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       # DIAMOND MULTIMEDIA SYSTEMS, INC.
       
          SUPRAFAX MODEM 288
       
          Card Type              Fax, Modem (synchronous/asynchronous)   
          Chip Set               Rockwell                                
          Maximum Data Rate      28.8Kbps                                
          Maximum Fax Rate       14.4Kbps                                
          Data Bus               External                                
          Fax Class              Class I & II                            
          Data Modulation        Bell 103/212A                           
          Protocol                                                       
                                 ITU-T V.21, V.22bis, V.23, V.32,        
                                 V.32bis, V.34                           
                                                                         
                                 Rockwell V.FC                           
          Fax Modulation         ITU-T V.17, V.21, V.21CH2, V.27ter,     
          Protocol               V.29                                    
          Error                  MNP5, MNP10, V.42, V.42bis              
          Correction/Compression 
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |       Function        | Label  |   Function    |   Label   |
          |------------------------------------------------------------|
          | Line out                  |   CN1    | DC power     | CN4  |
          |---------------------------+----------+--------------+------|
          | Line in                   |   CN2    | Power switch | SW1  |
          |---------------------------+----------+--------------+------|
          | RS-232/422                |   CN3    |              |      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DIAGNOSTIC LED(S)                      |
          |------------------------------------------------------------|
          | LED  | Color | Status |             Condition              |
          |------+-------+--------+------------------------------------|
          |  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   |
          |------+-------+--------+------------------------------------|
          | PWR  |  Red  |   On   |            Power is on             |
          |------+-------+--------+------------------------------------|
          | PWR  |  Red  |  Off   |            Power is off            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    ALPH-NUMERIC DISPLAY                    |
          |------------------------------------------------------------|
          | Display |                    Condition                     |
          |---------+--------------------------------------------------|
          |   OK    |                  Modem is ready                  |
          |---------+--------------------------------------------------|
          |   AA    |               Auto-answer enabled                |
          |---------+--------------------------------------------------|
          |   DI    |              Modem dialing a number              |
          |---------+--------------------------------------------------|
          |   RI    |                 Phone is ringing                 |
          |---------+--------------------------------------------------|
          |   CD    |  Carrier signal detected and modem is connected  |
          |---------+--------------------------------------------------|
          |   LP    |         LAPM error correction activated          |
          |---------+--------------------------------------------------|
          |   DC    |            Data compression activated            |
          |---------+--------------------------------------------------|
          |   V34   |         V.34 (non-asymmetric) connection         |
          |---------+--------------------------------------------------|
          |   R34   | Modem is receiving data. When a nn follows, this |
          |         |           indicates the receive speed.           |
          |---------+--------------------------------------------------|
          |   T34   |  Modem is transmitting data. When a nn follows,  |
          |         |        this indicates the transmit speed.        |
          |---------+--------------------------------------------------|
          |   VF    |      Modem is connected using V.FC protocol      |
          |---------+--------------------------------------------------|
          |   28    |           Modem connected at 28.8Kbps            |
          |---------+--------------------------------------------------|
          |   26    |           Modem connected at 26.4Kbps            |
          |---------+--------------------------------------------------|
          |   24    |    Modem connected at 24Kbps, if this number     |
          |         |             follows V34, T34 or R34              |
          |---------+--------------------------------------------------|
          |   216   |           Modem connected at 21.6Kbps            |
          |---------+--------------------------------------------------|
          |   192   |           Modem connected at 19.2Kbps            |
          |---------+--------------------------------------------------|
          |   168   |           Modem connected at 16.8Kbps            |
          |---------+--------------------------------------------------|
          |   144   |           Modem connected at 14.4Kbps            |
          |---------+--------------------------------------------------|
          |   120   |            Modem connected at 12Kbps             |
          |---------+--------------------------------------------------|
          |   96    |            Modem connected at 9600bps            |
          |---------+--------------------------------------------------|
          |   48    |            Modem connected at 4800bps            |
          |---------+--------------------------------------------------|
          |   24    |    Modem connected at 2400bps, if this number    |
          |         |         doesn’t follows V34, T34 or R34          |
          |---------+--------------------------------------------------|
          |   12    |            Modem connected at 1200bps            |
          |---------+--------------------------------------------------|
          |    3    |            Modem connected at 300bps             |
          |---------+--------------------------------------------------|
          |   RE    | Receive error, local modem asking to retransmit  |
          |         |                       data                       |
          |---------+--------------------------------------------------|
          |   TE    |    Transmission error, remote modem asking to    |
          |         |                   resend data                    |
          |---------+--------------------------------------------------|
          |   RT    |      Either modem has requested to retrain       |
          |---------+--------------------------------------------------|
          |   FX    |          Modem is connected in FAX mode          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   SUPPORTED COMMAND SET                    |
          |------------------------------------------------------------|
          |                     Basic AT Commands                      |
          |------------------------------------------------------------|
          | AT, ‘+++’, ‘comma’, A/                                     |
          |------------------------------------------------------------|
          | A, C, D, E, F, H, L, N, O, P, Q, R, S, T, U, V, W, Y, Z    |
          |------------------------------------------------------------|
          | &A, &B, &C, &G, &J, &K, &L, &P, &S, &T, &V, &W, &X, &Y, &Z |
          |------------------------------------------------------------|
          |                    Extended AT Commands                    |
          |------------------------------------------------------------|
          | \C, \E, \O, \Q, \T, \U, \V, \X, \Y, \Z                     |
          |------------------------------------------------------------|
          | %A, %TT                                                    |
          |------------------------------------------------------------|
          |                        S Registers                         |
          |------------------------------------------------------------|
          | S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12,     |
          | S18, S25, S26,                                             |
          |------------------------------------------------------------|
          | S38, S46, S48, S82, S86, S90, S91, S92, S95, S99, S108,    |
          | S109, S110                                                 |
          |------------------------------------------------------------|
          |                      Special Commands                      |
          |------------------------------------------------------------|
          | "H, "N, "O,-J, )M, +MS?                                    |
          |------------------------------------------------------------|
          | Note: See MHI Help File for full command documentation.    |
          +------------------------------------------------------------+
       
                            Proprietary AT Command Set
       
           See document SUPRAFAX MODEM 288I for a full command summary.