GOOD NEWS FROM COMPUCOM

                       
               GOOD NEWS FROM COMPUCOM...9600 bps...$149



CompuCom is proud to announce two AFFORDABLE, multistandard high speed
modems.  The Storm(tm) is a dual protocol  high-speed modem supporting
two high-speed modem standards, CCITT v.32/v.42bis and CompuCom CSP,
along with Fax and Voice Mail. It is the first v.32 to provide this
capability...total communications capability. It costs an incredibly
low $389.  Those wishing v.32, v.42, v.42/bis and CSP modem functions
may purchase the Storm without the Fax and Voice mail option for only
$299.  A caller identification option is also available. The SpeedModem
Challenger(tm) adds v.32/bis for 300-14,400 bps modem speed, with data
speeds up to 57,600 bps with v.42/bis.  At $499 it is by far the lowest
cost V.32/bis modem available! 

The sysop price is $199 for the Storm and $299 for the Challenger. 
This pricing is available to qualified sysops, only.  It is on a first
qualified first shipped basis with priority given to sysops already in
CompuCom's sysop program.  The expected ship date is September 1991. 

The Champ and Combo are so popular that there was as much as an eight
week backlog, before production ramped sufficiently to cover the order
rate.  The new modems are expected to create an even greater backlog
over the next several months.  We encourage you to call and get your
order into the queue as soon as possible.  This is especially important
for sysops since only a few percent of our production will be allocated
to the sysop program. 
                                                                 
The Champ and Combo have reached new economies of scale, due to their
high sales volume. CompuCom's business strategy is AFFORDABLE high
speed modems...so, the savings are being passed on to you for an even
more successful product. 

As of July 15 1991 the Champ is priced at $149, an unbelievable price
for a true 9600 bps modem.  The SpeedModem Champ has become the de
facto commodity priced AFFORDABLE STANDARD for 9600 bps modems.  The
sysop price is now $99 for the Champ.  This price is available to
qualified sysops, only. It is on a first qualified first shipped basis. 
This product breadth and unprecedented pricing will undoubtably
accelerate the rapidly growing acceptance for CompuCom CSP protocol
within the BBS community.  Now sysops can have it all, with a low cost
modem on a single phone line. 


Call 800 ACT ON IT for more detail...(800) 228 6648


PRICING

SPEEDMODEM      DIRECT   SYSOP*    VOICE MAIL   EXTERNAL    CALLER ID
MODEL           PRICE    PROGM.    & FAX, ADD       ADD

CHAMP           $149     $99       NO           +$30        NO

COMBO           $269     $159      INCLUDED     +$30        NO
                                                                      *
STORM           $299     $199      +$90         +$40 (30)*  +199 (FREE)
                                                                      *
CHALLENGER      $499     $299      +$90         +$40 (30)*  +199 (FREE)

* Denotes Qualified Sysops Only


PRODUCT INFORMATION

CompuCom has two lines of AFFORDABLE high speed modems; multi-standard
modems supporting the CCITT standards including v.32, v.32bis, v.42,
v.42bis and starting at only $299, and Very Low Cost Proprietary high-
speed modems.

CompuCom commodity-priced Champ modems are designed to provide 9600 bps
capability to a large price-sensitive marketplace.  Starting at $149,
they are priced competitively with 2400 bps MNP modems.  They offer
2400 bps and MNP 5 compatibility with all modems and when connected to
another CompuCom SpeedModem they provide 9600 bps communications. The
Combo has all the modem features of the Champ in addition to fax and
voice mail. 

The v.32/v.42bis (300-9,600-38,400 bps) Storm and v.32bis/v.42bis (300-
14,400-57,600 bps) Challenger features fax send/receive, and voice mail
options.  They are also compatible at 9600 bps with CSP modems and
offer a caller ID option.  They are possibly the highest performance
CCITT modems available simultaneously with the lowest cost...quite a
feat!
 
