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       # MAXTECH CORPORATION
       
          14400BPS TURBOMODEM EXTERNAL
       
          Card Type              Modem (synchronous/asynchronous)        
          Chip Set               Unidentified                            
          Maximum Data Rate      14.4Kbps                                
          Data Bus               External                                
          Data Modulation        Bell 103/212A                           
          Protocol                                                       
                                 ITU-T V.21, V.22, V.22bis, V.32,        
                                 V.32bis                                 
          Error                  MNP5, V.42, V.42bis                     
          Correction/Compression 
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |       Function        | Label  |   Function    |   Label   |
          |------------------------------------------------------------|
          | Line in                   |   CN1    | DC power     | CN4  |
          |---------------------------+----------+--------------+------|
          | Line out                  |   CN2    | Power switch | SW1  |
          |---------------------------+----------+--------------+------|
          | RS-232/422                |   CN3    |              |      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |            Setting            | Label  |     Position      |
          |-------------------------------+--------+-------------------|
          | í Smart mode                  |  JP1   | Pins 2 & 3 closed |
          |-------------------------------+--------+-------------------|
          | Dumb mode                     |  JP1   | Pins 1 & 2 closed |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DIAGNOSTIC LED(S)                      |
          |------------------------------------------------------------|
          | LED | Color |  Status  |             Condition             |
          |-----+-------+----------+-----------------------------------|
          | TST |  Red  |    On    |   Normal operation or no error    |
          |     |       |          |             detected              |
          |-----+-------+----------+-----------------------------------|
          | TST |  Red  |   Off    |     No connection established     |
          |-----+-------+----------+-----------------------------------|
          | TST |  Red  | Blinking |    Error correction activated     |
          |-----+-------+----------+-----------------------------------|
          | HS  |  Red  |    On    | Modem is operating at 4800bps or  |
          |     |       |          |              faster               |
          |-----+-------+----------+-----------------------------------|
          | HS  |  Red  |   Off    | Modem is operating at slower than |
          |     |       |          |              4800bps              |
          |-----+-------+----------+-----------------------------------|
          | 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            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   SUPPORTED COMMAND SET                    |
          |------------------------------------------------------------|
          |                     Basic AT Commands                      |
          |------------------------------------------------------------|
          | AT, ‘+++’, ‘Comma’, A/                                     |
          |------------------------------------------------------------|
          | A, B, D, E, H, L, M, O, Q, S, V, X, Y, Z                   |
          |------------------------------------------------------------|
          | &C, &D, &G, &L, &M, &P, &R, &S, &T, &V, &W, &X, &Y, &Z     |
          |------------------------------------------------------------|
          |                    Extended AT Commands                    |
          |------------------------------------------------------------|
          | \A, \B, \C, \E, \G, \J, \K, \O, \Q, \U, \V, \X, \Y, \Z,    |
          | %A, %C                                                     |
          |------------------------------------------------------------|
          |                        S Registers                         |
          |------------------------------------------------------------|
          | S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12,     |
          | S14, S16, S18, S21, S22, S23, S25, S26, S27                |
          |------------------------------------------------------------|
          | Note: See MHI Help file for full command documentation.    |
          +------------------------------------------------------------+
       
                            Proprietary AT Command Set
       
          +------------------------------------------------------------+
          |                   AUTO-DIAL ON POWER-UP                    |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] %Pn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Controls how the modem reacts when powered  |
          |              | up.                                         |
          |------------------------------------------------------------|
          |    Command    |                  Function                  |
          |---------------+--------------------------------------------|
          |      %P0      | Disabled                                   |
          |---------------+--------------------------------------------|
          |      %P1      | Telephone number at memory location 0      |
          |               | dialed after modem is powered -up,         |
          |               | AT%P1&L0 are set to enable this feature.   |
          +------------------------------------------------------------+
       
       See: MAXTECH CORPORATION, 14400BPS TURBOMODEM INTERNAL document for
                             a full command summary.