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       # PRACTICAL PERIPHERALS, INC.
       
          PM144HC II
       
          Card Type              Modem (asynchronous)                    
          Chipset                Unidentified                            
          Maximum Data Rate      14.4Kbps                                
          Maximum Fax Rate       14.4Kbps                                
          Data Bus               8-bit ISA                               
          Fax Class              Class I & II                            
          Data Modulation        Bell 103A/212A                          
                                                                         
                                 ITU-T V.21, V.22, V.22bis, V.32,        
                                 V.32bis                                 
          Fax Modulation         V.17, V.27ter, V.29                     
          Error                  MNP5, V.42bis                           
          Correction/Compression 
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |       Function       | Label |      Function       | Label |
          |----------------------+-------+---------------------+-------|
          | Line in/out          |  CN1  | Line in/out         |  CN2  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               SERIAL PORT ADDRESS SELECTION                |
          |------------------------------------------------------------|
          |      Setting       |        E1         |        E3         |
          |--------------------+-------------------+-------------------|
          |    3F8h (COM1:)    |      Closed       |      Closed       |
          |--------------------+-------------------+-------------------|
          |    2F8h (COM2:)    |       Open        |      Closed       |
          |--------------------+-------------------+-------------------|
          |    3E8h (COM3:)    |      Closed       |       Open        |
          |--------------------+-------------------+-------------------|
          |    2E8h (COM4:)    |       Open        |       Open        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    INTERRUPT SELECTION                     |
          |------------------------------------------------------------|
          |  Setting   |    E4     |    E5     |    E6     |    E7     |
          |------------+-----------+-----------+-----------+-----------|
          |    IRQ2    |   Open    |   Open    |   Open    |  Closed   |
          |------------+-----------+-----------+-----------+-----------|
          |    IRQ3    |  Closed   |   Open    |   Open    |   Open    |
          |------------+-----------+-----------+-----------+-----------|
          |    IRQ4    |   Open    |  Closed   |   Open    |   Open    |
          |------------+-----------+-----------+-----------+-----------|
          |    IRQ5    |   Open    |   Open    |  Closed   |   Open    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                SUPPORTED STANDARD COMMANDS                 |
          |------------------------------------------------------------|
          |                     Basic AT Commands                      |
          |------------------------------------------------------------|
          | +++, ‘comma’, A/                                           |
          |------------------------------------------------------------|
          | A, D, E, H, L, M, N, Q, V, W, X, Y, Z                      |
          |------------------------------------------------------------|
          | &D, &F, &K, &V, &W, &Y, &Z                                 |
          |------------------------------------------------------------|
          |                        S-Registers                         |
          |------------------------------------------------------------|
          | S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12,     |
          | S18, S25, S30, S36, S38, S46, S48, S82                     |
          |------------------------------------------------------------|
          | S86, S95, S108, S109, S110                                 |
          |------------------------------------------------------------|
          |      Note: See MHI documentation for complete information. |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   UNIDENTIFIED COMMANDS                    |
          |------------------------------------------------------------|
          |           Command            |           Default           |
          |------------------------------+-----------------------------|
          |             S37              |              0              |
          |------------------------------+-----------------------------|
          |             S43              |              0              |
          +------------------------------------------------------------+
       
                            Proprietary AT Command Set
       
          See PRACTICAL PERIPHERALS, INC. PM144HC II (VER. 1) for a full
                                 command summary.