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       # GATEWAY 2000
       
          TELEPATH 33.6 FAX MODEM
       
          Card Type              Modem                                   
          Chip Set               Unidentified                            
          I/O Options            Soundcard connector, serial ports (2    
                                 RJ-11), microphone jack, line in        
          Maximum Modem Rate     33.6Kbps                                
          Maximum Fax Rate       14.4Kbps                                
          Data Modulation        Bell 103A/212A, ITU-T V.21, V.22,       
          Protocol               V.22bis,V.32, V.32bis, V.34, V.FC       
          Fax Modulation         V.17, V.21, CH2, V.27ter, V.29          
          Protocol               
          Error                  MNP5, V.42, V.42bis                     
          Correction/Compression 
          Fax Class              Class I & II                            
          Data Bus               8-bit ISA                               
          Card Size              Half-length                             
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |      Function      |   Label   |    Function    |  Label   |
          |------------------------------------------------------------|
          | Cable connector to sound   |   CN1   | Microphone    | CN4 |
          | card                       |         | jack          |     |
          |----------------------------+---------+---------------+-----|
          | RJ-11 telephone in         |   CN2   | Line out      | CN5 |
          |----------------------------+---------+---------------+-----|
          | RJ-11 telephone out        |   CN3   |               |     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    SERIAL PORT ADDRESS                     |
          |------------------------------------------------------------|
          |      Setting       |    JP1/A    |   JP1/B    |   JP1/C    |
          |--------------------+-------------+------------+------------|
          |    COM1 (3F8h)     |   Closed    |   Closed   |   Closed   |
          |--------------------+-------------+------------+------------|
          |   í COM2 (2F8h)    |    Open     |   Closed   |   Closed   |
          |--------------------+-------------+------------+------------|
          |    COM3 (3E8h)     |   Closed    |    Open    |   Closed   |
          |--------------------+-------------+------------+------------|
          |    COM4 (2E8h)     |    Open     |    Open    |   Closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         INTERRUPT                          |
          |------------------------------------------------------------|
          |    Setting    | JP2/A  | JP2/B  | JP2/C  | JP2/D  | JP2/E  |
          |---------------+--------+--------+--------+--------+--------|
          |     IRQ2      | Closed |  Open  |  Open  |  Open  |  Open  |
          |---------------+--------+--------+--------+--------+--------|
          |    í IRQ3     |  Open  | Closed |  Open  |  Open  |  Open  |
          |---------------+--------+--------+--------+--------+--------|
          |     IRQ4      |  Open  |  Open  | Closed |  Open  |  Open  |
          |---------------+--------+--------+--------+--------+--------|
          |     IRQ5      |  Open  |  Open  |  Open  | Closed |  Open  |
          |---------------+--------+--------+--------+--------+--------|
          |     IRQ7      |  Open  |  Open  |  Open  |  Open  | Closed |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               MISCELLANEOUS TECHNICAL NOTES                |
          |------------------------------------------------------------|
          | A compatible sound card is necessary in order for the      |
          | Speakerphone functions to operate properly.                |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   SUPPORTED COMMAND SET                    |
          |------------------------------------------------------------|
          |                     Basic AT Commands                      |
          |------------------------------------------------------------|
          | AT, ‘+++’, ‘comma’, A/                                     |
          |------------------------------------------------------------|
          | A, B, E, F, H, O, P, R, T, V, X, Z                         |
          |------------------------------------------------------------|
          | &C, &D, &G, &P, &S, &T, &W, &X, &Y, &Z                     |
          |------------------------------------------------------------|
          |                        S Registers                         |
          |------------------------------------------------------------|
          | S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12,     |
          | S18, S25, S38                                              |
          |------------------------------------------------------------|
          |                                                            |
          |------------------------------------------------------------|
          |                      Special Commands                      |
          |------------------------------------------------------------|
          | #CID                                                       |
          |------------------------------------------------------------|
          | Note: See MHI Help File for full command documentation.    |
          +------------------------------------------------------------+
       
                            PROPRIETARY AT COMMAND SET
       
          +------------------------------------------------------------+
          |                            DIAL                            |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] D<#> [cmds]                       |
          |--------------+---------------------------------------------|
          | Description: | Dials telephone number according to any     |
          |              | modifiers included in the string            |
          |--------------+---------------------------------------------|
          | Note:        | Any combination of modifiers can be used to |
          |              | produce the desired dial functions in       |
          |              | sequence.                                   |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      DL      | Re-dial last number                         |
          |--------------+---------------------------------------------|
          |      DP      | Pulse dialing enabled                       |
          |--------------+---------------------------------------------|
          |      DR      | Answer mode enabled; originate mode         |
          |              | disabled following handshake initiation.    |
          |--------------+---------------------------------------------|
          |     DS=n     | Dial stored telephone number n              |
          |--------------+---------------------------------------------|
          |      DT      | Tone dialing enabled/Pulse dialing disabled |
          |--------------+---------------------------------------------|
          |      DW      | Dialing resumed following dial tone         |