Order lead-times on the Champ and Combo are now running at about one
week.  When production starts on the Storm and Challenger, in
September, the lead-times on the Combo and Champ will be pushed out
somewhat, hopefully no more than four to six weeks.  We can not predict
the lead-times on the Storm and Challenger, but we know it will require
several months for production to ramp to its expected order rate.

EXTERNAL SPEEDMODEMS ARE NOW AVAILABLE! 

VOICE MAIL

Voice mail is on schedule.  Barring any unforeseen problems we expect it
to be available by July 31 (our original projection).  It looks great
and has many very advanced features...answering machine, default switch
to modem if no voice present, voice mail boxes, audio-text type (tree)
functions, Manual & Auto Dialing, multiple outgoing messages for each
day/hours, fax command, terminal mode, dos error levels...much more!


LEADING SYSOPS AGREE!        What sysops say about the Champ and Combo. 

     
"We've tested (the SpeedModem) from London (to New York) and found we
get a more consistent 9600 bps connection than V.32 or the U.S. 
Robotics models provided.  I honestly believe its going to knock the
bottom out of the high speed modem market," 

                    Mike Sussell, Director of The Invention Factory BBS

"The CompuCom SpeedModem provides all the utility of a high quality
2400 bps modem, but it gives 9600 bps in the package.  With that, it is
priced below most modems that offer only the 2400 bps (MNP) speed...why
don't they buy a real 9600 bps modem that also does a good job at 2400
bps MNP-5?.  The Speedmodem is such a modem."

                                      Bob Mahoney, Sysop of EXEC PC BBS

"We've replaced all our 2400 bps lines with SpeedModems because they
deliver reliable 2400 bps and MNP-5 performance and provide our
subscribers with an affordable high-speed standard, too. 

              Kevin Behrens and Steve Williams, Directors of Aquila BBS

"We are getting more callers on our SpeedModem lines than our V.32
lines."     
                                   Mike Callaghan, Sysop of Hottips BBS     


"We have thoroughly tested the CompuCom SpeedModem and have found it to
be of high quality, achieving download speeds that rival those of other
manufacturers!  I think that everyone should do themselves a favor and
step up to high-speed modeming!"

                        Rusty Hardenbaugh, Sysop of Rusty 'n Edie's BBS


COMPUCOM SPEED PROTOCOL, CSP, THE COMMODITY-PRICED AFFORDABLE STANDARD

CSP is a proprietary 9600 bps protocol developed by CompuCom
Corporation.  At 960+ cps on archived files, it offers a true raw speed
of 9600 bps and is competitive in performance with v.32 technology.  It
costs as little as $149 and is the only commodity-priced high-speed
modem technology.  It fills a very important need and market segment
not met by any other product. Because of its low cost and large sales
volume it has become the de facto commodity-priced standard for a high-
speed modem. 



SYSOP PROGRAM

In the past few months hundreds of BBS have joined CompuCom's sysop
program; and, they are making CSP low cost, high-speed access available
to their users.  These boards include the largest BBSs anywhere,
Aquila, Canada Remote, Connect America, Exec PC, Invention Factory,
Rusty & Edie's...many more. 

This is only the beginning... keeping with CompuCom's commitment to
make high-speed modems affordable to everyone, CompuCom is making
sysops "can't refuse" offers on its new multistandard modems.  The
sysops are ecstatic about it.  Not only do they get high-performance
modems, they get them at the lowest cost ever offered for each modem
category.  Sysops are beginning to realize that their callers will
always choose the BBS which gives them AFFORDABLE high-speed
connections.  CompuCom's low cost SpeedModems make it possible. 
Sysops who have participated in our program so far have experienced an
increase in the number of callers, and in caller satisfaction.  Many
have reported that they are getting more callers on their CSP lines
than their v.32 lines. 

What they're excited about now, is that one low cost modem gives them
both universal CCITT compatibility, and their users, very low cost CSP,
9600 bps access on the same phoneline.  Everybody wins!  Furthermore,
many sysops would pay far more for the unique caller identification
option, but they get it FREE.  Overall sysop enthusiasm guarantees
broad support in the BBS community, for the low cost CSP standard. 
That means BBS users are no longer stuck at 2400 bps.  Now, they can
join the high-speed Top Guns without mortgaging their homes. 



