.  If we or our competitors announce new
products, services and technologies, it could cause customers to defer or cancel

                                       6
<PAGE>
 
purchases of our systems and services.  Additional factors have caused and will
continue to cause our performance to vary significantly from period to period.
These factors include:  

 .  new product introductions and         .  market acceptance by customers  
   enhancements and related costs;          and timing of availability of   
                                            new products and services       
 .  weakness in Asia and Latin               provided by us or our competitors;
   America, resulting in                                                    
   overcapacity;                         .  acquisitions, including costs and
                                            expenses;                       
 .  ability to manufacture and                                               
   produce sufficient volumes            .  use of different distribution and
   of systems and meet                      sales channels;                 
   customer requirements;                                                   
                                         .  fluctuations in foreign currency 
 .  manufacturing efficiencies and           exchange rates;                 
   costs;                                                                   
                                         .  delays or changes in regulatory 
 .  customer confusion due to impact         approval of systems and services;
   of actions of competitors;                                               
                                         .  warranty and customer support   
 .  variations in mix of sales               expenses;                       
   through direct efforts or                                                
   through distributors or               .  severance costs;                
   other third parties;                                                     
                                         .  consolidation and other         
 .  variations in mix of systems             restructuring costs;            
   and related software tools                                               
   sold and services provided;           .  the pending stockholder class   
                                            action lawsuits;                
 .  operating and new product                                                
   development expenses;                 .  need for additional financing;  
                                                                            
 .  product discounts;                    .  customization of systems;       
                                                                            
 .  accounts receivable collection,       .  general economic and political  
   in particular those acquired in          conditions; and                 
   recent acquisitions;                                                     
                                         .  natural disasters.               
 .  changes in our pricing or 
   customers' or suppliers' pricing;

 .  inventory write-downs and 
   obsolescence;

          Our results of operations have been and will continue to be influenced
by competitive factors, including pricing, availability and demand for other
competitive products and services. All of the above factors are difficult for us
to forecast, and could materially adversely affect  our business, condition and
results of operations.  We believe that period-to-period comparisons are thus
not necessarily meaningful and should not be relied upon as indications of
future performance.

          Because of all of the foregoing factors, in some future quarter or
quarters our operating results may continue to be below those projected by
public market analysts, and the price of our common stock may be materially
adversely affected.  Net sales for the three month period ending December 31,
1998 were significantly lower than net sales in the comparable period in 1997.
Because of lack of order visibility and the current trend of order delays,

                                       7
<PAGE>
 
deferrals and cancellations, we cannot assure you that we will be able to
achieve or maintain our current sales levels.

          We reported an operating and net loss for the quarter ending December
31, 1998.  Should current market conditions continue to deteriorate, we may also
incur operating and net losses in subsequent periods.  Additionally, management
continues to evaluate market conditions in order to assess the need to take
further action to more closely align our cost structure with anticipated
revenues.  Any subsequent actions could result in restructuring charges,
inventory write-downs and provisions for the impairment of long-lived assets,
which could materially adversely affect our business, financial condition and
results of operations.

We face many acquisition related risks

     We may be unable to realize the full value of our past acquisitions

          Since April 1996, we have acquired nine complementary companies and
businesses. Integration and management of these companies into our business is
ongoing.  We have encountered or expect to encounter the following problems
relating to such transactions:

 .  difficulty of assimilating            .  maintenance of uniform standards,
   controls, procedures and policies;       operations and personnel of combined
                                              companies;

 .  potential disruption of ongoing       .  impairment of relationships with
   business;                                employees and customers as result of
                                            integration of new personnel;

 .  inability to retain key technical     .  risks of entering markets in which
   and managerial personnel;                we have no or limited direct prior
                                            experience; and

 .  inability of management to maximize   .  operation of companies in different
   financial and strategic position         geographical locations with 
   through integration of acquired          different cultures.
   businesses;                             
                                              
 .  additional expenses associated with
   amortization of acquired intangible
   assets;

 .  dilution to existing stockholders;

          We may not be successful in overcoming any or all of these risks or
any other problems encountered in connection with such acquisitions, and such
transactions may materially adversely affect our business, condition and results
of operations or require divestment of one or more business units.

     To be successful, we may have to acquire new businesses

          As part of our overall strategy, we plan to continue acquisitions of
or investments in complementary companies, products or technologies and to
continue entering into joint ventures and strategic alliances with other
companies.  Our success in future acquisition transactions may, however, be
limited.  We compete for acquisition and expansion opportunities against many
entities that have substantially greater resources. We may not be able to
successfully identify suitable candidates, pay for or complete acquisitions, or
expand into new 

                                       8
<PAGE>
 
markets. Once integrated, acquired businesses may not achieve
comparable levels of revenues, profitability, or productivity to our existing
business, or the stand alone acquired company, or otherwise perform as expected.
Also, as commonly occurs with mergers of technology companies during the pre-
merger and integration phases, aggressive competitors may also undertake formal
initiatives to attract customers and to recruit key employees through various
incentives. Moreover, if we proceed with acquisitions in which the consideration
consists of cash, a substantial portion of our available cash could be used to
consummate our acquisitions, as was the case with the acquisition of the Cylink
Wireless Group.  The occurrence of any of these events could have a material
adverse effect on our workforce, business, financial condition and results of
operations.  See "-We cannot assure you that we will be able to successfully
manage our growth."

     Accounting issues related to acquisitions

          In addition, many business acquisitions must be accounted for under
the purchase method of accounting for financial reporting purposes.  Many of the
attractive acquisition candidates us are high technology companies which tend to
have insignificant amounts of tangible assets and significant goodwill or
acquisition of these businesses, would typically result in substantial charges
related to the amortization of goodwill.  For example, all of our past
acquisitions to date, except the acquisitions of Control Resources Corporation,
RT Masts Limited and Telematics, Inc. have been accounted for under the purchase
method of accounting, and as a result, a significant amount of goodwill is being
amortized.  This amortization expense may have a significant effect on our
financial results.

          Although we believe the accounting for past acquisitions has been
appropriate, in general the Securities and Exchange Commission has recently been
reviewing more closely the accounting for acquisitions and the resulting charges
for "in-process" research and development costs.  Any resulting restatement of
the "in-process" research and development charge we recognized in conjunction
with any of our acquisitions, including the Cylink Wireless Group acquisition,
could result in a lesser charge to income for "in-process" technology and the
creation of a higher recorded value of goodwill or other intangible assets.  The
allocation of the purchase price to such additional intangible assets would have
the effect of increasing amortization expense, which could have a material
adverse effect on results of operations, business and financial condition.

We depend on contract manufacturers and limited sources of supply

          Our internal manufacturing capacity is very limited. We use contract
manufacturers such as Celeritek, Inc., GSS Array Technology, Remec, Inc.,
Sanmina Corporation, Senior Systems Technology, Inc. and SPC Electronics Corp.
to produce our systems, components and subassemblies and expect to rely
increasingly on these and other manufacturers in the future. We also rely on
outside vendors to manufacture certain other components and subassemblies. Our
internal manufacturing capacity and that of our contract manufacturers may not
be sufficient to fulfill our orders.  Our failure to manufacture, assemble and
ship systems and meet customer demands on a timely and cost-effective basis
could damage relationships with customers and have a material adverse effect on
our business, condition and results of operations.

                                       9
<PAGE>
 
          In addition, certain components, subassemblies and services necessary
for the manufacture of our systems are obtained from a sole supplier or a
limited group of suppliers. In particular, Eltel Engineering S.r.L. and
Associates and Xilinx, Inc. are sole source or limited source suppliers for
critical components used in our radio systems.

          Our reliance on contract manufacturers and on sole suppliers or a
limited group of suppliers and increasing reliance on contract manufacturers and
suppliers involves risks.  We have experienced an inability to obtain an
adequate supply of finished products and required components and subassemblies.
As a result, we have reduced control over the price, timely delivery,
reliability and quality of finished products, components and subassemblies. We
do not have long-term supply agreements with most of our manufacturers or
suppliers.  We have experienced problems in the timely delivery and quality of
products and certain components and subassemblies from vendors. Some suppliers
have relatively limited financial and other resources. Any inability to obtain
timely deliveries of components and subassemblies of acceptable quality or any
other circumstance would require us to seek alternative sources of supply, or to
manufacture finished products or components and subassemblies internally.  As
manufacture of our products and certain of our components and subassemblies is
an extremely complex process, finding and educating new vendors could delay our
ability to ship our systems, which could damage relationships with current or
prospective customers and materially adversely affect our business, condition
and results of operations.

We cannot assure you that we will be able to successfully manage our growth

          Recently, in response to market declines and poor performance in our
sector generally and our lower than expected performance over the last several
quarters, we introduced measures to reduce operating expenses, including
reductions in our workforce in July, September and November 1998.  However,
prior to such measures, we had significantly expanded the scale of our
operations to support then anticipated continuing increased sales and to address
critical infrastructure and other requirements. This expansion included leasing
additional space, opening branch offices and subsidiaries in the United Kingdom,
Italy, Germany, Mexico, Dubai and Singapore, opening design centers in the
United Kingdom and the United States, acquiring a large amount of inventory and
accounts receivable, and acquiring nine businesses.  We had also invested
significantly in research and development to support product development and
services. Further, we had hired additional personnel in all functional areas,
including in sales and marketing, manufacturing and operations and finance.  We
experienced significantly higher operating expenses than in prior years as a
result of this expansion.  A material portion of these expenses remain
significant fixed costs.

          In addition, to prepare for the future, we are required to continue to
invest resources in our acquired and new businesses.  Currently, we are devoting
significant resources to the development of new products and technologies and
are conducting evaluations of these products.  We will continue to invest
additional resources in plant and equipment, inventory, personnel and other
items, to begin production of these products and to provide any necessary
marketing and administration to service and support these new products.
Accordingly, in addition to the effect our recent performance has had on gross
profit margin and inventory levels, our gross profit margin and inventory levels
may be further adversely impacted in the future by start-up costs associated
with the initial production and installation of these new products. Start-

                                       10
<PAGE>
 
up costs may include additional manufacturing overhead, additional allowance
for doubtful accounts, inventory and warranty reserve requirements and the
creation of service and support organizations. Additional inventory on hand for
new product development and customer service requirements also increases the
risk of inventory write-downs. Based on the foregoing, if our sales do not
increase, our results of operations will continue to be materially adversely
affected. See "-We have experienced historical losses and may continue to
experience losses in the future."

          Expansion of our operations and acquisitions have caused and continue
to impose a significant strain on our management, financial, manufacturing and
other resources and have disrupted our normal business operations.  Our ability
to manage any possible future growth may depend upon significant expansion of
our manufacturing, accounting and other internal management systems and the
implementation of a variety of systems, procedures and controls, including
improvements relating to inventory control.  In particular, we must successfully
manage the control of overhead expenses and inventories, the development,
introduction, marketing and sales of new products, the management and training
of our employee base, the integration and coordination of a geographically and
ethnically diverse group of employees and the monitoring of third party
manufacturers and suppliers.  We cannot be certain that attempts to manage or
expand our marketing, sales, manufacturing and customer support efforts will be
successful or result in future additional sales or profitability.  We must also
more efficiently coordinate activities in our companies and facilities in Rome
and Milan, Italy, France, Poland, the United Kingdom, Mexico, Dubai, New Jersey,
Florida, Virginia, Washington and elsewhere.  For a number of reasons, we have
in the past and may continue to experience significant problems in these areas.
As a result of the foregoing, as well as difficulty in forecasting revenue
levels, we will continue to experience fluctuations in revenues, costs, and
gross margins.

          Any failure to implement efficiently, coordinate and improve systems,
procedures and controls, including improvements relating to inventory control
and coordination with our subsidiaries, at a pace consistent with our business,
could cause continued inefficiencies, additional operational complexities and
expenses, greater risk of billing delays, inventory write-downs and financial
reporting difficulties.  Such problems could have a material adverse effect on
our business, condition and results of operations.

          A significant ramp-up production of products and services could
require us to make substantial capital investments in equipment and inventory,
in recruitment and training additional personnel and possibly in investment in
additional manufacturing facilities.  If under-taken, we anticipate these
expenditures would be made in advance of increased sales.  In such event, gross
margins would be adversely affected from time-to-time due to short-term
inefficiencies associated with the addition of equipment and inventory,
personnel or facilities, and cost categories may periodically increase as a
percentage of revenues.

The selling prices of our products and services could decline over time

          We believe that average selling prices and possibly gross margins for
our systems and services will decline in the long term.  Reasons for such
decline may include the maturation of such systems, the effect of volume price
discounts in existing and future contracts and the 

                                       11
<PAGE>
 
intensification of competition. To offset declining average selling prices, we
believe we must take a number of steps, including:

   .  successfully introducing and selling new systems on a timely basis;

   .  developing new products that incorporate advanced software and other
      features that can be sold at higher average selling prices; and

   .  reducing the costs of our systems through contract manufacturing, design
      improvements and component cost reduction, among other actions.

          If we cannot develop new products in a timely manner, fail to achieve
customer acceptance or do not generate higher average selling prices, then we
would be unable to offset declining average selling prices.  In we are unable to
offset declining average selling prices, our gross margins will decline.  See "-
We experience significant fluctuations in results of operations."

We may be unable to collect our account receivables in a timely manner

          We are subject to credit risk in the form of trade account
receivables.  We may in certain circumstances be unable to enforce a policy of
receiving payment within a limited number of days of issuing bills, especially
for customers in the early phases of business development. In addition, many of
our foreign customers are granted longer payment terms than those typically
existing in the United States.  We typically do not require collateral or other
security to support customer receivables, but in some instances we have required
down payments or letters of credit from a customer before booking their order.
We have had difficulties in the past in receiving payment in accordance with our
policies, particularly from customers awaiting financing to fund their expansion
and from customers outside of the United States.  The days sales outstanding of
receivables have also recently increased.  Such difficulties may continue in the
future, which could have a material adverse effect on our business, financial
condition and results of operations.

          Our bank line of credit currently permits us to sell up to $25 million
of our receivables at any one time to a limited group of purchasers on a non-
recourse basis.  We have in the past utilized such sales and may continue from
time to time to sell our receivables, as part of an overall customer financing
program.  However, we may not be able to locate parties to purchase such
receivables on acceptable terms or at all. See "We experience significant
fluctuations in our results of operations" and "We face uncertainty because of
our international operations."

We may experience problems with product quality, performance and reliability

          We have limited experience in producing and manufacturing systems and
contracting for such manufacture. Our customers require very demanding
specifications for quality, performance and reliability. As a consequence,
problems may occur with respect to the quality, performance and reliability of
our systems or related software tools. If such problems occur, we could
experience increased costs, delays or cancellations or reschedulings of orders
or shipments, delays in collecting accounts receivable and product returns and
discounts.  If any of 

                                       12
<PAGE>
 
these events occur, it would have a material adverse effect on our business,
condition and results of operations.

          In addition, to maintain our ISO 9001 registration, we must
periodically undergo certification assessment. Failure to maintain such
registration could materially adversely affect our business.  We completed ISO
9001 registration for our United Kingdom sales and customer support facility in
1996, our Geritel facility in Italy in 1996, and its Technosystem facility in
Italy in 1997.  Other of our facilities are also attempting to obtain ISO 9001
registration.  Such registrations may not be achieved and we may be unable to
maintain those registrations we have already completed.  Any such failure could
have a material adverse effect on our business, condition and results of
operations.

Changes in financial accounting standards could adversely affect the way we
report our operating results

          We prepare our financial statements in conformity with generally
accepted accounting principles ("GAAP").  GAAP is subject to interpretation by
the American Institute of Certified Public Accountants, the Securities and
Exchange Commission and various bodies formed to interpret and create
appropriate accounting policies.  A change in these policies can have a
significant effect on our reported results, and may even affect our reporting of
transactions completed before a change is announced.  Accounting policies
affecting many other aspects of our business, including rules relating to
software and license revenue recognition, purchase and pooling-of-interests
accounting for business combinations, employee stock purchase plans and stock
option grants have recently been revised or are under review by one or more
groups.  Changes to these rules, or the questioning of current practices, may
have a material adverse effect on our reported financial results or in the way
we conduct our business.

          In addition, the preparation of financial statements in conformity
with GAAP requires us to make estimates and assumptions that affect the recorded
amounts of assets and liabilities, disclosure of those assets and liabilities at
the date of the financial statements and the recorded amounts of expenses during
the reporting period.  A change in the facts and circumstances surrounding these
estimates could result in a change to the estimates and impact future operating
results.

Our products and services may not achieve market acceptance

          Our future operating results depend upon the continued growth and
increased availability and acceptance of microcellular, PCN/PCS and wireless
local loop access telecommunications services in the United States and
internationally.  The volume and variety of wireless telecommunications services
or the markets for and acceptance of such services may not continue to grow as
expected.  The growth of such services may also fail to create anticipated
demand for our systems.  Because these markets are relatively new, predicting
which segments of these markets will develop and at what rate these markets will
grow is difficult.  In addition to our other products, we have recently invested
significant time and resources in the development of point-to-multipoint radio
systems.  If the licensed millimeter wave, spread spectrum microwave radio or
point-to-multipoint microwave radio market and related services for our 

                                       13
<PAGE>
 
systems fails to grow, or grows more slowly than anticipated, our business,
condition and results of operations will be materially adversely affected.

          Certain sectors of the communications market will require the
development and deployment of an extensive and expensive communications
infrastructure.  In particular, the establishment of PCN/PCS networks will
require very large capital expenditures.  Communications providers may not make
the necessary investment in such infrastructure, and the creation of this
infrastructure may not occur in a timely manner.  Moreover, one potential
application of our technology -- use of our systems in conjunction with the
provision of alternative wireless access in competition with the existing
wireline local exchange providers -- depends on the pricing of wireless
telecommunications services at rates competitive with those charged by wireline
telephone companies. Rates for wireless access must become competitive with
rates charged by wireline companies for this approach to be successful.  If
wireless access rates are not competitive, consumer demand for wireless access
will be materially adversely affected. If we allocate resources to any market
segment that does not grow, we may be unable to reallocate resources to other
market segments in a timely manner, ultimately curtailing or eliminating our
ability to enter such segments.

          Certain current and prospective customers are delivering services and
features that use competing transmission media such as fiber optic and copper
cable, particularly in the local loop access market.  To successfully compete
with existing products and technologies, we must offer systems with superior
price/performance characteristics and extensive customer service and support.
Additionally, we must supply such systems on a timely and cost-effective basis,
in sufficient volume to satisfy such prospective customers' requirements and
otherwise overcome any reluctance on the part of such customers to transition to
new technologies.  Any delay in the adoption of our systems may result in
prospective customers using alternative technologies in their next generation of
systems and networks.

          Prospective customers may not design their systems or networks to
include our systems.  Existing customers may not continue to include our systems
in their products, systems or networks in the future.  Our technology may not
replace existing technologies and achieve widespread acceptance in the wireless
telecommunications market. Failure to achieve or sustain commercial acceptance
of our currently available radio systems or to develop other commercially
acceptable radio systems would materially adversely affect us.  Also, industry
technical standards may change or, if emerging standards become established, we
may not be able to conform to these new standards in a timely and cost-effective
manner.

We operate in an intensely competitive industry

          The wireless communications market is intensely competitive.  Our
wireless-based radio systems compete with other wireless telecommunications
products and alternative telecommunications transmission media, including copper
and fiber optic cable.  We are experiencing intense competition worldwide from a
number of leading telecommunications companies.  Such companies offer a variety
of competitive products and services and broader telecommunications product
lines, and include Adtran, Inc., Alcatel Network Systems, California Microwave,
Inc., Digital Microwave Corporation (which has recently acquired other
competitors, including Innova International Corp. and MAS Technology, Ltd.),
Ericsson 

                                       14
<PAGE>
 
Limited, Harris Corporation-Farinon Division, Larus Corporation, Nokia
Telecommunications, Lucent T.R.T., Utilicom and Western Multiplex Corporation.

          Many of these companies have greater installed bases, financial
resources and production, marketing, manufacturing, engineering and other
capabilities than we do.  In early 1998, we acquired the Cylink Wireless Group
which competes with a large number of companies in the wireless communications
markets, including U.S. local exchange carriers and foreign telephone companies.
The most significant competition for Cylink Wireless Group's products in the
wireless market is from telephone companies that offer leased line data
services. We face actual and potential competition not only from these
established companies, but also from start-up companies that are developing and
marketing new commercial products and services.

          We may also compete in the future with other market entrants offering
competing technologies.  Some of our current and prospective customers and
partners have developed, are currently developing or could manufacture products
competitive with ours.  Nokia and Ericsson have recently developed new
competitive radio systems.

          The principal elements of competition in our market and the basis upon
which customers may select our systems include price, performance, software
functionality, ability to meet delivery requirements and customer service and
support.  Recently, certain competitors have announced the introduction of new
competitive products, including related software tools and services, and the
acquisition of other competitors and competitive technologies.  We expect
competitors to continue to improve the performance and lower the price of their
current products and services and to introduce new products and services or new
technologies that provide added functionality and other features.  New product
and service offerings and enhancements by our competitors could cause a decline
in sales or loss of market acceptance of our systems.  New offerings could also
make our systems, services or technologies obsolete or non-competitive.  In
addition, we are experiencing significant price competition and expect such
competition to intensify.

          We believe that to be competitive, we will need to expend significant
resources on, among other items, new product development and enhancements.  In
marketing our systems and services, we will compete with vendors employing other
technologies and services that may extend the capabilities of their competitive
products beyond their current limits, increase their productivity or add other
features.  We may not be able to compete successfully in the future.

We may be unable to respond to rapid technological change or introduce
new products in a timely manner

          Rapid technological change, frequent new product introductions and
enhancements, product obsolescence, changes in end-user requirements and
evolving industry standards characterize the communications market.  Our ability
to compete in this market will depend upon successful development, introduction
and sale of new systems and enhancements and related software tools, on a timely
and cost-effective basis, in response to changing customer requirements.
Recently, we have been developing point-to-multipoint radio systems.  Any
success in developing new and enhanced systems, including point-to-multipoint
systems, and related software tools will depend upon a variety of factors.  Such
factors include:

                                       15
<PAGE>
 
 .  new product selection;                   .  development and completion of
                                               related software tools, system
                                               performance, quality and 
                                               reliability of systems;

 .  integration of various elements of       .  development and introduction of
   complex technology;                         competitive systems; and
     
 .  timely and efficient implementation      .  timely and efficient completion 
   of manufacturing and assembly of            of system design.
   processes and cost reduction programs;
   

          We have experienced and continue to experience delays in customer
procurement and in completing development and introduction of new systems and
related software tools, including products acquired in acquisitions.  Moreover,
we may not be successful in selecting, developing, manufacturing and marketing
new systems or enhancements or related software tools.  Also, errors could be
found in our systems after commencement of commercial shipments.  Such errors
could result in the loss of or delay in market acceptance, as well as expenses
associated with re-work of previously delivered equipment.  Our inability to
introduce in a timely manner new systems or enhancements or related software
tools that contribute to sales could have a material adverse effect on our
business, condition and results of operations.

We face uncertainty because of our international operations

          In doing business in international markets, we face economic,
political and foreign currency fluctuations that are more volatile than those
commonly experienced in the United States and other areas.  Most of our sales to
date have been made to customers located outside of the United States.  We have
also acquired three Italy-based companies, two United Kingdom-based companies
and four U.S. companies with substantial international operations. These
companies sell their products and services primarily to customers in Europe, the
Middle East and Africa.  We anticipate that international sales will continue to
account for a majority of our sales for the foreseeable future.

          Historically, our international sales have been denominated in British
pounds sterling or United States dollars. With recent acquisitions of foreign
companies, certain of our international sales are denominated in other foreign
currencies, including Italian Lira.  A decrease in the value of foreign
currencies relative to the United States dollar could result in decreased
margins from those transactions.  For international sales that are United States
dollar-denominated, such a decrease could make our systems less price-
competitive and could have a material adverse effect upon our financial
condition.  We have in the past mitigated currency exposure to the British pound
sterling through hedging measures. However, any future hedging measures may be
limited in their effectiveness with respect to the British pound sterling and
other foreign currencies.  Additional risks are inherent in our international
business activities. Such risks include:

 .  changes in regulatory                .  delays in receiving components and
   requirements;                           materials; 
                                           
 .  costs and risks of localizing        .  availability of suitable export
   systems in foreign countries;           financing;

   

                                       16
<PAGE>
 
<TABLE> 
<CAPTION> 

<S>                                        <C> 
 .  timing and availability of export       .  foreign currency exchange
   licenses, tariffs and other trade          fluctuations;
   barriers;
   
 .  difficulties in staffing and            .  the burden of complying with a wide
   managing foreign operations,               variety of complex foreign laws and
   branches and subsidiaries;                 treaties;

 .  difficulties in managing                .  the difficulty in accounts
   distributors;                              receivable collections; and

 .  potentially adverse tax consequences;   .  political and economic instability.
</TABLE> 

          In addition, many of our customer purchase and other agreements are
governed by foreign laws, which may differ significantly from U.S. laws.
Therefore, we may be limited in our ability to enforce our rights under such
agreements and to collect damages, if awarded.

          In many cases, local regulatory authorities own or strictly regulate
international telephone companies.  Access to such markets is often difficult
because of established relationships between government owned or controlled
telephone companies and their traditional indigenous suppliers of
telecommunications equipment. The successful expansion of our international
operations in certain markets will depend on our ability to locate, form and
maintain strong relationships with established companies providing communication
services and equipment in targeted regions. The failure to establish regional or
local relationships or to successfully market or sell our products in
international markets could limit our ability to expand operations. Our
inability to identify suitable parties for such relationships, or even if
identified, to form and maintain strong relationships could prevent us from
generating sales of products and services in targeted markets or industries.
Moreover, even if such relationships are established, we may be unable to
increase sales of products and services through such relationships.

          Some of our potential markets include developing countries that may
deploy wireless communications networks as an alternative to the construction of
a limited wired infrastructure. These countries may decline to construct
wireless telecommunications systems or construction of such systems may be
delayed for a variety of reasons.  If such events occur, any demand for our
systems in these countries will be similarly limited or delayed.  Also, in
developing markets, economic, political and foreign currency fluctuations may be
much more volatile than conditions in the United States and other developed
areas.  Such volatility could have a material adverse effect on our ability to
develop or continue to do business in such countries.

     Recent global financial weakness

          Countries in the Asia/Pacific and Latin American regions have recently
experienced weaknesses in their currency, banking and equity markets.  These
weaknesses have adversely affected and could continue to adversely affect demand
for products, the availability and supply of product components to us and,
ultimately, our consolidated results of operations.

                                       17
<PAGE>
 
We are subject to extensive government regulation

          Radio communications are extensively regulated by the United States,
foreign laws and international treaties. Our systems must conform to a variety
of domestic and international requirements established to, among other things,
avoid interference among users of radio frequencies and to permit
interconnection of equipment.  Historically, in many developed countries, the
limited availability of radio frequency spectrum has inhibited the growth of
wireless telecommunications networks.

          Each country's regulatory process differs.  To operate in a
jurisdiction, we must obtain regulatory approval for our systems and comply with
differing regulations. Regulatory bodies worldwide continue to adopt new
standards for wireless communications products. The delays inherent in this
governmental approval process may cause the cancellation, postponement or
rescheduling of the installation of communications systems by us and our
customers. The failure to comply with current or future regulations or changes
in the interpretation of existing regulations could result in the suspension or
cessation of operations.  Such regulations or such changes in interpretation
could require us to modify products and services and incur substantial costs to
comply with such regulations and changes.

          In addition, we are also affected by domestic and international
authorities' regulation of the allocation and auction of the radio frequency
spectrum.  Equipment to support new systems and services can be marketed only if
permitted by governmental regulations and if suitable frequency allocations are
auctioned to service providers.  Establishing new regulations and obtaining
frequency allocation at auction is a complex and lengthy process.  If PCS
operators and others are delayed in deploying new systems and services, we could
experience delays in orders.  Similarly, failure by regulatory authorities to
allocate suitable frequency spectrum could have a material adverse effect on our
results.  In addition, delays in the radio frequency spectrum auction process in
the United States could delay our ability to develop and market equipment to
support new services.

          We operate in a regulatory environment subject to significant change.
Regulatory changes, which are affected by political, economic and technical
factors, could significantly impact our operations by restricting our
development efforts and those of our customers, making current systems obsolete
or increasing competition.  Any such regulatory changes, including changes in
the allocation of available spectrum, could have a material adverse effect on
our business, financial condition and results of operations.  We may also find
it necessary or advisable to modify our systems and services to operate in
compliance with such regulations.  Such modifications could be extremely
expensive and time-consuming.

We may require additional capital in the future

          Future capital requirements will depend upon many factors, including
the development of new products and related software tools, potential
acquisitions, requirements to maintain adequate manufacturing facilities and
contract manufacturing agreements, the progress of research and development
efforts, expansion of marketing and sales efforts, and the status of competitive
products.  Additional financing may not be available in the future on acceptable
terms, or at all.  In this regard, as a result of the continued existence of a
substantial amount of 

                                       18
<PAGE>
 
indebtedness incurred through the issuance of our 4 1/4% convertible promissory
notes due 2002 and the incurrence of debt under our bank line of credit, we
could be severely limited in our ability to raise additional financing. Given
the recent price for our common stock, if additional funds are raised by issuing
equity securities, significant dilution to our stockholders could result.

          In this regard, we have recently retired approximately $40 million of
our 4 1/4% convertible promissory notes in exchange for approximately 5.3
million shares of our common stock.  We may exchange additional 4 1/4%
convertible promissory notes for shares of common stock or, alternatively,
refinance or exchange the remainder of the 4 1/4% convertible promissory notes
and/or the bank debt.  We have also recently issued 15,000 shares of Series B
preferred stock and warrants to purchase up to 1,242,257 shares of our common
stock in exchange for a $15 million investment.  These transactions have had and
may continue to have a substantial dilutive effect on our stockholders and may
make it difficult for us to obtain additional future financing, if needed.  See
"-Risks associated with preferred stock financing."

          If adequate funds are not available, we may be required to restructure
or refinance our debt or delay, scale back or eliminate research and
development, acquisition or manufacturing programs.  We may also need to obtain
funds through arrangements with partners or others that may require us to
relinquish rights to certain of our technologies or potential products or other
assets.

We are subject to class action litigation

     State Actions

          On September 23, 1998, a putative class action complaint was filed in
the Superior Court of California, County of Santa Clara, by Leonard Vernon and
Gayle M. Wing on behalf of themselves and other P-Com stockholders who purchased
or otherwise acquired our common stock between April 15, 1997 and September 11,
1998.  The plaintiffs allege various state securities laws violations by P-Com
and certain of its officers and directors.  The complaint seeks unquantified
compensatory, punitive and other damages, attorneys' fees and injunctive and/or
equitable relief.

          On October 16, 1998, a putative class action complaint was filed in
the Superior Court of California, County of Santa Clara, by Terry Sommer on
behalf of herself and other P-Com stockholders who purchased or otherwise
acquired our common stock between April 1, 1998 and September 11, 1998.  The
plaintiff alleges various state securities laws violations P-Com and certain of
its officers.  The complaint seeks unquantified compensatory and other damages,
attorneys' fees and injunctive and/or equitable relief.

          On October 20, 1998, a putative class action complaint was filed in
the Superior Court of California, County of Santa Clara, by Leo Rubin on behalf
of himself and other stockholders who purchased or otherwise acquired our common
stock between April 15, 1997 and September 11, 1998.  This complaint is
identical in all relevant respects to that filed on September 23, 1998, which is
described above, other than the fact that the plaintiffs are different.

          On October 26, 1998, a putative class action complaint was filed in
the Superior Court of California, County of Santa Clara, by Betty B. Hoigaard
and Steve Pomex on behalf of 

                                       19
<PAGE>
 
themselves and other P-Com stockholders who purchased or otherwise acquired our
common stock between April 15, 1997 and September 11, 1998. This complaint is
identical in all relevant respects to that filed on September 23, 1998, which is
described above, other than the fact that the plaintiffs are different.

          On October 27, 1998, a putative class action complaint was filed in
the Superior Court of California, County of Santa Clara, by Judith Thurman on
behalf of herself and other P-Com stockholders who purchased or otherwise
acquired our common stock between April 15, 1997 and September 11, 1998.  This
complaint is identical in all relevant respects to that filed on September 23,
1998, which is described above, other than the fact that the plaintiffs are
different.

          On December 3, 1998, the Superior Court of California, County of Santa
Clara, entered an order consolidating all of the above complaints.  On January
15, 1999, the plaintiffs filed a consolidated amended class action complaint
superceding all of the foregoing complaints.  On March 1, 1999, defendants filed
a demurrer to the consolidated amended complaint and each cause of action stated
therein.  The demurrer is set for hearing by the court on May 13, 1999.

     Federal Actions

          On November 13, 1998, a putative class action complaint was filed in
the United States District Court, Northern District of California, by Robert
Schmidt on behalf of himself and other P-Com stockholders who purchased or
otherwise acquired our common stock between April 15, 1997 and September 11,
1998.  The plaintiff alleged violations of the Securities Exchange Act of 1934
by us and certain of our officers and directors.  The complaint sought
unquantified compensatory damages, attorneys' fees and injunctive and/or
equitable relief.  On January 26, 1999, the plaintiff voluntarily dismissed the
Schmidt action.  The court entered an order dismissing the action without
prejudice on January 29, 1999.

          On December 3, 1998, a putative class action complaint was filed in
the United States District Court, Northern District of California, by Robert
Dwyer on behalf of himself and other P-Com stockholders who purchased or
otherwise acquired our common stock between April 15, 1997 and September 11,
1998.  The plaintiff alleged violations of the Securities Exchange Act of 1934
by P-Com and certain of its officers and directors.  The complaint sought
unquantified compensatory damages, attorneys' fees and injunctive and/or
equitable relief.  On December 22, 1998 and February 2, 1999, the plaintiff
sought to voluntarily dismiss this action.  On February 11, 1999, the court
entered an order dismissing the action without prejudice.

          All of these proceedings are at a very early stage and we are unable
to speculate as to their ultimate outcomes.  However, we believe the claims in
the complaints are without merit and intend to defend against them vigorously.
An unfavorable outcome in any or all of them could have a material adverse
effect on our business, prospects, financial condition and results of
operations.  Even if all of the litigation is resolved in our favor, the defense
of such litigation will entail considerable cost and the significant diversion
of efforts of management, either of which are likely to have a material adverse
effect on our business, prospects, financial condition and results of
operations.

                                       20
<PAGE>
 
We face uncertainty regarding protection of proprietary rights

          We rely on a combination of patents, trademarks, trade secrets,
copyrights and other measures to protect our intellectual property rights.  We
generally enter into confidentiality and nondisclosure agreements with service
providers, customers and others, and attempt to limit access to and distribution
of proprietary rights.  We also enter into software license agreements with
customers and others.  However, such measures may not provide adequate
protection for our trade secrets or other proprietary information for a number
of reasons.  For example, our trade secrets or proprietary technology may
otherwise become known or be independently developed by competitors, and we may
not be able to otherwise meaningfully protect intellectual property rights.

          Any of our patents could be invalidated, circumvented or challenged,
or the rights granted thereunder may not provide competitive advantages to us.
Any of our pending or future patent applications might not be issued with the
scope of the claims sought, if at all.  Furthermore, others may develop similar
products or software or duplicate our products or software.  Similarly, others
might design around the patents owned by us, or third parties may assert
intellectual property infringement claims against us.  In addition, foreign
intellectual property laws may not adequately protect our intellectual property
rights abroad.  A failure or inability to protect proprietary rights could have
a material adverse effect on our business, financial condition and results of
operations.

          Even if our intellectual property rights are adequately protected,
litigation may also be necessary to enforce patents, copyrights and other
intellectual property rights, to protect our trade secrets, to determine the
validity of and scope of proprietary rights of others or to defend against
claims of infringement or invalidity.  We have, through our acquisition of the
Cylink Wireless Group, been put on notice from a variety of third parties that
the Group's products may be infringing the intellectual property rights of other
parties. Any such intellectual property litigation could result in substantial
costs and diversion of resources and could have a material adverse effect on our
business, financial condition and results of operations.  Litigation, even if
wholly without merit, could result in substantial costs and diversion of
resources, regardless of the outcome.  Infringement, invalidity, right to use or
ownership claims by third parties or claims for indemnification resulting from
infringement claims could be asserted in the future and such assertions may
materially adversely affect us.  If any claims or actions are asserted against
us, we may seek a license under a third party's intellectual property rights.
However, such a license may not be available under reasonable terms or at all.

We Depend on Key Personnel

          Our future operating results depend in significant part upon the
continued contributions of key technical and senior management personnel, many
of whom would be difficult to replace.  Future operating results also depend
upon ability to attract and retain qualified management, manufacturing, quality
assurance, engineering, marketing, sales and support personnel.  Competition for
such personnel is intense, and we may not be successful in attracting or
retaining such personnel. Only a limited number of persons with the requisite
skills 

                                       21
<PAGE>
 
to serve in these positions may exist and it may be increasingly difficult for
us to hire such personnel.