          |              | detection                                   |
          |--------------+---------------------------------------------|
          |      D,      | Dialing paused for amount of time specified |
          |              | in S8 register                              |
          |--------------+---------------------------------------------|
          |      D!      | Flash function initiated. Modem commanded   |
          |              | to go off-hook for specified time before    |
          |              | returning on-hook.                          |
          |--------------+---------------------------------------------|
          |      D@      | Wait for Quite Answer function enabled.     |
          |              | Modem waits until a "quiet answer," a       |
          |              | ring-back signal followed by silence up to  |
          |              | the time specified in S7, is received prior |
          |              | to executing the rest of the dial string.   |
          |--------------+---------------------------------------------|
          |      D$      | Displays a list of dial commands            |
          |--------------+---------------------------------------------|
          |      D;      | Modem returned to idle state after dialing. |
          |              | The semicolon can only be placed at the end |
          |              | of the dial command.                        |
          |--------------+---------------------------------------------|
          |      D/      | Delays for 125 msec before proceeding with  |
          |              | dial string                                 |
          |--------------+---------------------------------------------|
          |      D#      | Extended touch tone pad tones               |
          |--------------+---------------------------------------------|
          |      D*      | Extended touch tone pad tones               |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     REPORT INFORMATION                     |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] In [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Displays information requested              |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      I0      | Reports four digit product code             |
          |--------------+---------------------------------------------|
          |      I1      | Reports ROM checksum                        |
          |--------------+---------------------------------------------|
          |      I2      | Reports RAM checksum                        |
          |--------------+---------------------------------------------|
          |      I3      | Reports product type                        |
          |--------------+---------------------------------------------|
          |      I4      | Reports current modem settings              |
          |--------------+---------------------------------------------|
          |      I5      | Reports nonvolatile memory settings         |
          |--------------+---------------------------------------------|
          |      I6      | Reports link diagnostics                    |
          |--------------+---------------------------------------------|
          |      I7      | Reports product configuration               |
          |--------------+---------------------------------------------|
          |     I11      | Reports link diagnostics                    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       SPEAKER VOLUME                       |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] Ln [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Controls speaker volume                     |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      L0      | Low volume setting                          |
          |--------------+---------------------------------------------|
          |      L1      | Low volume setting                          |
          |--------------+---------------------------------------------|
          |      L2      | Medium volume setting                       |
          |--------------+---------------------------------------------|
          |      L3      | Highest volume setting                      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        SPEAKER MODE                        |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] Mn [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Selects various speaker options             |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      M0      | Speaker disabled                            |
          |--------------+---------------------------------------------|
          |      M2      | Speaker enabled                             |
          |--------------+---------------------------------------------|
          |      M3      | Speaker enabled following dialing, then     |
          |              | disabled after carrier signal detected.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        RESULT CODES                        |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] Qn [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Enables modem to send result codes to the   |
          |              | DTE                                         |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      Q0      | Result code sending enabled                 |
          |--------------+---------------------------------------------|
          |      Q1      | Result code sending disabled                |
          |--------------+---------------------------------------------|
          |      Q2      | Result code sending enabled only in         |
          |              | Originate mode                              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       POWER ON/RESET                       |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] Yn [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Selects power on/reset default              |
          |              | configuration                               |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      Y0      | Profile 0 in NVRAM                          |
          |--------------+---------------------------------------------|
          |      Y1      | Profile 0 in NVRAM                          |
          |--------------+---------------------------------------------|
          |      Y2      | Generic template (&F0)                      |
          |--------------+---------------------------------------------|
          |      Y3      | Hardware flow control (&F1)                 |
          |--------------+---------------------------------------------|
          |      Y4      | Software flow control (&F2)                 |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         SOFT RESET                         |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] Zn [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Restores modem profiles previously saved in |
          |              | non-volatile RAM using the &W command.      |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      Z0      | Restore modem to profile selected by Y      |