CHALLENGER/STORM MODEM SERIES DESIGN OVERVIEW

The Challenger and Storm are very low cost a dual technology modems
supporting two high-speed modem standards, CCITT v.32/v.32bis and
CompuCom CSP.  Their design represents a significant departure from
conventional high speed modem design. 

Fig. 1 shows a typical v.32/v.42bis modem design. The digital signal
originates at the RS-232 port which is connected to a UART.  The UART
interfaces to a command and control microprocessor.  The data then
flows to a second microprocessor which implements protocol and error
correction functions.  Each of these two microprocessors have read only
memory, (ROM), and random access memory, (RAM), banks.

The signal then flows into the "black box" called the data pump. First,
an interface circuitry module connects the outside world to the digital
signal processing module.  The digital signal processing module is a
computationally intensely, super-fast computer.  It implements complex
math, communications algorithms on the digital data stream. The output
of this still a digital signal but its information content represents
an analog signal waveform.  The digital signal processing system then
feeds its output to the digital to analog convertor which produces an
analog waveform output.  The analog output then feeds a telephone
interface circuit which sends the signal down the telephone line.  The
distant modem signal input from the telephone line is sent to the modem
electronics in the reverse direction.  In this case it goes through an
analog to digital convertor, then on to the digital signal processor
module. 

The conventional design consists of several specialized processing
modules operating on a linear dataflow path from the computer to the
phoneline.  Each of these modules is optimized to perform a very
specialized function.  In a low end design, the microprocessors are
typically 8-bit CPUs with a very limited memory address range.  The
code is written in assembly language which is finely tuned both for its
specific function and to fit within the limited address range of the 8-
bit microprocessor.  The code is often written by a third party vendor
who provides only a black box solution to the modem manufacturer. (This
is very common with the protocol cpu module. Even complete v.32 modem
designs are available from third party vendors.)

The vast majority of manufacturers design with a third party data pump. 
The data pump is, for the most part, a black box. Its features and
functions are totally predefined by the third party vendor, for example
Rockwell or Thompson. The modem manufacturer has little flexibility in
terms of the features  the pump provides, and limited if any access to
the component modules (for example the data convertors) of the pump. 
Additionally all the code which makes up the brains of the data pump is
inaccessible to the modem manufacturer. 

In summary the modem is a set of finely tuned special functions. 
Modification is difficult because of the nature of assembly language
program maintainance and/or inaccessibility of the code. The overall
design is inflexible - making future expansion limited and/or very
costly. 


                             _______________      _______________           
                            |               |    |               |
                            |      ROM      |    |      ROM      |
                            |_______________|    |_______________|
                                    |                    |
          _____________      _______|_______      _______|_______
         |             |    | 8 BIT COMMAND |    |   PROTOCOL    |
RS232--->|    UART     |--->| & CONTROL CPU |--->|   8 BIT CPU   |---->
         |_____________|    |_______________|    |_______________|    |
                                    |                    |            |
                             _______|_______      _______|_______     |
                            |               |    |               |    |
                            |      RAM      |    |      RAM      |    |
                            |_______________|    |_______________|    |
                                                                      |
                                                                      |
                                                                      |
 <--------------------------------------------------------------------<
|
|
|     _________________________________________________________________
|    |                                                                 |
|    |   _____________      ________________      ___________________  |
|    |  |  INTERFACE  |    | DIGITAL SIGNAL |    | DIGITAL TO ANALOG | |
>--->|->|  CIRCUITRY  |--->|   PROCESSOR    |--->|  INPUT / OUTPUT   | |
     |  |_____________|    |________________|    |___________________| |
     |                                                     |           |
     |                           DATA PUMP                 |           |
     |_____________________________________________________|___________|
                                                           |
                                                           |
                                                       TELEPHONE
                                                       INTERFACE

