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       # ARCHTEK CORPORATION
       
          5634PCA-K
       
          Card Type              Modem/Fax card                          
          Chip Set               Cirrus Logic                            
          Maximum Modem Rate     56Kbps                                  
          Maximum Fax Rate       14.4Kbps                                
          Data Modulation        Bell 103A/212A                          
          Protocol                                                       
                                 ITU-T V.21, V.22, V.22bis, V.32,        
                                 V.32bis, V.34, K56flex                  
          Fax Modulation         ITU-T V.17, V.27ter, V.29, T.4, T.30    
          Protocol               
          Error                  MNP5, V.42, V.42bis                     
          Correction/Compression 
          Fax Class              Class I                                 
          Data Bus               PCMCIA                                  
       
                                                                   55075
       
          +------------------------------------------------------------+
          |                   SUPPORTED COMMAND SET                    |
          |------------------------------------------------------------|
          |                     Basic AT Commands                      |
          |------------------------------------------------------------|
          | AT, ‘+++’, A/                                              |
          |------------------------------------------------------------|
          | A, E, H, L, M, P, Q, T, V, W, X, Y                         |
          |------------------------------------------------------------|
          | &B, &C, &D, &G, &V, &Z                                     |
          |------------------------------------------------------------|
          |                    Extended AT Commands                    |
          |------------------------------------------------------------|
          | \J, \T                                                     |
          |------------------------------------------------------------|
          | %A, %G                                                     |
          |------------------------------------------------------------|
          |                      Special Commands                      |
          |------------------------------------------------------------|
          | +MS, -C                                                    |
          |------------------------------------------------------------|
          |                        S Registers                         |
          |------------------------------------------------------------|
          | S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12,     |
          | S24, S30                                                   |
          |------------------------------------------------------------|
          |                                                            |
          |------------------------------------------------------------|
          | Note: See MHI Help File for full command documentation.    |
          +------------------------------------------------------------+
       
