ZOOM TELEPHONICS, INC.
======================

   14400BPS FAXMODEM (EXTERNAL)

   Card Type              Fax, Modem (asynchronous)               
   Chip Set               Unidentified                            
   Maximum Data Rate      14.4Kbps                                
   Maximum Fax Rate       14.4Kbps                                
   Data Bus               External                                
   Fax Class              Class I & II                            
   Data Modulation        Bell 103/212A                           
   Protocol                                                       
                          ITU-T V.21, V.22A/B, V.22bis, V.23,     
                          V.32, V.32bis                           
   Fax Modulation         ITU-T V.17, V.21CH2, V.27ter, V.29      
   Protocol               
   Error                  MNP5, V.42, V.42bis                     
   Correction/Compression 

<gopher://bitreich.org/I/th99/t/U-Z/52024-1.png>
   

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

   +------------------------------------------------------------+
   |                     DIAGNOSTIC LED(S)                      |
   |------------------------------------------------------------|
   | LED  | Color |  Status  |            Condition             |
   |------+-------+----------+----------------------------------|
   | MSG  |  Red  |    On    |  Used by software applications.  |
   |      |       |          |        Faxes are waiting         |
   |------+-------+----------+----------------------------------|
   | MSG  |  Red  |   Off    |  Used by software applications.  |
   |      |       |          |      Faxes are not waiting       |
   |------+-------+----------+----------------------------------|
   | FAX  |  Red  |    On    |  Modem is connected in FAX mode  |
   |------+-------+----------+----------------------------------|
   | FAX  |  Red  |   Off    |  Modem is not connected in FAX   |
   |      |       |          |               mode               |
   |------+-------+----------+----------------------------------|
   | 14.4 |  Red  |    On    |   Modem connected at 14.4Kbps    |
   |      |       |          |      (V.32bis, or FAX mode)      |
   |------+-------+----------+----------------------------------|
   | 14.4 |  Red  |   Off    | Modem not connected at 14.4Kbps  |
   |      |       |          |      (V.32bis, or FAX mode)      |
   |------+-------+----------+----------------------------------|
   | V32  |  Red  |    On    |  Modem connected at 9600bps or   |
   |      |       |          |        4800bps or faster         |
   |------+-------+----------+----------------------------------|
   | V32  |  Red  |   Off    |  Modem not connected at 9600bps  |
   |      |       |          |       or 4800bps or faster       |
   |------+-------+----------+----------------------------------|
   | V42  |  Red  |    On    | Error correction (V.42) enabled  |
   |------+-------+----------+----------------------------------|
   | V42  |  Red  |   Off    | Error correction (V.42) disabled |
   |------+-------+----------+----------------------------------|
   |  DC  |  Red  |    On    |   Data compression (V.42bis or   |
   |      |       |          |          MNP5) enabled           |
   |------+-------+----------+----------------------------------|
   |  DC  |  Red  |   Off    |   Data compression (V.42bis or   |
   |      |       |          |          MNP5) disabled          |
   |------+-------+----------+----------------------------------|
   |  EC  |  Red  |    On    |  Error correction enabled using  |
   |      |       |          |    V.42 or MNP4 to send data     |
   |------+-------+----------+----------------------------------|
   |  EC  |  Red  |   Off    |    Error correction disabled     |
   |------+-------+----------+----------------------------------|
   |  FC  |  Red  |    On    |  Flow control enabled and data   |
   |      |       |          |         buffers not full         |
   |------+-------+----------+----------------------------------|
   |  FC  |  Red  |   Off    |  Flow control disabled or data   |
   |      |       |          |           buffers full           |
   |------+-------+----------+----------------------------------|
   |  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  |    On    |           Power is on            |
   |------+-------+----------+----------------------------------|
   |  MR  |  Red  |   Off    |           Power is off           |
   +------------------------------------------------------------+

                     Proprietary AT Command Set

           See document V2023 for a full command summary.