                               Fig. 1
                         
               TYPICAL LOW END V.32/V.42BIS MODEM ARCHITECTURE





        _______________               ______________
       |               |             |              |
       |      ROM      |             |      RAM     |
       |_______________|             |______________|
               |                             |
               |__________         __________|
                          |       |
   ________________      _|_______|_      ___________________ 
  |  68000 16 BIT  |    | INTERFACE |    | DIGITAL TO ANALOG |
  |    CORE CPU    |--->| CIRCUITRY |--->|  INPUT / OUTPUT   |---->
  |________________|    |___________|    |___________________|    |
                          |       |                               |
                 _________|       |__________                 TELEPHONE       
                |                            |                INTERFACE
          ______|______               _______|________               
         |             |             | DIGITAL SIGNAL |       
RS232--->|    UART     |             |   PROCESSOR    |         
         |_____________|             |________________|

     
                                Fig. 2
      COMPUCOM STORM and CHALLENGER V.32/32bis V.42/42bis MODEM
                     TipTek(tm) ARCHITECTURE

                                                               
The Storm and Challenger designs, Fig 2, use a  Tightly Integrated
Processing Technology Architecture; TipTek.  It provides total access
to all the capability and functionality of the silicon while reducing
redundancy.  Since all the code which defines the product is
accessible, functionality can be added with relative ease. Instead of
two flea-power 8-bit microprocessors, the powerful 16-bit Motorola
68000 CPU provides a muscular modem platform.  The majority of the
programming is high level C code, thus the code is easy to maintain and
features are added easily.  Only time critical code (approximately 20%)
need be programmed in assembly.  The costly data pump is replaced by
CompuCom's own DSP technology, resulting in a considerable cost savings
and providing easy expandability.  Backed by an excellent engineering
team, this approach is powerful, flexible, and easily accommodates
added features. 

For example, echo canceling has been the weakest link in previous v.32
modem designs.  CompuCom's TipTek architecture provides considerably
more echo canceling muscle and finesse then the majority of current
v.32/32bis modem designs.  This design approach is not only very cost
effective, it is possibly the highest performance v.32/32bis modem
available today, regardless of cost. 


 
  Remember...If you aren't totally satisfied, you may return the
             SpeedModem in 30 days for a full product price refund! 
             See for yourself...CALL NOW



CompuCom Technical Achievements

First 2400 bps modem under $100, July 1988

Invented Dynamic Impedance Stabilization(tm), DIS(tm) January 1989

First 9600 bps modem under $300,   Combo,  September 1990

First 9600 bps modem under $200,   Champ,   March 1991

First 9600 bps modem under $150,   Champ, June 1991,


Coming up...

First Total Communications 9600 bps Modem, Fax, and Voice Mail,
                                                    September 1991

First dual technology v.32 and proprietary protocol modem under $300,
                                                    September 1991
                                                                       
First dual technology v.32 and proprietary protocol modem with Fax
                                         Voice Mail, September 1991
 
First v.32bis modem under $500.
                 September 1991





                              800 ACT ON IT
         
          (800) 228-6648, (408) 732-4500, Fax (408) 732-4570

       Latest information...CompuCom Support BBS (408) 738-4990

    CompuCom Corporation  1180-J Miraloma Wy.  Sunnyvale, CA 94086
     

ATTENTION SYSOPS: Please call for details on the CompuCom sysop pro-
gram. 

ATTENTION BBS USER: If your favorite BBS doesn't yet support the Speed-
Modem, upload this file to the BBS. Leave a message with the sysop re-
questing that he or she support this affordable high speed modem.  Also
provide us with the voice telephone number of the BBS.  We will tele-
phone, and introduce the sysop to our sysop program.  Thank-you !
 
   SPEEDMODEM, COMBO, CHAMP, Challenger, Storm DISmodem, DIS, Dynamic
   Impedance Stabilization, CSP, CompuCom Speed Protocol, TipTek, and
   CompuCom are trademarks of CompuCom Corporation.

   U.S. Robotics is a trademark of USRobotics, Inc.
   MNP is a trademark of Microcom Systems, Inc.
   Motorola is a trademark of Motorola, Inc.