          |              | command                                     |
          |--------------+---------------------------------------------|
          |      Z1      | Restore NVRAM setting 0                     |
          |--------------+---------------------------------------------|
          |      Z2      | Restore NVRAM setting 1                     |
          |--------------+---------------------------------------------|
          |      Z3      | Resets modem to factory default profile 0   |
          |              | (&F0)                                       |
          |--------------+---------------------------------------------|
          |      Z4      | Resets modem to factory default profile 1   |
          |              | (&F1)                                       |
          |--------------+---------------------------------------------|
          |      Z5      | Resets modem to factory default profile 2   |
          |              | (&F2)                                       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CODE SUBSET DISPLAY                     |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &An [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Enable or suppress the display of an        |
          |              | additional result code subsets.             |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     &A0      | Do not display ARQ result codes             |
          |--------------+---------------------------------------------|
          |     &A1      | Display ARQ result codes                    |
          |--------------+---------------------------------------------|
          |     &A2      | Display modulation indicators               |
          |--------------+---------------------------------------------|
          |     &A3      | Display error control                       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      SERIAL PORT RATE                      |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Bn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Sets serial port rate.                      |
          |--------------+---------------------------------------------|
          |     &B0      | Variable, follows connection rate           |
          |--------------+---------------------------------------------|
          |     &B1      | Fixed serial port rate                      |
          |--------------+---------------------------------------------|
          |     &B2      | Fixed in ARQ mode. Variable in non-ARQ mode |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  FACTORY DEFAULT PROFILE                   |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &F [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Sets values in active profile to values     |
          |              | found in the default profile                |
          |--------------+---------------------------------------------|
          |     &F0      | Generic template                            |
          |--------------+---------------------------------------------|
          |     &F1      | Hardware flow control template              |
          |--------------+---------------------------------------------|
          |     &F2      | Software flow control template              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 TRANSMIT DATA FLOW CONTROL                 |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &H [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Sets transmit data flow                     |
          |--------------+---------------------------------------------|
          |     &H0      | Flow control disabled                       |
          |--------------+---------------------------------------------|
          |     &H1      | Hardware flow control, CTS                  |
          |--------------+---------------------------------------------|
          |     &H2      | Software flow control, XON/XOFF             |
          |--------------+---------------------------------------------|
          |     &H3      | Hardware and software flow control          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 RECEIVE DATA FLOW CONTROL                  |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &I [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Sets transmit data flow                     |
          |--------------+---------------------------------------------|
          |     &I0      | Software flow control disabled              |
          |--------------+---------------------------------------------|
          |     &I1      | XON/XOFF signals to your modem and remote   |
          |              | system                                      |
          |--------------+---------------------------------------------|
          |     &I2      | XON/XOFF signals to your modem only         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      DATA COMPRESSION                      |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Kn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Enables/disables data compression           |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     &K0      | Data compression disabled                   |
          |--------------+---------------------------------------------|
          |     &K1      | Auto enable/disable                         |
          |--------------+---------------------------------------------|
          |     &K2      | Data compression enabled                    |
          |--------------+---------------------------------------------|
          |     &K3      | MNP5 compression disabled                   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       ERROR CONTROL                        |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Mn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Selects error control 1200bps and higher    |
          |--------------+---------------------------------------------|
          |   Command    |                    Mode                     |
          |--------------+---------------------------------------------|
          |     &M0      | Normal mode, error control disabled         |
          |--------------+---------------------------------------------|
          |     &M1      | Reserved                                    |
          |--------------+---------------------------------------------|
          |     &M2      | Reserved                                    |
          |--------------+---------------------------------------------|
          |     &M3      | Reserved                                    |
          |--------------+---------------------------------------------|
          |     &M4      | Normal/ARQ                                  |
          |--------------+---------------------------------------------|
          |     &M5      | ARQ mode                                    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                CONNECTION SPEED UPPER LIMIT                |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Nn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Sets required connection speed if &U is set |