          We have experienced and may continue to experience employee turnover
due to several factors, including an expanding economy within the geographic
area in which we maintain our principal business offices.  Such turnover could
adversely impact our business.  We are presently addressing these issues and
intend to pursue solutions designed to provide performance incentives and
thereby retain employees.  The loss of any key employee, the failure of any key
employee to perform in his or her position, our inability to attract and retain
skilled employees as needed or the inability of our officers and key employees
to expand, train and manage our employee base could all materially adversely
affect our business.

The year 2000 issue could harm our operations

          Numerous currently installed computer systems and software products
are coded to accept only two digit entries in the date code field.  Beginning in
the year 2000, these date code fields will need to accept four digit entries to
distinguish 21st century dates from 20th century dates. As a result, in less
than one year, many companies' software and computer systems and/or software
used by many companies may need to be upgraded or replaced to comply with such
Year 2000 ("Y2K") requirements.  We have embarked on a global program to address
our readiness for the century change.  Our Y2K readiness program involves the
assessment of products, services, internal systems and critical suppliers and,
if required, development of plans for upgrades to or replacement of products,
business systems, suppliers and services that impact our Y2K readiness and/or
development of contingency plans.  We have not yet established a comprehensive
contingency plan with respect to the Y2K problem, but intend to establish such a
plan by the end of the second quarter of 1999 as part of our ongoing Y2K
compliance effort.

          In November of 1998, we initiated a new Y2K-ready internal business
system at our corporate headquarters.  The cost of the upgrade was approximately
$250,000.  Further business system upgrades will occur in our Control Resources
Corporation, Technosystem and Geritel subsidiaries by the end of the third
quarter of 1999.  Based on evaluation performed to date, we believe that all
"mission critical" internal systems are stable and current, in terms of Y2K
readiness.  However, the failure of any internal system to achieve Year 2000
readiness could result in material disruption to our operations.  Test and
assessment of all of our current radio products has been completed, with the
exception of Technosystem and Control Resources Corporation products, and Y2K
certification has been achieved.  However, the inability of any of our products
to properly manage and manipulate data in the year 2000 could result in
increased warranty costs, customer satisfaction issues, potential lawsuits and
other material costs and liabilities.  All Technosystem and Control Resources
Corporation products are expected to complete their Y2K assessment and testing
by the end of the first quarter of 1999.

          In November of 1998, we requested a Y2K readiness statement and
progress report from critical suppliers.  These suppliers will undergo Y2K site
evaluations between January 1 and the end of June 1999.  We expect to obtain all
Y2K readiness statements by the end of the third quarter 1999, and intend to
emphasize obtaining an early response from those suppliers which cannot be
easily replaced.  We are aware of the risk posed by single source or 

                                       22
<PAGE>
 
large volume suppliers that may not be addressing their Y2K readiness. Even
where assurances are received from third parties, a risk remains that failure of
systems and products of other companies on which we rely could have a material
adverse effect on our results.

          Our budget for the Y2K Program is expected to be an aggregate of
approximately $2 million.  Of this amount, we have incurred approximately
$400,000 to date, including the $250,000 disclosed above.  The foregoing
statements are based upon management's best estimates at the present time, which
were derived using numerous assumptions of future events, including the
continued availability of certain resources, third party modification plans and
other factors. These estimates may be incorrect and actual results could differ
materially from those anticipated. Specific factors that might cause such
material differences include, but are not limited to:

 .  the availability and cost of         .  success of external customers and
   personnel trained in this area;         suppliers in addressing the Year 2000
                                           issue; and
 .  the rate and magnitude of related
   labor and consulting costs;          .  the ability to locate and correct
                                           all relevant computer codes.
 .  the nature and amount of programming
   required to upgrade or replace each 
   of the affected programs;

          Our evaluation is on-going and we expect that new and different
information will become available to us as that evaluation continues.
Consequently, we cannot guarantee that all material elements will be Y2K ready
in time.

Our stock price is volatile

          In recent years, the stock market in general, and the market for
shares of small capitalization and technology stocks in particular, have
experienced extreme price fluctuations. Such fluctuations have often been
unrelated to the operating performance of affected companies. We believe that
factors such as announcements of developments related to our business,
announcements of technological innovations or new products or enhancements by us
or our competitors, developments in the Asia/Pacific region, sales by
competitors, including sales to our customers, sales of our common stock into
the public market, including by members of management, developments in our
relationships with customers, partners, lenders, distributors and suppliers,
shortfalls or changes in revenues, gross margins, earnings or losses or other
financial results that differ from analysts' expectations (as recently
experienced), regulatory developments, fluctuations in results of operations and
general conditions in our market or markets served by our customers or the
economy, could cause the price of our common stock to fluctuate, sometimes
reaching extreme and unexpected lows.  There can be no assurance that the market
price of our common stock will not continue to decline substantially, or
otherwise continue to experience significant fluctuations in the future,
including fluctuations that are unrelated to our performance.  Such fluctuations
could continue to materially adversely affect the market price of our common
stock.

                                       23
<PAGE>
 
We have a substantial amount of debt

          In November 1997, through a private placement of our 4 1/4%
convertible promissory notes, we incurred $100 million of indebtedness.  In
December 1998 and January 1999, we retired approximately $40 million of such
indebtedness in exchange for approximately 5.3 million shares of our common
stock.  As of September 30, 1998, our total indebtedness including current
liabilities was approximately $201.6 million and our stockholder's equity was
approximately $92.8 million.

          Our bank line of credit provides for borrowings of approximately $50
million, which as of December 31, 1998 had been almost fully utilized.  The line
of credit requires us to comply with several financial covenants, including the
maintenance of specific minimum ratios.  At periods in time since June 30, 1998,
we have amended our existing bank line of credit to prevent defaults with
respect to several financial covenants.  Had these amendments not been made, we
would have defaulted on those covenants in our bank line, which would have
triggered cross defaults in the Notes and other debt instruments.

          Our ability to make scheduled payments of the principal and interest
on indebtedness will depend on future performance, which is subject in part to
economic, financial, competitive and other factors beyond our control.  There
can be no assurance that we will be able to make payments on or restructure or
refinance our debt in the future, if necessary.  See "Risks associated with our
preferred stock financing" and "--We may be unable to collect our accounts
receivables in a timely manner."

We have not declared dividends

          Since our incorporation in 1991, we have not declared or paid cash
dividends on our common stock, and we anticipate that any future earnings will
be retained for investment in the business.  We are required to pay a 6% per
year premium on the Series B preferred stock, payable in cash or  common stock
at our option.  Any payment of cash dividends in the future will be at the
discretion of our board of directors and will depend upon, among other things,
our earnings, financial condition, capital requirements, extent of indebtedness
and contractual restrictions with respect to the payment of dividends.

It will be difficult for a third party to effect a change of control of P-Com

          Members of our board of directors and executive officers, together
with members of their families and entities that may be deemed affiliates of or
related to such persons or entities, beneficially own approximately 6% of the
outstanding shares of common stock.  Accordingly, these stockholders are able to
influence the election of the members of our board of directors and influence
the outcome of corporate actions requiring stockholder approval, such as mergers
and acquisitions.

          This level of ownership, together with the stockholder rights
agreement, certificate of incorporation, newly issued shares Series B preferred
stock, equity incentive plans, bylaws and Delaware law, may have a significant
effect in delaying, deferring or preventing a change in control of P-Com and may
adversely affect the voting and other rights of other holders of common stock.

                                       24
<PAGE>
 
          The rights of the holders of common stock will be subject to, and may
be adversely affected by, the rights of the holders of the Series B preferred
stock and any other preferred stock that may be issued in the future, including
the Series A Junior Participating preferred stock that may be issued pursuant to
the stockholder rights agreement upon the occurrence of certain triggering
events.  In general, the stockholder rights agreement provides a mechanism by
which our board of directors and stockholders may act to substantially dilute
the share position of any takeover bidder that acquires 15% or more of the
common stock.  The holders of the Series B preferred stock and warrants and
their transferees have been excluded from triggering the provisions of the
stockholder rights agreement.  The issuance of the Series B preferred stock or
the future issuance of the Series A preferred stock or any additional preferred
stock could have the effect of making it more difficult for a third party to
acquire a majority of our outstanding voting stock.  See "Risks Associated with
preferred stock Financing" and "Description of Our Capital Stock  Rights
agreement."

Possible adverse effect on market price for common stock of shares eligible for
future sale after the offering

          Sales of the common stock into the market could materially adversely
affect the market price of the common stock. Substantially all of the shares of
our common stock are eligible for immediate and unrestricted sale in the public
market at any time, including the approximately 5.3 million shares of common
stock issued in exchange for approximately $40 million of our 4 1/4% of
convertible promissory notes and, once the registration statement of which this
prospectus forms a part is declared effective, all shares of common stock
issuable conversion of the Series B preferred stock and exercise of the
warrants.

Risks associated with our preferred stock financing

          In December 1998, we raised gross proceeds of $15 million through the
issuance of 15,000 shares of a newly designated Series B convertible
participating preferred stock and warrants to purchase up to 1,242,257 shares of
common stock.  While the issuance of the Series B preferred stock and warrants
provided us with additional working capital required to fund continuing
operations, the agreements with the purchasers of the Series B preferred stock
and warrants contain terms and covenants that could result in substantial
dilution to our stockholders, could render future financings and loans and
merger and acquisition activities more difficult and could require us to expend
substantial amounts of cash, even if then unavailable at the time such
expenditure was required.  See "Description of Our Capital Stock."

          In particular, if we merge with a public company meeting certain
threshold criteria, the holders of the Series B preferred stock will be entitled
to receive in the merger the consideration they would have received had they
converted their stock the day before the public announcement of the merger.  If
we merge with a private company or a public company not meeting the defined
threshold criteria, the holders of the Series B preferred stock will be
entitled, at their option, (1) to retain their preferred stock, which will then
convert into common stock of the surviving company, or (2) receive either the
consideration they would have received had they converted their stock the day
before the public announcement of the merger or receive $1,250 per share of
Series B preferred stock then outstanding, up to an aggregate of $18,750,000, in
cash, plus any accrued and unpaid premium and a default interest rate, if
applicable.  

                                       25
<PAGE>
 
Notwithstanding the foregoing, we are permitted to acquire other companies
without having to provide special consideration to the holders of the Series B
preferred stock so long as we do not issue more than 20% of our common stock as
merger consideration. The holders of the warrants are entitled to similar
protections in the event of our merger or consolidation with another company. We
are also prohibited from selling or transferring all or substantially all of our
assets without prior approval by the purchasers of the Series B preferred stock.
These provisions may make our acquisition or asset sale more difficult and
expensive and could discourage some potential purchasers.

          Certain covenants that we made in connection with the issuance of the
Series B preferred stock may also have the effect of limiting our ability to
obtain additional financing and issue other securities.  We have agreed, until
December 22, 1999, not to issue or agree to issue any equity securities at a
price less than fair market value or any variably or re-setting priced
securities, subject to limited exceptions.  In addition, the terms of the Series
B preferred stock financing agreements prohibit us from, among other things,
altering, changing or otherwise adversely affecting the terms of the Series B
preferred stock; creating or issuing any senior or pari passu securities; or
redeeming or paying any dividend on any junior securities.

          The terms of the Series B preferred stock financing agreements also
include mandatory redemption features and payment provisions that are triggered
in the event we fail to satisfy certain obligations.  Holders of the Series B
preferred stock may require redemption of their shares at a substantial premium,
plus a default interest rate, if applicable, upon the occurrence of certain
events deemed within our control.  Upon the occurrence of certain other events
deemed outside of our control, including among others, our failure to obtain
stockholder approval (which we must solicit at our expense) of the potential
issuance of more than 20% of the common stock outstanding on December 22, 1998,
or 8,707,488 shares, at a price less than the greater of book value or fair
market value may be required to make significant payments to the holders of
Series B preferred stock and warrants.  All such payments are capped at
$4,950,000 plus a default interest rate, if applicable, and are in lieu of
redemption for these provisions.  If the holders of Series B preferred stock
demand redemption or if we are required to make significant payments to such
stockholders, we may not be able to fund such redemption or payments, and even
if funding is available, the expenditures required to fund such redemption or
payments could have a material adverse effect on our financial condition.

          The Series B preferred stock is convertible into shares of our common
stock at variable rates based on future trading prices of our common stock and
events that may occur in the future.  The number of shares of common stock that
may ultimately be issued upon conversion is therefore presently indeterminable
and could fluctuate significantly based on the issuance by us of other
securities.  Also, the warrants are subject to anti-dilution protection and thus
may require the issuance of more shares than originally anticipated.  These
factors may result in substantial future dilution to the holders of our common
stock.

          In addition to the foregoing, the redemption rights, liquidated
damages provisions, cross default provisions to our debt instruments and other
terms of the Series B preferred stock, under certain circumstances, could lead
to a significant accounting charge to earnings and could materially adversely
affect our business, results of operations and condition.  The Series B
preferred stock will be classified as mandatorily redeemable preferred stock.
As a result, on 

                                       26
<PAGE>
 
December 22, 1998, we recognized in our earnings (loss) per share calculation
the fair value of warrants issued and the accretion of the Series B preferred
stock to its fair value. During the period of conversion of the Series B
preferred stock, we will be required to recognize in our earnings (loss) per
share calculation any accretion of the Series B preferred stock to its
redemption value as a dividend to the holders of the Series B preferred stock.
Consequently, we will be required to take a charge of approximately $1.5 million
to our accumulated deficit for the fourth quarter of fiscal 1998 as a result of
the accounting treatment for issuance of the Warrants. Such charge and potential
other future charges relating to the provisions of the Series B preferred stock
financing agreements may materially adversely affect our earnings (loss) per
share and the market price of our common stock both currently and in future
periods. The convertibility features of such Series B preferred stock and
subsequent sales of the common stock underlying both it and the warrants could
materially adversely affect our valuation and the market trading price of our
shares of common stock.

                                       27
<PAGE>
 
                       WHERE YOU CAN FIND MORE INFORMATION

          We file annual, quarterly and special reports, proxy statements and
other information with the SEC.  You may read and copy any document we file at
the SEC's public reference rooms in Washington, D.C., New York, New York and
Chicago, Illinois.  Please call the SEC at 1-800-SEC-0330 for further
information on the public reference rooms.  Our SEC filings are also available
to the public from our web site at http://ittinfo.com or at the SEC's web site
at http://www.sec.gov.

          This prospectus is part of a registration statement (Registration No.
333-70937) we filed with the SEC.  The SEC allows us to "incorporate by
reference" the information we file with them, which means that we can disclose
important information to you by referring you to those documents.  The
information incorporated by reference is considered to be part of this
prospectus, and later information filed with the SEC will update and supersede
this information.  We incorporate by reference the documents listed below and
any future filings made with the SEC under Section 13a, 13(c), 14 or 15(d) of
the Securities Exchange Act of 1934, as amended, until our offering is complete.

     (1) our Annual Report on Form 10-K for the year ended December 31, 1997,
filed as of March 31, 1998;

     (2) our amended Annual Report on Form 10-K/A for the year ended December
31, 1997, filed as of May 6, 1998;

     (3) our quarterly reports on Form 10-Q for the quarters ended March 31,
1998, June 30, 1998 and September 30, 1998, filed as of May 15, 1998, August 14,
1998 and November 13, 1998, respectively;

     (4) our current reports on Form 8-K filed as of January 23, 1998, March 16,
1998, April 9, 1998, April 17, 1998, July 17, 1998, September 11, 1998,
September 25, 1998, October 15, 1998, October 23, 1998, December 23, 1998,
December 24, 1998, December 31, 1998, January 4, 1999 (two separate filings),
January 29, 1999 and February 3, 1999, and Form 8-K/A dated as of April 17,
1998, June 12, 1998, September 11, 1998 and January 6, 1999;

     (5) the description of our common stock and Series A preferred stock
contained in our registration statements on Form 8-A filed as of January 12,
1995 and Form 8-A/A filed as of February 16, 1995, October 9, 1997, December 22,
1998 and December 24, 1998; and

     (6) all future reports and other documents filed by us pursuant to Section
13(a), 13(c), 14 or 15(d) of the Exchange Act shall be deemed to be incorporated
by reference herein and to be a part of this prospectus from the date of filing
of such reports and documents. Any statement incorporated herein may modify or
supersede information or statements in this prospectus.

          Upon request, we will provide without charge a copy of this
prospectus, and a copy of any and all of the information that has been or may be
incorporated by reference in this prospectus. Requests for such copies should be
directed to P-Com, Inc., 3175 S. Winchester Boulevard, Campbell, California
95008 (telephone (408) 866-3666).

          You should rely only on the information incorporated by reference or
provided in this prospectus or any prospectus supplement.  We have authorized no
one to provide you with different information.  We are not making an offer of
these securities in any state where the offer is not permitted.  You should not
assume that the information in this prospectus or any

                                       28
<PAGE>
 
prospectus supplement is accurate as of any date other than the date on the
front of this document.

                                       29
<PAGE>
 
                                 USE OF PROCEEDS

          We will not receive any of the proceeds from the sale of the common
stock by the selling stockholders.

                                 DIVIDEND POLICY

          To date, we have not paid any cash dividends on shares of our common
stock.  We currently anticipate that we will retain any available funds for use
in the operation of its business, and we do not anticipate paying any cash
dividends in the foreseeable future.

                                     PREMIUM

          We are required to pay, upon conversion, a 6% per year premium on the
Series B preferred stock, payable in cash or  common stock at our option.

              RATIO (DEFICIENCY) OF EARNINGS (LOSS) TO FIXED CHARGES

          The following table shows our ratio (deficiency) of earnings (loss) to
fixed charges for each of the periods indicated.  For purposes of calculating
the ratio (deficiency) of earnings to fixed charges, "earnings" consist of
income (loss) before income taxes plus fixed charges, and "fixed charges"
consist of interest expense incurred including with respect to capital leases,
amortization of interest costs and the portion of rental expense under operating
leases deemed by us to be representative of the interest factor.  Earnings did
not cover fixed charges by $4.8 million, $5.4 million and $74.2 million in 1993,
1994 and for the three quarters ended September 30, 1998, respectively.

<TABLE>
<CAPTION>
                                             Year Ended December 31,              September 30,
                                       1993      1994    1995   1996   1997           1998
                                      -------   ------   ----   ----   -----      -------------
<S>                                   <C>       <C>      <C>    <C>    <C>           <C> 
Ratio (deficiency) of earnings        
 (loss) to fixed charges              <14.3x>   <7.9x>   5.9x   9.6x   13.4x         <12.0x>          
</TABLE>

                                       30
<PAGE>
 
                         DESCRIPTION OF OUR CAPITAL STOCK

          Our authorized capital stock consists of 95 million shares of common
stock and two million shares of preferred stock.  We have designated 500,000
shares of our preferred stock as Series A Junior Participating preferred stock
and 20,000 shares of our preferred stock as Series B Convertible Participating
preferred stock.  There are no shares of our Series A preferred stock issued and
outstanding and 15,000 shares of our Series B preferred stock issued and
outstanding.

Common stock

          As of January 8, 1999, there were 47,258,691 shares of common stock
outstanding which were held of record by approximately 479 stockholders.  The
holders of common stock are entitled to one vote per share on all matters to be
voted upon by the stockholders.  Subject to preferences that may be applicable
to any outstanding preferred stock, the holders of common stock are entitled to
receive ratably such dividends, if any, as may be declared from time to time by
our board of directors out of funds legally available therefor.  See "Dividend
Policy."

          In the event of our liquidation, dissolution or winding up, the
holders of common stock are entitled to share ratably in all assets remaining
after payment of liabilities, subject to prior distribution rights of preferred
stock then outstanding.  The common stock has no preemptive or conversion rights
or other subscription rights.  There are no redemption or sinking fund
provisions applicable to the common stock.  All outstanding shares of common
stock are fully paid and nonassessable.

Preferred stock

          Our board of directors has the authority to issue the preferred stock
in one or more series and to fix the rights, preferences, privileges and
restrictions thereof, including dividend rights, dividend rates, conversion
rights, voting rights, terms of redemption, redemption prices, liquidation
preferences and the number of shares constituting any series or the designation
of such series, without further vote or action by the holders of common stock.

                                       31
<PAGE>
 
          Our board may not create or issue any additional shares of Series B
preferred stock or of the remaining authorized but unissued shares of preferred
stock without the consent of the initial purchasers of the Series B preferred
stock. The issuance of the Series A preferred stock or any newly created
preferred stock may delay, defer or prevent a change in control of P -Com
without further action by the stockholders and may adversely affect the voting
and other rights of the holders of common stock. The issuance of Series A
preferred stock or any newly created preferred stock with voting and conversion
rights may adversely affect the voting power of the holders of common stock,
including the loss of voting control to others. At present we have no plans to
issue any additional preferred stock, other than Series A Preferred and the
Series B preferred stock.

     Series A preferred stock

          The Series A preferred stock is not redeemable.  Each share of Series
A preferred stock will be entitled to an aggregate dividend of 10,000 times any
dividend declared per share of common stock.  In the event of liquidation, the
holders of the Series A Preferred will be entitled to the greater of a $10,000
per share payment, plus any accrued and unpaid dividends, or an aggregate
payment of 10,000 times any payment to be made per share of common stock, prior
to any payment to any holder of common stock.  Each share of Series A Preferred
will have 10,000 votes, voting together with the common stock.  In the event of
any merger, consolidation or other transaction in which our common stock is
exchanged, each share of Series A Preferred will be entitled to receive 10,000
times the amount received per share of common stock.  Each of these rights are
protected by customary antidilution provisions.  Because of the nature of the
dividend, liquidation and voting rights of the shares of Series A Preferred, the
value of the one-ten-thousandth interest in a share of Series A Preferred
purchasable upon exercise of each right to purchase Series A preferred stock
should approximate the value of one share of common stock.  See "-Rights
agreement."

     Series B preferred stock

          Premium.  The Series B preferred stock accrues a 6% per year premium,
          -------                                                              
payable in cash or common stock at our option.

          Conversion Price.  Each share of Series B preferred stock has a face
          ----------------                                                    
value of $1,000 and is convertible at the election of the holder into shares of
common stock.  From and after June 21, 1999, upon sufficient notice, if the
then-effective conversion price for the Series B preferred stock is less than
$2.264025, instead of converting the Series B preferred stock into common stock
upon a holder's request, we may elect to pay such holder the equivalent value of
the common stock in cash.  The conversion price of the Series B preferred stock
is $6.0374 per share until May 14, 1999.  Thereafter, the Series B preferred
stock is convertible at the lower of

     .  $6.0374 per share;

     .  105% of the average closing bid prices of our common stock for the 15
        consecutive trading days ending on May 14, 1999; and

                                       32
<PAGE>
 
     .  101% of the lowest average closing bid prices our common stock over any
        3 consecutive days during the 15 consecutive day period ending on the
        day prior to the applicable conversion date.

          The conversion price is subject to adjustment if we have not achieved
$10 million of written contractual commitments for sales of our point to
multipoint products and services prior to March 24, 1999.  In the event we do
not obtain such commitments, the conversion price of 7,500 shares of the Series
B preferred stock shall adjust to the lower of $6.0374 and 101% of the lowest
average closing bid prices our common stock over any 3 consecutive days during
the 15 consecutive day period ending prior to the applicable conversion date
during the period from March 24, 1999 through May 14, 1999.  In addition, the
foregoing conversion price of the Series B preferred stock is subject to
adjustment upon the occurrence of certain other events, including:

     .  our failure to obtain in a timely manner stockholder approval to issue
        more than 20% of our common stock on conversion of the Series B
        preferred stock and exercise of the warrants issued in connection with
        the Series B preferred stock;

     .  our failure to timely deliver common stock upon submission of a notice
        of conversion for the Series B preferred stock;

     .  our failure to redeem the Series B preferred stock after providing to
        the holders of the Series B preferred stock a notice of redemption at
        our option;

     .  our or any of our subsidiaries' public announcement of a merger or
        consolidation;

     .  our issuance of common stock or securities convertible or exchangeable
        into common stock at a variable price per share or at a price per share
        less than a predetermined amount; and

     .  the sale by George Roberts, Chief Executive Officer of the Company, or
        Michael Sophie, Chief Financial Officer of the Company, of securities at
        less than a predetermined per share price.

          Registration.  We are required by the Series B preferred stock
          ------------                                                  
financing agreements to register and keep registered at least 150%, and in some
instances 200%, of the aggregate number of shares of common stock into which the
Series B preferred stock is convertible and for which the warrants are
exercisable.  To help ensure our compliance at all times, we have chosen to
register initially 13 million shares of our common stock.  Notwithstanding the
registration of such number of shares, the terms of the Series B preferred stock
financing agreements prohibit us from issuing shares of common stock upon
conversion of the shares of Series B preferred stock or exercise of the warrants
if such issuance would result in any holder's beneficially owning in excess of
4.9% of our then outstanding common stock.  In addition, until stockholder
approval is obtained, we are subject to the 20% limit imposed by Nasdaq.  See
"Risks associated with our preferred stock financing."

          Automatic Conversion.  Assuming certain conditions are met, the Series
          --------------------                                                  
B preferred stock will automatically convert into common stock on December 22,
2001.

          Redemption at Holder's Option.  Upon the occurrence of certain events
          -----------------------------                                        
deemed within the Company's control, each then outstanding share of the Series B
preferred stock is 

                                       33
<PAGE>
 
redeemable at a holder's option at the greater of $1,330 per share, plus a 6%
per year premium and any default amounts, or a predetermined redemption formula
based on the average of the closing bid prices for our common stock during the
period beginning on the date of the holder's redemption notice and ending on the
date of redemption. Such events include:

     .  our failure to obtain in a timely manner stockholder approval to issue
        more than 20% of our common stock on conversion of the Series B
        preferred stock and exercise of the warrants issued in connection with
        the Series B preferred stock;

     .  our failure to deliver in a timely manner common stock upon submission
        of a notice of conversion;

     .  our failure to remove restrictive legends on our common stock when
        required under the Series B preferred stock financing agreements;

     .  our announcement of our intention not to issue common stock upon
        conversion of the Series B preferred stock or exercise of the warrants;

     .  our knowing breach of any material covenant or term in the Series B
        preferred stock financing agreements;

     .  our material breach, as a result of performance under the Series B
        preferred stock financing agreements, of any agreement to which we are
        or become a party;

     .  our knowing commission of any act or omission that constitutes a breach
        of any representation or warranty in any of the Series B preferred stock
        financing agreements;

     .  our failure to maintain sufficient common stock reserved for conversion
        of the Series B preferred stock or exercise of the warrants (to the
        extent no additional stockholder approval is required to obtain an
        increase in authorized shares, if required);

     .  our knowing and material breach of any agreement involving indebtedness
        for borrowed money or purchase price which results in or which would
        result in acceleration of the maturity of such debt; and

     .  our failure to use best efforts to avoid the occurrence of certain
        events that could result in cash payments to holders of the Series B
        preferred stock as described below.

          In certain circumstances, we may be able to avoid redemption if we
cure such events prior to the redemption election by a holder.  If we are unable
to avoid redemption and are unable to redeem the Series B preferred stock upon
request, we must redeem that portion that is permitted and, thereafter, use our
best efforts to remedy the impairment preventing redemption.  In addition,
certain of the foregoing events may also require us make additional payments,
either in cash or additional shares of common stock or Series B preferred stock.

          Cash Payments.  Upon the occurrence of certain other events deemed
          -------------                                                     
outside of the Company's control, we are required to make significant cash
payments to the holders of the Series B preferred stock.  Such events include:

                                       34
<PAGE>
 
     .  the suspension or de-listing of our common stock from trading on the
        Nasdaq National Market System or certain other markets acceptable to the
        initial purchasers of the Series B preferred stock;

     .  the suspension of the registration statement of which this prospectus is
        a part after its effective date for more than a predetermined period of
        time;

     .  failure to maintain sufficient common stock reserved for conversion of
        the Series B preferred stock or exercise of the warrants (to the extent
        additional stockholder approval is required to obtain an increase in
        authorized shares, if required);

     .  failure to have declared effective additional registration statements
        that may be required under the Series B preferred stock financing
        agreements for shares of common stock issuable as a result of premiums,
        failures to satisfy certain obligations, anti-dilution protections or
        adjustments in the conversion rate of the Series B preferred stock;

     .  failure to obtain in a timely manner stockholder approval to issue more
        than 20% of our common stock on conversion of the Series B preferred
        stock and exercise of the warrants issued in connection with the Series
        B preferred stock; and

     .  declaration of or being put into bankruptcy or receivership or failure
        to pay our debts generally as and when due.

          All cash payments required to be made as a result of such an event,
together with all cash payments required to be made under the other Series B
preferred stock financing agreements, are capped at an aggregate of $1,333 per
share plus a default interest rate, if applicable.  In addition to the foregoing
cash payments, upon the occurrence of such an event, the holders can require us
to list our common stock on the over-the-counter electronic bulletin board
which, as of the date hereof, has no limitation relating to issuance of more
than 20% of our common stock or similar restriction and, thereafter, require us
to honor all requested conversions.

          Redemption at Our Option.  So long as an event pursuant to which the
          ------------------------                                            
holders of Series B preferred stock are entitled to redemption or an event
requiring us to make a cash payment as described above has not occurred (or if
such event has occurred in the past, it has been cured for at least the six
immediately preceding consecutive months without the occurrence of any other
such event), the Series B preferred stock is redeemable at our option in certain
limited circumstances at premiums varying from 115% to 160% of the original
issue price of the Series B preferred stock, plus a 6% premium per year and a
default interest rate, if applicable.  More particularly, the Series B preferred
stock is redeemable:

 .  on three dates between December 22, 1998 and December 22, 1999 at premiums
   varying between 130% and 120% of the original issue price of the Series B
   preferred stock, plus a 6% premium per year and any default amounts, provided
   our common stock is then trading at less than $2.264025;

 .  after December 22, 1999 and prior to December 22, 2000, the Company may
   redeem the Series B preferred stock at the greater of 160% of the original
   issue price of the 

                                       35
<PAGE>
 
          Series B preferred stock, plus a 6% premium per year and any default
          amounts, or the Redemption Formula Amount; and

     .  after December 22, 2000, if (1) the closing bid price for our common
        stock exceeds a predetermined substantial threshold, we may redeem the
        Series B preferred stock at 115% of the original issue price of the
        Series B preferred stock, plus a 6% premium per year and any default
        amounts, or (2) we simultaneously close a firm commitment underwriting
        with a minimum $8.00 per share price and a minimum aggregate amount of
        $30 million, we may redeem the Series B preferred stock at the greater
        of 120% of the original issue price of the Series B preferred stock plus
        a 6% premium per year and any default amounts, or predetermined
        redemption formula based on the average of the closing bid prices for
        our common stock during the period beginning on the date of the holder's
        redemption notice and ending on the date of redemption.

          We must redeem all of the Series B preferred stock unless in excess of
$5 million of Series B preferred stock (in $1 million increments) will be
redeemed.  If we fail to redeem the Series B preferred stock after providing a
notice of redemption, we forfeit all future redemptions at our option and the
conversion rate of the Series B preferred stock will be adjusted.

          Protective Provisions.  The Series B preferred stock is senior to the
          ---------------------                                                
Series A preferred stock and common stock in respect of the right to receive
dividend payments and liquidation preferences.  The Series B preferred stock has
no voting power, except as otherwise provided by applicable law or pursuant to
certain contractual protections described herein.  In connection with the
issuance of the Series B preferred stock, we have agreed, until December 22,
1999, not to issue or agree to issue any equity securities at a price less than
fair market value or at a variable or re-settable price, subject to limited
exceptions.  In addition, we are prohibited from, among other things, altering,
changing or otherwise adversely affecting the terms of the Series B preferred
stock; creating or issuing any senior or pari passu securities; redeeming or
paying any dividend on any junior securities; acting so as to generate taxation
under Section 305 of the Internal Revenue Code of 1986, as amended; and selling
or transferring all or substantially all of our assets without prior approval by
the purchasers of the Series B preferred stock.

          Change of Control.  If we merge with a public company meeting certain
          -----------------                                                    
threshold criteria, the holders of the Series B preferred stock will be entitled
to receive in the merger the consideration they would have received had they
converted their stock the day before the public announcement of the merger.  If
we merge with a private company or a public company not meeting the threshold
criteria, the holders of the Series B preferred stock will be entitled, at their
option, (1) to retain their preferred stock, which will thereafter convert into
common stock of the surviving company, or (2) receive either the consideration
they would have received had they converted their stock the day before the
public announcement of the merger or receive $1,250 per share of Series B
preferred stock then outstanding, up to an aggregate of $18,750,000, in cash,
plus any accrued and unpaid premium and a default interest rate, if applicable.
Notwithstanding the foregoing, we are permitted to acquire other companies
without having to provide special consideration to the holders of the Series B
preferred stock so long as we do not issue more than 20% of our common stock as
merger consideration.  The holders of the Warrants are entitled to similar
protections in the event of our merger or consolidation with another 

                                       36
<PAGE>
 
company. We are also prohibited from selling or transferring all or
substantially all of our assets without prior approval by the purchasers of the
Series B preferred stock.

          Warrants.  The Warrants are immediately exercisable until the earlier
          --------                                                             
of: (1) December 22, 2003 and (2) the date on which the closing of a
consolidation, merger or other business combination with or into another entity
pursuant to which we do not survive.  The exercise price for the common stock
underlying the Warrant is $3.47 (subject to adjustment).  In the event we merge
or consolidate with any other company, the warrantholders are entitled to
similar choices as to the consideration they will receive in such merger or
consolidation as are provided to the holders of the Series B preferred stock.
In addition, the number of shares issuable upon exercise of the Warrants is
subject to anti-dilution adjustment if we sell common stock or securities
convertible into or exercisable for common stock (excluding certain issuances
such as common stock issued under employee, director or consultant benefit
plans) at a price per share less than $3.47 (subject to adjustment).

          The foregoing description is only a summary and is qualified in its
entirety by reference to the Securities Purchase Agreement dated as of December
21, 1998 by and among the Company and the purchasers listed therein, the
Registration Rights Agreement dated as of December 21, 1998 by and among the
Company and the purchasers listed therein, the warrants issued by us to the
purchasers and the Series B Certificate of Designation attached hereto or to the
Current Report on Form 8-K dated as of December 24, 1998 as Exhibits 10.38,
10.39, 10.40A, 10.40B, and 10.40C, and 3.2D and 3.2E, respectively, and
incorporated herein by reference.

Delaware anti-takeover law and certain charter provisions

          We are subject to Section 203 of the Delaware General Corporation Law.
Section 203, subject to certain exceptions, prohibits a Delaware corporation
from engaging in any business combination with any interested stockholder for a
period of three years following the date that such stockholder became an
interested stockholder, unless:

   .  prior to such date, the board of directors of the corporation approved
      either the business combination or the transaction which resulted in the
      stockholder becoming an interested stockholder;

   .  upon consummation of the transaction which resulted in the stockholder
      becoming an interested stockholder, the interested stockholder owned at
      least 85% of the voting stock of the corporation outstanding at the time
      the transaction commenced (for the purposes of determining the number of
      shares outstanding, under Delaware law, those shares owned (1) by persons
      who are directors and also officers and (2) by employee stock plans in
      which employee participants do not have the right to determine
      confidentially whether shares held subject to the plan will be tendered in
      a tender or exchange offer are excluded from the calculation); or

   .  on or subsequent to such date, the business combination is approved by the
      board of directors and authorized at an annual or special meeting of
      stockholders, and not by written consent, by the affirmative vote of at
      least 66 2/3% of the outstanding voting stock which is not owned by the
      interested stockholder.

                                       37
<PAGE>
 
          Section 203 defines a business combination to include:

     .  any merger or consolidation involving the corporation and the interested
        stockholder;

     .  any sale, transfer, pledge or other disposition of 10% or more of the
        assets of the corporation involving the interested stockholder;

     .  subject to certain exceptions, any transaction which results in the
        issuance or transfer by the corporation of any stock of the corporation
        to the interested stockholder;

    .  any transaction involving the corporation which has the effect of
       increasing the proportionate share of the stock of any class or series of
       the corporation beneficially owned by the interested stockholder; or

    .  the receipt by the interested stockholder of the benefit of any loans,
       advances, guarantees, pledges or other financial benefits provided by or
       through the corporation.

          In general, Section 203 defines an interest stockholder as any entity
or person beneficially owning 15% or more of the outstanding voting stock of the
corporation and any entity or person affiliated with or controlling or
controlled by such entity or person.

          Certain provisions of our Stockholders' Rights Plan, Certificate of
Incorporation, equity incentive plans, Bylaws and Delaware law may have a
significant effect in delaying, deferring or preventing a change in control of
the Company and may adversely affect the voting and other rights of other
holders of common stock.  In particular, we have a classified Board of Directors
and the Board of Directors has the ability (subject to approval by the initial
holders of the Series B preferred stock) to issue blank check preferred stock
without further stockholder approval, as was the case with the Series B
preferred stock, may have the effect of delaying, deferring or preventing a
change in control of the Company and may adversely affect the voting and other
rights of other holders of common stock.

