COMPUTER PERIPHERALS, INC.
==========================

   VIVA 24 EXTERNAL

   Modem Type                   Data (asynchronous)               
   Maximum Data Rate            2400bps                           
   Data Bus                     External                          
   Data Modulation Protocol     Bell 103A/212A                    
                                                                  
                                ITU-T V.21, V.22, V.22bis         
   Error Correction/Compression MNP5, V.42bis                     

<gopher://bitreich.org/I/th99/t/C-D/51613-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |     Purpose      | Location |      Purpose      | Location |
   |------------------+----------+-------------------+----------|
   | Line out         |   CN1    | DC power          |   CN4    |
   |------------------+----------+-------------------+----------|
   | Line in          |   CN2    | Power switch      |   SW1    |
   |------------------+----------+-------------------+----------|
   | RS-232/422       |   CN3    |                   |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DIAGNOSTIC LED(S)                      |
   |------------------------------------------------------------|
   | LED | Color |  Status  |             Condition             |
   |-----+-------+----------+-----------------------------------|
   | HS  |  Red  |    On    |   Modem is operating at 2400bps   |
   |-----+-------+----------+-----------------------------------|
   | HS  |  Red  |   Off    | Modem is operating at slower than |
   |     |       |          |              2400bps              |
   |-----+-------+----------+-----------------------------------|
   | AA  |  Red  |    On    |        Auto-answer enabled        |
   |-----+-------+----------+-----------------------------------|
   | AA  |  Red  |   Off    |       Auto-answer disabled        |
   |-----+-------+----------+-----------------------------------|
   | AA  |  Red  | Blinking |         Phone is ringing          |
   |-----+-------+----------+-----------------------------------|
   | CD  |  Red  |    On    |      Carrier signal detected      |
   |-----+-------+----------+-----------------------------------|
   | CD  |  Red  |   Off    |    Carrier signal not detected    |
   |-----+-------+----------+-----------------------------------|
   | OH  |  Red  |    On    |         Modem is off-hook         |
   |-----+-------+----------+-----------------------------------|
   | OH  |  Red  |   Off    |         Modem is on-hook          |
   |-----+-------+----------+-----------------------------------|
   | RD  |  Red  |    On    |      Modem is receiving data      |
   |-----+-------+----------+-----------------------------------|
   | RD  |  Red  |   Off    |    Modem is not receiving data    |
   |-----+-------+----------+-----------------------------------|
   | SD  |  Red  |    On    |    Modem is transmitting data     |
   |-----+-------+----------+-----------------------------------|
   | SD  |  Red  |   Off    |  Modem is not transmitting data   |
   |-----+-------+----------+-----------------------------------|
   | TR  |  Red  |    On    |        DTR signal is high         |
   |-----+-------+----------+-----------------------------------|
   | TR  |  Red  |   Off    |         DTR signal is low         |
   |-----+-------+----------+-----------------------------------|
   | MR  |  Red  | Blinking |      Loopback tests enabled       |
   |-----+-------+----------+-----------------------------------|
   | MR  |  Red  |    On    |            Power is on            |
   |-----+-------+----------+-----------------------------------|
   | MR  |  Red  |   Off    |           Power is off            |
   |------------------------------------------------------------|
   | Note: The LEDs are Icons.                                  |
   +------------------------------------------------------------+

                     Proprietary AT Command Set

           See document V1610 for a full command summary.