          |              | to 0; otherwise, sets fastest allowed       |
          |              | connection speed.                           |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     &N0      | No maximum connect speed.                   |
          |--------------+---------------------------------------------|
          |     &N1      | Set maximum connect speed to 300bps.        |
          |--------------+---------------------------------------------|
          |     &N2      | Set maximum connect speed to 1200bps.       |
          |--------------+---------------------------------------------|
          |     &N3      | Set maximum connect speed to 2400bps.       |
          |--------------+---------------------------------------------|
          |     &N4      | Set maximum connect speed to 4800bps.       |
          |--------------+---------------------------------------------|
          |     &N5      | Set maximum connect speed to 7200bps.       |
          |--------------+---------------------------------------------|
          |     &N6      | Set maximum connect speed to 9600bps.       |
          |--------------+---------------------------------------------|
          |     &N7      | Set maximum connect speed to 12Kbps.        |
          |--------------+---------------------------------------------|
          |     &N8      | Set maximum connect speed to 14.4Kbps.      |
          |--------------+---------------------------------------------|
          |     &N9      | Set maximum connect speed to 16.8Kbps.      |
          |--------------+---------------------------------------------|
          |     &N10     | Set maximum connect speed to 19.2Kbps.      |
          |--------------+---------------------------------------------|
          |     &N11     | Set maximum connect speed to 21.6Kbps.      |
          |--------------+---------------------------------------------|
          |     &N12     | Set maximum connect speed to 24Kbps.        |
          |--------------+---------------------------------------------|
          |     &N13     | Set maximum connect speed to 26.4Kbps.      |
          |--------------+---------------------------------------------|
          |     &N14     | Set maximum connect speed to 28.8Kbps.      |
          |--------------+---------------------------------------------|
          |     &N15     | Set maximum connect speed to 31.2Kbps.      |
          |--------------+---------------------------------------------|
          |     &N16     | Set maximum connect speed to 33.6Kbps.      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                          RTS/CTS                           |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Rn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Selects RTS/CTS options                     |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     &R0      | Reserved                                    |
          |--------------+---------------------------------------------|
          |     &R1      | RTS is ignored by modem.                    |
          |--------------+---------------------------------------------|
          |     &R2      | Received data only on RTS. Controls DSR     |
          |              | operations                                  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                CONNECTION SPEED LOWER LIMIT                |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Un [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Sets slowest allowed connection speed if &N |
          |              | is set to 1 or higher.                      |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |    í &U0     | No minimum connect speed.                   |
          |--------------+---------------------------------------------|
          |     &U1      | Set minimum connect speed to 300bps.        |
          |--------------+---------------------------------------------|
          |     &U2      | Set minimum connect speed to 1200bps.       |
          |--------------+---------------------------------------------|
          |     &U3      | Set minimum connect speed to 2400bps.       |
          |--------------+---------------------------------------------|
          |     &U4      | Set minimum connect speed to 4800bps.       |
          |--------------+---------------------------------------------|
          |     &U5      | Set minimum connect speed to 7200bps.       |
          |--------------+---------------------------------------------|
          |     &U6      | Set minimum connect speed to 9600bps.       |
          |--------------+---------------------------------------------|
          |     &U7      | Set minimum connect speed to 12Kbps.        |
          |--------------+---------------------------------------------|
          |     &U8      | Set minimum connect speed to 14.4Kbps.      |
          |--------------+---------------------------------------------|
          |     &U9      | Set minimum connect speed to 16.8Kbps.      |
          |--------------+---------------------------------------------|
          |     &U10     | Set minimum connect speed to 19.2Kbps.      |
          |--------------+---------------------------------------------|
          |     &U11     | Set minimum connect speed to 21.6Kbps.      |
          |--------------+---------------------------------------------|
          |     &U12     | Set minimum connect speed to 24Kbps.        |
          |--------------+---------------------------------------------|
          |     &U13     | Set minimum connect speed to 26.4Kbps.      |
          |--------------+---------------------------------------------|
          |     &U14     | Set minimum connect speed to 28.8Kbps.      |
          |--------------+---------------------------------------------|
          |     &U15     | Set minimum connect speed to 31.2Kbps.      |
          |--------------+---------------------------------------------|
          |     &U16     | Set minimum connect speed to 33.6Kbps.      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       BREAK HANDLING                       |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Yn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Sets break handling                         |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     &Y0      | Destructive, but doesn’t sent break         |
          |--------------+---------------------------------------------|
          |     &Y1      | Destructive, expedited                      |
          |--------------+---------------------------------------------|
          |     &Y2      | Nondestructive, expedited                   |
          |--------------+---------------------------------------------|
          |     &Y3      | Reserved                                    |
          +------------------------------------------------------------+
       
                                                                        
       
                               S(STATUS) -REGISTERS
       
          +------------------------------------------------------------+
          |                  BIT-MAPPED REGISTER S13                   |
          |------------------------------------------------------------|