Rights agreement

          On September 26, 1997, the board of directors approved a Stockholder
Rights Agreement that was executed by P-Com and BankBoston, N.A., the Rights
Agent, on October 1, 1997 and restated on December 21, 1998.  Pursuant to the
stockholder rights agreement, rights to purchase Series A preferred stock were
distributed as a dividend at the rate of one preferred share purchase right on
each outstanding share of its common stock held by stockholders of record as of
the close of business on November 3, 1997, and will be distributed at the same
rate for each share of common stock issued thereafter.  Each right to purchase
Series A preferred stock entitles its holder to buy one ten-thousandth of one
share of Series A preferred stock at an exercise price of $125.00, but only once
the rights to purchase Series A preferred stock become exercisable upon the
occurrence of certain triggering events.  The rights to purchase Series A
Preferred Stock will expire on November 1, 2007.

          The rights to purchase Series A preferred stock become exercisable
only if a person or group acquires 15% or more of our  common stock or announces
a tender offer, the 

                                       38
<PAGE>
 
consummation of which would result in ownership by a person or group of 15% or
more of our common stock, such person or group to be known as an acquiring
person. If,

     (1) subject to limited exceptions, any acquiring person:

         . merges into P-Com and P-Com survives; 

         . transfers assets to P-Com or its subsidiaries in exchange for our
           common stock or otherwise acquires additional shares of our common
           stock;

         . sells or purchases or otherwise acquires or disposes of assets to,
           from or with P-Com or any subsidiary on terms less favorable than in
           an arm's length negotiated transaction;

         . sells or purchases or otherwise acquires or disposes of assets to,
           from or with P-Com or any subsidiary having a fair market value of
           more than $5 million;

         . receives compensation from P-Com or any subsidiary, except for
           standard compensation for full time employment; or

         . receives the benefit of any financial assistance or tax advantages
           from P-Com or any subsidiary;

     (2) subject to limited exceptions, any person becomes an acquiring person;
         or

     (3) subject to limited exceptions, while there is an acquiring person, we
         reclassify or recapitalize our capital stock (including a reverse
         stock split) or we merge or consolidate with any subsidiary causing
         more than a 1% increase in any class of our then outstanding equity
         securities which is owned by an acquiring person,

then each unexercised right to purchase Series A preferred stock will entitle
its holder to purchase, at the rights to purchase Series A preferred stock's
then-current exercise price, a number of one ten-thousandths of a share of our
Series A preferred stock having a market value of twice the then-current
exercise price of a right to purchase Series A preferred stock on the date any
of the foregoing events occurred.  The holders of the Series B preferred stock
and warrants and their transferees have been excluded from the definition of
acquiring person and therefore also from triggering the provisions of the
stockholder rights agreement.  Consequently, even if such a holder acquires 15%
or more of our common stock, the rights to purchase Series A preferred stock
will not become exercisable.

          In addition, if after a person or group becomes an acquiring person,

   .  we consolidate with or merge with and into any other person (other than a
      subsidiary) and we do not survive;

   .  any person (other than a subsidiary) consolidates or merges with us in a
      transaction in which we survive and any of our common stock is exchanged
      for cash, property or stock of any other person; or

   .  we or any subsidiary sells or otherwise transfers to any person (other
      than a subsidiary) assets or earning power in excess of 50% of our assets
      or earning power and our subsidiaries;

                                       39
<PAGE>
 
then each unexercised right to purchase Series A preferred stock will entitle
its holder to receive, at the right to purchase Series A preferred stock's then-
current exercise price, shares of common stock of the principal party involved
in such transaction with us equal in value to twice the then-current exercise
price of a right on the date of any of the foregoing events.

          At any time after any person or group becomes an acquiring person, but
before such acquiring person becomes the beneficial owner of more than 50% of
our common stock, our board of directors, in its sole discretion, may exchange
all or part of the unexercised rights to purchase Series A preferred stock for a
number of one ten-thousandths of a share of our Series A preferred stock equal
to the then current exercise price of a right to purchase Series A preferred
stock divided by the fair market value of one ten-thousandth of a share of our
Series A preferred stock on the earlier of  the date the acquiring person became
an acquiring person or, if applicable, the date on which a tender or exchange
offer was first made pursuant to which the offeror became an acquiring person.
At any time prior to the date an acquiring person becomes an acquiring person,
the board of directors, in its sole discretion, may redeem all of the rights to
purchase Series A preferred stock for $0.001 per such right, payable at our
board of director's option in cash or property, including our common stock.

Transfer agent and registrar

          The transfer agent and registrar for the common stock is Boston
EquiServe LLP, 289 San Antonio Road, Suite 100, Los Altos, California 94022.
Its telephone number is (650) 947-3226.

                                       40
<PAGE>
 
                               SELLING STOCKHOLDERS

          To help ensure our compliance with the Series B preferred stock
financing agreements, we have chosen to register 13 million shares of common
stock on behalf of the selling stockholders.  We cannot determine the number of
shares of common stock that we will ultimately issue in connection with the
Series B preferred stock financing because:

     .  the conversion price of the Series B preferred stock may vary with the
        market price of our common stock;

     .  we may choose to pay dividends on the Series B preferred stock in shares
        of common stock;

     .  we may be required to issue common stock upon our failure to satisfy
        certain obligations; and

     .  the number of shares that we may issue upon conversion of the Series B
        preferred stock and exercise of the warrants is subject to certain anti-
        dilution protections. "See "Description of Our Capital- Stock -Preferred
        stock Series B preferred stock."

          Because of these factors, we may not issue the entire 13 million
shares of common stock covered by this prospectus.  In fact, we may issue
materially more or materially less than 13 million shares of common stock.

          The 13 million shares covered by this prospectus represent
approximately 27.5% of our outstanding shares of common stock as of January 8,
1999.  Notwithstanding the registration of the 13 million shares of common stock
covered by this prospectus, the terms of the Series B preferred stock financing
agreements prohibit us from issuing to any selling shareholder shares of common
stock upon conversion of the Series B preferred stock or exercise of the
warrants if such issuance would result in us issuing more than 20% of our
outstanding common stock without shareholder approval or such selling
shareholder beneficially owning in excess of 4.9% of our outstanding common
stock.

          The following table sets forth the aggregate number of shares of
common stock beneficially owned by each selling shareholder as of January 8,
1999 and the percentage of all shares of common stock held by such selling
shareholder before and after giving effect to the offering based on 47,258,691
shares of common stock outstanding as of January 8, 1999.  We considered the
following factors and made the following assumptions regarding the table:

     .  beneficial ownership is determined in accordance with the rules of the
        SEC and generally includes voting or investment power with respect to
        securities and including any securities that grant the selling
        securityholders the right to acquire common stock within 60 days of
        January 8, 1999;

     .  the conversion price of the Series B preferred stock in effect as of the
        date of this prospectus, which is $6.0374;

                                       41
<PAGE>
 
     .  the exercise price of the warrants in effect as of the date of this
        prospectus, which is $3.47;

     .  the selling stockholders will sell all of the securities offered by this
        prospectus; and

     .  the selling securityholders will not sell any other of our securities
        than they may own.

          Notwithstanding these assumptions, the selling securityholders may
sell less than all of the shares listed on the table.  In addition, the shares
listed below may be sold pursuant to this prospectus or in privately negotiated
transactions.  Accordingly, we cannot estimate the number of shares of common
stock that the selling stockholders will sell under this prospectus.

<TABLE>
<CAPTION>
                                                          Percent of                      Percent of
                                         Number           Outstanding      Number         Outstanding 
                                         of Shares        Shares           of Shares      Shares
                                         Beneficially     Beneficially     Beneficially   Beneficially
                                         Owned Prior      Owned Before     Owned After    Owned After
Name of Selling Stockholder              to Offering      the Offering     the Offering   the Offering
- --------------------------------------   --------------   ------------    -------------   ------------
<S>                                      <C>                <C>            <C>               <C>
Marshall Capital Management, Inc......   1,118,030 (1)      2.3%              0              0%
Castle Creek Technology Partners LLC..   1,366,482 (2)      2.9%              0              0%
Capital Ventures International........   1,242,257 (3)      2.6%              0              0%
</TABLE>

- -------------------                                        
1.   Consists of 745,353 shares of common stock issuable upon the conversion of
     Series B preferred stock and 372,677 shares of common stock issuable upon
     the exercise of warrants.

2.   Consists of 910,988 shares of common stock issuable upon the conversion of
     Series B preferred stock and 455,494 shares of common stock issuable upon
     the exercise of warrants.  Pursuant to a management agreement, Castle Creek
     Partners LLC shares voting and investment power with respect to the
     securities held by Castle Creek Technology Partners LLC with Castle Creek
     Technology Partners LLC.  John Ziegelman and Daniel Asher, as managing
     members of Castle Creek Partners LLC, may be deemed as a result thereof to
     be beneficial owners of such securities.  Messrs. Asher and Ziegelman
     disclaim such beneficial ownership.

3.   Consists of 828,171 shares of common stock issuable upon the conversion of
     Series B preferred stock and 414,086 shares of common stock issuable upon
     the exercise of warrants.  Heights Capital Management, Inc., a Delaware
     corporation, the investment manager for Capital Ventures International, has
     voting control and investment discretion over transactions by Capital
     Ventures International.

                                       42
<PAGE>
 
                               RECENT DEVELOPMENTS

          In December 1998 and January 1999, we exchanged an aggregate of
$39,889,000 of our 4 1/4% convertible subordinated notes due 2002 for an
aggregate of 5,279,257 shares of unrestricted common stock.  We may engage in
similar transactions in the future.

                               PLAN OF DISTRIBUTION

          The shares of common stock will be offered and sold by the selling
stockholders for their own accounts.  Each selling stockholder will act
independently of P-Com in making decisions with respect to the timing, manner
and size of each sale.  We will not receive any proceeds from the sale of the
common stock through this prospectus.  We have agreed to pay the expenses of
registration of the common stock offered hereby, including legal and accounting
fees, but excluding underwriter's discounts and commissions, if any.

          The shares offered hereby may be sold from time to time at negotiated
prices, at fixed prices which may be changed, at market prices prevailing at the
time of sale or at prices related to prevailing market prices.  The selling
stockholders may effect such transactions in the over-the-counter market or any
exchange on which the securities are listed, by selling the shares to or through
broker-dealers, including block trades in which brokers or dealers will attempt
to sell the shares as agent but may position and resell the block as principal
to facilitate the transaction, or in one or more underwritten offerings on a
firm commitment or best effort basis.  sales of selling stockholders' shares may
also be made pursuant to Rule 144 under the Securities Act, where applicable.

          To the extent required under the Securities Act, the aggregate amount
of selling stockholders' shares being offered and the terms of the offering, the
names of any such agents, brokers, dealers, transferees or underwriters and any
applicable fee or commission with respect to a particular offer will be set
forth in an accompanying prospectus supplement.  Any underwriters, dealers,
brokers or agents participating in the distribution of the shares may receive
compensation in the form of underwriting discounts, concessions, commission or
fees from the selling stockholders and/or purchasers of selling stockholders'
shares for whom they may act (which compensation as to a particular broker-
dealer might be in excess of customary commissions).  Each selling stockholder
will be responsible for any such payments. The aggregate proceeds to a selling
stockholder from the sale of its shares offered by this prospectus will be the
purchase price of such shares less discounts or commissions, if any.

          From time to time, the selling stockholders may pledge, hypothecate or
grant a security interest in some or all of the shares, and the pledgees,
secured parties or persons to whom such securities have been hypothecated shall,
upon foreclosure in the event of default, be deemed to be selling stockholders
under this prospectus.  From time to time, the selling stockholders may also
transfer, pledge, donate or assign shares to lenders or others and each of such
persons will be deemed to be a selling stockholder for purposes of this
prospectus.  The number of the selling stockholders' shares beneficially owned
by a selling stockholder who transfers, pledges, donates or assigns shares will
decrease as and when they take such actions.  The plan of distribution for
selling stockholders' shares sold by this prospectus will otherwise remain
unchanged, except that the transferees, pledgees, donees or other successors
will be a 

                                       43
<PAGE>
 
selling stockholder under this prospectus. There is, however, no assurance that
any selling stockholder will sell any or all of the shares described in this
prospectus, and any selling stockholder may transfer, devise or gift such
securities by other means not described in this prospectus.

          In addition, the selling stockholders may, from time to time, sell
short the shares of P-Com, and in such instances, this prospectus may be
delivered in connection with such short sales and the shares offered hereby may
be used to cover such short sales.  A selling stockholder may enter into hedging
transactions with broker-dealers, and the broker-dealers may engage in short
sales of the shares in the course of holding the positions they assume with such
selling stockholder, including, without limitation, in connection with
distribution of the shares by such broker-dealers.  The selling stockholders may
also enter into option or other transactions with broker-dealers that involve
the delivery of the shares to the broker-dealers, who may then resell or
otherwise transfer such shares.  The selling stockholders may also loan or
pledge the shares to a broker-dealer and the broker-dealer may sell the shares
as loaned or upon a default may sell or otherwise transfer the pledge shares.

          The selling stockholders, any underwriter, any broker-dealer or any
agent that participates with the selling stockholders in the distribution of the
shares may be deemed to be "underwriter" within the meaning of the Securities
Act, and any discounts, commissions or concessions received by them and any
profit on the resales of the shares purchased by them may be deemed to be
underwriting commissions under the Securities Act.

          To comply with securities laws of certain states, if applicable, the
shares will be sold in such jurisdictions only through registered or licensed
brokers or dealers.  In addition, in certain states the shares may not be sold
unless they have been registered or qualified for sale in the applicable state
or an exemption from the registration or qualification requirement is available.

          Pursuant to a Registration Rights Agreement entered into in connection
with the Series B preferred stock financing, we have agreed to keep the
registration statement of which this prospectus is a part continuously effective
until the earlier of the date that all of the shares issued or issuable upon
conversion of the Series B preferred stock or exercise of the warrants have been
sold or until all such shares are immediately freely saleable under Rule 144.
In this regard, we are required to supplement and/or amend the registration
statement of which this prospectus is a part if more shares than are registered
hereby are issued or issuable upon conversion of the Series B preferred stock
and exercise of the warrants or to supplement or change the selling stockholders
hereunder.  The Registration Rights Agreement requires P-Com to indemnify the
selling stockholders, any underwriter and the respective directors, officers,
partners, members, employees, agents and controlling persons of each selling
stockholder against certain liabilities in connection with the offer and sale of
the shares hereunder, including under the Securities Act.  Similarly, each
selling stockholder is required to indemnify P-Com and its directors, the
officers who sign the registration statement of which this prospectus is a part,
it employees, agents and controlling persons against certain liabilities in
connection with the offer and sale of the shares hereunder, including the
Securities Act, to the extent that liability occurs as a result of reliance with
written information furnished to P-Com by such selling stockholder expressly for
use in connection with the registration statement of which this prospectus is a
part.  

                                       44
<PAGE>
 
To the extent indemnification is prohibited, the selling stockholders and P-Com
are required to contribute to payments the parties may be required to make in
respect of otherwise indemnifiable claims.

                                  LEGAL MATTERS

          The validity of the common stock offered in this prospectus and
certain other legal matters will be passed upon for the Company by Brobeck,
Phleger & Harrison LLP, Palo Alto, California.  As of the date of this
prospectus, attorneys of Brobeck, Phleger & Harrison LLP and family members
thereof beneficially owned an aggregate of approximately 64,000 shares of the
Company's common stock.

                                     EXPERTS

          The financial statements incorporated in this prospectus by reference
to the Annual Report on Form 10-K of P-Com, Inc. for the year ended December 31,
1997 have been so incorporated by reference in the report of
PricewaterhouseCoopers LLP, independent accountants, given on the authority of
said firm as experts in auditing and accounting.

                                       45
<PAGE>
 
                               TABLE OF CONTENTS
<TABLE>
<CAPTION>
                                                            Page
                                                            ----
<S>                                                         <C>
 
The Company..............................................    2
Risk Factors.............................................    3
Where You Can Find More Information......................   28
Use of Proceeds..........................................   30
Dividend Policy..........................................   30
Premium..................................................   30
Ratio (Deficiency) Of Earnings (Loss) To Fixed Charges...   30
Description of Our Capital Stock.........................   31
Selling Stockholders.....................................   41
Recent Developments......................................   43
Plan of Distribution.....................................   43
Legal Matters............................................   45
Experts..................................................   45
</TABLE>


                               13,000,000 Shares
                                        

                                  P-COM, INC.
                                  common stock
                                        


                                  -------------
 
                                   PROSPECTUS
                                        
                                  -------------


                               ___________, 1999


================================================================================
<PAGE>
 
                                    PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14   Other Expenses of Issuance and Distribution.

          All expenses incurred in connection with the issuance and distribution
of the securities being registered will be paid by the Registrant.  The
following is an itemized statement of these expenses. All amounts except
Securities and Exchange Commission and Nasdaq Stock Market listing fees and the
placement agent fee to PaineWebber Incorporated are estimates.

<TABLE>
<S>                                                                                      <C>
Registration Statement-SEC............................................................           $ 25,806.31
Nasdaq listing fee....................................................................           $    17,500
Printing and engraving................................................................           $    15,000
Legal fees............................................................................           $   325,000
Accounting fees and expenses..........................................................           $   100,000
Placement agent fee to PaineWebber Incorporated.......................................           $   657,754
Miscellaneous.........................................................................           $300,000.69
                                                                                                 -----------
     Total............................................................................           $ 1,441,061
                                                                                                 ===========
</TABLE>

Item 15   Indemnification of Directors and Officers.

          Section 145 of the Delaware General Corporation Law ("Section 145")
authorizes a court to award or a corporation's Board of Directors to grant
indemnification to directors and officers in terms sufficiently broad to permit
such indemnification under certain circumstances for liabilities (including
reimbursement for expenses incurred) arising under the Securities Act.  Article
VII of the Registrant's Bylaws provides for mandatory indemnification of its
directors and permissible indemnification of its officers, employees and other
agents to the maximum extent permitted by the Delaware General Corporation Law.
The Registrant has entered into Indemnification Agreements with its officers and
directors which are intended to provide the Registrant's officers and directors
with further indemnification to the maximum extent permitted by the Delaware
General Corporation Law.  Reference is also made to the underwriting agreements,
the purchase agreements and registration rights agreements entered into in
connection with the Company's three public offerings, the Company's nine
acquisitions, the sale of the Notes and the sale of the Series B preferred
stock, each of which contains provisions indemnifying officers and directors of
the Company and other persons against certain liabilities, including, in some
cases, those arising under the Securities Act.

Item 16   Exhibits.

<TABLE>
<CAPTION>
 Exhibit No.                                Description
- ------------     --------------------------------------------------------------
<S>              <C>
    3.2          Restated Certificate of Incorporation, as filed with the
                 Delaware Secretary of State filed on March 9, 1995*

    3.2A         Certificate of Amendment of Restated Certificate of
                 Incorporation, as filed with the Delaware Secretary of State on
                 June 16, 1997*
</TABLE> 

                                      II-1

<PAGE>
 
<TABLE> 
<S>          <C>       
3.2C         Certificate of Designation for the Series A Junior Participating preferred stock,
             as filed with the Delaware Secretary of State on December 21, 1998*
             
3.2D         Certificate of Designation for the Series B Convertible Participating preferred
             stock, as filed with the Delaware Secretary of State on December 21, 1998*
             
3.2E         Certificate of Correction of Certificate of Designations for the Series B
             Convertible Participating preferred stock, as filed with the Delaware Secretary of
             State on December 23, 1998*
             
4.1          Specimen of common stock Certificate*
             
4.8          Amended and Restated Rights Agreement, dated as of December 21, 1998, between the
             Company and BankBoston, N.A.*
             
5.1          Opinion of Brobeck, Phleger & Harrison LLP*
             
10.22B       Low Capacity Digital Radio Agreement dated February 13, 1995 by and between the
             Company and Siemens
             
10.38        Securities Purchase Agreement dated as of December 21, 1998 by and among the
             Company and the purchasers listed therein*
             
10.39        Registration Rights Agreement dated as of December 21, 1998 by and among the
             Company and the purchasers listed therein*
             
10.40A       Warrant to purchase shares of common stock, dated as of December 21, 1998, issued
             by the Company to Castle Creek Technology Partners LLC*
             
10.40B       Warrant to purchase shares of common stock, dated as of December 21, 1998, issued
             by the Company to Capital Ventures International*
             
10.40C       Warrant to purchase shares of common stock, dated as of December 21, 1998, issued
             by the Company to Marshall Capital Management, Inc.*
             
12.2         Ratio of Earnings to Fixed Charges*
             
23.1         Consent of PricewaterhouseCoopers LLP*
             
23.2         Consent of Brobeck, Phleger & Harrison LLP (included in Exhibit 5.1)*
             
24.1         Powers of Attorney (including in the signature page of this registration statement)*

</TABLE>

- --------------------------
*Previously filed.

                                      II-2
<PAGE>
 
     * Previously filed.
 
Item 17   Undertakings.

          The undersigned registrant hereby undertakes:

          (1)  To file, during any period in which offers or sales are being
     made, a post-effective amendment to this registration statement:

                   (a) To include any prospectus required by Section 10(a)(3) of
           the Securities Act;

                   (b) To reflect in the prospectus any facts or events arising
           after the effective date of the registration statement (or the most
           recent post-effective amendment thereof) which, individually or in
           the aggregate, represent a fundamental change in the information set
           forth in the registration statement. Notwithstanding the foregoing,
           any increase or decrease in volume of securities offered (if the
           total dollar value of securities offered would not exceed that which
           was registered) and any deviation from the low or high end of the
           estimated maximum offering range may be reflected in the form of
           prospectus filed with the Commission pursuant to Rule 424(b) if, in
           the aggregate, the changes in volume and price represent no more than
           20 percent change in the maximum aggregate offering price set forth
           in the "Calculation of Registration Fee" table in the effective
           registration statement.

                   (c) To include any material information with respect to the
           plan of distribution not previously disclosed in the registration
           statement or any material change to such information in the
           registration statement.

           (2) That, for the purpose of determining any liability under the
     Securities Act of 1933, each such post-effective amendment shall be deemed
     to be a new registration statement relating to the securities offered
     therein, and the offering of such securities at that time shall be deemed
     to be the initial bona fide offering thereof.

            (3) To remove from registration by means of a post-effective
     amendment any of the securities being registered which remain unsold at the
     termination of the offering.

          Insofar as indemnification for liabilities arising under the
Securities Act of 1933 may be permitted to directors, officers and controlling
persons of the Registrant pursuant to the foregoing provisions, or otherwise,
the Registrant has been advised that in the opinion of the Securities and
Exchange Commission such indemnification is against public policy as expressed
in the Securities Act of 1933 and is, therefore, unenforceable.  In the event
that a claim for indemnification against such liabilities (other than the
payment by the Registrant of expenses incurred or paid by a director, officer or
controlling person of the Registrant in the successful defense of any action,
suit or proceeding) is asserted by such director, officer or controlling person
in connection with the securities being registered, the Registrant will, unless
in the opinion of its counsel the matter has been settled by controlling
precedent, submit to a court of 

                                      II-3
<PAGE>
 
appropriate jurisdiction the question whether such indemnification by it is
against public policy as expressed in the Securities Act of 1933 and will be
governed by the final adjudication of such issue.

          The undersigned Registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act of 1933, each filing of the
Registrant's annual report pursuant to Section 13(a) or Section 15(d) of the
Securities Exchange Act of 1934 that is incorporated by reference in the
registration statement shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

                                      II-4
<PAGE>
 
                                   SIGNATURES

          Pursuant to the requirements of the Securities Act of 1933, as
amended, the Registrant, P-Com, Inc., a corporation organized and existing under
the laws of the State of Delaware, certifies that it has reasonable grounds to
believe that it meets all of the requirements for filing on Form S-3 and has
duly caused this amendment no. 1 to this registration statement to be signed on
its behalf by the undersigned, thereunto duly authorized, in the City of
Campbell, State of California, on the 3rd day of March, 1999.

                                 P-COM, INC.


                                 By:   /s/ George P. Roberts
                                    ----------------------------------------
                                    George P. Roberts, Chairman of the Board
                                    and Chief Executive Officer

                                      II-5
<PAGE>
 
                               INDEX TO EXHIBITS

<TABLE>
<CAPTION>

   Exhibit No.                                                     Description
- --------------         ------------------------------------------------------------------------------------
<S>                    <C>
   3.2                 Restated Certificate of Incorporation, as filed with the Delaware Secretary of
                       State filed on March 9, 1995*
           
   3.2A                Certificate of Amendment of Restated Certificate of Incorporation, as filed with
                       the Delaware Secretary of State on June 16, 1997*
           
   3.2C                Certificate of Designation for the Series A Junior Participating preferred stock,
                       as filed with the Delaware Secretary of State on December 21, 1998*
           
   3.2D                Certificate of Designation for the Series B Convertible Participating preferred
                       stock, as filed with the Delaware Secretary of State on December 21, 1998*
           
   3.2E                Certificate of Correction of Certificate of Designations for the Series B
                       Convertible Participating preferred stock, as filed with the Delaware Secretary of
                       State on December 23, 1998*
           
   4.1                 Specimen of common stock Certificate*
           
   4.8                 Amended and Restated Rights Agreement, dated as of December 21, 1998, between the
                       Company and BankBoston, N.A.*
           
   5.1                 Opinion of Brobeck, Phleger & Harrison LLP*
           
   10.22B              Low Capacity Digital Radio Agreement dated February 13, 1995 by and between the
                       Company and Siemens
           
   10.38               Securities Purchase Agreement dated as of December 21, 1998 by and among the
                       Company and the purchasers listed therein*
           
   10.39               Registration Rights Agreement dated as of December 21, 1998 by and among the
                       Company and the purchasers listed therein*
                       
   10.40A              Warrant to purchase shares of common stock, dated as of December 21, 1998, issued
                       by the Company to Castle Creek Technology Partners LLC*
                       
   10.40B              Warrant to purchase shares of common stock, dated as of December 21, 1998, issued
                       by the Company to Capital Ventures International*
                       
    10.40C             Warrant to purchase shares of common stock, dated as of December 21, 1998, issued
                       by the Company to Marshall Capital Management, Inc.*
                       
    12.2               Ratio of Earnings to Fixed Charges*
                       
    23.1               Consent of PricewaterhouseCoopers LLP*
                       
    23.2               Consent of Brobeck, Phleger & Harrison LLP (included in Exhibit 5.1)*
           
    24.1               Powers of Attorney (including in the signature page of this registration statement)*

</TABLE>

     * Previously filed.

<PAGE>
 
                                                                     EX-10.22(B)

SIEMENS


Notwithstanding the forecast attachment to the agreement, first deliveries and
relevant P.O.'s are agreed as follows:

<TABLE>
<CAPTION>
P.O. Number          STI Internal             Quantity                   
- -----------          ------------             --------
                working order reference     and eqt. type
                -----------------------     -------------
<S>             <C>                         <C> 
C059/07301               51KK59                23     38
C059/07302               711417                 2      2
C059/07303               51G807                 4      2
C059/07304               51G770                90     12
                                                       8
</TABLE>


Deliveries:    -  All of the 23 GHz type eqt. Will be delivered during
- ----------
                  April 1995 at an expected rate of 25 eqt./week.

               -  The 38 GHz type are 4FSK modulation and for delivery before
                  March 10th 1995 with the expection of last P.O. C059//07304
                  for which 2FSK  eqt. Are requested, subject to final customer
                  acceptance, and for delivery FCA Campbell end of February 
                  1995.

Detail configuration of the above orders will be transmitted as soon as part 
number of the products will be communicated to Siemens Telecomicazioni S.p.A

Milano, 13/02/1995

[SIGNATURE ILLEGIBLE]                                 /s/ Pier Antoniucci
- --------------------------                         ----------------------------
        For STI                                               For P-COM

<PAGE>
 
     P_Com Tel-Link Forecast                             Rev. D1 2/13/1995


<TABLE> 
<CAPTION> 
- ----------------------------------------------------------------------------------------------------------------------------     
ITEM        DESCRIPTION                              Feb 95   Mar 95   Apr 95   May 95   Jun 95   Jul 95  Aug 95   Total T/R     
                                                     23 28    23 28    23 28    23 28    23 28    23 28   23 28    23 28         
<S>         <C>                                      <C>      <C>      <C>      <C>      <C>      <C>     <C>      <C>           
- -----------------------------------------------------------------------------------------------------------------------------    
     1.10  3X64 kb/s 1 + O (23 G)                                                                                                
- -----------------------------------------------------------------------------------------------------------------------------    
     1.11  3x64 kb/s 1 + O (38G)                                                                                                 
- -----------------------------------------------------------------------------------------------------------------------------    
     1.20  2Mb/s 1 + O (23G)                                                              10       10      10       10           
- -----------------------------------------------------------------------------------------------------------------------------    
     1.21  2Mb/s 1 + 0 (38G)                                                                                                     
- -----------------------------------------------------------------------------------------------------------------------------    
     1.30  2x2Mb/s 1 + 0 (23G)                                 12        4       10       14        4       4       48           
- -----------------------------------------------------------------------------------------------------------------------------    
     1.31  2x2Mb/s 1 + 0 (38G)                                                   10       10                        20        
- -----------------------------------------------------------------------------------------------------------------------------    
     1.40  4x2Mb/s 1 + 0 (23G)                                 10       14       16       14       12       4       70           
- -----------------------------------------------------------------------------------------------------------------------------    
     1.41  4x2Mb/s 1 + 0 (38G)                                           6        4       10       10      10       40        
- -----------------------------------------------------------------------------------------------------------------------------    
     1.50  Universal 1 + 0 (23G)                       2        2        2                                           6           
- -----------------------------------------------------------------------------------------------------------------------------    
     1.51  Universal 1 + 0 (38G)                       2                                                             2           
- -----------------------------------------------------------------------------------------------------------------------------
     1.60  Univ. Cap & Mod. 1 + 0 (23G)                         
- -----------------------------------------------------------------------------------------------------------------------------    
     1.61  Univ. Cap & Mod. 1 + 0 (38G)                                                                                           
- -----------------------------------------------------------------------------------------------------------------------------    
     2.10  2Mb/s 1 + 1 (23G)                                                                                                  
- ----------------------------------------------------------------------------------------------------------------------------- 
     2.11  2Mb/s 1 + 1 (38G)                                                                                                  
- ----------------------------------------------------------------------------------------------------------------------------- 
     2.20  2x2Mb/s 1 + 1 (23G)                                                                                                
- ----------------------------------------------------------------------------------------------------------------------------- 
     2.21  2x2Mb/s 1 + 1 (38G)                                                                                                
- ----------------------------------------------------------------------------------------------------------------------------- 
     2.30  4x2Mb/s 1 + 1 (23G)                                 16        8       20       32       32      32      140        
- ----------------------------------------------------------------------------------------------------------------------------- 
     2.31  4x2Mb/s 1 + 1 (38G)                                                                              8        8     
- ----------------------------------------------------------------------------------------------------------------------------- 
     2.40  Universal 1 + 1 (2/4) 23G                   8        4                                          12                 
- ----------------------------------------------------------------------------------------------------------------------------- 
     2.41  Universal 1 + 1 (2/4)(38G)                  4        4                                                    8     
- ----------------------------------------------------------------------------------------------------------------------------- 
     2.50  Univ. Cap & Mod. 1 + 1 (23G)                                                                                        
- ----------------------------------------------------------------------------------------------------------------------------- 
     2.51  Univ. Cap & Mod. 1 + 1 (38G)                                                                                        
- ----------------------------------------------------------------------------------------------------------------------------- 
</TABLE> 

All the configuration of items 1,2,7,8 include: 48V PSU, Antenna (30cm-38G/60cm-
23G) w/pole mount, link manager port, FEC, 4 FSK modulation, inat. material and
manual

<PAGE>
 

     P_Com Tel-Link Forecast                            Rev.01    2/13/1995

<TABLE> 
<CAPTION> 
- --------------------------------------------------------------------------------------------------------------------------------  
  Item         Description                Feb 95    Mar 95    Apr 95   May 95    Jun 95    Jul 95    Aug 95      TOTAL T/R 
                                          23   38  23   38    23   38  23   38    23   38  23   38    23   38    23     38 
- --------------------------------------------------------------------------------------------------------------------------------  
<S>                                       <C>       <C>       <C>      <C>       <C>       <C>       <C>         <C> 
   7.10        8X2Mb/s 1+0 (23G)
- --------------------------------------------------------------------------------------------------------------------------------  
   7.11        8X2Mb/s 1+0 (38G)
- --------------------------------------------------------------------------------------------------------------------------------  
   7.20        16X2Mb/s 1+0 (23G)
- --------------------------------------------------------------------------------------------------------------------------------  
   7.21        16X2Mb/s 1+0 (38G)
- --------------------------------------------------------------------------------------------------------------------------------  
   7.30        Universal 1+0 (8/16) 23G
- --------------------------------------------------------------------------------------------------------------------------------  
   7.31        Universal 1+0 (8/16) 38G
- --------------------------------------------------------------------------------------------------------------------------------  
   8.10        8X2Mb/s 1+1 (23G)
- --------------------------------------------------------------------------------------------------------------------------------  
   8.11        8X2Mb/s 1+1 (38G)
- --------------------------------------------------------------------------------------------------------------------------------  
   8.20        16X2Mb/s 1+1 (23G)                                        8                                         8
- --------------------------------------------------------------------------------------------------------------------------------  
   8.21        16x2Mb/s 1+1 (38G)                                                        5                                5
- --------------------------------------------------------------------------------------------------------------------------------  
   8.30        Universal 1+1 (8/16) 23G
- --------------------------------------------------------------------------------------------------------------------------------  
   8.31        Universal 1+1 (8/16) 38G        
- --------------------------------------------------------------------------------------------------------------------------------  
                       TOTAL T/R           10    6  14    4    28    6  54   14    70   25  58   10    50   18   314     83
- --------------------------------------------------------------------------------------------------------------------------------  
   4.10        24 V PSU
- --------------------------------------------------------------------------------------------------------------------------------  
   4.20        EOW - Bridging               2        8   
- --------------------------------------------------------------------------------------------------------------------------------  
   4.30        EOW    PT -  PT              4    4  28    2    24    6  35   14    54   22  38   10    38
- --------------------------------------------------------------------------------------------------------------------------------  
   4.40        dat channel
- --------------------------------------------------------------------------------------------------------------------------------  
   4.70        120 OHM  I/O
- --------------------------------------------------------------------------------------------------------------------------------  
   4.01        H.P. Amplifier 23G          10       28         10       10
- --------------------------------------------------------------------------------------------------------------------------------  
</TABLE> 

All the configurations of items 1,2,7,8 include: 48v PSU, Antenna 
(30cm-38G/80cm-23G) w/pole mount, link manager port, FEC, 4 FSK modulation, ??, 
material and manual.
<PAGE>
 
                          LOW CAPACITY DIGITAL RADIO
                               PRODUCT AGREEMENT

This Agreement is made by and between:

P-COM INC. a corporation under the law of Delaware and having its registered
office at 200 E. Hacienda Ave. Campbell, CA 95008, hereinafter referred to as 
"P-COM"

and

SIEMENS TELECOMUNICAZIONI S.P.A. a corporation under the law of Italy and having
its registered office at 20060 Cassina de' Pecchi, Italy, S.S. Padana Superiore
km. 158, hereinafter referred to as "Siemens"

(P-COM and Siemens are hereinafter referred to jointly as the "Parties" and
individually as a "Party")

whereas P-COM has developed the Tel-Link radio Product Line presently covering
the 23, 38 and 50 GHz frequency bands and allowing the transport of one or more
1.5 (T1) or 2 (E1) Mbit/s traffic signals;

whereas Siemens is willing to introduce the products of the Tel-Link Product
Line into its own catalogue and to place orders to buy certain amounts of these
products;

being the recitals hereinabove integral part of the present Agreement


                   NOW THEREFORE THE PARTIES AGREE AS FOLLOWS
                                        

ARTICLE 1. PURPOSE OF THE AGREEMENT

1.1 The purpose of this Agreement is to set forth rules that allow Siemens to
include the Tel-Link Product Line (hereinafter "the Products", which terms shall
also be construed as designating equipment, subset, assembly or part of the Tel-
Link Product Line where The context so admits) in its products catalogue.

1.2 As a consequence P-COM agrees to Sell and Siemens agrees to buy the Products
in accordance with purchase orders that may be issued from time to time by
Siemens to The price, terms and conditions herein contained.

ARTICLE 2. SPECIFICATIONS OF THE PRODUCTS AND RELEVANT SIEMENS ACCEPTANCE TEST

2.1 P-COM grants that the characteristics and specifications of the Products at
the date of the Agreement are those listed in the Attachment I hereto.

                                  Page 1 of 9
<PAGE>
 
2.2  In the spirit of the present Agreement, should P-COM decide to modify the
Products with enhancements or extensions, P-COM is willing to make available to
Siemens the above mentioned enhancements and extensions and to timely provide
Siemens with sufficient information and documentation in order to promote the
enhanced and extended Products in the market.

