SOUTH MOUNTAIN TELECOMMUNICATIONS
=================================

   SM-5743

   Card Type              Fax, Modem (asynchronous)               
   Chip Set               Unidentified                            
   Maximum Modem Rate     14.4Kbps                                
   Maximum Fax Rate       14.4Kbps                                
   Data Bus               External                                
   Fax Class              Class I & II                            
   Data Modulation        Bell 103A/212A                          
   Protocol                                                       
                          ITU-T V.21,V.22, V.22bis, V.32, V.32bis 
   Fax Modulation         ITU-T V.17, V.21 ch2, V.27ter, V.29     
   Protocol               
   Error                  MNP2-5, V.42, V.42bis                   
   Correction/Compression 
   Boot ROM               Not available                           

<gopher://bitreich.org/I/th99/t/S-T/53129-1.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            |
   |-------+--------+----------+--------------------------------|
   |  MR   |  Red   |    On    |          Power is on           |
   |-------+--------+----------+--------------------------------|
   |  MR   |  Red   |   Off    |          Power is off          |
   |-------+--------+----------+--------------------------------|
   |  TR   |  Red   |    On    |       DTR signal is high       |
   |-------+--------+----------+--------------------------------|
   |  TR   |  Red   |   Off    |       DTR signal is low        |
   |-------+--------+----------+--------------------------------|
   |  TD   |  Red   | Blinking |   Modem is transmitting data   |
   |-------+--------+----------+--------------------------------|
   |  TD   |  Red   |   Off    | Modem is not transmitting data |
   |-------+--------+----------+--------------------------------|
   |  RD   | Amber  | Blinking |    Modem is receiving data     |
   |-------+--------+----------+--------------------------------|
   |  RD   | Amber  |   Off    |  Modem is not receiving data   |
   |-------+--------+----------+--------------------------------|
   |  OH   |  Red   |    On    |       Modem is off-hook        |
   |-------+--------+----------+--------------------------------|
   |  OH   |  Red   |   Off    |        Modem is on-hook        |
   |-------+--------+----------+--------------------------------|
   |  CD   |  Red   |    On    |    Carrier signal detected     |
   |-------+--------+----------+--------------------------------|
   |  CD   |  Red   |   Off    |  Carrier signal not detected   |
   |-------+--------+----------+--------------------------------|
   |  AA   |  Red   |    On    |      Auto-answer enabled       |
   |-------+--------+----------+--------------------------------|
   |  AA   |  Red   |   Off    |      Auto-answer disabled      |
   |-------+--------+----------+--------------------------------|
   |  AA   |  Red   | Blinking |        Phone is ringing        |
   +------------------------------------------------------------+

                     Proprietary AT Command Set

   +------------------------------------------------------------+
   |                SUPPORTED STANDARD COMMANDS                 |
   |------------------------------------------------------------|
   |                     Basic AT Commands                      |
   |------------------------------------------------------------|
   | +++, 'comma', A/                                           |
   |------------------------------------------------------------|
   | A, B, D, H, L, M, N, O, Q, V, W, X, Z                      |
   |------------------------------------------------------------|
   | &D, &F, &G, &J, &K, &V, &W, &Y, &Z                         |
   |------------------------------------------------------------|
   |                    Extended AT Commands                    |
   |------------------------------------------------------------|
   | \A, \B, \G, \K, \V, \X, %A, %C, %E, %L, %Q                 |
   |------------------------------------------------------------|
   |                        S-Registers                         |
   |------------------------------------------------------------|
   | S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12,     |
   | S18, S25, S26, S46, S48                                    |
   |------------------------------------------------------------|
   |      Note: See MHI documentation for complete information. |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   UNIDENTIFIED COMMANDS                    |
   |------------------------------------------------------------|
   |          Command           |            Default            |
   |----------------------------+-------------------------------|
   |            S27             |         Unidentified          |
   |----------------------------+-------------------------------|
   |            S36             |               0               |
   |----------------------------+-------------------------------|
   |            S40             |              57               |
   |----------------------------+-------------------------------|
   |            S42             |               0               |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        CONNECT MODE                        |
   |------------------------------------------------------------|
   | Type:        | Immediate                                   |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] \Nn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Controls the type of connection the modem   |
   |              | will operate in                             |
   |------------------------------------------------------------|
   |       Command        |              Function               |
   |----------------------+-------------------------------------|
   |         \N0          | Normal mode enabled                 |
   |----------------------+-------------------------------------|
   |         \N1          | Direct mode enabled                 |
   |----------------------+-------------------------------------|
   |         \N2          | MNP reliable mode enabled           |
   |----------------------+-------------------------------------|
   |         i\N4         | Auto-reliable mode enabled          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    DISPLAY INFORMATION                     |
   |------------------------------------------------------------|
   | Type:        | Immediate                                   |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] In [cmds]                         |
   |--------------+---------------------------------------------|
   | Description: | Displays information requested about the    |
   |              | modem.                                      |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |      I0      | Displays product identification code.       |
   |--------------+---------------------------------------------|
   |      I1      | Displays ROM checksum.                      |
   |--------------+---------------------------------------------|
   |      I3      | Displays firmware revision.                 |
   |--------------+---------------------------------------------|
   |      I4      | Displays product features.                  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      INACTIVITY TIMER                      |
   |------------------------------------------------------------|
   | Type:        | Register                                    |
   |--------------+---------------------------------------------|
   | Format       | AT [cmds] S30=n [cmds]                      |
   |--------------+---------------------------------------------|
   | Default:     | 0                                           |
   |--------------+---------------------------------------------|
   | Range:       | 0-90                                        |
   |--------------+---------------------------------------------|
   | Unit:        | 1 minute                                    |
   |--------------+---------------------------------------------|
   | Description: | Maximum duration of DTE and DCE inactivity  |
   |              | allowed prior to initiating hang-up         |
   |              | process.                                    |
   |--------------+---------------------------------------------|
   | Note:        | S30=0 disables the timer and allows         |
   |              | indefinite inactivity.                      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    V.32 - AUTO-RETRAIN                     |
   |------------------------------------------------------------|
   | Type:        | Configuration                               |
   |--------------+---------------------------------------------|
   | Format:      | AT [cmds] &Bn [cmds]                        |
   |--------------+---------------------------------------------|
   | Description: | Controls auto-retrain function if poor line |
   |              | quality is detected                         |
   |--------------+---------------------------------------------|
   |   Command    |                  Function                   |
   |--------------+---------------------------------------------|
   |     &B0      | Auto-retrain disabled modem hangs-up        |
   |--------------+---------------------------------------------|
   |    i &B1     | Auto-retrain enabled if line quality is     |
   |              | poor                                        |
   |--------------+---------------------------------------------|
   |     &B2      | No hang-up, no auto-retrain                 |
   +------------------------------------------------------------+