          | Format:      | AT [cmds] S13=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Range:       | 0-174                                       |
          |--------------+---------------------------------------------|
          | Unit:        | Bit-mapped                                  |
          |--------------+---------------------------------------------|
          | Description: | Controls echo, result codes and display,    |
          |              | dial mode, and answer/originate mode.       |
          |--------------+---------------------------------------------|
          | Bit  | Value |                  Function                   |
          |------+-------+---------------------------------------------|
          |  0   |     0 | Unidentified                                |
          |      |       |                                             |
          |      |     1 | Reset when DTR drops                        |
          |------+-------+---------------------------------------------|
          |  1   |     0 | Unidentified                                |
          |      |       |                                             |
          |      |     1 | Resets non-MNP transmit buffer from 1.5K to |
          |      |       | 128bytes                                    |
          |------+-------+---------------------------------------------|
          |  2   |     0 | Unidentified                                |
          |      |       |                                             |
          |      |     1 | Set backspace key to delete                 |
          |------+-------+---------------------------------------------|
          |  3   |     0 | Unidentified                                |
          |      |       |                                             |
          |      |     1 | DTR signals auto dial stored in NVRAM at    |
          |      |       | position 0                                  |
          |------+-------+---------------------------------------------|
          |  4   |     0 | Unidentified                                |
          |      |       |                                             |
          |      |     1 | Power on auto dial stored in NVRAM at       |
          |      |       | position 0                                  |
          |------+-------+---------------------------------------------|
          |  5   |     0 | Not used                                    |
          |      |       |                                             |
          |      |     1 | Not used                                    |
          |------+-------+---------------------------------------------|
          |  6   |     0 | Not used                                    |
          |      |       |                                             |
          |      |     1 | Not used                                    |
          |------+-------+---------------------------------------------|
          |  7   |     0 | Unidentified                                |
          |      |       |                                             |
          |      |     1 | Disconnect on escape code                   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  BIT-MAPPED REGISTER S15                   |
          |------------------------------------------------------------|
          | Format:      | AT [cmds] S15=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Range:       | 0-174                                       |
          |--------------+---------------------------------------------|
          | Description: | Bitmapped register setup.                   |
          |--------------+---------------------------------------------|
          | Bit  | Value |                  Function                   |
          |------+-------+---------------------------------------------|
          |  0   |     0 | Enable ARQ/MNP for V.22                     |
          |      |       |                                             |
          |      |     1 | Disable ARQ/MNP for V.22                    |
          |------+-------+---------------------------------------------|
          |  1   |     0 | Enable ARQ/MNP for V.22bis                  |
          |      |       |                                             |
          |      |     1 | Disable ARQ/MNP for V.22bis                 |
          |------+-------+---------------------------------------------|
          |  2   |     0 | Disable ARQ/MNP for V32/V.32bis             |
          |      |       |                                             |
          |      |     1 | Disable ARQ/MNP for V32/V.32bis             |
          |------+-------+---------------------------------------------|
          |  3   |     0 | Enable MNP handshake                        |
          |      |       |                                             |
          |      |     1 | Disable MNP handshake                       |
          |------+-------+---------------------------------------------|
          |  4   |     0 | Enable MNP level 4                          |
          |      |       |                                             |
          |      |     1 | Disable MNP level 4                         |
          |------+-------+---------------------------------------------|
          |  5   |     0 | Enable MNP level 3                          |
          |      |       |                                             |
          |      |     1 | Disable MNP level 3                         |
          |------+-------+---------------------------------------------|
          |  6   |     0 | Special MNP compatibility                   |
          |      |       |                                             |
          |      |     1 | Special MNP incompatibility                 |
          |------+-------+---------------------------------------------|
          |  7   |     0 | Enable V.42 detection phase                 |
          |      |       |                                             |
          |      |     1 | Disable V.42 detection phase                |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  TOUCH TONE DIALING TEST                   |
          |------------------------------------------------------------|
          | Format:      | AT [cmds] S16=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Range:       | 0-128                                       |
          |--------------+---------------------------------------------|
          | Unit:        | Bit-mapped register setup                   |
          |--------------+---------------------------------------------|
          | Description: | Bitmapped register setup.                   |
          |--------------+---------------------------------------------|
          | Bit  | Value |                  Function                   |
          |------+-------+---------------------------------------------|
          |  1   |     0 | Touch tone dialing test disabled            |
          |      |       |                                             |
          |      |     1 | Touch tone dialing test enabled             |
          |------+-------+---------------------------------------------|