2.3  if the enhanced Products should not grant full backword compatibility, P-
COM undertakes to produce the previous version of the Products for Siemens for a
minimum period of 24 months after the commercial availability of the enhanced
Products.

2.4 The characteristics and conditions related with the Quality Assurance are
detailed in the Attachment 2 hereto.


ARTICLE 3. MARKETING RIGHTS

3.1 Siemens will have the non exclusive right to promote, sell or lease, as a
single equipment or together with other products or systems, the Products in any
market freely and with no limitations.

3.2 Siemens will have the right to include the Products in its catalogue with
Siemens trade-mark and brand name. To this purpose P-COM agrees to deliver to
Siemens the Products properly marked and externally coloured in accordance with
Siemens' instructions, provided that such instructions will not be in conflict
with the production process of the Products.

3.3 P-COM warrants that it does not have nor will undertake any obligation with
anybody conflicting with the rights granted to Siemens pursuant to this
Agreement


ARTICLE 4. PRICES

4.1 The prices from P-COM to Siemens of the Product are given in the Attachment
3 to this Agreement. Prices are fixed throughout each calendar year and will be
revised annually in a joint meeting to be held by the Parties by 30th of
September of the previous year. Basic criterion adopted in defining price is to
allow Siemens to withhold a reasonable margin, estimated by the Parties in
approximately 25% on the most competitive market price recognized by the Parties
provided P-COM can also obtain a reasonable margin.

4.2 Price vs. quantity matrix is given in the Attachment 3, based on the total
number of transmitters/receivers of the Products ordered by Siemens for delivery
within the year.
The initial price level of each year will be defined during the annual meeting
according to the quantity objective indicated by Siemens.

In case after six months of each year the total ordered transmitter/receiver do
not reach 1/3 (one third) of the minimum quantity of the initial price level,
The purchase order price for the second six months will automatically switch to
the lower quantity level.

Viceversa, whenever during a year Siemens inform P-COM that the total expected
ordered quantity for the same year would exceed the minimum of the initial price
level agreed for that year, the purchase order price will switch to the higher
quantity level three months after the notification by Siemens of the higher
volume.

For year 1995 the initial price level will be level 3 while the quantities in
Attachment 3 have to be considered reduced by 1/3 (one third).

                                  Page 2 of 9

<PAGE>
 
4.3 In the event that during the one year time frame of validity of certain
price levels, the competitive market price - which is used as reference in
defining price - reduces considerably, the Parties agree to meet and jointly
review the price in accordance with such modified market conditions and
following the basic criterion indicated at point 4.1.


ARTICLE 5. CONDITIONS OF SUPPLY

5.1 Unless otherwise agreed in relation with a specific project the following
terms and conditions shall be applicable to all orders for the purchase of the
Products (or portion thereof) to be supplied by P-COM to Siemens and such terms
and conditions shall take preference over any conflicting or inconsistent terms
of Siemens' purchase orders or P-COM conditions of sale.

5.2 Siemens, shall purchase the Products by issuing a written purchase order, to
be transmitted by fax, identifying the transmitters/receivers of the Products to
be purchased, the quantity, price, total purchase order price, shipping
instructions (if any), delivery dates and place and any other specific
information impacting on the equipment delivery schedule. P-COM shall confirm,
by confirmed telefax, any purchase order within one (1) week of P-COM's receipt
thereof, provided its terms are in accordance with those of this Agreement or
better ones, if so agreed by the Parties.

5.3 Price, in U.S. dollars are defined in the Attachment 3 to this Agreement.
Price shall include the full cost of ordered products, suitably packed.

5.4 Depending of the specific indications of the purchase order, the ordered
Products will be delivered, at the price indicated in Attachment 3, in one of
the following ways:

- -  for European Communities and E.F.T.A. Countries and other European Countries
   with equivalent import custom duties, FCA country of destination, import
   custom duties paid, (in accordance with Incoterms 1990);

- -  for other European Countries with import custom duties higher than E.E.C.
   (7.5%), FCA country of destination, import custom duties paid (in accordance
   with Incoterms 1990), but P-COM will debit the duties incremental difference
   to Siemens;

- -  for all the other Countries, FCA Campbell U.S.A. (in accordance with
   Incoterms 1990). Delivery dates will be those specified in the order and in
   any case the lead time will not be less than the standard lead time declared
   by P-COM with the exception of different lead time accepted by P-COM in
   writing for specific orders.

P-COM declares that standard lead time from the reception of purchase order to
delivery FCA is 4 weeks provided that the order is within the boundaries of the
monthly rolling forecast covering the subsequent 3 months as defined herebelow;
any variations in standard lead time will be promptly notified by written notice
to Siemens.

5.5 Siemens will issue monthly a rolling forecast (with the best possible
indications of frequency, bit rate and configurations) indicating requested
deliveries for the coming six months - divided in months - of which the first
month is covered by firm orders and the subsequent two months are binding in
terms of quantities and configurations.

It is understood that the binding forecast of the subsequent two months allow
Siemens to reduce actual orders of 15% in the second month and of 30% in the
third month.

First forecast is in Attachment 4; next forecast will be issued by Siemens on
the last working day of the month that follows the date of signature of the
Agreement.


                                  Page 3 of 9
<PAGE>
 
5.6 Unless otherwise agreed by the Parties in relation with a specific project,
Siemens' payment to P-COM shall be made for 100% of the relevant price of each
delivered batch, thirty (30) days end of the month date of invoice after
shipment of each complete batch of supply and issuance of relevant invoice.

5.7 In the event that P-COM fails for reasons other than causes of force majeure
to deliver FCA each batch of the Products or parts thereof at the respective
dates accepted in the relevant purchase order, Siemens may claim from P-COM
penalties equivalent to 1% (one percent) of the corresponding price of the
delayed batch per week of delay without exceeding 10% (ten percent) of said
price. P-COM shall inform immediately Siemens in the event it anticipates any
delay in its deliveries and the Parties shall make their best efforts to
minimise the consequences thereof.

If due to joint efforts of the Parties, the delay in P-COM deliveries does not
delay Siemens' performance of its obligation towards its customer and therefore
no penalties are charged to Siemens, P-COM may elect to reimburse in full to
Siemens all extra or special costs incurred by Siemens during above mentioned
joint efforts instead of being charged penalties hereunder.

In the event Siemens cancels or delays by more than three months any shipment
firmed up in the first three months of the rolling forecast, P-COM will make its
best efforts to redirect the shipment elsewhere to the extent possible. Failing
that P-COM shall inform Siemens in writing within 1 week and Siemens will be
under the obligation to buy and pay for the equipment as follows:

 . 100% of the equipment scheduled to ship in the month following cancellation;
 . 75% of the equipment scheduled to ship in the period contained between 1
  month and 2 months from the date of cancellation;
 . 50% of the equipment scheduled to ship in the period contained between 2
  months and 3 months from the date of cancellation.

Upon Siemens request P-COM cooperate in safely storing the equipment and will
advise Siemens of the cost to be born.

5.8 Notwithstanding the article 11 (Duration), P-COM undertakes to supply, for 5
year after the expiration of the present Agreement, equipment to Siemens for all
the expansions of the contracts signed by Siemens during the validity of the
present Agreement.

5.9 If specific market opportunities pursued by Siemens in relation with the
Products require a local content (either explicitly or as a competitive
advantage), P-COM and Siemens will jointly analyse and decide the best strategy
to be followed with respect to the granting of the manufacturing rights to the
third party addressed in the specific project. Terms and conditions for the
above manufacturing transfer will be negotiated in good faith by the Parties.


ARTICLE 6. INSPECTION ON THE PRODUCTS MANUFACTURING PROCESS.

6.1 In order to certify the quality of the Products and of its manufacturing
process and to allow Siemens to fulfill its contractual obligations with the
customer, Siemens may at any reasonable time inspect, in P-COM' and/or P-COM'
subcontractors' facilities, the various manufacturing steps of the products
which will or may be used in the performance of this Agreement and inspect and
test material and workmanship related to the Products 

                                  Page 4 of 9
<PAGE>
 
purchased hereunder Siemens shall give P-COM reasonable prior notice of the
dates on which the inspections will take place. All inspections and tests shall
be performed in such a manner as not to delay the work unduly.

The Parties will jointly define specific procedures to carry out the
inspections.


ARTICLE 7. WARRANTY AND SPARE PARTS

7.1  The Products to be supplied by P-COM hereunder shall be warranted to
conform to the specification which are or will become applicable as a result of
this Agreement and its Attachment 1 and to be free from design errors and
defects in materials and workmanship under normal use and service for a period
of twenty four (24) months after the date of the FCA delivery by P-COM provided
always that:

1. said warranty shall not extend to natural wear and tear or to any damage
   arising in consequence of negligence in handling the Products by Siemens or
   Siemens' customer;
2. Siemens shall have notified P-COM of the defects in writing or by confirmed
   telefax promptly after Siemens was informed of the defects.

7.2 The defect will be made good at P-COM expenses by repair or replacement at
P-COM option. P-COM shall warrant repaired or replaced items under the same
conditions as above, for a period expiring either simultaneously with the
initial warranty of the delivered product or six (6) months after installation
of such replaced item, whichever is later. Transportation and insurance cost for
defective or deficient parts returned to P-COM Shall be at Siemens' charge and
transportation and insurance costs for parts replaced or repaired by P-COM shall
be at P-COM charge.

The Parties agree that standard turnaround time for repair is two (2) weeks.

7.3  P-COM warranty is limited to the repair or replacement of defective or
deficient parts. Labour cost relating to the reinstallation of items repaired or
replaced under the above warranty shall be borne by Siemens.

7.4  P-COM shall furnish to Siemens, in accordance to orders that Siemens may
issue from time to time, any and all spare parts for the Products supplied to
Siemens under this Agreement. P-COM' commitment shall be valid for the term of
10 years after the sale of the last Products, and shall survive the termination
of this Agreement.

7.5  Terms and conditions set forth in this Agreement for the purchase of the
Products will be applied as well to the purchase of spare-parts


ARTICLE 8. TRAINING AND DOCUMENTATION

8.1  P-COM agrees to and will provide to Siemens all updated technical
documentation necessary for the correct installation, operation and maintenance
of the Products and to be delivered to the customer together with the Products.
The documentation will be issued in English and will be printed under Siemens
label and brand name. Siemens request for different languages will be evaluated
and, if approved by P-COM, quoted.


                                  Page 5 of 9
<PAGE>
 
8.2  Notwithstanding above article 8.1, P-COM will provide to Siemens all
updated technical information that allow Siemens to prepare a complete
documentation to be supplied to the customer together with the Products.

8.3  P-COM agrees to provide to Siemens, during 1995, a training course for
Siemens's personnel on installation, operation, maintenance and repair at no
cost for Siemens. The training course will take place in P-COM' facilities and
each Party will be responsible for costs and living expenses of its own
personnel.


ARTICLE 9.  DETAILED PROVISIONS IN RELATION WITH THE INTEGRATION OF THE
            PRODUCTS WITH OTHER SIEMENS PRODUCTS.

9.1  Whereas Siemens needs to incorporate the Products into its own TMN systems,
P-COM undertakes to modify its TMN interfaces and protocols in order to
correctly match the Siemens TMN systems.

P-COM and Siemens will cooperate in defining responsibilities and cost for
developing the above interfaces and protocols.

9.2  Whereas Siemens needs to incorporate the Products into their offering for
mobile radio networks, P-COM agrees to do its best efforts to ease mechanical
and electrical integration of the Products into Siemens Base Station (SBS)
equipment and related OMC.

9.3  For the purpose of integration into SBS and for other market requirements,
the "one-unit" ID4, presently available at prototype level, may be of interest
to Siemens, which will define in due time the requirements.

P-COM hereby agrees to start production delivery of the "one-unit" ID4 5 months
after a firm order of 300 units.

9.4  Siemens will also be allowed to mechanically and electrically integrate the
Products or parts thereof; into other products of the Siemens telecommunication
catalogue, in order to provide the customer with integrated network solutions.


ARTICLE 10. CONFIDENTIAL INFORMATION

10.1 Subject to the conditions of this paragraph 10.1 P-COM agrees that it will
defend Siemens, at its cost and expense, and will indemnify and hold harmless
Siemens, from and against all suits, claims, losses, damages and expenses
arising from any actual infringement of any third party's patent right based on
the sale or use of the Products purchased under this Agreement.

Siemens shall give P-COM prompt written notice of any such claim or action upon
Siemens become aware of same. In addition Siemens shall, at P-COM' cost, provide
all reasonable assistance in P-COM' defense or settlement efforts and P-COM
shall have sole authority to defend or settle such claim.

In the event that a final injunction is obtained against the sale or use of an
infringing product of the Products by Siemens and/or its customer, P-COM will,
at its expenses, obtain for Siemens and/or its customers:

1.   the right to continue using the Products,

2.   the right to replace or modify the Products so that it becomes non
     infringing or


                                  Page 6 of 9
<PAGE>
 
3  if such remedies are not reasonably available, grant to Siemens a refund or
   credit equal to the amount paid by Siemens to P-COM for the infringing
   product.

P-COM shall not be liable for any infringement of patent rights if such
infringement is based upon the use of the product in combination with other
equipment, software, products or devices not furnished by P-COM if such claim
would have been avoided in the absence of such combination.

The foregoing states the entire warranty and liability of P-COM with respect to
any alleged or actual patent rights infringement.

10.2 Each Party will hold in confidence as it does for its own confidential
information of the same importance, and use only for purposes of this Agreement,
all technical and commercial information (oral or written) provided by the other
Party and designated as confidential. Each Party warrants that the measures it
takes with respects to its own confidential information are reasonably
calculated to protect its confidentiality. These obligations will be subject to
exceptions for information which:

 .  is in the public domain, or enters the public domain through no fault of the
   receiving Party;
 .  is disclosed to third Parties by the disclosing Party without similar
   obligations of confidentiality;
 .  the receiving Party learns from a third Party without violation of the
   disclosing Party's rights with respect to the information;
 .  is already known to the receiving Party at the time of disclosure;
 .  is disclose with the prior written consent of the disclosing Party;
 .  is required to be disclosed by a court or other governmental body or to a
   prospective or current customer in the context of a tender offer or the
   execution of a supply contract.


ARTICLE 11. DURATION

11.1 This Agreement shall become effective at the date of signature by the
Parties and shall have an initial three-year term, automatically renewable for
successive one-year term, unless terminated by any Party upon written notice to
the other Party given at least six (6) months prior to the end of the initial
term or any subsequent one year period, or unless terminated as provided in the
Article 12 below.


ARTICLE 12. EARLY TERMINATION

12.1 Notwithstanding anything contained in the Article 11 of this Agreement as
far as the term is concerned, each Party hereto reserves and shall have the
right and option to terminate, by written notice, this Agreement at any time as
follows:

(a) in the event of breach of a material term of this Agreement (including non-
    payments of amounts due and the unability to fulfill obligations as per
    article 2.1, 7.1 and 7.2), this Agreement may be terminated by the Party not
    in breach by giving a 60 days' notice to the Party in-breach, except in the
    event such breach is remedied within such 60 days notice period or an agreed
    plan to remedy has been worked out by the Parties within the same 60 days
    period;

                                              *CONFIDENTIAL TREATMENT REQUESTED.

                                  Page 7 of 9
<PAGE>
 
(b) in the event the other Party shall make an assignment for the benefit of
    creditors, shall admit in writing its inability to pay its debts as they
    become due, or shall file a voluntary petition for relief under applicable
    bankruptcy laws, or shall file any other petition or similar request with a
    court having competent jurisdiction for voluntary relief, looking to
    reorganisation, arrangement, composition, readjustment, liquidation,
    custodianship, dissolution, winding-up or similar relief under bankruptcy
    laws or any similar laws or regulations, or shall file any answer admitting
    or not contesting the material allegations of a petition filed against it in
    any such proceeding, or shall seek or consent to or acquiesce in the
    appointment of any trustee, receiver, custodian or liquidator of such party
    with result to all or any substantial part of its properties.

12.1 In case of early termination generated by P-COM under the clause 12.1 (b)
Siemens will be granted the licence to manufacture and sale the Products without
any limitations and P-COM undertakes to promptly disclose to Siemens all
technical information, drawings, and manufacturing details that will allow
Siemens to exercise the above licence rights.


ARTICLE 13. FORCE MAJEURE

13.1 Neither of the Parties shall be liable for delays or failure in the
performance of this Agreement arising from any of the following causes, which
are beyond the control of the Party affected:

 .   acts of God, or public enemy or war (declared or undeclared);

 .   acts of governmental or quasigovernmental authorities or any department or
    agency thereof, or regulations or restrictions imposed by law or by court
    actions, including without limitations

    1. acts of persons engaged in subversive activities or sabotage;
    2. fires, flood, explosions, earthquakes, or other catastrophes;
    3. epidemics or quarantines;
    4. strikes, slowdowns, lock outs or labour stoppages or disputes of any
       kind;
    5. freight embargoes or interruptions of transportation;
    6. any other cause similar or dissimilar beyond the control of the Party
       concerned or its subcontractors.


ARTICLE 14. APPLICABLE LAW AND ARBITRATION

14.1 This Agreement shall be governed by and construed in accordance with the
Swiss Federal code of obligations excluding however any reference to the "1980,
Wien Sale Convention".

14.2 The Parties hereto agree that they shall use their best efforts to settle
amicably any disputes arising between them out of or in connection with this
Agreement. Failing that, any and all such disputes shall be finally and
exclusively settled through arbitration in Geneva Switzerland, by three
Arbitrators appointed and acting in accordance with the Rules of Conciliation
and Arbitration of the International Chamber of Commerce. Arbitration
proceedings shall be conducted in the English language.

Performance by the Parties relevant to this Agreement shall not be suspended
during the pendency of any dispute or arbitration hereunder.

                                  Page 8 of 9
<PAGE>
 
ARTICLE 15. LIMITATION OF LIABILITY

15.1 Except is otherwise expressely provided for in this Agreement, any Party
shall in no circumstances be liable to the other Party for any loss which is in
form or substances a loss of profits or loss of opportunity of earning profits
or for any consequential loss whatsoever.

ARTICLE 16. COMING INTO FORCE

16.1 The present Agreement will come into force when the two following events
have occured:

1. signature by the Parties;
2. approval by Siemens' Board.

The latter is considered given in absence of any written notice of non approval
within 30 days after the signature of the Agreement.


ARTICLE 17. NON DISCLOSURE CLAUSE

17.1  The Parties shall not disclose to any third party, in any form, the
existence and the contents of the present Agreement until its coming into force,
in accordance with the Art 16 hereabove.


IN WITNESS HEREOF this Agreement has been executed in duplicate



     For and on behalf of             For and on behalf of
  Siemens Telecomunicazioni                P-COM



by [SIGNATURE ILLEGIBLE]            by /s/ George Roberts
  --------------------------          ---------------------------

on 13 Feb. 1995                     on Feb. 13, 1995

                                  Page 9 of 9
<PAGE>
 
                                  SIDE LETTER

Whereas P-COM and Siemens Telecomunicazioni (jointly the Parties) have signed on
February 13, 1995 a Product Agreement;

notwithstanding the fact that such Agreement has not yet come into force, per
Art.16, the Parties undertake to immediately operate in accordance with the
provisions of the Agreement, with particular reference to forecast, orders and
deliveries.

In case the Agreement shall not come into force as per its Art. 16, the Parties
commit themselves to completely fulfill the obligations accepted in the period
from the date of signature to the date of non approval.

In case the Agreement shall come into force the obligations above will become
integral part of the Agreement.

Milan (Italy), the 13th of February 1995

For and on behalf of Siemens Telecomunicazioni        For and on behalf of P-COM
  
[SIGNATURE ILLEGIBLE]                                   /s/ George Roberts
- ------------------------                               -------------------------

??????                                                       Feb. 13, 1995
- ------------------------                               -------------------------
<PAGE>
 
                                  SIDE LETTER

With reference to the Agreement signed on February 13th 1995, Siemens and P-
Com agree on the level 4 of price discounts to be applied for orders to be
delivered within end [June 1995].

By that date Siemens will either confirm the level for the whole year or
indicate a new level, based on the results of the promotion activities.

Milan (Italy), the 13th of February 1995


For and on behalf of Siemens Telecomunicazioni        For and on behalf of P-COM

[SIGNATURE ILLEGIBLE]                                    /s/ George Roberts
- ------------------------                               -------------------------

________________________                               _________________________

<PAGE>
 
                                  SIDE LETTER

This is to confirm the commitment of Siemens Telecomunicazioni to purchase from
P-COM, in the period between the date of the OEM Agreement and the end of the
year 1996 a minimum of 80 (eighty) Tel Link 38 GHz radio terminals equipped with
30 cm antenna, 2FSK modulation and IEI capacity. The price, inclusive of freight
and duties will be US$ 7,700.

It is understood that, during this period ST will do its best efforts to sell
the 80 terminals in the above mentioned configuration. However, should ST fail
this respect, P-COM undertakes to reconfigure the equipment at 4 FSK (2x2 or 4x2
Mbit/s) at its own expenses.

Milan (Italy), the 13th of February 1995

For and on behalf of Siemens Telecomunicazioni        For and on behalf of P-COM

[SIGNATURE ILLEGIBLE]                                     /s/ George Roberts
- -------------------------                              -------------------------

???????                                                        Feb. 13, 1995
- -------------------------                              -------------------------

<PAGE>
 
                                  ATTACHMENT 1

                     PRODUCT SPECIFICATIONS AND DESCRIPTION
                                        


      
<PAGE>
 
 
                   Siemens Specification for 23GHz Radios

WARNING

The information contained in this document is the exclusive property of P-Com 
Inc. and should not be disclosed to any third party without the written consent 
of P-Com.


Table of Contents

<TABLE> 
<CAPTION> 
<S>                 <C>                                          <C> 
Section 1           General Specifications                       Page 2

Section 2           Digital Interface Specifications             Page 3

Section 3           Transmitter Specifications                   Page 4 

Section 4           Receiver Specifications                      Page 5 

Section 5           Miscellaneous Specifications                 Page 6

Section 6           Service Channel Specifications               Page 6

Section 7           Alarms Specifications                        Page 7

Section 8           Loopback Specifications                      Page 7

Section 9           Power Supply Specifications                  Page 7

Section 10          Environmental Specifications                 Page 8 

Section 11          Mechanical Specifications                    Page 8 

Section 12          Shock Specifications                         Page 8 

Section 13          Vibration Specifications                     Page 8

Section 14          IDU to ODU Interconnect Specifications       Page 9

Section 15          Antenna Specification                        Page 9

Section 16          Protection Configuration Specification       Page 9  

Section 17          EMC and Transient Specifications             Page 10

Section 18          Relaibility Specifications                   Page 10
</TABLE> 

Appendices
Appendix "A"        Input Jitter Tolerance Mark                  Page 11
Appendix "B"        Jitter Gain Mask                             Page 12
Appendix "C"        Transmit Spectrum                            Page 13-17
Appendix "D"        Channel Plans                                Page 18-23

The specifications listed in the following sections are the minimum or 
guaranteed specifications, over the environmental ranges specified, for the 
P-Com Tel-Link 23 E1 radio system provided to Siemens. As a minimum, the 
Tel-Link 23 E1 radio system compiles with prETS 300 198 November 1993. The 
specifications apply to both unprotected (1+0) and protected (1+1) systems 
except where otherwise specified.

Issue 1.1                          1

<PAGE>
 
                    Siemens Specification for 23GHz Radios

Section 1:  General:

Operating Frequency:              21.2 to 23.6 GHz                           
                                                                             
23A option; (Germany)                                                        
- ---------------------                                                        
                                                                             
ODU Bands Tx frequencies:         Low Band [22001 - 22589] MHz               
                                  High Band [23009 - 23597] MHz              
                                                                             
Frequency Agility:                [588] MHz                                  
                                                                             
Transmit/Receive Spacing          1008 MHz                                   
                                                                             
23B option; (U.K.)                                                           
- ------------------                                                           
                                                                             
ODU Bands Tx frequencies:         Low Band [21896 - 22344] MHz               
                                  High Band [23128 - 23578] MHz            
                                                                             
Frequency Agility:                [448] MHz                                  
                                                                             
Transmit/Receive Spacing          1232 MHz                                   
                                                                             
RF Channel Spacing:               1E1 & 2E1 = [3.5] MHz, 4E1 = [7] MHz       
                                                                             
Tuning Step Size:                                                            
     Minimum                      [1.75] MHz                                 
     1E1 & 2E1                    [1 to 168] channels per ODU band           
     4E1                          [1 to 84] channels per ODU band            
                                                                             
Modulation Type:                  [4 FSK IEI] systems will use [2FSK] due to   
                                  bandwidth)                                 
                                                                             
Flexibility:                      Any IDU (any capacity) to be used with any ODU
                                                                             
Connectors:                       Front Access IDU, [2U] High. Rear access
                                  option.
     DC Power                     2 position plug with screw terminals        
     Digital 1/0 (2.048 Mb/s)     120 ohm DB-25 Female or 75 ohm BNC.         
     IDU to ODU                   50 ohm "N" Female                           
     Alarms Port                  DB-25 Male                                  
     Computer                     DB-9 Female                                 
     EOW                          RJ-11, 4 pin                                
     EOW Bridge                   RJ-11, 8 pin                                
     Data Channels 1 & 2 (East)   DB-9 Female                                 
     Data Channels 1 & 2 (West)   DB-9 Male                                   


Issue 1.1                              2


<PAGE>
 
                    Siemens Specification for 23GHz Radios


Section 2:    Digital Interface:

Digital Capacity:                    Complies with CCITT G.703
                                     1 x 2.048 Mb/s
                                     2 x 2.048 Mb/s
                                     4 x 2.048 Mb/s
                                     Universal Bit Rate (1,2, or 4 x 2.048 Mb/s
                                     selectable by P.C. Software)

Digital I/O Tolerence                +/- 50ppm

Digital I/O Connectors:              120 Ohm Balanced - DB-25 Female
                                     or 75ohm Unbalanced-BNC

Digital Line Code:                   HDB3

Alarm Indication Signal:             AIS inserted with the following conditions;
                                     1. Loss of signal from the Multiplexer to
                                     radio will transmit AIS to the far and over
                                     the radio link. 2. Receiver failure or
                                     B.E.R. greater than 1 x10-4 less than 1x10-
                                     3 will send AIS to the receiver
                                     multiplexer. AIS is adjustable, OFF, 1x10-
                                     3, or 1x10-4

AIS Delay:
     Loss of input from multiplexer  25ms
     Receiver failure                4ms
     Defection of 1x10-3 B.E.R       100ms
     Defection of 1x10-4 B.E.R       500ms

Scrambling:                          Digital signals are scrambled to ensure the
                                     radiated RF spectrum does not contain
                                     discrete spectral components as a result of
                                     repetitive patterns in the input data
                                     stream or carrying internally generated
                                     AIS.

Input Jitter Tolerance:              per CCITT G.823/G921. See appendix "A" for
                                     mask. No errors when using a PRBS 215-1
                                     signal.

Output Jitter Tolerance:             When using a PRBS 215-1 signal:
                                     0.09 UI p-p 20 Hz to 100 KHz
                                     0.09 UI p-p 18 KHz to 100 KHz

Jitter Gain                          per CCITT G.823/G921. See appendix "B" for
                                     mask. No errors when using a PRBS 215-1 
                                     signal.


                                       3

<PAGE>
 
                    Siemens Specification for 23GHz Radios


Section 3:     Transmitter

Power Output:
     Standard Power                     +16 dBm minimum 40 mW) at antenna port
     High Power                         +21 dBm minimum 126 mW) at antenna port

Frequency Stability:
     Over Temperature:                  8 ppm
     Years 1 to 4                       1 ppm
     Years 5 to 10                      0.5 ppm
     10 year period total               15 ppm

Transmitter Mute:                       50 dB when loss of lock Modulator or 
                                        Synthesizer

Attenuation Range:                      0-30 dB via P.C. software

Intermediate Frequency:                 408.33 MHz

Composite Data Rate:
     1 x 2.048 Mb/s                     2.57 Mb/s
     2 x 2.048 Mb/s                     5.13 Mb/s
     4 x 2.048 Mb/s                     10.25 Mb/s

Occupied Bandwidth:
     1 x 2.048 Mb/s                     2.65 MHz (using * level FSK modulation)
     2 x 2.048 Mb/s                     2.65 MHz 
     4 x 2.048 Mb/s                     5.30 MHz

Spectrum Efficiency:
     1 x 2.048 Mb/s                     0.97 bit/sec/Hz (using * level FSK 
                                        modulation
     2 x 2.048 Mb/s                     1.94 bit/sec/Hz
     4 x 2.048 Mb/s                     1.94 bit/sec/Hz

TX Spurious Emissions:
     30 MHz to 21.2 GHz                 -90 dBW
     21.1 GHz to 55 GHz                 -60 dBW

TX Spectrum Mask:                       Refer to Appendix "C"


                                              *CONFIDENTIAL TREATMENT REQUESTED.

                                       4

<PAGE>
 
                    Siemens Specification for 23GHz Radios

Section 4:     Receiver:

Type:                                        Dual Conversion

Intermediate Frequencies:                    2667 MHz & 140 MHz

RX Noise Bandwidth:
     1 x 2.048 Mb/s                          3.08 MHz
     2 x 2.048 Mb/s                          3.08 MHz
     4 x 2.048 Mb/s                          6.15 MHz

Maximum RSL for 1x10-6 B.E.R                 -15 dBm

Maximum RSL for 1x10-3 B.E.R                 -13 dBm

Receiver Sensitivity, Dynamic Range, and System Gain specifications reflect 2 
FSK modulation for 1x2 Mb/s systems, while 2x2 Mb/s and 4x2 Mb/s specifications 
reflect 4 FSK modulation.

Sensitivity for 1x10-6 B.E.R.                with F.E.C.
     1 x 2.048 Mb/s                          -86 dBm
     2 x 2.048 Mb/s                          -80 dBm
     4 x 2.048 Mb/s                          -77 dBm        

Dynamic Range for 1x10-6 B.E.R.              with F.E.C.
     1 x 2.048 Mb/s                          71 dB 
     2 x 2.048 Mb/s                          65 dB 
     4 x 2.048 mb/s                          62 dB         

                                             Standard PowerHigh Power
System Gain for 1x10-6 B.E.R.                with F.E.C.    with F.E.C.
     1 x 2.048 Mb/s                          102 dB           107 dB 
     2 x 2.048 Mb/s                           96 dB           101 dB 
     4 x 2.048 Mb/s                           93 dB            98 dB 

Sensitivity for 1x10-3 B.E.R.                with F.E.C.
     1 x 2.048 Mb/s                          -87 dBm
     2 x 2.048 Mb/s                          -85 dBm
     4 x 2.048 Mb/s                          -82 dBm

Dynamic Range for 1x10-3 B.E.R.              with F.E.C.
     1 x 2.048 Mb/s                          74 dB
     2 x 2.048 Mb/s                          72 dB
     4 x 2.048 Mb/s                          69 dB

                                             Standard PowerHigh Power
System Gained for 1x10-3 B.E.R.              with F.E.C.    with F.E.C.
     1 x 2.048 Mb/s                          103 dB           108 dB
     2 x 2.048 Mb/s                          101 dB           106 dB
     4 x 2.048 Mb/s                           98 dB           103 dB
     
RX Spurious Emissions:
     30 MHz to 21.2 GHz                      -90 dBW
     21.2 GHz to 55 GHz                      -60 dBW

Unfaded B.E.R.                               1x10 - 10 

Issue 1.1                              5           

                                              
<PAGE>
 
                    Siemens Specification for 23GHz Radios


Section 5:     Miscellaneous:

Co-Channel Interference:                21 dB for one decade B.E.R. degradation
                                        referenced to 1x10-6 B.E.R thresholds. 
                                        This applies to all bit rates.

Adjacent Channel Interference:          For one decade B.E.R. degradation 
                                        referenced to 1x10-6 thresholds B.E.R., 
                                        using a modulated carrier similar to 
                                        the wanted RX signal.
     1 x 2.048 Mb/s                     0 dB with a 3.5 MHz separation
     2 x 2.048 Mb/s                     0 dB with a 3.5 MHz separation
     4 x 2.048 Mb/s                     0 dB with a 7 MHz separation

Forward Error Correction:               Standard Feature Reed-Solomon Type,
                                        corrects five bytes per frame.

Link ID's                               1-100. Eliminates the possibility of an
                                        unwanted transmitter locking up a wanted
                                        receiver in densely populated areas of 
                                        radios.

Section 8:     Service Channels:

Number of Service Channels:             Three
                                        One EOW (Engineering Orderwire) - 
                                        Optional One Data Channel
                                        One NMS Channel - equipped as a second 
                                        data channel

Service Channel #1                      EOW (Engineering Orderwire) - optional
     Type:                              Analog
     Impedance:                         600 ohms Balanced
     Coding Scheme:                     A-Law PCM
     Frequency Response:                300-3400 Hz
     Bridge Input Level:                -14dBm to +1 dBm adjustable through 
                                        keypad
     Bridge Output Level:               -11dBm to +4 dBm adjustable through 
                                        keypad
     Signalling:                        E&M type-E lead to ground. "Call" button
                                        on front panel of IDU.
     I/O Connector                      RJ-11, 4 pin modular
     Bridge:                            2 way, 4 wire balance bridge
     Bridge connector:                  RJ-45, 8 pin modular

Service Channel #2                      Digital Data Channel
     Type:                              Digital
     Mode:                              Asynchronous
     Interface:                         RS-233C, RS-422/RS-423
     Speed:                             0-9600 bit/s
     I/O Connector:                     DB-9

Service Channel #3                      NMS Channel or Digital Data Channel #2
     Type:                              Digital
     Mode:                              Asynchronous
     Interface:                         RS-232C, RS-422/RS-423
     Speed:                             0-9600 bit/s
     I/O Connector:                     DB-9

Issue 1.1                              8

<PAGE>
 
                     
                     Siemens Specification for 23GHz Radios

Section 7: Alarms:

Front Panel indicators:

     On-Line LED                             Green indicates power is applied to
                                             unit.
     IDU LED                                 Green indicates normal. Flashes or
                                             solid red in alarm.
     ODU LED                                 Green indicates normal. Flashes or
                                             solid red in alarm.
     CBL (Cable) LED                         Green indicates normal. Red when
                                             cable short or open.
     RMT (Remote) LED                        Green indicates normal. Flashes or
                                             solid yellow when far end terminal
                                             is not normal operation.

External Alarms:                             Up to eight external alarms can be
                                             used per IDU for site alarms such
                                             as Open door, Temperature, A/C
                                             Fail, ect.

Alarm Relays:                                Five form "C" relays. These alarm
                                             relays can be "mapped" using the
                                             optional P.C. software.

Transmit Mute:                               The alarms that will cause the
                                             transmitter to mute are:
                                             Modulator
                                             LO/Synthesizer

Time Delay for TX Mute:
     Alarm recognition to TX Mute:           less than 10 millseconds
     Alarm Clearing to TX Output Restoral:   2 seconds

Resuiting Power Reduction                    50 dB

Section 8:   Loopbacks:                      Three types of loopbacks are
                                             offered:

     IDU Loopback:                           Loops the aggregate date before the
                                             "N" connector of the IDU. Tests all
                                             circuits in the IDU for operation.
                                             An external BERT set is needed to
                                             test for error performance. Traffic
                                             affecting on all tributaries.

     ODU Loopback:                           Used only with the Loopback Test
                                             Transistor (LBT) to allow testing
                                             of an entire terminal. The LBT
                                             consists of a number and a 1008 or
                                             1232 MHz oscillator.

     Link Loopback:                          Loops the far end tributary at the
                                             line driver and returns the E1
                                             signal to the local end. Affects
                                             only the tributary selected. An
                                             external BERT set is needed to
                                             perform error rate tests.


Issue 1.1                          7


<PAGE>
 
                    Siemens Specification for 23GHz Radios

Section 9:     Power Supply:

Input Voltage:
     Standard:                          -48 VDC
     Range:                             -38.4 VDC to -62.4 VDC
     Optional:                          +24/-24V DC. (-20%, +30%)

Power Consumption:                           
     Standard Power                     50 watts includes service channel
                                        options installed
     High Power                         55 watts includes service channel 
                                        options installed

Section 10:    Environment:

Temperature Range - Operational:        
     Outdoor Unit                            -30 degrees C to +60 degrees C
     Indoor Unit                             -10 degrees C to +55 degrees C

Temperature Range - Storage:                 -40 degrees C to +70 degrees C for 
                                             both IDU and ODU

Relative Humidity:                           
     Outdoor Unit                            up to 100% for all weather
                                             operation
     Indoor Unit                             95% at +55 degrees C

Altitude:                                    4,500 meters (15,000 feet)

Section 11.    Mechanical:

Dimensions:
     Outdoor Unit                            250mm dia x 200 mm depth (10" dia x
                                             8" depth)
     Indoor Unit                             89 mm H, x 483 mm W. x 267 mm D 
                                             (3.5" H, X 19" W, x 10.5" D)
                                             44 mm H version different from
                                             89 mm H version
                                             Specification are listed in 
                                             attachment 61.