          |  2   |     0 | Internal test pattern disabled              |
          |      |       |                                             |
          |      |     1 | Internal test pattern enabled               |
          |------+-------+---------------------------------------------|
          | 3-6  |     0 | Not used                                    |
          |      |       |                                             |
          |      |     1 | Not used                                    |
          |------+-------+---------------------------------------------|
          |  7   |     0 | Watchdog reset disabled                     |
          |      |       |                                             |
          |      |     1 | Watchdog reset enabled                      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      INACTIVITY TIMER                      |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format       | AT [cmds] S19=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Default:     | 0                                           |
          |--------------+---------------------------------------------|
          | Unit:        | 1 minute                                    |
          |--------------+---------------------------------------------|
          | Description: | Activates when there is no activity on the  |
          |              | phone line. Modem hangs up at time-out      |
          |------------------------------------------------------------|
          |      Note: S19=0 disables the timer and allows an          |
          |      indefinite duration.                                  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   MNP OR V.42 MODE DELAY                   |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format       | AT [cmds] S21=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Range:       | Unidentified                                |
          |--------------+---------------------------------------------|
          | Unit:        | 10ms                                        |
          |--------------+---------------------------------------------|
          | Description: | Sets the length of breaks sent from modem   |
          |              | to computer.                                |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                FLOW CONTROL CHARACTER - XON                |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S22=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Range:       | Unidentified                                |
          |--------------+---------------------------------------------|
          | Unit:        | ASCII                                       |
          |--------------+---------------------------------------------|
          | Description: | Sets the character used to represent XON    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               FLOW CONTROL CHARACTER - XOFF                |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S23=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Range:       | Unidentified                                |
          |--------------+---------------------------------------------|
          | Unit:        | ASCII                                       |
          |--------------+---------------------------------------------|
          | Description: | Sets the character used to represent XOFF   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         DTR DELAY                          |
          |------------------------------------------------------------|
          | Format       | AT [cmds] S25=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Unit:        | .01 second                                  |
          |--------------+---------------------------------------------|
          | Description: | Selects the duration that DTR must be       |
          |              | dropped so that the modem doesn’t interpret |
          |              | a random glitch as a DTR loss.              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  BIT-MAPPED REGISTER S27                   |
          |------------------------------------------------------------|
          | Format       | AT [cmds] S27=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Unit:        | Bit-mapped                                  |
          |--------------+---------------------------------------------|
          | Description: | Selects line modulation                     |
          |--------------+---------------------------------------------|
          | Bit  | Value |                  Function                   |
          |------+-------+---------------------------------------------|
          |  0   |     0 | Disables ITU-T modulation at 300bps for     |
          |      |       | overseas calls; in V.21 mode, the modem     |
          |      |     1 | answers both overseas and domestic calls    |
          |      |       | but only originates V.21 calls.             |
          |      |       |                                             |
          |      |       | Enables ITU-T modulation at 300bps for      |
          |      |       | overseas calls; in V.21 mode, the modem     |
          |      |       | answers both overseas and domestic calls    |
          |      |       | but only originates V.21 calls.             |
          |------+-------+---------------------------------------------|
          |  1   |     0 | Disables unencoded modulation in V.32bis    |
          |      |       | mode.                                       |
          |      |     1 |                                             |
          |      |       | Enables unencoded modulation in V.32bis     |
          |      |       | mode                                        |
          |------+-------+---------------------------------------------|
          |  2   |     0 | Enables V.32 modulation                     |
          |      |       |                                             |
          |      |     1 | Disables V.32 modulation                    |
          |------+-------+---------------------------------------------|
          |  3   |     0 | Enables 2100Hz answer tone to allow two     |
          |      |       | V.42 modems to attach more quickly          |
          |      |     1 |                                             |
          |      |       | Disables 2100Hz answer tone to allow two    |
          |      |       | V.42 modems to attach more quickly          |
          |------+-------+---------------------------------------------|
          |  4   |     0 | Disables V.23 fallback mode                 |
          |      |       |                                             |
          |      |     1 | Enables V.23 fallback mode                  |
          |------+-------+---------------------------------------------|
          |  5   |     0 | Enables V.32bis mode                        |
          |      |       |                                             |
          |      |     1 | Disables V.32bis mode                       |
          |------+-------+---------------------------------------------|
          |  6   |     0 | Not used                                    |
          |      |       |                                             |
          |      |     1 | Not used                                    |
          |------+-------+---------------------------------------------|
          |  7   |     0 | Software compatibility mode disabled        |
          |      |       |                                             |
          |      |     1 | Software compatibility mode enabled         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    ANSWER TONE DISABLE                     |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format       | AT [cmds] S28=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Range:       | 0-255                                       |
          |--------------+---------------------------------------------|
          | Unit:        | .10 second                                  |
          |--------------+---------------------------------------------|
          | Description: | Eliminates the V.32 answer tones for faster |
          |              | dialing = "0"                               |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 ANSWER MODE FALLBACK TIMER                 |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format       | AT [cmds] S29=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Range:       | Undentified                                 |
          |--------------+---------------------------------------------|
          | Unit:        | .10 seconds                                 |
          |--------------+---------------------------------------------|
          | Description: | Maximum duration of V.21/V.23 answer mode   |
          |              | fallback timer.                             |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 VOICE PLAYBACK AUDIO LEVEL                 |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format       | AT [cmds] S31=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Range:       | 0-255                                       |
          |--------------+---------------------------------------------|
          | Description: | Sets voice playback audio level.            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  BIT-MAPPED REGISTER S32                   |
          |------------------------------------------------------------|
          | Format:        | AT [cmds] S32=n [cmds]                    |
          |----------------+-------------------------------------------|
          | Range:         | Unidentified                              |
          |----------------+-------------------------------------------|
          | Description:   | Register setup for 33.6 speed modems      |
          |------------------------------------------------------------|
          |   Bit    |   Value   |              Function               |
          |----------+-----------+-------------------------------------|
          |    0     |         0 | V.8 call indicate disabled          |
          |          |           |                                     |
          |          |         1 | V.8 call indicate enabled           |
          |----------+-----------+-------------------------------------|
          |    1     |         0 | Disables V.8 mode                   |
          |          |           |                                     |
          |          |         1 | Enables V.8 mode                    |
          |----------+-----------+-------------------------------------|
          |    2     |         0 | Enables V.FC modulation             |
          |          |           |                                     |
          |          |         1 | Disables V.FC modulation            |
          |----------+-----------+-------------------------------------|
          |    3     |         0 | Enables V.34 modulation             |
          |          |           |                                     |
          |          |         1 | Disables V.34 modulation            |
          |----------+-----------+-------------------------------------|
          |    4     |         0 | Enables 33.6kbps support            |
          |          |           |                                     |
          |          |         1 | Disables 33.6kbps support           |
          |----------+-----------+-------------------------------------|
          |    5     |         0 | Enables X2 support                  |
          |          |           |                                     |
          |          |         1 | Disables X2 support                 |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  BIT-MAPPED REGISTER S33                   |
          |------------------------------------------------------------|
          | Format:        | AT [cmds] S33=n [cmds]                    |
          |----------------+-------------------------------------------|
          | Description:   | Register setup for 33.6 speed modems      |
          |------------------------------------------------------------|
          |   Bit    |   Value    |              Function              |
          |----------+------------+------------------------------------|
          |    0     |          0 | Enables 2400 symbol rate           |
          |          |            |                                    |
          |          |          1 | Disables 2400 symbol rate          |
          |----------+------------+------------------------------------|
          |    1     |          0 | Enables 2743 symbol rate           |
          |          |            |                                    |
          |          |          1 | Disables 2743 symbol rate          |
          |----------+------------+------------------------------------|
          |    2     |          0 | Enables 2800 symbol rate           |
          |          |            |                                    |
          |          |          1 | Disables 2800 symbol rate          |
          |----------+------------+------------------------------------|
          |    3     |          0 | Enables 3000 symbol rate           |
          |          |            |                                    |
          |          |          1 | Disables 3000 symbol rate          |
          |----------+------------+------------------------------------|
          |    4     |          0 | Enables 3200 symbol rate           |
          |          |            |                                    |
          |          |          1 | Disables 3200 symbol rate          |
          |----------+------------+------------------------------------|
          |    5     |          0 | Enables 3429 symbol rate           |
          |          |            |                                    |
          |          |          1 | Disables 3429 symbol rate          |
          |----------+------------+------------------------------------|
          |    6     |          0 | Not used                           |
          |          |            |                                    |
          |          |          1 | Not used                           |
          |----------+------------+------------------------------------|