Weight:        
     Outdoor Unit                            4.5 kg (10lbs)
     Indoor Unit                             3.6 kg (8 lbs)

Section 12:    Shock:                   per ETS 300 019-1-3
     IDU:                                    5g Operational, 10g Survival
     ODU:                                    5g Operational, 10g Survival     

Section 13:    Vibration:                    per ETS 300 019-1-3
     IDU:                                    0.25g random, 5 Hz to 200 Hz 
                                             Operational
                                             0.25g random, 5 Hz to 200 Hz 
                                             Survival

     ODU                                     0.9g random, 5 Hz to 500 Hz 
                                             Operational
                                             2.4g random, 5 Hz to 500 Hz 
                                             Survival


Issue 1.1                          8
<PAGE>
 
                    Siemens Specification for 23GHz Radios

Section 14:     IDU to ODU Interconnection:

Number of Cables:                       One
Type:                                   RG-8/U - Belden 9913 or equivalent
Impedance:                              50 ohms unbalanced
Maximum Distance:                       300 meters
IDU Connector Type:                     "N" type Female
ODU Connector Type:                     "N" type Female    
Cable Length Criteria:        
     DC Resistance:                     4 ohms
     AC Resistance:                     27 DB at [408.33] MHz for 300 meter run
     Shielding                          100%
Signals on Interconnect Cable:          Frequency      Level
     TX IF                              [408.33] MHz   + 13 dBm +/-2 dB
     RX IF                              [140] MHz      -25 to -5 dBm
     Telemetry, TX                      [10] MHz        0 dBm nominal
     Telemetry, RX                      [18] MHz       -20 to 0 dBm
     Power                              DC             -48 VDC @ 1 amp max

Section 15: Antenna Specification.

Diameter:                               60 cm
Frequency Band:                         21.2-23.6 GHz
Gain, min                               39 dBi
Radiation Pattern:                      As per ETS 300 198 Figure 3
3dB beamwidth:                          1.5 degrees
Cross polarisation discrimination       As per ETS 300 198 Figure 3

Section 16: Protected Configuration (1+1) Specifications.

Number of tributaries:                  Up to four

Impedance:                              120 ohm balanced
                                        or 75 ohm unbalanced

PSS Indicators:                         "A" On Line, "B" On Line

PSS Manual Switch:                      "A" On Line, "B" On Line, Auto

Switching Type:                         Combined Tx and Rx.

RF Branching losses:               
     Dual antenna system                None

     Single antenna system:             
          Equal loss splitter.          Main [4.5] dB, Standby [4.5] dB
          Unequal loss splitter.        Main [2] dB, Standby [7.5] dB

Total switching time                    [0.5] sec
Muting level                            [50] dB hour operational
Mechanical dimension                    [1RU height]

Issue 1.1                              9

<PAGE>
 
                    Siemens Specification for 23GHz Radios

Section 17:    EMC and Transient Specifications.

Conducted Emissions:             150 kHz, 30 MHz, average peak                 
                                 CISPR-22                                      
                                                                               
Radiated Emissions:              30 MHz - 1 GHz, 3m and 10m ranges              
                                 EN55022                                       
                                 DIN VDE 0876                                  
                                                                               
Conducted Immunity:              IEC 801-2 ESD                                 
                                                                               
Radiated Immunity:               IEC 801-3                                     
                                                                               
Lightning Protection:            IEC 801-5 Class 2 & 4 with optional arrestors.

Section 18:    Reliability Specifications.

IDU MTBF:                        177,355 hours (20.25 years)  
                                                    
ODU MTBF:                        105,233 hours (12.0 years)   

Calculated using MIL-HDBK-217 Rev F

Issue 1.1                             

                                      10
<PAGE>
 
                    Siemens Specifications for 23GHz Radios

Input Jitter Tolerance Mask
Appendix "A"

                             [GRAPH APPEARS HERE]


            --------------------------------------------- 
            E1 Jitter Tolerance Mask                      
             CCITT G.823 (Above Curve = in Spec)          
                       Corner Points:                 
                   -------------------------------        
                   1Hz                  2.9IU              
                   20                   1.5               
                   2.4K                 1.5               
                   18K                   .2               
                   100K                  .2               
            ---------------------------------------------  

                            FREQUENCY (Hz) 

Issue 1.0                           10 bis







<PAGE>
 
                    Siemens Specification for 23GHz Radios

Appendix "B"
Jitter Gain Mask

                             [GRAPH APPEARS HERE]


                                  ----------------------------------------------
                                            E1 Jitter Transfer Mask 
                                     CCITT G.823/1.431 (Below Curve = in Spec)  
                                                Corner Points:               
                                            ---------------------
                                            1Hz               +0.5dB      
                                            40                +0.5         
                                            400               -19.5       
                                            15K               -19.5       
                                     ---------------------------------------

                                         
                             [GRAPH APPEARS HERE]

                                FREQUENCY (HZ)

Issue 1.0                             11


<PAGE>
 
                    Siemens Specifications for 23GHz Radios

Appendix "C"

Transmit Spectrum Mask

per BAPT 211 ZV 02/23 GHz

Issue 1.0

                                      12




<PAGE>
 
                   Spektrumsmaske A fur 3,5 MHz Kanalabstand


                             [GRAPH APPEARS HERE]

         Spektrale Leistungsdichte / (dB) bezogen auf den Maximalwert

                   -------------------------------------- 
                             0,0 MHz         0  dB        
                   --------------------------------------  
                      + or -1.25 MHz         0  dB        
                   --------------------------------------  
                     + or -2.125 MHz       -18  dB        
                   --------------------------------------  
                     + or -2.875 MHz       -18  dB        
                   --------------------------------------  
                       + or -4.0 MHz       -45  dB        
                   --------------------------------------  
                          +/-5.0 MHz       -45  dB        
                      ---------------------------------   

                             Ausgabe: August 1993

                                      13
<PAGE>
 
Spektrumsmaske B fur 3,5 MHz Kanalabstand


                             [GRAPH APPEARS HERE]


                       -----------------------------------
                                0.0 MHz         0 dB
                       ----------------------------------- 
                             +/-1.4 MHz         0 dB
                       -----------------------------------
                             +/-2.8 MHz       -23 dB
                       -----------------------------------  
                             +/-3.4 Mhz       -23 dB
                       -----------------------------------
                             +/-7.0 MHz       -45 dB
                       -----------------------------------
                            +/-10.0 MHz       -45 dB 
                       -----------------------------------

                             Ausgabe: August 1993

                                      14




<PAGE>
 
Spektrumsmaske A fur 7 MHz Kanalabstand


                             [GRAPH APPEARS HERE]


                       -----------------------------------
                               0.0 MHz         0 dB
                       -----------------------------------
                            +/-3.0 MHz         0 dB
                       -----------------------------------
                           +/-4.75 MHz       -18 dB
                       ----------------------------------- 
                           +/-6.25 Mhz       -18 dB
                       -----------------------------------  
                            +/-8.5 MHz       -45 dB
                       -----------------------------------
                           +/-10.0 MHz       -45 dB 
                       -----------------------------------

                             Ausgabe: August 1993

                                      15





<PAGE>
 
Speltrunsmaske B fur 7 MHz Kanalabstand

        [Spektrate Leistungsdichte / (dB) bezogen auf den Maximailwert]

                             [GRAPH APPEARS HERE]



                              0.0 MHz          0dB
                             +2.8 MHz          0dB
                             +5.6 MHz        -23dB
                             +6.8 Mhz        -23dB
                            +14.0 MHz        -45dB
                            +20.0 MHz        -45dB 

                             Augusabe: August 1993

                                      16



<PAGE>
 
                    Siemens Specification for 23GHz Radios

Appendix "D"

23 GHz Channel Plans

Issue 1.0                              17
<PAGE>
 
23B, Out Door Unit                      13566                           Rev.01
- --------------------------------------------------------------------------------


10.0  Frequency Plan

                                 3.5 MHz Plan

<TABLE> 
<CAPTION> 
                                           BAND 1
                                          RX Freq
           BAND 1     BAND 1    BAND I     BAND 2   BAND 2    BAND 2    BAND 2
CHAN         TX -       LO       LOx2     TX FREQ     LO       LOx2       RX
- --------------------------------------------------------------------------------
<S>       <C>       <C>        <C>       <C>       <C>       <C>       <C>
  1       21897.75  12786.375  25572.75  23129.75  9727.375  19454.75  21897.75
  2       21901.25  12788.125  25576.25  23133.25  9729.125  19458.25  21901.25
  3       21904.75  12789.875  25579.75  23136.75  9730.875  19461.75  21904.75
  4       21908.25  12791.625  25583.25  23140.25  9732.625  19465.25  21908.25
  5       21911.75  12793.375  25586.75  23143.75  9734.375  19468.75  21911.75
  6       21915.25  12795.125  25590.25  23147.25  9736.125  19472.25  21915.25
  7       21918.75  12796.875  25593.75  23150.75  9737.875  19475.75  21918.75
  8       21922.25  12798.625  25597.25  23154.25  9739.625  19479.25  21922.25
  9       21925.75  12800.375  25600.75  23157.75  9741.375  19482.75  21925.75
 10       21929.25  12802.125  25604.25  23161.25  9743.125  19486.25  21929.25
 11       21932.75  12803.875  25607.75  23164.75  9744.875  19489.75  21932.75
 12       21936.25  12805.625  25611.25  23168.25  9746.625  19493.25  21936.25
 13       21939.75  12807.375  25614.75  23171.75  9748.375  19496.75  21939.75
 14       21943.25  12809.125  25618.25  23175.25  9750.125  19500.25  21943.25
 15       21946.75  12810.875  25621.75  23178.75  9751.875  19503.75  21946.75
 16       21950.25  12812.625  25625.25  23182.25  9753.625  19507.25  21950.25
 17       21953.75  12814.375  25628.75  23185.75  9755.375  19510.75  21953.75
 18       21957.25  12816.125  25632.25  23189.25  9757.125  19514.25  21957.25
 19       21960.75  12817.875  25635.75  23192.75  9758.875  19517.75  21960.75
 20       21964.25  12819.625  25639.25  23196.25  9760.625  19521.25  21964.25
 21       21967.75  12821.375  25642.75  23199.75  9762.375  19524.75  21967.75
 22       21971.25  12823.125  25646.25  23203.25  9764.125  19528.25  21971.25
 23       21974.75  12824.875  25649.75  23206.75  9765.875  19531.75  21974.75
 24       21978.25  12826.625  25653.25  23210.25  9767.625  19535.25  21978.25
 25       21981.75  12828.375  25656.75  23213.75  9769.375  19538.75  21981.75
 26       21985.25  12830.125  25660.25  23217.25  9771.125  19542.25  21985.25
 27       21988.75  12831.875  25663.75  23220.75  9772.875  19545.75  21988.75
 28       21992.25  12833.625  25667.25  23224.25  9774.625  19549.25  21992.25
 29       21995.75  12835.375  25670.75  23227.75  9776.375  19552.75  21995.75
 30       21999.25  12837.125  25674.25  23231.25  9778.125  19556.25  21999.25
 31       22002.75  12838.875  25677.75  23234.75  9779.875  19559.75  22002.75
 32       22006.25  12840.625  25681.25  23238.25  9781.625  19563.25  22006.25
 33       22009.75  12842.375  25684.75  23241.75  9783.375  19566.75  22009.75
 34       22013.25  12844.125  25688.25  23245.25  9785.125  19570.25  22013.25
 35       22016.75  12845.875  25691.75  23248.75  9786.875  19573.75  22016.75
 36       22020.25  12847.625  25695.25  23252.25  9788.625  19577.25  22020.25
 37       22023.75  12849.375  25698.75  23255.75  9790.375  19580.75  22023.75
 38       22027.25  12851.125  25702.25  23259.25  9792.125  19584.25  22027.25
 39       22030.75  12852.875  25705.75  23262.75  9793.875  19587.75  22030.75
 40       22034.25  12854.625  25709.25  23266.25  9795.625  19591.25  22034.25
 41       22037.75  12856.375  25712.75  23269.75  9797.375  19594.75  22037.75
 42       22041.25  12858.125  25716.25  23273.25  9799.125  19598.25  22041.25
</TABLE>

- --------------------------------------------------------------------------------
P-Com, Inc.                      Confidential                     Page 25 of 29
<PAGE>
 
23B, Out Door Unit                      13566                           Rev.01
- --------------------------------------------------------------------------------

<TABLE> 
<S>       <C>       <C>        <C>       <C>       <C>       <C>       <C>
 43       22044.75  12859.875  25719.75  23276.75  9800.875  19601.75  22044.75
 44       22048.25  12861.625  25723.25  23280.25  9802.625  19605.25  22048.25
 45       22051.75  12863.375  25726.75  23283.75  9804.375  19608.75  22051.75
 46       22055.25  12865.125  25730.25  23287.25  9806.125  19612.25  22055.25
 47       22058.75  12866.875  25733.75  23290.75  9807.875  19615.75  22058.75
 48       22062.25  12868.625  25737.25  23294.25  9809.625  19619.25  22062.25
 49       22065.75  12870.375  25740.75  23297.75  9811.375  19622.75  22065.75
 50       22069.25  12872.125  25744.25  23301.25  9813.125  19626.25  22069.25
 51       22072.75  12873.875  25747.75  23304.75  9814.875  19629.75  22072.75
 52       22076.25  12875.625  25751.25  23308.25  9816.625  19633.25  22076.25
 53       22079.75  12877.375  25754.75  23311.75  9818.375  19636.75  22079.75
 54       22083.25  12879.125  25758.25  23315.25  9820.125  19640.25  22083.25
 55       22086.75  12880.875  25761.75  23318.75  9821.875  19643.75  22086.75
 56       22090.25  12882.625  25765.25  23322.25  9823.625  19647.25  22090.25
 57       22093.75  12884.375  25768.75  23325.75  9825.375  19650.75  22093.75
 58       22097.25  12886.125  25772.25  23329.25  9827.125  19654.25  22097.25
 59       22100.75  12887.875  25775.75  23332.75  9828.875  19657.75  22100.75
 60       22104.25  12889.625  25779.25  23336.25  9830.625  19661.25  22104.25
 61       22107.75  12891.375  25782.75  23339.75  9832.375  19664.75  22107.75
 62       22111.25  12893.125  25786.25  23343.25  9834.125  19668.25  22111.25
 63       22114.75  12894.875  25789.75  23346.75  9835.875  19671.75  22114.75
 64       22118.25  12896.625  25793.25  23350.25  9837.625  19675.25  22118.25
 65       22121.75  12898.375  25796.75  23353.75  9839.375  19678.75  22121.75
 66       22125.25  12900.125  25800.25  23357.25  9841.125  19682.25  22125.25
 67       22128.75  12901.875  25803.75  23360.75  9842.875  19685.75  22128.75
 68       22132.25  12903.625  25807.25  23364.25  9844.625  19689.25  22132.25
 69       22135.75  12905.375  25810.75  23367.75  9846.375  19692.75  22135.75
 70       22139.25  12907.125  25814.25  23371.25  9848.125  19696.25  22139.25
 71       22142.75  12908.875  25817.75  23374.75  9849.875  19699.75  22142.75
 72       22146.25  12910.625  25821.25  23378.25  9851.625  19703.25  22146.25
 73       22149.75  12912.375  25824.75  23381.75  9853.375  19706.75  22149.75
 74       22153.25  12914.125  25828.25  23385.25  9855.125  19710.25  22153.25
 75       22156.75  12915.875  25831.75  23388.75  9856.875  19713.75  22156.75
 76       22160.25  12917.625  25835.25  23392.25  9858.625  19717.25  22160.25
 77       22163.75  12919.375  25838.75  23395.75  9860.375  19720.75  22163.75
 78       22167.25  12921.125  25842.25  23399.25  9862.125  19724.25  22167.25
 79       22170.75  12922.875  25845.75  23402.75  9863.875  19727.75  22170.75
 80       22174.25  12924.625  25849.25  23406.25  9865.625  19731.25  22174.25
 81       22177.75  12926.375  25852.75  23409.75  9867.375  19734.75  22177.75
 82       22181.25  12928.125  25856.25  23413.25  9869.125  19738.25  22181.25
 83       22184.75  12929.875  25859.75  23416.75  9870.875  19741.75  22184.75
 84       22188.25  12931.625  25863.25  23420.25  9872.625  19745.25  22188.25
 85       22191.75  12933.375  25866.75  23423.75  9874.375  19748.75  22191.75
 86       22195.25  12935.125  25870.25  23427.25  9876.125  19752.25  22195.25
 87       22198.75  12936.875  25873.75  23430.75  9877.875  19755.75  22198.75
 88       22202.25  12938.625  25877.25  23434.25  9879.625  19759.25  22202.25
 89       22205.75  12940.375  25880.75  23437.75  9881.375  19762.75  22205.75
 90       22209.25  12942.125  25884.25  23441.25  9883.125  19766.25  22209.25
 91       22212.75  12943.875  25887.75  23444.75  9884.875  19769.75  22212.75
 92       22216.25  12945.625  25891.25  23448.25  9886.625  19773.25  22216.25
</TABLE>

- --------------------------------------------------------------------------------
P-Com, Inc.                      Confidential                     Page 26 of 29
<PAGE>
 
23B, Out Door Unit                      13566                           Rev.01
- --------------------------------------------------------------------------------

<TABLE> 
<S>       <C>       <C>        <C>       <C>       <C>       <C>       <C>
 93       22219.75  12947.375  25894.75  23451.75  9888.375  19776.75  22219.75
 94       22223.25  12949.125  25898.25  23455.25  9890.125  19780.25  22223.25
 95       22226.75  12950.875  25901.75  23458.75  9891.875  19783.75  22226.75
 96       22230.25  12952.625  25905.25  23462.25  9893.625  19787.25  22230.25
 97       22233.75  12954.375  25908.75  23465.75  9895.375  19790.75  22233.75
 98       22237.25  12956.125  25912.25  23469.25  9897.125  19794.25  22237.25
 99       22240.75  12957.875  25915.75  23472.75  9898.875  19797.75  22240.75
100       22244.25  12959.625  25919.25  23476.25  9900.625  19801.25  22244.25
101       22247.75  12961.375  25922.75  23479.75  9902.375  19804.75  22247.75
102       22251.25  12963.125  25926.25  23483.25  9904.125  19808.25  22251.25
103       22254.75  12964.875  25929.75  23486.75  9905.875  19811.75  22254.75
104       22258.25  12966.625  25933.25  23490.25  9907.625  19815.25  22258.25
105       22261.75  12968.375  25936.75  23493.75  9909.375  19818.75  22261.75
106       22265.25  12970.125  25940.25  23497.25  9911.125  19822.25  22265.25
107       22268.75  12971.875  25943.75  23500.75  9912.875  19825.75  22268.75
108       22272.25  12973.625  25947.25  23504.25  9914.625  19829.25  22272.25
109       22275.75  12975.375  25950.75  23507.75  9916.375  19832.75  22275.75
110       22279.25  12977.125  25954.25  23511.25  9918.125  19836.25  22279.25
111       22282.75  12978.875  25957.75  23514.75  9919.875  19839.75  22282.75
112       22286.25  12980.625  25961.25  23518.25  9921.625  19843.25  22286.25
113       22289.75  12982.375  25964.75  23521.75  9923.375  19846.75  22289.75
114       22293.25  12984.125  25968.25  23525.25  9925.125  19850.25  22293.25
115       22296.75  12985.875  25971.75  23528.75  9926.875  19853.75  22296.75
116       22300.25  12987.625  25975.25  23532.25  9928.625  19857.25  22300.25
117       22303.75  12989.375  25978.75  23535.75  9930.375  19860.75  22303.75
118       22307.25  12991.125  25982.25  23539.25  9932.125  19864.25  22307.25
119       22310.75  12992.875  25985.75  23542.75  9933.875  19867.75  22310.75
120       22314.25  12994.625  25989.25  23546.25  9935.625  19871.25  22314.25
121       22317.75  12996.375  25992.75  23549.75  9937.375  19874.75  22317.75
122       22321.25  12998.125  25996.25  23553.25  9939.125  19878.25  22321.25
123       22324.75  12999.875  25999.75  23556.75  9940.875  19881.75  22324.75
124       22328.25  13001.625  26003.25  23560.25  9942.625  19885.25  22328.25
125       22331.75  13003.375  26006.75  23563.75  9944.375  19888.75  22331.75
126       22335.25  13005.125  26010.25  23567.25  9946.125  19892.25  22335.25
127       22338.75  13006.875  26013.75  23570.75  9947.875  19895.75  22338.75
128       22342.25  13008.625  26017.25  23574.25  9949.625  19899.25  22342.25
</TABLE> 

- --------------------------------------------------------------------------------
P-Com, Inc.                      Confidential                     Page 27 of 29
<PAGE>
 
<TABLE> 
<CAPTION> 
- --------------------------------------------------------------------------------
BAND 1             7MHz Plan
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
Chan.       Tx         LO       LOx2     Rx Freq      LO       LOx2    Rx Freq
- --------------------------------------------------------------------------------
<S>      <C>        <C>       <C>       <C>        <C>       <C>       <C>  
 1       21899.50   12787.25  25574.50  23131.50   9728.25   19456.50  21899.50    
 2       21906.50   12790.75  25581.50  23138.50   9731.75   19463.50  21906.50    
 3       21913.50   12794.25  25588.50  23145.50   9735.25   19470.50  21913.50    
 4       21920.50   12797.75  25595.50  23152.50   9738.75   19477.50  21920.50    
 5       21927.50   12801.25  25602.50  23159.50   9742.25   19484.50  21927.50    
 6       21934.50   12804.75  25609.50  23166.50   9745.75   19491.50  21934.50    
 7       21941.50   12808.25  25616.50  23173.50   9749.25   19498.50  21941.50    
 8       21948.50   12811.75  25623.50  23180.50   9752.75   19505.50  21948.50    
 9       21955.50   12815.25  25630.50  23187.50   9756.25   19512.50  21955.50      
 10      21962.50   12818.75  25637.50  23194.50   9759.75   19519.50  21962.50    
 11      21969.50   12822.25  25644.50  23201.50   9763.25   19526.50  21969.50    
 12      21976.50   12825.75  25651.50  23208.50   9766.75   19533.50  21976.50    
 13      21983.50   12829.25  25658.50  23215.50   9770.25   19540.50  21983.50    
 14      21990.50   12832.75  25665.50  23222.50   9773.75   19547.50  21990.50    
 15      21997.50   12836.25  25672.50  23229.50   9777.25   19554.50  21997.50    
 16      22004.50   12839.75  25679.50  23236.50   9780.75   19561.50  22004.50    
 17      22011.50   12843.25  25686.50  23243.50   9784.25   19568.50  22011.50    
 18      22018.50   12846.75  25693.50  23250.50   9787.75   19575.50  22018.50    
 19      22025.50   12850.25  25700.50  23257.50   9791.25   19582.50  22025.50    
 20      22032.50   12853.75  25707.50  23264.50   9794.75   19589.50  22032.50    
 21      22039.50   12857.25  25714.50  23271.50   9798.25   19596.50  22039.50    
 22      22046.50   12860.75  25721.50  23278.50   9801.75   19603.50  22046.50    
 23      22053.50   12864.25  25728.50  23285.50   9805.25   19610.50  22053.50    
 24      22060.50   12867.75  25735.50  23292.50   9808.75   19617.50  22060.50    
 25      22067.50   12871.25  25742.50  23299.50   9812.25   19624.50  22067.50    
 26      22074.50   12874.75  25749.50  23306.50   9815.75   19631.50  22074.50    
 27      22081.50   12878.25  25756.50  23313.50   9819.25   19638.50  22081.50    
 28      22088.50   12881.75  25763.50  23320.50   9822.75   19645.50  22088.50    
 29      22095.50   12885.25  25770.50  23327.50   9826.25   19652.50  22095.50    
 30      22102.50   12888.75  25777.50  23334.50   9829.75   19659.50  22102.50    
 31      22109.50   12892.25  25784.50  23341.50   9833.25   19666.50  22109.50    
 32      22116.50   12895.75  25791.50  23348.50   9836.75   19673.50  22116.50    
 33      22123.50   12899.25  25798.50  23355.50   9840.25   19680.50  22123.50    
 34      22130.50   12902.75  25805.50  23362.50   9843.75   19687.50  22130.50    
 35      22137.50   12906.25  25812.50  23369.50   9847.25   19694.50  22137.50    
 36      22144.50   12909.75  25819.50  23376.50   9850.75   19701.50  22144.50    
 37      22151.50   12913.25  25826.50  23383.50   9854.25   19708.50  22151.50    
 38      22158.50   12916.75  25833.50  23390.50   9857.75   19715.50  22158.50    
 39      22165.50   12920.25  25840.50  23397.50   9861.25   19722.50  22165.50    
 40      22172.50   12923.75  25847.50  23404.50   9864.75   19729.50  22172.50    
 41      22179.50   12927.25  25854.50  23411.50   9868.25   19736.50  22179.50    
 42      22186.50   12930.75  25861.50  23418.50   9871.75   19743.50  22186.50    
 43      22193.50   12934.25  25868.50  23425.50   9875.25   19750.50  22193.50    
 44      22200.50   12937.75  25875.50  23432.50   9878.75   19757.50  22200.50    
 45      22207.50   12941.25  25882.50  23439.50   9882.25   19764.50  22207.50    
 46      22214.50   12944.75  25889.50  23446.50   9885.75   19771.50  22214.50    
 47      22221.50   12948.25  25896.50  23453.50   9889.25   19778.50  22221.50    
 48      22228.50   12951.75  25903.50  23460.50   9892.75   19785.50  22228.50    
 49      22235.50   12955.25  25910.50  23467.50   9896.25   19792.50  22235.50     
</TABLE> 
<PAGE>
 
<TABLE> 
<S>     <C>        <C>        <C>       <C>       <C>       <C>       <C> 
- --------------------------------------------------------------------------------
  50    22242.50   12958.75   25917.50  23474.50  9899.75   19799.50  22242.50
- --------------------------------------------------------------------------------
  51    22249.50   12962.25   25924.50  23481.50  9903.25   19806.50  22249.50
- --------------------------------------------------------------------------------
  52    22256.50   12965.75   25931.50  23488.50  9906.75   19813.50  22256.50
- --------------------------------------------------------------------------------
  53    22263.50   12969.25   25938.50  23495.50  9910.25   19820.50  22263.50
- --------------------------------------------------------------------------------
  54    22270.50   12972.75   25945.50  23502.50  9913.75   19827.50  22270.50 
- --------------------------------------------------------------------------------
  55    22277.50   12976.25   25952.50  23509.50  9917.25   19834.50  22277.50 
- --------------------------------------------------------------------------------
  56    22284.50   12979.75   25959.50  23516.50  9920.75   19841.50  22284.50 
- --------------------------------------------------------------------------------
  57    22291.50   12983.25   25966.50  23523.50  9924.25   19848.50  22291.50 
- --------------------------------------------------------------------------------
  58    22298.50   12986.75   25973.50  23530.50  9927.75   19855.50  22298.50
- --------------------------------------------------------------------------------
  59    22305.50   12990.25   25980.50  23537.50  9931.25   19862.50  22305.50
- --------------------------------------------------------------------------------
  60    22312.50   12993.75   25987.50  23544.50  9934.75   19869.50  22312.50
- --------------------------------------------------------------------------------
  61    22319.50   12997.25   25994.50  23551.50  9938.25   19876.50  22319.50 
- --------------------------------------------------------------------------------
  62    22326.50   13000.75   26001.50  23558.50  9941.75   19883.50  22326.50 
- --------------------------------------------------------------------------------
  63    22333.50   13004.25   26008.50  23565.50  9945.25   19890.50  22333.50  
- --------------------------------------------------------------------------------
  64    22340.50   13007.75   26015.50  23572.50  9948.75   19897.50  22340.50
- --------------------------------------------------------------------------------
</TABLE> 

                                      22

         
         
<PAGE>
 
                    Siemens Specification for 38 GHz Radios

WARNING

The information contained in this document is the exclusive property of P-Com 
Inc. and should not be disclosed to any third party without the written consent 
of P-Com.


Table of Contents

<TABLE> 
<CAPTION> 
<S>                 <C>                                          <C> 
Section 1           General Specifications                       Page 2

Section 2           Digital Interface Specifications             Page 3

Section 3           Transmitter Specifications                   Page 4 

Section 4           Receiver Specifications                      Page 5 

Section 5           Miscellaneous Specifications                 Page 6

Section 6           Service Channel Specifications               Page 6

Section 7           Alarms Specifications                        Page 7

Section 8           Loopback Specifications                      Page 7

Section 9           Power Supply Specifications                  Page 7

Section 10          Environmental Specifications                 Page 8 

Section 11          Mechanical Specifications                    Page 8 

Section 12          Shock Specifications                         Page 8 

Section 13          Vibration Specifications                     Page 8

Section 14          IDU to ODU Interconnect Specifications       Page 9

Section 15          Antenna Specification                        Page 9

Section 16          Protection Configuration Specification       Page 9  

Section 17          EMC and Transient Specifications             Page 10

Section 18          Relaibility Specifications                   Page 10
</TABLE> 

Appendices
Appendix "A"        Input Jitter Tolerance Mark                  Page 11   
Appendix "B"        Jitter Gain Mask                             Page 12   
Appendix "C"        Transmit Spectrum                            Page 13   
Appendix "D"        Channel Plans                                Page 14-20 

The specifications listed in the following sections are the minimum or 
guaranteed specifications, over the environmental ranges specified, for the 
P-Com Tel-Link 38 E1 radio system provided to Siemens. As a minimum, the 
Tel-Link 38 E1 radio system compiles with prETS 300 197 November 1993. The 
specifications apply to both unprotected (1+0) and protected (1+1) systems 
except where otherwise specified.

Issue 1.1                          1
<PAGE>
 
                    SIEMENS SPECIFICATION FOR 38 GHZ RADIOS
     
     Section 1:     General:

     Operating Frequency:                 37.0 GHz to 39.5 GHz

            ODU Bands TX:                 Band 1 [37058 - 37618] MHz
                                          Band 2 [37618 - 38178] MHz          
                                          Band 3 [38318 - 38878] MHz          
                                          Band 4 [38878 - 39438] MHz          
                                                                              
            ODU Bands RX:                 Band 1 [38318 - 38878] MHz          
                                          Band 2 [38878 - 39438] MHz          
                                          Band 3 [37058 - 37618] MHz          
                                          Band 4 [37618 - 38178] MHz          
                                                                              
     Transmit/Receive Spacing             1260 MHz   

     RF Channel Spacing:                  1E1 & 2E1 = [3.5] MHz, 4E1 = [7] MHz
                                                                             
     Frequency Agility:                   560 MHz                            
                                                                             
     Turning Step Size:                                                      
             Minimum                      [1.75] MHz                         
             1E1 & 2E1                    [1] to [160] channels per ODU band 
             4E1                          [1] to [90] channels per ODU band 
                                                          
     Modulation Type:                     [4 FSK(IEI] systems will use [2 FSK] 
                                          due to bandwidth)

     Flexibility:                         Any IDU (any capacity to be used with
                                          any ODU                            

     Connectors:                          Front Access IDU, [2 U] high. Rear 
                                          access option                      
             DC Power                     2 position plug with screw terminals
             Digital 1/O (2.048 mb/s)     120 ohm DB-25 Female or 75 ohm BNC. 
             IDU to ODU                   50 ohm "N" Female                
             Alarms Port                  DB-25 Male                    
             Computer                     DB-9 Female             
             EOW                          RJ-11.4 pin             
             EOW Bridge                   RJ-11.5 pin             
             Data Channels 1 & 2 (East)   DB-9 Female             
             Data Channels 1 & 2 (West)   DB-9 Male               


     Issue 1.1.                   2     

<PAGE>
 
                    Siemens Specification for 38 GHz Radios

Section 2:     Digital Interface:

Digital Capacity:                    Complies with CCITT G.703
                                     1 x 2.048 Mb/s
                                     2 x 2.048 Mb/s
                                     4 x 2.048 Mb/s
                                     Universal Bit Rate (1, 2, or 4 x 2.048 Mb/s
                                     selectable by P.C. software)

Digital I/O Tolerance                +/- 50 ppm

Digital I/O Connectors:              120 Ohm Balanced - DB-25 Female
                                     or 75 ohm Unbalance-BNC

Digital Line Code:                   HDB3
     
Alarm Indication Signal:           AIS will be inserted with the following
                                   conditions:
                                     1. Loss of signal from the Multiplexer to
                                     radio will transmit AIS to the far and over
                                     the radio link.
                                     2. Receiver failure or B.E.R. greater than
                                     1x10-4 and less than 1x10-3 will send AIS 
                                     to the receive multiplexer.
                                     AIS is adjustable, OFF, 1x10-3, or 1x10-4

AIS Delay:
   Loss of Input from multiplexer    (25) ms
   Receiver failure                  (4) ms
   Detection of 1x10-3 B.E.R.        (100) ms
   Detection of 1x10-4 B.E.R.        (500) ms

Scrambling:                          Digital signals are scrambled to ensure the
                                     radiated RF spectrum does not contain 
                                     discrets spectral components as a result of
                                     repetitive patterns in the Input data 
                                     stream or carrying internally generated 
                                     AIS.

Input Jitter Tolerance:              per CCITT G.823/G921. See appendix "A" for
                                     mask. No errors when using a PRBS 215-1
                                     signal.

Output Jitter Tolerance:             When using a PRBS 215-1 signal:
                                     (0.09) UI p-p, (20) Hz to (100) KHz
                                     (0.09) UI p-p, (18) Kz to (100) KHz

Jitter Gain                          per CCITT G.823/G921. See appendix "B" for
                                     mask. No errors when using a PRBS 215-1
                                     signal.

Issue 1.1                              

                                       3
<PAGE>
 
                    Siemens Specification for 38 GHz Radios

Section 3:     Transmitter.

Power Output:                     (+15) dBm minimum (31.6 mW) at antenna port

Frequency Stability:
     Over Temperature:            (8) ppm
     Years 1 to 4                 (1) ppm
     Years 5 to 10                (0.5) ppm
     10 year period total         (15) ppm

Transmitter Mute:                 (50) dB when loss of lock of Modulator or
                                  Synthesizer

Attenuation Range:                (0) - (50) dB
                                  (0) - (25) db Electrical (IDU, NMS access)
                                  (0) - (25) db Mechanical (in ODU)

Immediate Frequency:              (408.33) MHz

Composite Data Rate:
     1 x 2.048 Mb/s                (2.57) Mb/s
     2 x 2.048 Mb/s                (5.13) Mb/s
     4 x 2.048 Mb/s                (10.25) Mb/s

Occupied Bandwidth:
     1 x 2.048 Mb/s                (2.65) MHz (using level FSK modulation)
     2 x 2.048 Mb/s                (2.65) MHz
     4 x 2.048 Mb/s                (5.30) MHz 

Spectrum Efficiency:
     1 x 2.048 Mb/s                (0.97) bit/sec/Hz
                                          (using level FSK modulation)
     2 x 2.048 Mb/s                (1.94) bit/sec/Hz 
     4 x 2.048 Mb/s                (1.94) bit/sec/Hz 

TX Spurious Emissions:
     30 MHZ to 21.2 GHz            (-90) dBW
     21.2 GHz to 66 GHz            (-60) dBW
     66 GHz to 80 GHz              (-60) dBW

TX Spectrum Mask:                 Refer to Appendix "C"

Issue 1.1                              4

<PAGE>
 
                    Siemens Specification for 38 GHz Radios

Section 4:     Receiver:

Type:                              Dual Conversion

Intermediate Frequencies"          2415MHz & 140MHz

Noise Figure:                      13dB

- -RX Noise Bandwidth:
     1 x 2.048 Mb/s                3.08MHz
     2 x 2.048 Mb/s                3.08MHz
     4 x 2.048 Mb/s                6.15MHz

Maximum RSL for 1x10-6 B.E.R.      -15 dBm

Maximum RSL for 1x10-3 B.E.R.      -13 dBm

Receiver Sensitivity, Dynamic Range, and System Gain specifications reflect 2 
FSK modulation for 1 x 2 Mb/s systems, while 2 x 2 Mb/s and 4 x 2 Mb/s 
specifications reflect 4 FSK modulation.

Sensitivity for 1x10-6 B.E.R.      with F.E.C.
     1 x 2.048 Mb/s                -81dBm
     2 x 2.048 Mb/s                -78dBm
     4 x 2.048 Mb/s                -75dBm
     
Dynamic Range for 1x10-6 B.E.R.    with F.E.C.
     1 x 2.048 Mb/s                66dB
     2 x 2.048 Mb/s                63dB
     4 x 2.048 Mb/s                60dB
     
System Gain for 1x10-6 B.E.R.      with F.E.C.
     1 x 2.048 Mb/s                96dB
     2 x 2.048 Mb/s                93dB
     4 x 2.048 Mb/s                90dB

Sensitivity for 1x10-3 B.E.R.      with F.E.C.
     1 x 2.048 Mb/s                -83dBm
     2 x 2.048 Mb/s                -80dBm
     4 x 2.048 Mb/s                -77dBm

Dynamic Range for 1x10-3 B.E.R.    with F.E.C.
     1 x 2.048 Mb/s                70dB
     2 x 2.048 Mb/s                67dB
     4 x 2.048 Mb/s                64dB

System Gain for 1x10-3 B.E.R.      with F.E.C.
     1 x 2.048 Mb/s                98dB
     2 x 2.048 Mb/s                95dB
     4 x 2.048 Mb/s                92dB

RX Spurious Emissions:
       30 MHz to 21.2 GHz          -90dBW
     21.2 GHz to 66 GHz            -60dBW    
       66 GHz to 80 GHz            -60dBW

Unfaded B.E.R.                     1x10 - 10 

Issue 1.1.                             5

<PAGE>
 
                    Siemens Specification for 38 GHz Radios

Section 5:     Miscellaneous:

Co-Channel Interference:           21dB for one decade B.E.R. degradation
                                   referenced to 1x10-6 B.E.R. threshold. This
                                   applies to all bit rates.

Adjacent Channel Interference:     For one decade B.E.R. degradation referenced
                                   to 1x10-6 B.E.R. threshold, using a
                                   modulated carrier similar to the wanted RX
                                   signal.

     1 x 2.048 Mb/s                0dB with a 3.5 MHz separation
     2 x 2.048 Mb/s                0dB with a 3.5 MHz separation
     4 x 2.048 Mb/s                0dB with a 7 MHz separation

Forward Error Correction:          Standard Feature, Reed-Solomon Type, 
                                   corrects five bytes per frame.

Link ID's                          1 - 100. Eliminates the possibility of an
                                   unwanted transmitter locking up a wanted
                                   receiver in densely populated areas of
                                   radios.

Section 6:  Service Channels:

Number of Service Channels:        Three      
                                   One EOW (Engineering Orderwire) - Optional
                                   One Data Channel
                                   One NMS Channel - equipped as a second data
                                   channel

Service Channel #1                 EOW (Engineering Orderwire) - Optional
     Type:                         Analog
     Impedance:                    600 ohms Balanced
     Coding Scheme:                A-Law PCM
     Frequency Response:           300-3400 Hz
     Bridge Input Level:           -14dBm to +1 dBm adjustable through keypad
     Bridge Output Level:          -11dBm to +4 dBm adjustable through keypad
     Signalling:                   E&M type-E head to ground. "Call" button on 
                                   front panel of IDU.
     I/O Connector                 RJ-11, 4 pin modular
     Bridge:                       2 way- 4 wire balance bridge
     Bridge connector:             RJ-45, 8 pin modular

Service Channel #2                 Digital Data Channel
     Type:                         Digital
     Mode:                         Asynchronous
     Interface:                    RS-232C, RS-422/RS-423
     Speed:                        0-9600 bit/s
     I/O Connector                 DB-9

Service Channel #3                 NMS Channel or Digital Data Channel #2
     Type:                         Digital
     Mode:                         Asynchronous
     Interface:                    R8-232C, RS-422/RS-423
     Speed:                        0-9600 bit/s
     I/O Connector                 DB-9


*    7MHz separation guaranteed 
     35MHz separation to be tested before confirmation

Issue 1.1.                             6

<PAGE>
 
                    Siemens Specification for 38 GHz Radios


Section 7:     Alarms:

Front Panel Indicators:
     
   On-Line LED                            Green indicates power is applied to
                                          unit.
   IDU LED                                Green indicates normal. Flashes or
                                          solid red in alarm.
   ODU LED                                Green indicates normal. Flashes or
                                          solid red in alarm.
   CBL (Cable) LED                        Green indicates normal. Red when cable
                                          short or open.
   RMT (Remote) LED                       Green indicates normal. Flashes or
                                          solid yellow when far end terminal is
                                          not in normal operation.

External Alarms:                          Up to eight external alarms can be
                                          used per IDU for site alarms such as
                                          Open door, Temperature, A/C Fail, etc.

Alarm Relays:                             Five form "C" relays. These alarm
                                          relays can be "mapped" using the
                                          optional P.C. software.

Transmit Mute:                            The alarms that will cause the 
                                          transmitter to mute are:
                                          Modulator
                                          LO/Synthesizer

Time Delay for TX Mute:
   Alarm recognition to Tx Mute:          less than 10 milliseconds
   Alarm Clearing to Tx Output Restoral:  2 seconds

Resulting Power Reduction:                50 dB


Section 8:     Loopbacks:                 Three types of loopbacks are offered:

   IDU Loopback:                          Loops the aggregate date before the 
                                          "N" connector of the IDU. Tests all 
                                          circuits in the IDU for operation. An 
                                          external BERT set is needed to test 
                                          for error performance. Traffic 
                                          effecting on all tributaries.

   ODU Loopback:                   Used only with the Loopback Test Translator 
                                   (LBT) to allow testing of an entire 
                                   terminal. The LBT consists of a mixer and a 
                                   1280 MHz oscillator.

   Link Loopback:                  Loops the far end tributary at the line 
                                   driver and returns the E1 signal to the 
                                   local end. Affects only the tributary 
                                   selected. An external BERT set is needed to 
                                   perform error rate tests.

Issue 1.1.                             7  


<PAGE>
 
                    Siemens Specification for 38 GHz Radios


Section 9:     Power Supply:

Input Voltage:
     Standard:                          -48 VDC
     Range:                             -38.4 VDC to -62.4 VDC
     Optional:                          +24/-24 VDC. (-20%, +30%)

Power Consumption:                      50 watts includes service channel
                                         options installed

Section 10:    Environmental:

Temperature Range-Operational
     Outdoor Unit                           -30 degrees C to +60 degrees C
     Indoor Unit                            -10 degrees C to +55 degrees C

Temperature Range-Storage:                  -40 degrees C to +70 degrees C for
                                            both IDU and ODU
Relative Humidity:                      
     Outdoor Unit:                          up to 100% for all weather operation
     Indoor Unit                            95% at +55 degrees C

Attitude:                                   4,500 meters (15,000 feet)


Section 11:    Mechanical:
                 
Dimensions:    
     Outdoor Unit                           250 mm dia x 200 mm depth (10" dia
                                            x 8" depth)
     Indoor Unit                            89 mm H, x 483 mm W, x 267 mm D
                                            (3.5" H, x 19" W x 10.5" D)
                                            44 mm H version different from
                                            89 mm H version  
Specification Listed on Attachment
Weight:                                     
     Outdoor Unit                           4.5 kg (10 lbs)
     Indoor Unit                            3.5 kg (8 lbs)

Section 12:    Shock:                   per ETS 300 019-1-3
     IDU:                                   5g Operational, 10g Survival
     ODU:                                   5g Operational, 10g Survival

Section 13:    Vibration:                   per ETS 300 019-1-3
     IDU:                                   0.25g random, 5Hz to 200 Hz
                                            Operational
                                            0.5g random, 5Hz to 200 Hz Survival

     ODU                                    O.9g ramdon, 5Hz to 500 Hz
                                            Operational
                                            2.4g random, 5Hz to 500 Hz Survival
Issue 1.1.           
 
                                    8      

<PAGE>
 
                    Siemens Specification for 38 GHz Radios

Section 14:    IDU to ODU Interconnection:

Number of Cables:                       One 
Type:                                   RG-8/U - Belden 9913 or equivalent
Impedance:                              50 ohms unbalanced
Maximum Distance:                       300 meters
IDU Connector Type:                     "N" type Female
ODU Connector Type:                     "N" type Female
Cable Length Criteria:
     DC Resistance:                4 ohms
     AC Resistance:                27 dB at 408.33MHz for 300 meter run
     Shielding                          100%
Signals on Interconnect Cable:          Frequency           Level
     TX IF                              408.33MHz           +13 dBm +/- 2dB
     RX IF                              140MHz              -25 to -5 dBm
     Telemetry, TX                      10MHz                0 dBm nominal
     Telemetry, RX                      18MHz               -20 to 0 dBm
     Power                              DC                  -48 VDC @ 1 amp max

Section 15:    Antenna Specification.

Frequency Band:                         37.0 - 39.5 GHz
Diameter:                               30 cm          60cm
Gain, min                               37.5dBl        44dBl
Radiation Pattern:                      As per ETS 300 197 Figure 2. Type 2C
3 dB beamwidth:                         0.8 degrees    1.6 degrees

Section 16:    Protected Configuration (1+1) Specifications.

Number of tributaries:                  Up to four

Impedance:                              120 ohm balanced
                                        or 75 ohm unbalanced

PSS Indicators:                         "A" On Line, "B" On Line

PSS Manual Switch:                      "A" On Line, "B" On Line, Auto

Switching Type:                         Combined Tx and Rx.

RF Branching losses:
     Dual antenna system                None

     Single antenna system:
               Equal loss splitter:     Main *dB, Standby *dB
               Unequal loss splitter:   Main *dB, Standby *dB

Total switching time:                   0.5 SCC

Muting Level:                           50 dB from operational

Mechanical Dimension                    1 RU Weight


Issue 1.1.                             9

<PAGE>
 
Siemens Specification for 38 GHz Radios


Section 17:    EMC and Transient Specifications.

Conducted Emissions:          150KHz-30MHz, average peak
                              CISPR-22

Radiated Emissions:           30MHz-1GHz, 3m and 10m ranges
                              EN55022
                              DIN VDE 0876

Conducted Immunity:           IEC 801-2 ESD

Radiated Immunity:            IEC 801-3

Lightning Protection:         IEC 801-5 Class 2 & 4 with optional arrestors.


Section 18:    Reliability Specifications.

IDU MTBF:                     177,355 hours (20.25 years)

ODU MTBF:                     105,233 hours (12.0 years)

Calculated using MIL-HDBK-217 Rev F


Issue 1.1.                            10

<PAGE>
 
                    Siemens Specification for 38 GHz Radios


Input Jitter Tolerance Mask
Appendix "A"

                             [GRAPH APPEARS HERE]

     ---------------------------------------------
            E1 Jitter Tolerance Mask              
             CCITT G.823 (Above Curve = In Spec)  
                      Corner Points:              
                   --------------------           
                   1Hz           2.9 UI           
                   20            1.5              
                   2.4K          1.5              
                   18K            .2              
                   100K           .2               
     =============================================

                                Frequency (Hz)

Issue 1.0.                            10 bis

<PAGE>
 
                    Siemens Specification for 38 GHz Radios


Appendix 

                             [GRAPH APPEARS HERE]

                -------------------------------------------------    
                     E1 Jitter Transfer Mask                                 
                      CCITT G.823I1.431 (Below Curve = In Spec)               
                               Corner Points:                                 
                            --------------------                              
                            1Hz          +0.5 dB                              
                            40           +0.5                                 
                            400         - 19.5                                
                            15K         - 19.5                                
                =================================================              

                                Frequency (Hz)


Issue 1.0.                            11

<PAGE>
 
                    Siemens Specification for 38 GHz Radios


Appendix "C"

Transmit Spectrum Mask

per BAPT 211 ZV 12/38 GHz


Issue 1.0                             12
<PAGE>
 
Spectral shape for 7MHz channel spacing

         [Spectral power-density/(dB) normalized to the maximum value]

                             [GRAPH APPEARS HERE]

                        ------------------------------
                             0.0 MHz          0 dB
                        ------------------------------
                          +/-3.3 MHz          0 dB
                        ------------------------------
                          +/-6.1 MHz        -25 dB
                        ------------------------------
                          +/-6.8 MHz        -25 dB
                        ------------------------------
                         +/-12.8 MHz        -45 dB
                        ------------------------------
                         +/-20.0 MHz        -45 dB
                        ------------------------------

                            Edition: September 1993

                                      13
<PAGE>
 
Spectral shape for 7MHz channel spacing (3,5MHz-channel-width, co-channel 
operation)

         Spectral power-density/(dB) normalized to the maximum value)

                             [GRAPH APPEARS HERE]


                      ----------------------------------
                                0 MHz           0 dB
                      ----------------------------------
                          +/-1.65 MHz           0 dB   
                      ----------------------------------
                          +/-3.05 MHz         -25 dB    
                      ---------------------------------- 
                          +/-3.40 MHz         -25 dB    
                      ---------------------------------- 
                          +/-6.40 MHz         -45 dB    
                      ----------------------------------
                         +/-10.00 MHz         -45 dB    
                      ----------------------------------  

                         Edition: September 1993      

                                      14

<PAGE>
 
                    Siemens Specification for 38 GHz Radios

Appendix "D"

38 GHz Channel Plans

                                      15

<PAGE>
 
              38 GHz E1 Channel Plan, 3.5 MHz Spacing, Band 2 ODU
<TABLE> 
<CAPTION> 
     3.5 MHz Channel, 1260 T/A               3.5 MHz Channel, 1260 T/A                3.5 MHz Channel, 1260 T/A      
CH # TX Frequency   AX Frequency         CH # TX Frequency   AX Frequency         CH # TX Frequency   AX Frequency   
<S>  <C>            <C>                  <C>   <C>           <C>                 <C>   <C>            <C> 
1    37620.75       38879.75             41     37759.75      39019.75            81    37899.75       39159.75
2    37623.25       38883.25             42     37763.25      39023.25            82    37903.25       39163.25
3    37626.75       38886.75             43     37766.75      39026.75            83    37906.75       39166.75
4    37630.25       38890.25             44     37770.25      39030.25            84    37910.25       39170.25
5    37633.75       38893.75             45     37773.75      39033.75            85    37913.75       39173.75
6    37637.25       38897.25             46     37777.25      39037.25            86    37917.25       39177.25
7    37640.75       38900.75             47     37780.75      39040.75            87    37920.75       39180.75
8    37644.25       38904.25             48     37784.25      39044.25            88    37924.25       39184.25
9    37647.75       38907.75             49     37787.75      39047.75            89    37927.75       39187.75
10   37651.25       38911.25             50     37791.25      39051.25            90    37931.25       39191.25
11   37654.75       38914.75             51     37794.75      39054.75            91    37934.75       39194.75
12   37658.25       38918.25             52     37798.25      39058.25            92    37938.25       39198.25
13   37661.75       38921.75             53     37801.75      39061.75            93    37941.75       39201.75
14   37665.25       38925.25             54     37805.25      39065.25            94    37945.25       39205.25
15   37668.75       38928.75             55     37808.75      39068.75            95    37948.75       39208.75
16   37672.25       38932.25             56     37812.25      39072.25            96    37952.25       39212.25
17   37675.75       38935.75             57     37815.75      39075.75            97    37955.75       39215.75
18   37679.25       38939.25             58     37819.25      39079.25            98    37959.25       39219.25
19   37682.75       38942.75             59     37822.75      39082.75            99    37962.75       39222.75
20   37686.25       38946.25             60     37826.25      39086.25            100   37966.25       39226.25
21   37689.75       38949.75             61     37829.75      39089.75            101   37969.75       39229.75
22   37693.25       38953.25             62     37833.25      39093.25            102   37973.25       39233.25
23   37696.75       38956.75             63     37836.75      39096.75            103   37976.75       39236.75
24   37700.25       38960.25             64     37840.25      39100.25            104   37980.25       39240.25
25   37703.75       38963.75             65     37843.75      39103.75            105   37983.75       39243.75
26   37707.25       38967.25             66     37847.25      39107.25            106   37987.25       39247.25
27   37710.75       38970.75             67     37850.75      39110.75            107   37990.75       39250.75
28   37714.25       38974.25             68     37854.25      39114.25            108   37994.25       39254.25
29   37717.75       38977.75             69     37857.75      39117.75            109   37997.75       39257.75
30   37721.25       38981.25             70     37861.25      39121.25            110   38001.25       39261.25
31   37724.75       38984.75             71     37864.75      39124.75            111   38004.75       39264.75
32   37728.25       38988.25             72     37868.25      39128.25            112   38008.25       39268.25
33   37731.75       38991.75             73     37871.75      39131.75            113   38011.75       39271.75
34   37735.25       38995.25             74     37875.25      39135.25            114   38015.25       39275.25
35   37738.75       38998.75             75     37878.75      39138.75            115   38018.75       39278.75
36   37742.25       39002.25             76     37882.25      39142.25            116   38022.25       39282.25
37   37745.75       39005.75             77     37885.75      39145.75            117   38025.75       39285.75        
38   37749.25       39009.25             78     37889.25      39149.25            118   38029.25       39289.25
39   37752.75       39012.75             79     37892.75      39152.75            119   38032.75       39292.75
40   37756.25       39016.25             80     37896.25      39156.25            120   38036.25       39296.25

<CAPTION> 
     3.5 MHz Channel, 1260 T/A  
CH # TX Frequency   AX Frequency
<S>  <C>            <C> 
121   38039.75       39299.75 
122   38043.25       39303.25
123   38046.75       39306.75
124   38050.25       39310.25
125   38053.75       39313.75
126   38057.25       39317.25
127   38060.75       39320.75
128   38064.25       39324.25
129   38067.75       39327.75
130   38071.25       39331.25
131   38074.75       39334.75
132   38078.25       39338.25
133   38081.75       39341.75
134   38085.25       39345.25
135   38088.75       39348.75
136   38092.25       39352.25
137   38095.75       39355.75
138   38099.25       39359.25
139   38102.75       39362.75
140   38106.25       39366.25
141   38109.75       39369.75
142   38113.25       39373.25
143   38116.75       39376.75
144   38120.25       39380.25
145   38123.75       39383.75
146   38127.25       39387.25
147   38130.75       39390.75
148   38134.25       39394.25
149   38137.75       39397.75
150   38141.25       39401.25
151   38144.75       39404.75
152   38148.25       39408.25
153   38151.75       39411.75
154   38155.25       39415.25
155   38158.75       39418.75
156   38162.25       39422.25
157   38165.75       39425.75
158   38169.25       39429.25
159   38172.75       39432.75
160   38176.25       39436.25
</TABLE> 
<PAGE>
 
              38 GHz E1 Channel Plan, 3.5 MHz Spacing, Band 4 ODU

<TABLE> 
<CAPTION> 
- -------------------------------- -------------------------------- -------------------------------- ---------------------------------
     3.5 MHz Channel, 1260 T/A        3.5 MHz Channel, 1260 T/A        3.5 MHz Channel, 1260 T/A        3.5 MHz Channel, 1260 T/A 
CH#  TX Frequency  RX Frequency  CH#  TX Frequency  RX Frequency  CH#  TX Frequency  RX Frequency   CH#  TX Frequency  RX Frequency
- -------------------------------- -------------------------------- -------------------------------- ---------------------------------
<S>  <C>          <C>            <C>  <C>          <C>            <C>  <C>          <C>            <C>  <C>          <C> 
1    38879.75     37619.75       41   39019.75     37759.75       81   39159.75     37899.75       121  39299.75     38039.75
2    38883.25     37623.25       42   39023.25     37763.25       82   39163.25     37903.25       122  39303.25     38043.25
3    38886.75     37626.75       43   39026.75     37766.75       83   39166.75     37906.75       123  39306.75     38046.75
4    38890.25     37630.25       44   39030.25     37770.25       84   39170.25     37910.25       124  39310.25     38050.25
5    38893.75     37633.75       45   39033.75     37773.75       85   39173.75     37913.75       125  39313.75     38053.75
6    38897.25     37637.25       46   39037.25     37777.25       86   39177.25     37917.25       126  39317.25     38057.25
7    38900.75     37640.75       47   39040.75     37780.75       87   39180.75     37920.75       127  39320.75     38060.75
8    38904.25     37644.25       48   39044.25     37784.25       88   39184.25     37924.25       128  39324.25     38064.25
9    38907.75     37647.75       49   39047.75     37787.75       89   39187.75     37927.75       129  39327.75     38067.75
10   38911.25     37651.25       50   39051.25     37791.25       90   39191.25     37931.25       130  39331.25     38071.25
11   38914.75     37654.75       51   39054.75     37794.75       91   39194.75     37934.75       131  39334.75     38074.75
12   38918.25     37658.25       52   39058.25     37798.25       92   39198.25     37938.25       132  39338.25     38078.25
13   38921.75     37661.75       53   39061.75     37801.75       93   39201.75     37941.75       133  39341.75     38081.75
14   38925.25     37665.25       54   39065.25     37805.25       94   39205.25     37945.25       134  39345.25     38085.25
15   38928.75     37668.75       55   39068.75     37808.75       95   39208.75     37948.75       135  39348.75     38088.75
16   38932.25     37672.25       56   39072.25     37812.25       96   39212.25     37952.25       136  39352.25     38092.25
17   38935.75     37675.75       57   39075.75     37815.75       97   39215.75     37955.75       137  39355.75     38095.75
18   38939.25     37679.25       58   39079.25     37819.25       98   39219.25     37959.25       138  39359.25     38099.25
19   38942.75     37682.75       59   39082.75     37822.75       99   39222.75     37962.75       139  39362.75     38102.75
20   38946.25     37686.25       60   39086.25     37826.25       100  39226.25     37966.25       140  39366.25     38106.25
21   38949.75     37689.75       61   39089.75     37829.75       101  39229.75     37969.75       141  39369.75     38109.75
22   38953.25     37693.25       62   39093.25     37833.25       102  39233.25     37973.25       142  39373.25     38113.25
23   38956.75     37696.75       63   39096.75     37836.75       103  39236.75     37976.75       143  39376.75     38116.75
24   38960.25     37700.25       64   39100.25     37640.25       104  39240.25     37980.25       144  39380.25     38120.25
25   38963.75     37703.75       65   39103.75     37843.75       105  39243.75     37983.75       145  39383.75     38123.75
26   38967.25     37707.25       66   39107.25     37847.25       106  39247.25     37987.25       146  39387.25     38127.25
27   38970.75     37710.75       67   39110.75     37850.75       107  39250.75     37990.75       147  39390.75     38130.75
28   38974.25     37714.25       68   39114.25     37854.25       108  39254.25     37994.25       148  39394.25     38134.25
29   38977.75     37717.75       69   39117.75     37857.75       109  39257.75     37997.75       149  39397.75     38137.75
30   38981.25     37721.25       70   39121.25     37861.25       110  39261.25     38001.25       150  39401.25     38141.25
31   38984.75     37724.75       71   39124.75     37864.75       111  39264.75     38004.75       151  39404.75     38144.75
32   38988.25     37728.25       72   39128.25     37868.25       112  39268.25     38008.25       152  39408.25     38148.25
33   38991.75     37731.75       73   39131.75     37871.75       113  39271.75     38011.75       153  39411.75     38151.75
34   38995.25     37735.25       74   39135.25     37875.25       114  39275.25     38015.25       154  39415.25     38155.25
35   38998.75     37738.75       75   39138.75     37878.75       115  39278.75     38018.75       155  39418.75     38158.75
36   39002.25     37742.25       76   39142.25     37882.25       116  39282.25     38022.25       156  39422.25     38162.25
37   39005.75     37745.75       77   39145.75     37885.75       117  39285.75     38025.75       157  39425.75     38165.75
38   39009.25     37749.25       78   39149.25     37889.25       118  39289.25     30029.25       158  39429.25     38169.25
39   39012.75     37752.75       79   39152.75     37892.75       119  39292.75     30032.75       159  39432.75     38172.75
40   39016.25     37756.25       80   39156.25     37896.25       120  39296.25     38036.25       160  39436.25     38176.25 
</TABLE>                         
<PAGE>
 
                38 GHz E1 Channel Plan MHz Spacing, Band 2 ODU

- ---------------------------------------------  
         7 MHz Channel. 1260 T/R
   CH #    TX Frequency    RX Frequency
- ---------------------------------------------
    1        37621.50        38881.50   
- ---------------------------------------------
    2        37628.50        38888.50               
- ---------------------------------------------
    3        37635.50        38895.50   
- ---------------------------------------------
    4        37642.50        38902.50   
- ---------------------------------------------
    5        37649.50        38909.50   
- ---------------------------------------------
    6        37656.50        38916.50   
- ---------------------------------------------
    7        37663.50        38923.50   
- ---------------------------------------------
    8        37670.50        38930.50   
- ---------------------------------------------
    9        37677.50        38937.50   
- ---------------------------------------------
    10       37684.50        38944.50   
- ---------------------------------------------
    11       37691.50        38951.50   
- ---------------------------------------------
    12       37698.50        38958.50   
- ---------------------------------------------
    13       37705.50        38965.50
- ---------------------------------------------
    14       37712.50        38972.50 
- ---------------------------------------------
    15       37719.50        38979.50
- ---------------------------------------------
    16       37726.50        38986.50
- ---------------------------------------------
    17       37733.50        38993.50
- ---------------------------------------------
    18       37740.50        39000.50  
- ---------------------------------------------
    19       37747.50        39007.50  
- ---------------------------------------------
    20       37754.50        39014.50  
- ---------------------------------------------
    21       37761.50        39021.50  
- ---------------------------------------------
    22       37768.50        39028.50  
- ---------------------------------------------
    23       37775.50        39035.50  
- ---------------------------------------------
    24       37782.50        39042.50  
- ---------------------------------------------
    25       37789.50        39049.50  
- ---------------------------------------------
    26       37796.50        39056.50  
- ---------------------------------------------
    27       37803.50        39063.50  
- ---------------------------------------------
    28       37810.50        39070.50  
- ---------------------------------------------
    29       37817.50        39077.50  
- ---------------------------------------------
    30       37824.50        39084.50  
- ---------------------------------------------
    31       37831.50        39091.50  
- ---------------------------------------------
    32       37838.50        39098.50  
- ---------------------------------------------
    33       37845.50        39105.50  
- ---------------------------------------------
    34       37852.50        39112.50  
- ---------------------------------------------
    35       37859.50        39119.50  
- ---------------------------------------------
    36       37866.50        39125.50  
- ---------------------------------------------
    37       37873.50        39133.50  
- ---------------------------------------------
    38       37880.50        39140.50  
- ---------------------------------------------
    39       37887.50        39147.50  
- ---------------------------------------------
    40       37894.50        39154.50  
- ---------------------------------------------
    41       37901.50        39161.50  
- ---------------------------------------------
    42       37908.50        39168.50  
- ---------------------------------------------
    43       37915.50        39175.50  
- ---------------------------------------------
    44       37922.50        39182.50  
- ---------------------------------------------
    45       37929.50        39189.50  
- ---------------------------------------------
    46       37936.50        39196.50  
- ---------------------------------------------
    47       37943.50        39203.50  
- ---------------------------------------------
    48       37950.50        39210.50  
- ---------------------------------------------
    49       37957.50        39217.50  
- ---------------------------------------------
    50       37964.50        39224.50  
- ---------------------------------------------
    51       37971.50        39231.50  
- ---------------------------------------------
    52       37978.50        39238.50  
- ---------------------------------------------
    53       37985.50        39245.50  
- ---------------------------------------------
    54       37992.50        39252.50  
- ---------------------------------------------
    55       37999.50        39259.50  
- ---------------------------------------------
    56       38006.50        39266.50
- ---------------------------------------------
    57       38013.50        39273.50
- ---------------------------------------------
    58       38020.50        39280.50
- ---------------------------------------------
    59       38027.50        39287.50
- ---------------------------------------------
    60       38034.50        39294.50
- ---------------------------------------------
    61       38041.50        39301.50
- ---------------------------------------------
    62       38048.50        39308.50
- ---------------------------------------------
    63       38055.50        39315.50
- ---------------------------------------------
    64       38062.50        39322.50
- ---------------------------------------------
    65       38069.50        39329.50
- ---------------------------------------------
    66       38076.50        39335.50
- ---------------------------------------------
    67       38083.50        39348.50
- ---------------------------------------------
    68       38090.50        39350.50
- ---------------------------------------------
    69       38097.50        39357.50
- ---------------------------------------------
    70       38104.50        39364.50
- ---------------------------------------------
    71       38111.50        39371.50
- ---------------------------------------------
    72       38118.50        39378.50
- ---------------------------------------------
    73       38125.50        39385.50
- ---------------------------------------------
    74       38132.50        39392.50
- ---------------------------------------------
    75       38139.50        39399.50
- ---------------------------------------------
    76       38146.50        39406.50
- ---------------------------------------------
    77       38153.50        39413.50
- ---------------------------------------------
    78       38160.50        39420.50
- ---------------------------------------------
    79       38167.50        39427.50
- ---------------------------------------------
    80       38174.50        39434.50
- ---------------------------------------------
<PAGE>
 
                38 GHz E1 Channel Plan MHz Spacing, Band 4 ODU

<TABLE> 
<CAPTION> 
- -------------------------------------- 
          7 MHz Channel, 1260 T/R          
CH #      TX Frequency   RX Frequency      
- -------------------------------------- 
<S>       <C>            <C> 
1          38881.50       37621.50         
- --------------------------------------  
2          38888.50       37628.50         
- --------------------------------------  
3          38895.50       37635.50         
- --------------------------------------  
4          38902.50       37642.50         
- --------------------------------------  
5          38909.50       37649.50         
- --------------------------------------  
6          38916.50       37656.50         
- --------------------------------------  
7          38923.50       37663.50         
- --------------------------------------  
8          38930.50       37670.50         
- --------------------------------------  
9          38937.50       37677.50         
- --------------------------------------  
10         38944.50       37684.50         
- --------------------------------------  
11         38951.50       37691.50         
- --------------------------------------  
12         38958.50       37698.50         
- --------------------------------------  
13         38965.50       37705.50         
- --------------------------------------  
14         38972.50       37712.50         
- --------------------------------------  
15         38979.50       37719.50         
- --------------------------------------  
16         38986.50       37726.50         
- --------------------------------------  
17         38993.50       37733.50         
- --------------------------------------  
18         39000.50       37740.50         
- --------------------------------------  
19         39007.50       37747.50         
- --------------------------------------  
20         39014.50       37754.50         
- --------------------------------------  
21         39021.50       37761.50         
- --------------------------------------  
22         39028.50       37768.50         
- --------------------------------------  
23         39035.50       37775.50         
- --------------------------------------  
24         39042.50       37782.50         
- --------------------------------------  
25         39049.50       37789.50         
- --------------------------------------  
26         39056.50       37796.50         
- --------------------------------------  
27         39063.50       37803.50         
- --------------------------------------  
28         39070.50       37810.50         
- --------------------------------------  
29         39077.50       37817.50         
- --------------------------------------  
30         39084.50       37824.50         
- --------------------------------------  
31         39091.50       37831.50         
- --------------------------------------  
32         39098.50       37838.50         
- --------------------------------------  
33         39105.50       37845.50         
- --------------------------------------  
34         39112.50       37852.50         
- --------------------------------------  
35         39119.50       37859.50         
- --------------------------------------  
36         39126.50       37866.50         
- --------------------------------------  
37         39133.50       37873.50         
- --------------------------------------  
38         39140.50       37880.50         
- --------------------------------------  
39         39147.50       37887.50         
- --------------------------------------  
40         39154.50       37894.50         
- -------------------------------------- 
41         39161.50       37901.50
- --------------------------------------                                  
42         39168.50       37980.50
- --------------------------------------                                  
43         39175.50       37915.50
- --------------------------------------                                  
44         39182.50       37922.50
- --------------------------------------                                  
45         39189.50       37929.50
- --------------------------------------                                  
46         39196.50       37936.50
- --------------------------------------                                  
47         39203.50       37943.50
- --------------------------------------                                  
48         39210.50       37950.50
- --------------------------------------                                  
49         39217.50       37957.50
- --------------------------------------                                  
50         39224.50       37964.50
- --------------------------------------                                  
51         39231.50       37971.50
- --------------------------------------                                  
52         39238.50       37978.50
- --------------------------------------                                  
53         39245.50       37985.50
- --------------------------------------                                  
54         39252.50       37992.50
- --------------------------------------                                  
55         39259.50       37999.50
- --------------------------------------                                  
56         39266.50       38006.50
- --------------------------------------                                  
57         39273.50       38013.50
- --------------------------------------                                  
58         39280.50       38020.50
- --------------------------------------                                  
59         39287.50       38027.50
- --------------------------------------                                  
60         39204.50       38034.50
- --------------------------------------                                  
61         39301.50       38041.50
- --------------------------------------                                  
62         39308.50       38048.50
- --------------------------------------                                  
63         39315.50       38055.50
- --------------------------------------                                  
64         39322.50       38062.50
- --------------------------------------                                  
65         39329.50       38069.50
- --------------------------------------                                  
66         39336.50       38076.50
- --------------------------------------                                  
67         39343.50       38083.50
- --------------------------------------                                  
68         39350.50       38090.50
- --------------------------------------                                  
69         39357.50       38097.50
- --------------------------------------                                  
70         39364.50       38104.50
- --------------------------------------                                  
71         39371.50       38111.50
- --------------------------------------                                  
72         39378.50       38118.50
- --------------------------------------                                  
73         39385.50       38125.50
- --------------------------------------                                  
74         39392.50       38132.50 
- --------------------------------------                                  
75         39399.50       38139.50
- --------------------------------------                                  
76         39400.50       38140.50 
- --------------------------------------                                  
77         39413.50       38153.50
- --------------------------------------                                  
78         39420.50       38160.50
- --------------------------------------                                  
79         39427.50       38167.50
- --------------------------------------                                  
80         39434.50       38174.50 
- -------------------------------------- 
</TABLE> 

                                      19
<PAGE>
 
                      [LETTERHEAD OF P-COM APPEARS HERE]



     Link Manager Features:

The control product is a PC based (Windows) program. Either local site or remote
site terminal can be controlled and monitored by the software. The software will
provide the following functionality:

1.  Channel Control
2.  Link ID
3.  Transmit Power Set    
4.  Transmitter Mute 
5.  Bit Rate Selection (1x2, 2x2, 4x2)
6.  AGC Level Display
7.  B.E.R. Performance Display
8.  Loopback Set and Test:
       a) IDU Loopback
       b) ODU Loopback (requires external equipment)      
       c) Link Loop (per line)
       d) Local Loop (per line) 
       e) Link Test (per line)
9.  Enable/Invert Line Alarming
10. Configure B.E.R. Triggered AIS
11. Display ODU Band
12. Set T/R Address
12. Alarms display, and alarm history display of:
       a) B.E.R. alarm
       b) Cable Solid alarm
       c) Cable Open alarm
       d) Cable Short alarm
       e) Configuration alarm
       f) External Input
       g) IDU Solid alarm
       h) Line alarm (AIS, LOS, USD) USD = Unexpected Signal Detected
       i) Loopback condition
       j) ODU Solid alarm
       k) Peer Channel alarm
       l) Receive Mute
       m) Remote alarm
       n) Telemetry alarm
       o) Transmit Mute alarm
       p) Clock Recovery alarm
14. Clear Alarm History    
 
<PAGE>
 
                                 ATTACHMENT 2

                               QUALITY ASSURANCE
<PAGE>
 
                                 ATTACHMENT 2
                                        
                              __________________


                               QUALITY ASSURANCE
                                        


1.  SCOPE

To evaluate the supplier Q.A. System and the quality requirements for the
"Product Family".

2.  SUPPLIER EVALUATION

The supplier evaluation is carried out through the questionnaire 018-004/21 PQ,
to be filled up by the supplier and delivered to Siemens.
Siemens reserves the right to perform quality audits based on the questionnaire
and/or the supplier Quality Assurance Plan.

3.  Q.A. PRODUCT REQUIREMENTS

Each product will be defined by a detailed technical specification (see
attachment 1 to this Agreement).
Besides the specific mechanical and electrical parameters therein contained, the
following general requirements shall be met:

REQUIREMENTS

3.1    Environmental conditions

3.1.1  Storage

       Weatherprotected, not temperature controlled storage location. According
       to ETS 300 019-1-1 class 1.2 and ETS 300019-2-1 test specification T 1.2

3.1.2  Transportation

       Public transportation According to ETS 300 019-1-2 class 2.3 and ETS
       300019-2-2 test specification T 2.3

SUPPLIER'S COMMENTS

3.1.1  storage IAW Technical specifications currently in your possession.

3.1.2  To date, P-COM equipment[ has not been evaluated for compliance to
       referenced specifications.]**
<PAGE>
 
REQUIREMENTS

3.1.3   In use

3.1.3.1 Indoor locations

        Partly temperature controlled locations (customers premises). According
        to ETS 300-1-3 and to ETS 019-2-3 test specification T 3.2.

3.1.3.2 Outdoor locations

        Non weatherprotected locations.
        According to ETS 300 019-14 class 4.1E and to ETS 300 019-2-4 test
        specification T 4.1E.

3.2     Documents control

        The supplier shall provide a list of units and sub-assemblies with
        their part-number and their issue.

        Any design change shall result in a change of the issue; a description
        of the new issue shall be provided and the compatibility with the
        previously delivered units shall be guaranteed.

3.3     Components control

        High quality components shall be used; their qualification shall be
        carried out through a dedicated procedure. Siemens reserves the right to
        require the list of component used, their qualification procedure and
        test results.