          |    7     |          0 | Enables shaping                    |
          |          |            |                                    |
          |          |          1 | Disables shaping                   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  BIT-MAPPED REGISTER S34                   |
          |------------------------------------------------------------|
          | Format:        | AT [cmds] S34=n [cmds]                    |
          |----------------+-------------------------------------------|
          | Range:         | 0-255                                     |
          |----------------+-------------------------------------------|
          | Description:   | Disable/enable trellis encoding           |
          |------------------------------------------------------------|
          |   Bit    | Value |                Function                 |
          |----------+-------+-----------------------------------------|
          |    0     |     0 | Enable 8S-2D trellis encoding           |
          |          |       |                                         |
          |          |     1 | Disable 8S-2D trellis encoding          |
          |----------+-------+-----------------------------------------|
          |    1     |     0 | Enable 16S-4D trellis encoding          |
          |          |       |                                         |
          |          |     1 | Disable 16S-4D trellis encoding         |
          |----------+-------+-----------------------------------------|
          |    2     |     0 | Enable 32S-2D trellis encoding          |
          |          |       |                                         |
          |          |     1 | Disable 32S-2D trellis encoding         |
          |----------+-------+-----------------------------------------|
          |    3     |     0 | Enable 64S-4D trellis encoding          |
          |          |       |                                         |
          |          |     1 | Disable 64S-4D trellis encoding         |
          |----------+-------+-----------------------------------------|
          |    4     |     0 | Enable non-linear coding                |
          |          |       |                                         |
          |          |     1 | Disable non-linear coding               |
          |----------+-------+-----------------------------------------|
          |    5     |     0 | Enable TX level deviation               |
          |          |       |                                         |
          |          |     1 | Disable TX level deviation              |
          |----------+-------+-----------------------------------------|
          |    6     |     0 | Enable pre-emphasis                     |
          |          |       |                                         |
          |          |     1 | Disable pre-emphasis                    |
          |----------+-------+-----------------------------------------|
          |    7     |     0 | Enable pre-coding                       |
          |          |       |                                         |
          |          |     1 | Disable pre-coding                      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  BIT-MAPPED REGISTER S41                   |
          |------------------------------------------------------------|
          | Format       | AT [cmds] S41=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Range:       | Unidentified                                |
          |--------------+---------------------------------------------|
          | Unit:        | Bit-mapped                                  |
          |--------------+---------------------------------------------|
          | Description: | Selects ringing and speakerphone mode.      |
          |--------------+---------------------------------------------|
          | Bit  | Value |                  Function                   |
          |------+-------+---------------------------------------------|
          |  0   |     0 | Distinctive ringing disabled                |
          |      |       |                                             |
          |      |     1 | Distinctive ringing enabled                 |
          |------+-------+---------------------------------------------|
          | 2,1  |    00 | Full Duplex speakerphone                    |
          |      |       |                                             |
          |      |    11 | Half Duplex speakerphone mode               |
          +------------------------------------------------------------+
       
                                VOICE COMMAND SET
       
          +------------------------------------------------------------+
          |                       MODE SELECTION                       |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] #CLS=n [cmds]                     |
          |--------------+---------------------------------------------|
          | Description: | Selects which mode the modem will operate   |
          |              | in.                                         |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |    #CLS=0    | Modem will operate in data mode.            |
          |--------------+---------------------------------------------|
          |    #CLS=1    | Modem will operate in fax class I mode.     |
          |--------------+---------------------------------------------|
          |    #CLS=2    | Modem will operate in fax class II mode.    |
          |--------------+---------------------------------------------|
          |    #CLS=8    | Modem will operate in voice mode.           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        VOICE DEVICE                        |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] #VLS=n [cmds]                     |
          |--------------+---------------------------------------------|
          | Description: | Selects the I/O device for the DSP chip.    |
          |--------------+---------------------------------------------|
          | Note:        | This modem may not support all options      |
          |              | listed below. The #VLS? command will        |
          |              | display the available options.              |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |   í #VLS=0   | Telephone line and handset used for voice   |
          |              | I/O.                                        |
          |--------------+---------------------------------------------|
          |    #VLS=1    | Telephone handset used for voice I/O.       |
          |--------------+---------------------------------------------|
          |    #VLS=2    | Internal speaker only used for voice I/O.   |
          |--------------+---------------------------------------------|
          |    #VLS=3    | External microphone only used for voice     |
          |              | I/O.                                        |
          |--------------+---------------------------------------------|
          |    #VLS=4    | Telephone line and handset used for voice   |
          |              | I/O; internal speaker enabled.              |
          +------------------------------------------------------------+