3.4     Workmanship requirements

        The supplier shall have documented workmanship standards, suitable for
        the used technology. Repairs also shall be considered.

SUPPLIER'S COMMENTS

3.1.3.1 Indoor use IAW Technical specification currently in your possession

3.1.3.2 Outdoor use IAW Technical specification currently in your possession.

3.2     The control, approval, issue, all changes to P-COM documents is
        accomplished in accordance with P-COM QAP 4.5 document control.

3.3     The selection and qualification of all products is accomplished in
        accordance with P-COM QAP 4.4 Design control

3.4     Workmanship standard for all P-COM products is IPC-A-610.

        Repairs are accomplished in accordance with IPC-R-700 as directed by P-
        COM Material Review Board (MRB)
<PAGE>
 
REQUIREMENTS

3.5  Final test documentation and declaration of conformity

     For each delivered product a declaration of conformity according to EN
     45014 shall be provided.

     Moreover each product shall be accompanied by a final test report
     containing the main test results agreed upon between Siemens and supplier.

     The whole equipment, as well as the single replaceable parts, shall be
     identified by a serial number.

     For every delivered equipment a document shall indicate the serial numbers
     of the equipment and of the relevant replaceable parts.


3.6  Product traceability

     The supplier shall provide a traceability method to follow the
     manufacturing history of each unit and the possible problems arisen during
     the production cycle.

3.7  Reliability

     For each product the supplier shall provide the MTBF value, for the
     complete equipment and for each replaceable part, and its calculation
     method.

3.8  Safety

     Each product shall be designed according to the safety procedure EN 60950

3.9  Packing

     Each product shall be packed in a single, suitable box.

SUPPLIER'S COMMENTS

3.5  P-COM provides with all equipment shipped, a certificate of Conformance.
which identifies each Top assembly part, by serial number. In addition P-COM can
make provisions to include a copy the final Systems Test Data for each
individual Indoor Unit (IOU) and Outdoor Unit (ODU) in the respective shipping
container

3.6  All products manufacture by P-COM are processed through the manufacturing
cycle on a Production, Assembly Traveler which identifies specific operations,
applicable drawings/documentation, and quality inspection points.

3.7  MTBF shall be provided using parts count reliabilty, prediction performed
to the requirements of MIL-HDBK-217F Notice 1

3.8  Product compliant to EN60950

3.9  All products are shipped individual containers, accompanied by any
applicable installation hardware in accordance with P-COM QAP 4.15
<PAGE>
 
REQUIREMENTS

3.10  Flammability

      All molded materials shall meet the flammability requirements according to
      IEC 695 T 2.2 or, alternatively, according to UL 94 V-0 (Preferred) or UL
      94 V-1. Moreover the oxygen index shall be greater than or equal to 28%
      according to ASTM method D2863-77.

3.11  Manufacturing Quality Plan

      The supplier shall provide the Manufacturing Quality Plan complete with
      the quality control steps, the control criteria, the data acquisition
      documents, the responsible department and the test markings.

SUPPLIER'S COMMENTS

3.10  To date, P-COM equipment has not been evaluated for compliance to 
requirements specifications.

3.11  In the case that customer Quality requirements exceed or differ from the 
P-COM Quality Assurance Manual and its supporting Quality Assurance Procedures,
a Customer Specific Quality Plan can and will be generated.
<PAGE>
 
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Esec. FACCIO Contr. G.V.                     Ed. Var.              Firma [_]
- --------------------------------------------------------------------------------


                         VALUTAZIONE DEI FORNITORI DI

                           SOTTOINSIEMI ELETTRONICI


                       Original electronic manufacturer

                               (OEM) evaluation

              
               P-COM INC.
Fornitore         : ..........................................................
Vendor

NOME E FIRMA DEL
RESPONSABILE DELL 'ASSICURAZIONE QUALITA
QUALITY ASSURANCE MANAGER NAME AND SIGNATURE:

     Kenneth Bean P-COM, Director of Quality                 Kenneth Bean
 ..............................................................................


Data : .................
DATE   FEB 8 1995

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

                        VALUTAZIONE DEI FORNITORI DI             018-004/21-PQ
                                                                 ---------------
SIEMENS                    SOTTOINSIEMI ELECTRONICI                            
                 ORIGINAL ELECTRONIC MANUFACTURER EVALUATION      FOGLIO 1/12

- --------------------------------------------------------------------------------
<PAGE>
 
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- --------------------------------------------------------------------------------
1.   SCOPO
     SCOPE

     I1 questionario riporta i criteri generali per la valutazione de fornitori 
     di lavorazioni.
     The questionnaire defines the general criteria to evaluate vendors 
     functional electronic subsystems.

2.   STRUTTURA
     STRUCTURE

     I1 documento e strutturato sottoforma di check-list, ed e diviso in tre 
     parti;
     The documents is structured, as a check-list form, in three parts:

          *    Informazioni generali
               General informations

          *    Organizzazione del Sistema Qualita Aziendale
               Quality Assurance system

          *    Qualita nella produzione.
               Manufacturing quality.

3.   APPLICABILITA'
     APPLICABILITY

I1 documento si applica per la valutazione dei nuovi fornitori il cui Sistema 
di Qualita e sconosciuto. Inoltre puo essere usato durante gli audits di 
qualita.
The document shall be applied to evaluate new suppliers whose Quality System is 
unknown. Moreover it can be used as a basis for quality audits.

- --------------------------------------------------------------------------------
                       VALUTAZIONE DEI FORNITORI DI              018-004/21-PQ
SIEMENS                  SOTTOINSIEMI ELETTRONICI
               ORIGINAL ELECTRONIC MANUFACTURER EVALUATION       Foglio 2/12
- --------------------------------------------------------------------------------

<PAGE>
 
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- --------------------------------------------------------------------------------

4.   INFORMAZIONI GENERALI
     GENERAL INFORMATION

                                             P-COM INC.
4.1  Ragione Sociale                         ...................................
     Company name

                                             3175 S. Winchester Blvd.
       -  Indirizzo                          Campbell, CA 95008
                                             ...................................
          Address

       -  Telefono                           (408) 866-3666
                                             ...................................
          Phone

       -  Fax                                (408) 866-3655
                                             ...................................

4.2  Appartenenza ad un gruppo                                       
     Group member                                                      Yes    

          American Electronics Association
 ................................................................................

 ................................................................................

4.3  Capitale sociale                                  N/A
                                             ...................................
     Capital stock

4.4  Fatturato dell'ultimo anno                        9.2M
                                             ...................................
     Last year sales

4.5  Investimenti (ultimo anno)              ...................................
     Investments (last year)
     
       -  Ricerca e Sviluppo                           $6.9M
                                             ...................................
          R and D

       -  Produzione                                   N/A
                                             ...................................
          Production

       -  Qualita                                      N/A
                                             ...................................
          Quality

4.6  Politica costi di riduzione
     Cost reduction policy                                             Yes    

 ................................................................................

 ................................................................................

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

                           VALUTAZIONE DEI FORNITORI DI          018-004/21-PQ
                                                              ------------------
SIEMENS                    SOTTOINSIEMI ELECTRONICI 
                  ORIGINAL ELECTRONIC MANUFACTURER EVALUATION    Foglio 3/12

- --------------------------------------------------------------------------------
<PAGE>
 
________________________________________________________________________________

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4.7  Principali prodotti
     Main product

                           Microwave Radio Equipment
 ................................................................................

 ................................................................................

 ................................................................................

4.8  Settori del mercato verso i quali e indirizzato, in %, il prodotto (TLC, 
     consumer...)
     % of product distribution over market segment (TLC, consumer ...)

 ................................................................................

                           Telecommunications  100%
 ................................................................................

 ................................................................................

4.9  Ripartizione del prodotto per aree geografiche di mercato  
     Product distribution over geographic areas
     
     Europe 60%                North America       16%
 ................................................................................

     Central & South America  24%
 ................................................................................

4.10 Principali Clienti (none e % di fatturato)
     Main customers (name and % of sales)

 ................................................................................
                         
               N/A
 ................................................................................

 ................................................................................


4.11 Altri clienti apparteneti al gruppo Siemens
     other customers from Siemens corporate                         Yes    (NO)

 ................................................................................

 ................................................................................



________________________________________________________________________________

                         VALUTAZIONE DEI FORNITORI DI              018-004/21-PQ
SIEMENS                    SOTTOINSIEMI ELETTRONICI                -------------
                   ORIGINAL ELECTRONIC MANUFACTURER EVALUATION      Foglio 4/12
________________________________________________________________________________

<PAGE>
 
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- ------------------------------------------------------------------------

4.12 N degrees dipendenti della Societa           December 31, 1994
     Company employees                       ...........................
                        
        - Ricerca e Sviluppo                      29
          R and O                            ...........................
                   
        - Ingegneria                              N/A
          Engineering                        ...........................

        - Controllo qualita (staff)               8
          Quality Assurance                  ...........................

        - Produzione                              23
          Production                         ...........................

        - Approvigionamento                       N/A
          Purchasing                         ...........................

        - Ispezione in arrivo                     N/A
          Incoming inspection                ...........................

        - Test fabbricazione                      N/A
          Manufacturing test                 ...........................

        - Test finale                             N/A
          Final test                         ...........................

        - Amministrazione e servizi               7 
          Administration and services        ...........................

        Sales & Marketing     11
                              --
                              78

- -------------------------------------------------------------------------
                    VALUTAZIONE DEI FORNITORI DI            018-004/21-PQ
                                                          --------------- 
SIEMENS               SOTTOINSIEMI ELETTRONICI            
           ORIGINAL ELECTRONIC MANUFACTURER EVALUATION       Foglio 5/12
- -------------------------------------------------------------------------

- -------------------------------------------------------------------------
<PAGE>
 
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- --------------------------------------------------------------------------------

5.   ORGANIZZAZIONE DEL SISTEMA QUALITA'
     QUALITY ASSURANCE SYSTEM ORGANIZATION

5.1  E' disponibile l'organigramma generale della Societa?
     Is Company organization diagram available?                       Yes   
                                                                            
          - Se si, allegare                                                 
            If yes, enclose        [X]                                      
                                                                            
5.2  Esiste un Manuele del Sistema Qualita aziendale?                 Yes  
     Do you have a Company Quality System Manual?                            
                                                                             
          - Se si, allegare                                                  
            If yes, enclose        [X]                                       
                                                                           
          - Data dell'ultimo aggiornamento Revision E dated 3-94      Yes  
            Last issue date

          - Chi e responsabile degli aggiornamenti?
            Who is responsible for the updating?

                    Director of Quality

5.3  Il Sistema Qualita aziendale e organizzato in accordo alle norme ISO 90017
     Is the Quality system organized  accuring to Iso 9001 standard?  Yes  

     Se si:
     If yes:

          - Il sistema e gia certificato?
            Is the system already certified?                          Yes   No
                                                                            
          - La certificazione e in corso?                                   
            Is the certification in progress?                               No
                                                                               
          - La certificazione e programmata                                    
            Is the certification planned?                                   No 

          - Quando?                          N/A
            When

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

                         VALUTAZIONE DEI FORNITORI DI              018-004/21-PQ
                                                                ----------------
SIEMENS                    SOTTOINSIEM ELETTRONICI                 Foglio 6/12
                  ORIGINAL ELECTRONIC MANUFACTURER EVALUATION

- --------------------------------------------------------------------------------
<PAGE>
 
- -----------------------------------------------------------------------------
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- -----------------------------------------------------------------------------

5.4  Esiste l'organigramma dell'organizzazione del Sistema Qualita?
     Is the Quality organization diagram available?                  [Yes]  No  
                                                                          
        - Se si, allegare [x]                                             
          If yes, enclose                                                 
                                                                          
5.5  La Societa ha sviluppato proprie procedure scritte che definiscono   
     le attivita delle seguenti funzioni?:                                
     Do you have written procedures defining the following activities?    
                                                                          
        - Ricerca e sviluppo                                              
          R and D                                                    [Yes]  No  
                                                                          
        - Ingegneria                                                      
          Engineering                                                [Yes]  No
                                                                          
        - Assicurazione Qualita                                           
          Quality Assurance                                          [Yes]  No  
                                                                          
        - Approvvigionamenti                                              
          Purchasing                                                 [Yes]  No  
                                                                          
        - Accettazione materiali                                          
          Incoming Inspection                                        [Yes]  No  
                                                                          
        - Magazzini                                                       
          Stores                                                     [Yes]  No  
                                                                          
        - Produzione                                                      
          Production                                                 [Yes]  No  
                                                                          
        - Controllo di linea                                              
          Manufacturing Test                                         [Yes]  No  
                                                                          
        - Collaudo finale                                                 
          Final Test                                                 [Yes]  No  

5.6   Quale ente e responsible dell'aggiornamento delle procedure? 
      Which department is responsible for the procedures updating?

 ........The Applicable departments are responsible..............................
                               for updating their respective procedures.

- --------------------------------------------------------------------------------
SIEMENS            VALUTAZIONE DEI FORNITORI DI             018-004/21-PQ
                                                            -------------    
                      SOTTOINSIEMI ELETTRONICI              Foglio 7/12
            ORIGINAL ELECTRONIC MANUFACTURER EVALUATION 
- --------------------------------------------------------------------------------
  
<PAGE>
 
- --------------------------------------------------------------------------------

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

5.7  Compiti della Qualita
     Quality jobs

     Quality Management: establish policies and procedures necessary to insure 
Quality, integrity and Reliability of all P-COM products.

Quality Engineering: Implementation and enforcement of quality requirements, 
including but not limited to generation and maintenance of procedures, vendor 
surveillance and control, analysis of quality data for continous improvement 
coordination of all failure analysis of corrective action.

Inspection: product inspection and tabulation, segregation and quarantine of 
Non-conforming.

          - Esegue valutazioni sulla qualita di processo?
            Does the Q.A. evaluate the quality process?                    Yes
                                                                              
          - Esistono procedure scritte di controllo di processo?              
            Do you have a written procedure to control the process?        Yes
                                                                              
          - Esegue valutazioni sulla qualita di prodotto?                     
            Does the Q.A. evaluate the quality product?                    Yes
                                                                              
          - Esistono procedure scritte di controllo di prodotto?              
            Do you have a written procedure to control the product?        Yes
                                                                              
          - La qualita partecipa alla gestione delle non conformita?          
            Is the Q.A. involved in non conformities management?           Yes
                                                                               
          - Esiste una procedura scritta relativa all segregazione e           
            segregazione e revisione delle parti non conformi?                 
            Do you have a written procedure relevant to non conformities       
            segregation?                                                   Yes

          - La qualita esercita un azione di coordinamento nello sviluppo delle 
            azioni correttive?
            Does Q.A. coordinate the corrective actions?                   Yes
                                                                               
          - I risultati raggiunti sono oggetto di un rapporto scritto?         
            Do you have a written report relevant to the corrective actions    
            results?                                                       Yes
                                                                               
          - Esiste una procedura scritta relativa alle azioni correttive?      
            Do you have a written procedure relevant to the corrective         
            actions?                                                       Yes
                                                                               
5.8  Esiste una procedura scritta per qualificare i fornitori?                 
     Do you have a written procedures to qualify vendors?                  Yes

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

                         VALUTAZIONE DEI FORNITORI DI              018-004/21-PQ
                                                                 ---------------
SIEMENS                    SOTTOINSIEMI ELETTRONICI
                  ORIGINAL ELECTRONIC MANUFACTURER EVALUATION      Foglio 8/12

- --------------------------------------------------------------------------------
<PAGE>
 
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- --------------------------------------------------------------------------------

5.9  Esiste una lista fornitori?
     Do you have a qualified vendor list?                             Yes   
                                                                            
5.10 Chi e l'ente responsabile della qualificazione dei fornitori?
     Which department is responsible to qualify vendors?        

          Purchasing and Quality Management

________________________________________________________________________________

5.11 La Qualita e responsabile della qualificazione del prodotto?
     Is the Q.A. responsible of the product qualification             No     
                                                                              
          Se No, chi e responsabile?    Design Engineering                    
          If No, Who is responsible?

5.12 E' disponibile il, piano di qualificazione del prodotto con i relativi 
     tests elettrici e ambientali?
     Is the product qualification plan, with the relevant 
     electrical/environmental tests, available?                       Yes     
                                                                              
          Se  Si, allegare
          If Yes, enclose     [ ] *NOTE: Product qualification is performed and
                                         data is recorded. Records of tests are
                                         available for on-site review

5,13 Viene effettuata la stima del tasso di guasto del prodotto?
     Do you perform the product failure rate evaluation?              Yes      

          Se si, siete in grado di fornire il valore di MTBF?
          If yes, are you able to give the MTBF value and to specify the 
          evaluation methods?                                         Yes      

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

                         VALUTAZIONE DEI FORNITORI DI              018-004/21-PQ
                                                                 ---------------
SIEMENS                    SOTTOINSIEME ELETTRONICI                
                  ORIGINAL ELECTRONIC MANUFACTURER EVALUATION      Foglio 9/12
<PAGE>
 
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- --------------------------------------------------------------------------------

6.     QUALITA' NEILA PRODUZIONE
       PRODUCTION QUALITY                                            [Yes]  No 
                                                                               
6.1    E' disponibile il flow-chart produttivo?             
       Is the MFR flow-chart available?                              [Yes]  No

          - Se Si, allegare                                                    
            If Yes, enclose        [X]                                         
                                                                               
6.2    Ci sono procedure scritte per l'incoming inspection?                    
       There are a written procedure for incoming inspection?        [Yes]  No 
                                                                               
6.3    I dati di incoming inspection sono registrati e disponibili?            
       Are the incoming inspection data recorded and available?      [Yes]  No 
                                                                               
6.4    Esiste una procedura scritta per la protezione contro le                
       cariche elettrostatiche?                                                
       There is a written procedure for ESD precautions?             [Yes]  No
                                                                               
          - Se No, vengono applicate precauzioni contro le                     
            cariche elettrostatiche?                                           
            If No, ESDS precautions are applied?                     [Yes]  No 

6.5    Vengono effettuati i controlli di linea?
       Does the company perform the line controls?

          - Esistono procedure scritte per guidare l'attivita
            del personale?
            There are written procedure to drive the personnel 
            activity?                                                [Yes]  No
                                                                              
6.6    La rintracciabilita dei prodotti e assicurata?                        
       The products traceablity is guaranteed?                       [Yes]  No

          - Come?  All products manufactured by P-COM are processed through the
            How?   manufacturing cycle on a production assenbly traveler, which 
                   identifies specific operations, applicable drawings, 
                   documentation and quality inspection points. These records 
                   are retained in accordance with P-COM QAP 4.16, Quality 
                   records.

          - La relativa documentazione di fabbricazione e in edizione 
            controllata?
            There is a controlled issue of the relevant MFR 
            documentation?                                           [Yes]  No

                  
- --------------------------------------------------------------------------------
                         VALUTAZIONE DEI FORNITORI DI            018-004/21-PQ
                                                                 ---------------
SIEMENS                    SOTTOINSIEMI ELECTTRONICI
                  ORIGINAL ELECRONIC MANUFACTURER EVALUATION     Foglio 10/12
- --------------------------------------------------------------------------------

<PAGE>
 
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- --------------------------------------------------------------------------------

6.7   Esiste una zona dedicata per il collaudo finale?
      Do you have a dedicated area for the final test?               [Yes]  No
                                                                              
6.8   Esiste una procedura scritta per il collaudo finale?                    
      Do you have a written procedure for the final test?            [Yes]  No
                                                                              
6.9   La strumentazione e' in regime di taratura?                             
      The instrumentation is under calibration control?              [Yes]  No
                                                                              
    - Esiste un reparto di taratura?                                          
      Do you have a calibration department?                           Yes   [No]
                                                                              
    - Esiste una procedura scritta per la taratura?                           
      Do you have a written procedure for the calibration?           [Yes]  No
                                                                              
    - E' prevista la rimozione della strumentazione non conforme?             
      Is the non-conforming instrumentation removed?                 [Yes]  No
                                                                             
    - Esistono documenti per la raccolta dei risultati della                 
      taratura?                                                              
      Do you have a data collection relevant to calibration results? [Yes]  No
    
    - Presso quali Istituti Metrologici si procede alla taratura 
      dei campioni primari?
      Which Metrologic Institutes are incharged to calibrate the standards?

All standards and records demonstrate traceability to the National Institute of 
Standards and Technology

6.10  Esiste una procedura di riparazione?
      Does the company have a written procedure for repairing?        Yes   No

          -  Se si allegare        [_] *Repairs are accomplished in accordance
             If Yes, enclose            with IPC-R-700 as directed by P-COM
                                        Material Review Board (MRB)

- --------------------------------------------------------------------------------
                         VALUTAZIONE DEI FORNITORI DI            018-004/21-PQ
                                                                 ---------------
SIEMENS                    SOTTOINSIEMI ELETTRONICI              Foglio 11/12
                  ORIGINAL ELECTRONIC MANUFACTURER EVALUATION
- --------------------------------------------------------------------------------
<PAGE>
 
________________________________________________________________________________
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________________________________________________________________________________

7.   OSSERVAZIONI DEL FORNITORE
     VENDOR'S REMARKS

 ................................................................................

 ................................................................................

 ................................................................................

 ................................................................................

 ................................................................................

 ................................................................................





________________________________________________________________________________

                         VALUTAZIONE DEI FORNITORI DI              018-004/21-PQ
SIEMENS                    SOTTOINSIEMI ELETTRONICI                -------------
                   ORIGINAL ELECRONIC MANUFACTURER EVALUATION      Foglio  12/12
________________________________________________________________________________

(C) SIEMENS TELECOMUNICAZIONI S.P.A.

<PAGE>
 
                                    P COM 
                              QUALITY ASSURNACE 
                                    MANNUAL

[PHOTO APPEARS HERE]                                        [PHOTO APPEARS HERE]
RESEARCH & DEVELOPMENT                                        CUSTOMER SERVICE

            
                                QUALITY SYSTEM



[PHOTO APPEARS HERE]                                        [PHOTO APPEARS HERE]
MANFACTURING & TEST                                           SALES & MARKETING

                                 DOC. CONTROL

                                  FEB 08 1995
<PAGE>
 
- --------------------------------------------------------------------------------


                           QUALITY ASSURANCE MANUAL
                                        

                            COPY CONTROL NO.______

                            [_]  UNCONTROLLED COPY

 
This Quality Assurance Manual addresses the requirements of ISO9001 -
1987(BS5750: Part 1, EN29001 - 1987) and is the property of P-Com, Inc., and
must be returned upon request.

This manual describes in outline form the organization and the quality related
systems within the Company, and is intended to assist the recipient in
understanding how the Company's Quality System works.

The Quality System outlined is enforced by separate Quality Assurance Procedures
that are considered confidential and may not be distributed outside the Company.

This manual in whole or part may not be copied without the written permission of
the President of the Company.

                                                P-Com, Inc.
                                                3175 S. Winchester Boulevard
                                                Campbell, CA 95008
                                                U.S.A.
<PAGE>
 
- --------------------------------------------------------------------------------

                               TABLE OF CONTENTS

ISO 9001 CROSS REFERENCE TABLE........................................  3
ISO 9001 CROSS REFERENCE..............................................  3
1.0 QUALITY POLICY STATEMENT..........................................  4
2.0 APPLICABLE DOCUMENTS..............................................  5
3.0 GLOSSARY..........................................................  5
4.0 CORPORATE PROFILE.................................................  6
5.0 ORGANIZATION......................................................  7
6.0 MANAGEMENT RESPONSIBILITY.........................................  8
7.0 QUALITY SYSTEM.................................................... 10
8.0 PROCEDURE SUMMARY................................................. 11
LOCATION MAP.......................................................... 17
RECORD OF REVISIONS................................................... 18
<PAGE>
 
- --------------------------------------------------------------------------------

                           ISO 9001 CROSS REFERENCE
                           ------------------------  

<TABLE> 
<CAPTION> 
- ------------------------------------------------------------------------------------------------------------------------- 
ISO 9001                                                                           QAM                          
 PARA                        REQUIREMENTS                                          PARA       PAGE        QAP # 
- -------------------------------------------------------------------------------------------------------------------------  
<S>               <C>                                                              <C>        <C>         <C> 
4.1.1             Quality Policy                                                   1.0        4                              
- -------------------------------------------------------------------------------------------------------------------------  
4.1.2.1           Responsibility and Authority                                     5.0        7                            
- -------------------------------------------------------------------------------------------------------------------------  
4.1.2.3           Management Representative                                        6.0        8                            
- -------------------------------------------------------------------------------------------------------------------------  
4.1.3             Management Review                                                8.1        11          03.70.002                 
- -------------------------------------------------------------------------------------------------------------------------  
4.2               Quality System                                                   7.0        10                                    
- -------------------------------------------------------------------------------------------------------------------------  
4.3               Contract Review                                                  8.2        11          03.70.003                 
- -------------------------------------------------------------------------------------------------------------------------  
4.4.1             Design Control                                                   8.3        11          03.70.004                 
- -------------------------------------------------------------------------------------------------------------------------  
4.4.5             Design Verification                                            8.3.5        12          03.70.004                 
- -------------------------------------------------------------------------------------------------------------------------  
4.4.6             Design Changes                                                 8.3.6        12          03.70.004                 
- -------------------------------------------------------------------------------------------------------------------------  
4.5               Document Control                                                 8.4        12          03.70.005                 
- -------------------------------------------------------------------------------------------------------------------------  
4.6               Purchasing                                                       8.5        13          03.70.006                 
- -------------------------------------------------------------------------------------------------------------------------  
4.7               Purchaser Supplied Product                                       8.6        13          03.70.007                 
- -------------------------------------------------------------------------------------------------------------------------  
4.8               Product Identification and Traceability                          8.7        13          03.70.008                 
- -------------------------------------------------------------------------------------------------------------------------  
4.9               Process Control                                                  8.8        14          03.70.009                 
- -------------------------------------------------------------------------------------------------------------------------  
4.10              Inspection and Testing                                           8.9        14          03.70.010                 
- -------------------------------------------------------------------------------------------------------------------------  
4.11              Inspection, Measuring and Test Equipment                        8.10        14          03.70.011                 
- -------------------------------------------------------------------------------------------------------------------------  
4.12              Inspection and Test Status                                      8.11        15          03.70.012                 
- -------------------------------------------------------------------------------------------------------------------------  
4.13              Control of Non-Conforming Material                              8.12        15          03.70.013                 
- -------------------------------------------------------------------------------------------------------------------------  
4.13.1            Non-conformance Review and Disposition                        8.12.1        15          03.70.013                 
- -------------------------------------------------------------------------------------------------------------------------  
14.14             Corrective Action                                               8.13        15          03.70.014                 
- -------------------------------------------------------------------------------------------------------------------------  
14.15.1           Handling, Storage, Packaging and Delivery                       8.14        15          03.70.015 
- -------------------------------------------------------------------------------------------------------------------------  
4.16              Quality Records                                                 8.15        16          03.70.016                 
- -------------------------------------------------------------------------------------------------------------------------  
4.17              Internal Quality Audits                                         8.16        16          03.70.017                 
- -------------------------------------------------------------------------------------------------------------------------  
4.18              Training                                                        8.17        16          03.70.018                 
- -------------------------------------------------------------------------------------------------------------------------  
4.19              Servicing                                                       8.18        16                                    
- -------------------------------------------------------------------------------------------------------------------------  
4.20              Statistical Techniques                                          8.19        16          03.70.019                 
- -------------------------------------------------------------------------------------------------------------------------       
</TABLE> 
<PAGE>
 
- --------------------------------------------------------------------------------

1.0 QUALITY POLICY STATEMENT
- ----------------------------

    It is the policy of P-Com, Inc., to provide the Customer with products that
    conform to all aspects of generally accepted industrial standards and
    specified contract requirements.

    Quality is of vital importance to the Company and we totally commit to a
    Quality Assurance Management System that conforms to the requirements of
    ISO9001:1987.

    All employees are responsible for quality, and are responsible for achieving
    the specified levels of quality at all stages of work that have an effect on
    the final quality of the product supplied.

    We undertake, by practical example and training, to ensure that each
    employee has a proper understanding of the quality function and it's direct
    relevance and significant contribution to our success.

1.1 MANAGEMENT CERTIFICATION

    I hereby certify that this Quality Assurance Manual accurately describes the
    Quality Assurance Management System in use within P-Com, Inc., and
    encompasses the requirements of ISO 9001:1987.

     President and CEO /s/ George P. Roberts           Date:3/21/94
                       ----------------------               -------
                         George P. Roberts
<PAGE>
 
- --------------------------------------------------------------------------------

1.2 COMPANY CONTACTS


    All questions concerning P-Com's commitment to the contents of this Quality
    Assurance Manual may be directed to either George Roberts, President and
    CEO, or Kenneth Bean, Quality Assurance Manager, by the following methods:  

    Tel:    408-866-3666          
    Fax:    408-566-3655          
    Mail:   P-Com, Inc.   
            3175 S. Winchester Boulevard          
            Campbell, CA 95008                    
            U.S.A.                                 

2.0 APPLICABLE DOCUMENTS
- ------------------------

    ISO 9001:1987 Quality Systems                                              
    BS 5750 Part 1:1987 Quality Systems                                        
    EN 29001:1987 Quality Systems                                              
    ANSI/ASQC Q91 Quality Systems                                            
    QAP 03.70.002 Management Review - QAP 4.1                                  
    QAP 03.70.003 Contract Review - QAP 4.3                                    
    QAP 03.70.004 Design Control - QAP 4.4                                     
    QAP 03.70.005 Document Control - QAP 4.5                                   
    QAP 03.70.008 Purchasing - QAP 4.6                                         
    QAP 03.70.007 Purchaser Supplied Product - QAP 4.7                         
    QAP 03.70.008 Product l.D. and Traceability - QAP 4.8                      
    QAP 03.70.009 Process Control - QAP 4.9                                    
    QAP 03.70.010 Inspection and Testing - QAP 4.10                            
    QAP 03.70.011 Inspection, Measuring and Test Equipment - QAP 4.11
    QAP 03.70.012 Inspection and Test Status - QAP 4.12                        
    QAP 03.70.013 Control of Non-conforming Product - QAP 4.13                 
    QAP 03.70.014 Corrective Action - QAP 4.14                                 
    QAP 03.70.015 Handling, Storage, Packaging and Delivery - QAP 4.15         
    QAP 03.70.016 Quality Records - QAP 4.16                                   
    QAP 03.70.017 Internal Quality Audits - QAP 4.17                           
    QAP 03.70.018 Training - QAP 4.18                                          
    QAP 03.70.019 Statistical Techniques - QAP 4.20                            

3.0 GLOSSARY
- ------------

    QUALITY: The totality of features and characteristics of the product that
    bear on its ability to satisfy stated or implied needs.

    QUALITY ASSURANCE MANAGEMENT SYSTEM: All the planned and systematic actions
    necessary to provide adequate confidence in the product to satisfy given
    requirements for quality.
<PAGE>
 
- --------------------------------------------------------------------------------

4.0 CORPORATE PROFILE
- ----------------------

    P-Com Inc. was founded in August 1991, for the express purpose of
    developing, manufacturing and marketing millimeter wave radio products for
    the telecommunications industry. These products meet a critical need for
    high quality, cost effective, digital transmission in short distance
    applications. In general, the P-Com management team is dedicated to removing
    the gap that exists between the products that are currently available and
    the needs of the market.

    P-Com millimeter wave radio products meet the crucial requirement of
    minimizing the customer's "cost of ownership". The design philosophy that
    governs all P-Com product development decisions is one that results in a
    product that is low in cost, high in reliability and simple to install and
    maintain. Given the competitive nature of the telecommunications service
    industry, these attributes play a key role in the successful and profitable
    operation of a customers telecommunications network.

4.1 COMPANY MISSION

    To design, develop and manufacture high quality radio transmission products
    for the worldwide wireless telecommunications market.

                              [MAP APPEARS HERE]
<PAGE>
 
- --------------------------------------------------------------------------------

                           QUALITY ASSURANCE MANUAL

5.0  ORGANIZATION
- -----------------

     The Company organization and lines of authority are detailed in Figure 1.

                             [CHART APPEARS HERE]
<PAGE>
 
- --------------------------------------------------------------------------------

6.0   MANAGEMENT RESPONSIBILITY
- -------------------------------

      The Company's organization is designed to provide effective direction,
      communication and management to meet the requirements defined in the
      Qualify Policy Statement.

6.1   PRESIDENT and CHIEF EXECUTIVE OFFICER (CEO)

      The President and CEO holds responsibility within the Company to
      formulate, in association with the key Executives, overall Company policy.
      He is responsible for the development and implementation of strategies for
      the control of all aspects of the business through designated Company
      personnel. The President shall be deputized Quality Assurance Manager in
      his absence.

6.2   EXECUTIVE VICE PRESIDENT and CHIEF TECHNICAL OFFICER (CTO)

      Reporting to the President of the Company, the Executive Vice-President
      has overall responsibility for the introduction of advanced technologies
      into the product, business development and strategic business alliance
      activities.

6.3   QUALITY ASSURANCE MANAGER

      The Quality Assurance Manager is the management representative reporting
      to the President and is responsible for ensuring full implementation and
      maintenance of the ISO 9001 quality system and the internal auditing
      required to verify its effectiveness. In addition to these
      responsibilities, he has issuing and revision control of the Company's
      Qualify Assurance Manual and related Quality Assurance Procedures (QAP's).

6.3.1 SENIOR QUALITY ENGINEER

      The Senior Quality Engineer reporting to the Quality Assurance Manager
      develops and initiates standards and methods for inspection, testing, and
      evaluation of materials and products. The Senior Quality Engineer also
      directs Inspectors engaged in product inspection and tabulating data
      concerning materials, product, or process quality and reliability. In
      addition, duties include maintaining the procedures for disposition of 
      non-conforming materials and product in conjunction with the appropriate
      corrective action follow-up.

6.4   VICE PRESIDENT (V.P.), OPERATIONS

      Reporting to the President of the Company, the Operations V.P. is
      responsible for organizing and introducing the product manufacturing
      strategy and manufacturing control systems combined with providing
      services and facilities for the Company's operation.

6.4.1 PROGRAM MANAGER

      Reporting to the Operations V.P. the Program Manager is responsible for
      providing technical support for other Company functions and creating a
      Master Design Schedule to satisfy the Market Requirements Specification
      and the business objectives as defined by senior management. The Program
      Manager also identifies critical issues and expediting improvements
      through staff meetings and design reviews with consideration to estimated
      parts and labor costs.
<PAGE>
 
- --------------------------------------------------------------------------------

6.4.2  PRODUCTION MANAGER

       Reporting to the Operations V.P. the Production Manager prepares
       operational schedules and coordinates manufacturing activities to ensure
       production and quality of products. Other responsibilities include
       planning production operations, establishing priorities and sequences for
       manufacturing products.

6.4.3  MATERIALS MANAGER

       Reporting to the Operations V.P. the Materials Manager is responsible for
       directing and coordinating the purchasing and distribution of components
       for the design and manufacture of products, capital equipment, and
       liaison with arranging contracts with suppliers and subcontractors.

6.5    SENIOR VICE PRESIDENT (VP), MARKETING & SALES

       Reporting to the President of the Company, the Marketing V.P. is
       responsible for developing the customer base and obtaining sales orders
       through marketing and sales strategy action plans. Other responsibilities
       include communicating the Company's corporate image in the market place
       while defining the market requirements for use by design engineering. He
       also provides technical publications, operation manuals, training
       materials and seminars for existing or potential customers.

6.5.1  MARKETING MANAGER

       Reporting to the Marketing & Sales V.P., the Product Marketing Manager is
       responsible for: a) product definition to Engineering based upon customer
       inputs, competitive research, industry standards and cost targets, b)
       corporate and product promotional literature, trade shows, public
       relations, customer demonstrations/presentations and sales support
       (assistance in proposal generation).

6.5.2  DIRECTOR OF SALES

       Reporting to the Marketing & Sales V.P., the Director of Sales is
       responsible for expanding the customer base, developing the Marketing
       Plan, obtaining sales orders, and meeting the revenue objectives of the
       corporation. Other responsibilities include ensuring customer
       satisfaction, relaying customer requests for product improvement and
       customer support functions of the corporation. The Director of Sales acts
       as a liaison between the customer and the corporation.

6.6    VICE PRESIDENT (V.P.), FINANCE/CONTROLLER

       Reporting to the President of the Company, the Finance V.P. is
       responsible for preparation of the Company's assets. Other
       responsibilities include management of Human Resources and Administrative
       functions.

6.7    VICE PRESIDENT (V.P.), ENGINEERING

       Reporting to the President, the Engineering V.P. is responsible for
       planning, budgeting, and managing the technical resources for the
       Company. Responsibilities also include technical direction for the
       Company, and organizing the engineering team to insure the technical
       integrity of products developed and that the requirements as defined by
       Marketing are satisfied.

6.7.1  DIRECTOR, MICROWAVE ENGINEERING

       Reporting to the Engineering V.P., the Microwave Engineering Director is
       responsible for managing a team of design engineers, technicians and
       consultants that provide all the microwave circuit designs and associated
       system interfaces including all the required documentation and control
       procedures.
<PAGE>
 
- --------------------------------------------------------------------------------

6.7.2  DIRECTOR, SIGNAL PROCESSING (SP) ENGINEERING

       Reporting to the Engineering V.P., the SP Engineering Director is
       responsible for managing a team of design engineers, technicians and
       consultants that provide all the SP electronics circuit designs and
       associated system interfaces including all the required documentation and
       control procedures.

7.0    QUALITY SYSTEM
- ----------------------

       The Quality System within the Company is based on a four tier
       documentation system composed of the following.

       . Level 1, Quality Assurance Manual
       . Level 2, Quality Assurance Procedures (QAP's)    
       . Level 3, Company Standards and Procedures        
       . Level 4, Industrial Standards and Database        

7.1    LEVEL 1 

       The Quality Assurance Manual describes in outline form the Management's
       organization and the quality related systems in operation within the
       Company to meet the requirements of ISO 9001:1987. It assists the
       customer in making an assessment of our ability to meet the specified
       quality assurance requirements.

7.2    LEVEL 2

       The systems outlined in the Quality Assurance Manual are enforced by
       separate Quality Assurance Procedures (QAP's) which describe the
       operational procedures of the related systems and define the responsible
       personnel and the objective evidence generated for substantiation.

       The QAP's are confidential to the Company and not for general
       distribution. However, at the discretion of the Company President, they
       may be made available for review by the customer.

7.3    LEVEL 3

       The QAP's are supported by a number of related non-product design
       documents such as Company Standards and Procedures that contain details
       describing the administrative system, such as how to conduct a Design
       Review meeting.

       Separate from Company Standards and Procedures are the product design
       documents describing tasks or work instructions that are in direct
       support of the product. such as a Test Procedure.

       Both non-product design and product design documents are confidential to
       the Company and are not for general distribution. However, at the
       discretion of the Company President, they may be made available for
       review by the customer.

7.4    LEVEL 4

       Level four documents are industrial engineering standards, design rules
       or Customer documents that form reference materials as a database
       supporting internal Company Standards and Procedures.
<PAGE>
 
                           QUALITY ASSURANCE MANUAL               No: 03.70.001 
                                                                  Rev: E        
                                                                  Date: 3-94    
                                                                  Page: 11 of 18
                                                                             
- --------------------------------------------------------------------------------

8.0     PROCEDURE SUMMARY
- -------------------------

        The following sections give a brief overview of each QAP that describes
        in detail the operational procedures of the related systems in support
        of ISO 9001 :1987. Next to each QAP title the corresponding document
        number is given in parenthesis as applicable.

8.1     MANAGEMENT REVIEW - QAP 4.1(03.70.002)

        It is company policy that the Quality System is reviewed by the
        President every six months. The review meeting is chaired by the
        President, and attended by the Vice Presidents, the Quality Assurance
        Manager, and any other personnel deemed necessary.

        The agenda includes a review, of actions taken from previous meetings,
        results of Internal Quality Audits, Non-conformance Reports, customer
        complaints and overall effectiveness of the Quality System.
 
        The minutes of the meeting and relevant documentation are retained by
        the Quality Assurance Manager.

8.2     CONTRACT REVIEW - QAP 4.3(03.70.003)

        It is the policy of P-Corn to document all inquiries, quotations,
        contracts, bid proposals, purchase orders and associated data.

        This documentation is reviewed to establish that requirements can be
        achieved and that all contracts and specifications are adequately
        defined. Deviations are resolved with the customer before processing and
        amendments to requirements are documented.

8.3     DESIGN CONTROL - QAP 4.4(03.70.004)

8.3.1   GENERAL

        P-Corn has established Standards and Procedures for control and
        verification of the product design to ensure that all specified contract
        requirements are satisfied.

8.3.2   DESIGN AND DEVELOPMENT PLANNING

        The Marketing Requirement Specification is used by the Program Manager
        to create a Master Design Schedule for the design project. Additional
        planning schedules are produced containing planning information for
        engineers and personnel from other functions. These are regularly
        reviewed, documented and the information circulated to all appropriate
        groups within the company.

        Quality Plans are written describing how the quality requirements of the
        contract are achieved.

        The Engineering V.P. has overall responsibility for the product design
        function and assigns design and verification activities to the
        Engineering Directors. The design resources consist of teams of
        specialist engineers and technicians with the necessary capital
        equipment.

8.3.3   DESIGN INPUT

        The Marketing Requirement Specification and specific customer contracts
        are the source documents for the design input requirements.
 
        Technical engineering specifications are developed for the product and
        for defined subdivisions of the product. Detail requirements are refined
        during the design process.
<PAGE>
 
                           QUALITY ASSURANCE MANUAL               No: 03.70.001
                                                                  Rev: E
                                                                  Date: 3-94
                                                                  Page: 12 of 18

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

8.3.3   CON'T

        The Product Design Specification defines the functionality of the
        product system and identifies the regulatory, customer specific,
        marketing, product safety, and engineering requirements.

8.3.4   DESIGN OUTPUT

        During the design process acceptance criteria are established for all
        appropriate product systems and sub-systems.

        Design calculations, system analysis, drawings, process instructions,
        test procedures, specifications, user manuals, etc., are generated as
        design outputs.

8.3.5   DESIGN VERIFICATION

        Design reviews are regularly held to control all aspects of the design
        process and are part of the Master Design Schedule.

        Verification that the design meets the specified contract requirements
        is conducted at various levels of product system. Testing against
        defined acceptance criteria and qualification programs are carried out.
 
8.3.6   DESIGN CHANGES

        P-Com has Standards and Procedures for the documentation and recording
        of design changes. The Engineering Change Order (ECO) system provides
        the method to evaluate, approve, and incorporate design changes into
        product design documentation.

8.3.7   PRODUCT RELEASE

        P-Com has Standards and Procedures defining the requirements for a
        uniform method of releasing a product and its technical documentation to
        manufacturing. The system also provides the method of controlling
        documentation during the engineering development cycle and construction
        of breadboard and/or prototype product.
 
8.4     DOCUMENT CONTROL - QAP 4.5(03.70.005)

84.1    DOCUMENT APPROVAL AND ISSUE

        P-Com operates Standards and Procedures for the registration, issue and
        circulation of all product design documents and non product documents
        including the Quality Manual, Quality Assurance Procedures, Company
        Standards, Procedures and Database.
 
        The Document Control department ensures that only the applicable issues
        of documents are used and obsolete documents are removed.

8.4.2   DOCUMENT CHANGE AND MODIFICATION

        Company Standards and Procedures provide for the initiation, evaluation,
        approval and implementation of all documentation changes. The Document
        Control department maintains a log of all proposed and approved ECO's
        for product design documents. Approval Sheets for changes of non product
        design documents are also maintained within Document Control.
<PAGE>
 
                           QUALITY ASSURANCE MANUAL               No: 03.70.001
                                                                  Rev: E
                                                                  Date: 3-94
                                                                  Page: 13 of 18

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

8.5     PURCHASING - QAP 4.6 (03.70.006)

8.5.1   GENERAL

        All purchasing related activities are conducted under controlled
        conditions which provide for objective assessment of all suppliers and
        ensure that purchasing information is correct before release to the
        supplier.

8.5.2   ASSESSMENT OF SUPPLIERS/SUBCONTRACTORS

        It is Company policy that, wherever possible, purchased material and
        subcontracted services are obtained from a company approved source.
     
        The Company maintains lists of approved sources and carries out
        supplier/sub-contractor evaluations to ensure conformance with
        requirements. Products purchased from non-approved sources are
        identified to the customer.

8.5.3   PURCHASING DATA

        All purchasing documents clearly describe the material and sub-
        contractor services ordered. Purchase Orders are reviewed and approved
        before release.

8.5.4   VERIFICATION OF PURCHASED PRODUCT/SERVICE

        When contractually specified by the customer, Quality Assurance
        requirements may be verified at P-Com by the customer. It is Company
        policy to provide for and assist those customers who require such
        verification.

8.6     PURCHASER SUPPLIED PRODUCT - QAP 4.7(03.70.007)

        Purchaser Supplied Product in this type of industry is typically
        equipment and/or documentation supplied to P-Com for design and
        production related work. The Marketing Manager is responsible for the
        care and control of documentation and the Quality Assurance Manager is
        responsible for equipment.

8.7     PRODUCT IDENTIFICATION AND TRACEABILITY - QAP 4.8(03.70.008)

        Components, printed circuit assemblies (PCA's), modules, and top
        assemblies used to produce the product shall be assigned unique part
        numbers. All of these shall be physically marked with their
        corresponding part numbers and revision where practical using a
        permanent method. In the case of purchased off the shelf components and
        size limitations, the storage or handling container shall be marked with
        the corresponding part number and revision.

        PCA's, modules, and top assemblies used to produce the product are
        assigned and indelibly marked with serial numbers. Records of the serial
        numbers used for the final product assembly are maintained.

        Components are excluded from individual serial number assignments except
        when deemed necessary by the Design department for critical applications
        requiring source lot traceability. These components are identified on
        purchase documentation such as Source Control Drawings and Specification
        Control Documents, drawings/schematics, and Bills of Material.
<PAGE>
 
                           QUALITY ASSURANCE MANUAL               No: 03.70.001
                                                                  Rev: E
                                                                  Date: 3-94
                                                                  Page: 14 of 18

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

8.8     PROCESS CONTROL - QAP 4.9(03.70.009)

        GENERAL

        The company ensures that the procedures that control the planning and
        operation of the manufacturing process are implemented. This is
        accomplished through documented work instructions and appropriate
        equipment for process, assembly and test.

        Product quality standards are maintained in accordance with industrial
        reference standards, codes of practice, Quality Plans and contract
        specified requirements.

8.8.1   SPECIAL PROCESSES

        There are no special processes.

8.9     INSPECTION AND TESTING - QAP 4.10(03.70.010)

8.9.1   RECEIVING INSPECTION AND TESTING

        All incoming materials are checked for compliance with the purchase
        order detail. Any damaged or incorrect materials are identified,
        segregated and processed using formal control procedures. Incoming
        material released for urgent purposes is identified and recorded in
        accordance with formal positive recall procedures.

8.9.2   IN-PROCESS INSPECTION AND TESTING

        At defined stages of the process and assembly operation, the product is
        identified, inspected and tested to establish conformance to documented
        specified requirements.

        Product is not progressed until satisfactorily inspected and tested
        except when released under positive recall procedures.

        Non-conforming product is identified and segregated in accordance with
        formal procedures.

8.9.3   FINAL INSPECTION AND TESTING

        Inspection and testing of the finished product is completed in
        accordance with the Quality Plan or documented procedures to verify
        conformance to the contract specified requirements.

        All necessary data and release documentation is made available before
        dispatch.

8.9.4   INSPECTION AND TEST RECORDS

        All inspection records are retained for manufactured products indicating
        acceptance to defined criteria.

8.10    INSPECTION, MEASURING AND TEST EQUIPMENT - QAP 4.11 (03.70.011)

        The Company operates a system for ensuring that inspection, measuring
        and test equipment used to determine the conformance of product to
        contract specified requirements are periodically calibrated, serviced
        and adjusted to maintain the accuracy to required limits.

        Calibration system and records are maintained in compliance to
        applicable national standards.
<PAGE>
 
                           QUALITY ASSURANCE MANUAL               No: 03.70.001
                                                                  Rev: E
                                                                  Date: 3-94
                                                                  Page: 15 of 18

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

8.11    INSPECTION AND TEST STATUS - QAP 4.12(03.70.012)

        The inspection and test status of product during the process and
        assembly stages of the operation is identified by unique routing card.
 
        A unique routing card is provided for each defined module, subassembly
        or product recording its progress through the manufacturing process and
        its conformance to inspection and tests performed.

        The Quality Assurance Manager is responsible for the release of
        conforming product.

8.12    CONTROL OF NON-CONFORMING PRODUCT - QAP 4.13(03.70.013)

        Incoming material, work in progress, and finished product that does not
        conform to specified requirements is prevented from inadvertent use by
        identification, segregation and disposition in accordance with
        documented procedures.

8.12.1  NON-CONFORMANCE REVIEW AND DISPOSITION

        In the documented procedures, the Quality Engineer is responsible for
        the review of Non-conformance Reports with other members of the Company
        Material Review Board to determine the appropriate disposition of non-
        conforming material and product.

        A Deviation Authorization may be requested from the customer for non-
        conforming product that is proposed for use or repair.

8.13    CORRECTIVE ACTION - QAP 4.14(03.70.014)

        The Company maintains documented procedures for the investigation and
        analysis of the cause for non-conforming material and product resulting
        in corrective actions to prevent recurrence.

8.14    HANDLING, STORAGE, PACKAGING AND DELIVERY - QAP 4.15(03.70.015)

8.14.1  GENERAL

        Procedures for handling, storage, packaging and delivery of material,
        work in process and finished product are maintained by the Company.

        Special Company Standards and Procedures establish the minimum
        requirements for electrostatic discharge control where sensitive
        electronic parts, assemblies or products are manufactured, assembled,
        tested, serviced, handled, packaged or stored.

8.14.2  HANDLING

        The Company handles all materials in such a manner as to prevent damage,
        deterioration or loss.

8.14.3  STORAGE

        Secure storage areas are provided and Company Standards and Procedures
        control the receipt and issuing of materials.

        Lists of materials requiring special storage conditions, or having a
        limited shelf life are maintained and controls applied to conform with
        requirements. The materials requiring special storage conditions are
        maintained in the appropriate environment and materials having limited
        shelf life are discarded in an approved manner when shelf life has
        expired. Material Safety Data Sheet regulations are applied for storage
        and handling of material. Lists of such materials are maintained.
<PAGE>
 
                           QUALITY ASSURANCE MANUAL               No: 03.70.001
                                                                  Rev: E
                                                                  Date: 3-94
                                                                  Page: 16 of 18

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

8.14.4  PACKAGING

        Company Standards and Procedures control the marking and packaging of
        the product to ensure conformance to specified contract requirements.

8.14.5  DELIVERY

        After final inspection and test, documented procedures provide for the
        protection of the product in stores and during delivery to the customer.

        Delivery documentation is provided and instructions are carried out in
        accordance with specified contract requirements.

8.15    QUALITY RECORDS - QAP 4.16 (03.70.016)

        The quality records identified in the Quality Assurance Procedures are
        filed and maintained by the applicable department and are under the
        jurisdiction of the Quality Assurance Manager for demonstration of the
        Quality System effectiveness.

        The records are retained for a minimum of five years or for a period
        specified by customer contract.

8.16    INTERNAL QUALITY AUDITS - QAP 4.17(03.70.017)

        All quality activities are subject to a planned and documented audit to
        verify compliance with the defined Quality System.

        Audits are conducted at predetermined intervals and are carried out by
        trained personnel under the control of the Quality Assurance Manager.

        The results of these audits are recorded and used to improve the
        effectiveness of the Quality System.

8.17    TRAINING - QAP 4.18 (03.70.018)

        The Company maintains procedures for identifying the training needs of
        all employees in performing assigned tasks and in increasing their
        quality awareness.

        Training records are held for each employee registering their education,
        experience and training requirements.

8.18    SERVICING

        The design philosophy of products manufactured by the Company precludes
        the need for regular maintenance. Servicing procedures are therefore not
        required.

8.19    STATISTICAL TECHNIQUES - QAP 4.20(03.70.019)

        The Company promotes the use of statistical tools and techniques in a
        systematic way to continually reduce variation in processes, products,
        and incoming materials. The Quality Assurance Manager is the Statistical
        Coordinator for the Company.
<PAGE>
 
                           QUALITY ASSURANCE MANUAL               No: 03.70.001
                                                                  Rev: E
                                                                  Date: 3-94
                                                                  Page: 17 of 18

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

LOCATION MAP
- ------------

                              [MAP APPEARS HERE]
<PAGE>
 
                           QUALITY ASSURANCE MANUAL               No: 03.70.001
                                                                  Rev: E
                                                                  Date: 3-94
                                                                  Page: 18 of 18

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

RECORD OF REVISIONS
- -------------------

<TABLE>
<CAPTION>
  REVISION          DESCRIPTION                                                 DATE           APPROVED 
                                                                                                  BY
- -----------------------------------------------------------------------------------------------------------
<S>                 <C>                                                         <C>            <C> 
     1              Initial draft.                                              10-12-92          KB
- -----------------------------------------------------------------------------------------------------------
     2              Adds expanded Procedure Summary pages 8 through 14.         11-06-92          KB
- -----------------------------------------------------------------------------------------------------------
     3              Introduced modified front sheet, organization chart,        12-17-92          KB
                    management responsibilities and procedure summary                         
- -----------------------------------------------------------------------------------------------------------
     A              Formal Release                                              01-08-93       K Bean
- -----------------------------------------------------------------------------------------------------------
     B              Update 5.0, 6.0                                             10-20-93       K Bean
- -----------------------------------------------------------------------------------------------------------
     C              Add ISO cross reference table and rewrite para. 8.19        11-18-93       K Bean
- -----------------------------------------------------------------------------------------------------------
     D              Add QAP 4.20 to Applicable Documents                        11-29-93       K Bean
- -----------------------------------------------------------------------------------------------------------
     E              Correct address page 1 & para. 1.2. Update Location Map     03-21-94       K Bean
                    page 17.
- -----------------------------------------------------------------------------------------------------------
</TABLE> 
<PAGE>
 
                          STANDARD/PROCEDURE APPROVAL

Standard/Procedure Number      03.70.001    Revision     E      Date   03-14-94


Standard/Procedure Title                      Quality Assurance Manual


As a minimum, the originator and the Director of the department issuing the
Standard/Procedure are the required approvals. For Company Standards, the
President must also approve.


Approvals:


/S/ Kenneth Bean         3-14-94                /S/ George Roberts       3/21/94
- ---------------------------------               --------------------------------
QA Manager                Date                  President                 Date
<PAGE>
 
                                 ATTACHMENT 3


                                    PRICES
                                        
<PAGE>
 
                                 ATTACHMENT 3


                                  ___________


     PRICES AND DISCOUNTS SCHEDULE FCA EUROPEAN COUNTRIES OR FCA CAMPBELL
                               (in U.S. Dollars)


1.  PRICES:    Prices are listed in the "Tel-Link Series List Prices" annexed to
               this Attachment (3 sheets)

2.  DISCOUNTS:  As per table herebelow

<TABLE> 
<CAPTION> 
- ---------------------------------------------------------------------------
LEVEL            TOTAL ANNUAL                 23GHZ      38GHZ      50GHZ
                   QUANTITY     
- ---------------------------------------------------------------------------
<S>      <C>                                  <C>       <C>         <C> 
- ----------------------------------------            
  1       101 less than or equal to  500        35%       35%       T B D
- ----------------------------------------
  2       501 less than or equal to 1000        41%     38.5%       T B D
- ----------------------------------------
  3      1001 less than or equal to 2000        45%     42.5%       T B D
- ----------------------------------------
  4      more than 2001                       47.5%       45%       T B D
- ----------------------------------------

- ---------------------------------------------------------------------------
</TABLE> 

  .  Price to be considered valid for the whole 1995
 
  .  Items 1, 2 and 8E1/16E1 capacity systems are inclusive of 
     items 4.6 (Link Manager Port) 
           4.8 (FEC)
           4.9 (4FSK modulator)
  .  Spare parts ordered together with main purchase order will entitle the same
     above discounts

  .  Items 5 and 6: no discounts


<PAGE>
 
               TEL-LINK SERIES LIST PRICES - E1 STANDARD RADIOS

<TABLE> 
<CAPTION> 
                                                                           Tel-Link 38              Tel-Link 23
Item   Description                                                         List Price               List Price
<S>    <C>                                                                 <C>                   <C> 
1      Non-Protected Terminal,
       48VDC input pwr,
       Antenna w/Pole Mount,
       Instal. Material & Manual:
                                                                           2-FSK, 30cm Ant.         4-FSK,80cm Ant.
1.1       3x64 Kb/s Capacity                                                    $12,230                  $13,715 See note 6.
1.2       1E1 Capacity                                                          $11,850                  $13,365
1.3       2E1 Capacity                                                          $12,450                  $14,010
1.4       4E1 Capacity                                                          $13,010                  $14,640
1.5       Universal- Capacity Only (1E1, 2E1, 4E1)                              $13,490                  $15,180

1.6       Universal- Capacity & Mod. (2- or 4-FSK)                              $13,990                  $15,680

2      Protected Terminal, Two Ant. Solution,
       -48VDC Input pwr,
       Antenna w/Pole Mount,
       Instal. Material & Manual:
                                                                           2-FSK, 90cm Ant.         4-FSK, 80cm Ant.
2.1       1E1 Capacity                                                          $25,910                  $28,880
2.2       2E1 Capacity                                                          $27,050                  $30,170
2.3       4E1 Capacity                                                          $28,170                  $31,430
2.4       Universal- Capacity Only (1E1, 2E1, 4E1)                              $29,130                  $32,510

2.5       Universal- Capacity & Mod. (2. or 4-FSK)                              $30,130                  $35,510

3      Spares
                                                                                2-FSK                    4-FSK
3.1    IDU-3x04 Kb/s                                                                             $3,950 See note 6.
3.2    IDU-1E1                                                                  $ 3,500                  $ 3,850
3.3    IDU-2E1                                                                  $ 4,070                  $ 4,480
3.4    IDU-4E1                                                                  $ 4,630                  $ 5,095
3.5    IDU- Universal- Capacity Only (1E1, 2E1, 4E1)                            $ 5,110                  $ 5,620

3.6    IDU- Universal- Capacaity & Mod. (2. or 4-FSK)                                            $5,620

3.7    PSS-1E1, 2E1 or 4E1 (Protected Terminals Only)                                            $2,150

3.8    ODU                                                                      $ 9,760                  $10,980
       (2 required per link)  

3.9    ODU Switch (Single Antenna Protection Option Only)                                        $1,980

3.10   30cm Antenna w/Pole Mount Hrdwr                                          $   450                  $   845
3.11   60cm Antenna w/Pole Mount Hrdwr                                          $   795                  $ 1,190

4      Terminal Options (Add to terminal price)        

4.1    +24/-24 VDC Input Pwr                                                                     $  745
4.2    Eng. Orderwire (EOW) w/handset & cord - Bridging                                          $  825
4.3    Eng. Orderwire (EOW) w/handset & cord - Point-to-Point Only                               $  275
4.4    Data Channel 1                                                                            $  590
4.5    Data Channel 2/MS8 Port                                                                   $  590
4.6    Link Manager Port                                                                         $  485
4.7    120 Ohm Bal. I/0                                                                          $  450
4.8    Forward Error Correction (FEC)                                                            $1,250
4.9    4-FSK Modulation                                                         $   500                      N/A
4.10   High Power Amplifier                                                         N/A                  $ 1,490
4.11   30cm Antenna (purchased with terminal)                                       N/A                    ($345)
4.12   60cm Antenna (purchased with terminal)                                   $   345                      N/A  
4.13   Single Antenna Protection (Prot. Terminals Only)                                          $2,950
</TABLE> 

                       Siemans-TS-E1 Rev. 1.0. 12/16/94             Page 1 of 3
<PAGE>
 
                 Tel-Link Series List Prices-E1 Standard Radios

<TABLE> 
<CAPTION> 
- ------------------------------------------------------------------------------------------------------------------------------  
- ------------------------------------------------------------------------------------------------------------------------------  
- ------------------------------------------------------------------------------------------------------------------------------  
                                                                   Tel-Link 38                          Tel-Link 23 
- ------------------------------------------------------------------------------------------------------------------------------
Item      Description                                              List Price                           List Price
- ------------------------------------------------------------------------------------------------------------------------------  
<S>       <C>                                                      <C>                 <C>              <C>  
- ------------------------------------------------------------------------------------------------------------------------------  
   5      Software Products                                                                                
- ------------------------------------------------------------------------------------------------------------------------------ 
- ------------------------------------------------------------------------------------------------------------------------------ 
 5.1      Link Manager                                                                   $4,900                   
- ------------------------------------------------------------------------------------------------------------------------------ 
 5.2      Network Manager                                                                TBD                      
- ------------------------------------------------------------------------------------------------------------------------------ 
- ------------------------------------------------------------------------------------------------------------------------------ 
- ------------------------------------------------------------------------------------------------------------------------------ 
   6      Miscellaneous                                                                                    
- ------------------------------------------------------------------------------------------------------------------------------ 
- ------------------------------------------------------------------------------------------------------------------------------ 
 6.1      Crimp Tool                                                                     $  100                    
- ------------------------------------------------------------------------------------------------------------------------------ 
 6.2      Test Cord- ODU AGC                                                             $   50                    
- ------------------------------------------------------------------------------------------------------------------------------ 
 6.3      Operations Manual                                                              $   75                   
- ------------------------------------------------------------------------------------------------------------------------------ 
 6.4      EOW Handset W/Cord                                                             $   40                    
- ------------------------------------------------------------------------------------------------------------------------------ 
 6.5      Digital Voltmeter                                                              $  220                    
- ------------------------------------------------------------------------------------------------------------------------------ 
 6.6      IDU-ODU Coax Cable (250 FT)                                                    $  550                    
- ------------------------------------------------------------------------------------------------------------------------------ 
 6.7      ODU Rem. Mount. KG (WG) not Incl.                                              $  390                    
- ------------------------------------------------------------------------------------------------------------------------------ 
 6.8      OUD Holsting Handle                                                            $  295                    
- ------------------------------------------------------------------------------------------------------------------------------ 
 6.9      Flexible Waveguide 30" (38G or 23G)                                               $  750                    
- ------------------------------------------------------------------------------------------------------------------------------ 
6.10      Protection Upgrade kit - Dual Antenna Solution                                 $2,150                     
- ------------------------------------------------------------------------------------------------------------------------------ 
6.11      Protection Upgrade kit - Single Antenna Solution                               $5,100
- ------------------------------------------------------------------------------------------------------------------------------ 
- ------------------------------------------------------------------------------------------------------------------------------ 
- ------------------------------------------------------------------------------------------------------------------------------ 
- -----------------------------------------------------------------------------------------------------------------------------  
Pricing Notes 
- -----------------------------------------------------------------------------------------------------------------------------  
- ------------------------------------------------------------------------------------------------------------------------------ 
1. All prices are in US$ and are F.O.B factory.
- ------------------------------------------------------------------------------------------------------------------------------ 
2. Payment terms are not 30 days unless otherwise specified.
- ------------------------------------------------------------------------------------------------------------------------------ 
3. All prices are subject to Terms and Conditions of the Agreement.
- ------------------------------------------------------------------------------------------------------------------------------ 
4. Volume Discounts are provided as in Table A.1.
- ------------------------------------------------------------------------------------------------------------------------------ 
5. O.D.U. IDU interconnect cable not included; recommend local purchase of Belden 913 RG? (FIG-8) cable or equivalent.
- ------------------------------------------------------------------------------------------------------------------------------ 
6. 3x64 KB/s products are always 2-FSK, 7 MHz channel bandwidth.
- ------------------------------------------------------------------------------------------------------------------------------ 
</TABLE> 

                                                                     Page 2 of 3
<PAGE>
 
LIST PRICES FOR TEL-LINK SERIES RADIOS
23 GHZ AND 38 GHZ
8E1 AND 16E1 CAPACITY SYSTEMS

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

The list prices, exclusive of any discounts, for the 23GHz and 38GHz radios, in
8E1 and 16E1 capacities are as shown below. List prices for all options are
provided as listed in the existing pricelist given to Siemens (Siemens-TS-E1,
Rev 1.0 dated 12/16/94):

23 GHZ RADIOS
23 GHz Radio, Non-Protected, Standard Power, 8E1 Capacity             $16,105
4FSK Modulation, 60cm Antenna w/Pole Mount, -48VDC input
w/Installation Kit and Operations Manual

23 GHz Radio, Non-Protected, Standard Power, 16E1 Capacity            $18,520
4FSK Modulation, 60cm Antenna w/Pole Mount, -48VDC input
w/Installation Kit and Operations Manual

23GHz Radio, Non-Protected, Standard Power, 8E1/16E1 Universal        $19,000
Capacity, 4FSK Modulation, 60cm Antenna w/Pole Mount, -48VDC
w/Installation Kit and Operations Manual

23 GHz Radio, Protected, Standard Power, 8E1 Capacity                 $34,960
4FSK Modulation, 60cm Antenna w/Pole Mount, -48VDC input
w/Installation Kit and Operations Manual

23 GHz Radio, Protected, Standard Power, 16E1 Capacity                $39,790
4FSK Modulation, 60cm Antenna w/Pole Mount, -48VDC input
w/Installation Kit and Operations Manual

23GHz Radio, Protected, Standard Power, 8E1/16E1 Universal            $40,750
Capacity, 4FSK Modulation, 60cm Antenna w/Pole Mount, 48VDC
w/Installation Kit and Operations Manual


38 GHZ RADIOS
38 GHz Radio, Non-Protected, Standard Power, 8E1 Capacity             $14,310
4FSK Modulation, 30cm Antenna w/Pole Mount, -48VDC input
w/Installation Kit and Operations Manual

38 GHz Radio, Non-Protected, Standard Power, 16E1 Capacity            $16,455
4FSK Modulation, 30cm Antenna w/Pole Mount, -48VDC input
w/Installation Kit and Operations Manual

38 GHz Radio, Non-Protected, Standard Power, 8E1/16E1 Universal       $16,935
Capacity, 4FSK Modulation, 30cm Antenna w/Pole Mount, -48VDC
w/Installation Kit and Operations Manual

38 GHz Radio, Protected, Standard Power, 8E1 Capacity                 $31,370
4FSK Modulation, 30cm Antenna w/Pole Mount, -48VDC input
w/Installation Kit and Operations Manual

38 GHz Radio, Protected, Standard Power, 16E1 Capacity                $35,660
4FSK Modulation, 30cm Antenna w/Pole Mount, -48VDC input
w/Installation Kit and Operations Manual

38 GHz Radio, Protected, Standard Power, 8E1/16E1 Universal           $36,620
Capacity, 4FSK Modulation, 30cm Antenna w/Pole Mount, -48VDC
w/Installation Kit and Operations Manual

                                                                     Page 3 of 3
<PAGE>
 
                                   FORECAST
<PAGE>
 
<TABLE> 
<CAPTION> 
    P_Com Tel-Link Forecast                                                                            Rev. 01       2/13/1995
- ------------------------------------------------------------------------------------------------------------------------------------
Item    Description                      Feb 95     Mar 95     Apr 95     May 95     Jun 95     Jul 95      Aug 95       TOTAL T/R
                                          23   38    23   38    23   38    23   38    23   38    23    38    23   38      23   38
<S>     <C>                              <C>        <C>        <C>        <C>        <C>        <C>         <C>          <C>   
- ------------------------------------------------------------------------------------------------------------------------------------
1.10    3X64 kb/s 1+0 (23 G)
- ------------------------------------------------------------------------------------------------------------------------------------
1.11    3X64 kb/s 1+0 (38 G)
- ------------------------------------------------------------------------------------------------------------------------------------
1.20    2Mb/s 1+0 (23 G)                                                              10         10          10           30
- ------------------------------------------------------------------------------------------------------------------------------------
1.21    2Mb/s 1+0 (38 G)                             12          4         10         14          4           4           48
- ------------------------------------------------------------------------------------------------------------------------------------
1.30    2x2Mb/s 1+0 (23 G)
- ------------------------------------------------------------------------------------------------------------------------------------
1.31    2x2Mb/s 1+0 (38 G)                                                 10         10                                  20 
- ------------------------------------------------------------------------------------------------------------------------------------
1.40    4x2Mb/s 1+0 (23 G)                           10         14         16         14         12           4           70  
- ------------------------------------------------------------------------------------------------------------------------------------
1.41    4x2Mb/s 1+0 (38 G)                                       6          4         10         10          10           40  
- ------------------------------------------------------------------------------------------------------------------------------------
1.50    Universal 1+0 (23G)                 2         2          2                                                         6
- ------------------------------------------------------------------------------------------------------------------------------------
1.51    Universal 1+0 (38G)                 2                                                                              2
- ------------------------------------------------------------------------------------------------------------------------------------
1.60    Univ.Cap. & Mod. 1+0 (23G)
- ------------------------------------------------------------------------------------------------------------------------------------
1.61    Univ.Cap. & Mod. 1+1 (38G)
- ------------------------------------------------------------------------------------------------------------------------------------
2.10    2Mb/s 1+1 (23G)
- ------------------------------------------------------------------------------------------------------------------------------------
2.11    2Mb/s 1+1 (38G)
- ------------------------------------------------------------------------------------------------------------------------------------
2.20    2x2Mb/s 1+1 (23G) 
- ------------------------------------------------------------------------------------------------------------------------------------
2.21    2x2Mb/s 1+1 (38G) 
- ------------------------------------------------------------------------------------------------------------------------------------
2.30    4x2Mb/s 1+1 (23G)                            16          8         20         32         32          32          140  
- ------------------------------------------------------------------------------------------------------------------------------------
2.31    4x2Mb/s 1+1 (38G)                                                                                     8            8
- ------------------------------------------------------------------------------------------------------------------------------------
2.40    Universal 1+1 (2/4) 23G             8         4                                                                   12  
- ------------------------------------------------------------------------------------------------------------------------------------
2.41    Universal 1+1 (2/4) 38G             4         4                                                                    8 
- ------------------------------------------------------------------------------------------------------------------------------------
2.50    Univ. Cap. & Mod. 1+1 (23G)
- ------------------------------------------------------------------------------------------------------------------------------------
2.51    Univ. Cap. & Mod. 1+1 (38G)
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE> 

All the configurations of items 1,2,7,8 include: 48v PSU, Antenna 
(30cm-38G/cm-23G) w/pole mount, link manager port, FEC, 4 FSK modulation, inst. 
material and manual

<PAGE>
 
     P_Com Tel-Link Forecast                                   Rev. 01 2/13/1995

<TABLE> 
<CAPTION> 
<S>                                     <C>          <C>          <C>         <C>         <C>         <C>        <C>      <C> 
- ------------------------------------------------------------------------------------------------------------------------------------
    ITEM  DESCRIPTION                   Feb 95       Mar 95       Apr 95      May 95      Jun 95      Jul 95     Aug 95  Total T/R
- ------------------------------------------------------------------------------------------------------------------------------------
     7.10 3x2Mb/s 1 + 0 (23G)                                                                                                  
- ------------------------------------------------------------------------------------------------------------------------------------
     7.11 3x2Mb/s 1 + 0 (38G)                                                                                                  
- ------------------------------------------------------------------------------------------------------------------------------------
     7.20 16x2Mb/s 1 + 0 (23G)                                                                                                 
- ------------------------------------------------------------------------------------------------------------------------------------
     7.21 16x2Mb/s 1 + 0 (38G)                                                                                                 
- ------------------------------------------------------------------------------------------------------------------------------------
     7.30 Universal 1 + 0 (8/16) 23G                                                                                           
- ------------------------------------------------------------------------------------------------------------------------------------
     7.31 Universal 1 + 0 (8/16) 38G                                                                                           
- ------------------------------------------------------------------------------------------------------------------------------------
     8.10 8x2Mb/s 1 + 1 (23G)                                                                                                  
- ------------------------------------------------------------------------------------------------------------------------------------
     8.11 8x2Mb/s 1 + 1 (38G)                                                                                                  
- ------------------------------------------------------------------------------------------------------------------------------------
     8.20 16x2Mb/s 1 + 1 (23G)                                           8                                   8                  
- ------------------------------------------------------------------------------------------------------------------------------------
     8.21 16x2Mb/s 1 + 1 (38G)                                                    5                                     5       
- ------------------------------------------------------------------------------------------------------------------------------------
     8.30 Universal 1 + 1 (8/16) 23G                                                                                           
- ------------------------------------------------------------------------------------------------------------------------------------
     8.31 Universal 1 + 1 (8/16) 38G                                                                                           
- ------------------------------------------------------------------------------------------------------------------------------------
                      TOTAL T/R           10   6       44    4      28    6     54   14     70   25     58   10   50   18 314  83
- ------------------------------------------------------------------------------------------------------------------------------------
     4.10 24V PSU                                                                                                             
- ------------------------------------------------------------------------------------------------------------------------------------
     4.20 EOW - Bridging                   2            8                                                                     
- ------------------------------------------------------------------------------------------------------------------------------------
     4.30 EOW   PT - PT                    4   4       28    2      24    6     35   14     54   22     38   10  38           
- ------------------------------------------------------------------------------------------------------------------------------------
     4.40 data channel                                                                                                        
- ------------------------------------------------------------------------------------------------------------------------------------
     4.70 120 OHM I/O                                                                                                         
- ------------------------------------------------------------------------------------------------------------------------------------
     4.01 H.P. Amplifier  23G               10           28         10            10                                           
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE> 

All the configurations of items 1,2,7, 8 include: 48v PSU, Antenna 
(30cm-38G/60cm-23G) w/pole mount, link manager port, FEC 4 FSK modulation,
inst. material and manual



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