                            PROPRIETARY AT COMMAND SET
       
          +------------------------------------------------------------+
          |                    AUTO-MODE DETECTION                     |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] Nn [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Selects various options for the automatic   |
          |              | detection and negotiation of protocols      |
          |              | during the handshake process if the modem   |
          |              | is communicating with a remote modem of     |
          |              | dissimilar speed.                           |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      N0      | In originate or answer mode, handshake      |
          |              | occurs only in mode designated by the ATB   |
          |              | command and S37 register.                   |
          |--------------+---------------------------------------------|
          |     í N1     | In originate or answer mode, handshake      |
          |              | begins at line speed designated by the S37  |
          |              | register and ATB command. Modem may shift   |
          |              | to a lower speed                            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  AUXILIARY RELAY CONTROL                   |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Jn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Enables/disables A/A1 relay driver. Not for |
          |              | use with RJ-11 phone lines                  |
          |--------------+---------------------------------------------|
          |   Command    |                  Jack Type                  |
          |--------------+---------------------------------------------|
          |     &J0      | Auxiliary relay is never closed             |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  COMMUNICATION PROTOCOLS                   |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] Bn [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Selects the communication protocol for data |
          |              | calls                                       |
          |------------------------------------------------------------|
          |      Note: The B command allows the simultaneous selection |
          |      of more than one suffix, enabling multiple protocols. |
          |------------------------------------------------------------|
          |   Command    |                  Protocol                   |
          |--------------+---------------------------------------------|
          |      B0      | ITU-T V.22 at 1200bps or V.21 at 300bps     |
          |--------------+---------------------------------------------|
          |      B1      | Bell 212A at 1200bps/ Bell 103J at 300bps   |
          |--------------+---------------------------------------------|
          |      B2      | ITU-T V.23 at 75/1200bps originate;         |
          |              | 1200/75bps answer                           |
          |--------------+---------------------------------------------|
          |      B3      | ITU-T V.23 at 1200/75bps answer; 75/1200bps |
          |              | originate                                   |
          |--------------+---------------------------------------------|
          |     B15      | ITU-T V.22 at 1200bps or V.21 at 300bps     |
          |--------------+---------------------------------------------|
          |     B16      | Bell 212A at 1200bps/ Bell 103J at 300bps   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    COMMUNICATIONS MODE                     |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Mn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Selects communications mode                 |
          |--------------+---------------------------------------------|
          |   Command    |                    Mode                     |
          |--------------+---------------------------------------------|
          |     &M0      | Asynchronous mode                           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    COMMUNICATIONS MODE                     |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Qn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Selects communications mode                 |
          |--------------+---------------------------------------------|
          |   Command    |                    Mode                     |
          |--------------+---------------------------------------------|
          |     &Q0      | Buffered asynchronous mode                  |
          |--------------+---------------------------------------------|
          |     &Q5      | Error correction mode                       |
          |--------------+---------------------------------------------|
          |     &Q6      | Buffered asynchronous mode                  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    DATA SET READY (DSR)                    |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Sn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Selects DSR options                         |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     &S0      | DSR forced high                             |
          |--------------+---------------------------------------------|
          |     &S1      | DSR high only while modem is handshaking or |
          |              | connected                                   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DATA TERMINAL READY (DTR)                  |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Dn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Selects modem response to DTR               |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     &D0      | DTR override                                |
          |--------------+---------------------------------------------|
          |     &D1      | DTR toggle causes online command mode       |
          |--------------+---------------------------------------------|
          |     &D2      | Normal DTR operations                       |
          |--------------+---------------------------------------------|
          |     &D3      | Resets on receipt of DTR                    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                            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                       |
          |--------------+---------------------------------------------|
          |     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;      | Modem returned to idle state after dialing. |
          |              | The semicolon can only be placed at the end |
          |              | of the dial command.                        |
          |--------------+---------------------------------------------|
          |      D^      | Data calling tone disabled                  |
          |--------------+---------------------------------------------|
          |      D$      | Wait for credit card "bong" tone before     |
          |              | processing the remaining characters in the  |
          |              | dial string                                 |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     ECHOPLEX VALIDITY                      |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] Fn [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Selects whether commands sent while in data |
          |              | mode are echoed                             |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      F1      | Echoplex disabled                           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  FACTORY DEFAULT PROFILE                   |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &F [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Sets values in active profile to values     |
          |              | found in the default profile                |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     &F0      | Sets values in active profile to factory    |
          |              | settings                                    |
          |--------------+---------------------------------------------|
          |     &F5      | Sets values in active profile to factory    |
          |              | settings for ETC mode                       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        FLOW CONTROL                        |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Kn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Enables flow control options                |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     &K0      | Flow control disabled                       |
          |--------------+---------------------------------------------|
          |     &K3      | RTS/CTS hardware flow control enabled       |
          |--------------+---------------------------------------------|
          |     &K4      | XON/XOFF software flow control enabled      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                          ON-LINE                           |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] On [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Controls on-line command (data              |
          |              | transmission) state options.                |
          |------------------------------------------------------------|
          |      Note: The O command must be placed at the end of the  |
          |      command string.                                       |
          |------------------------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      O0      | On-line command mode disabled; return to    |
          |              | data mode                                   |
          |--------------+---------------------------------------------|
          |      O1      | On-line command mode with retraining        |
          |              | enabled                                     |
          |--------------+---------------------------------------------|
          |      O2      | Rate negotiation issued before returning to |
          |              | online command mode                         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    PULSE DIALING RATIO                     |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Pn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Selects pulse dial make/break ratio         |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |    í &P0     | 39/61ms at 10pps (North America)            |
          |--------------+---------------------------------------------|
          |     &P1      | 33/67ms at 10pps (Europe)                   |
          |--------------+---------------------------------------------|
          |     &P2      | 33/67ms at 20pps                            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     REPORT INFORMATION                     |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] In [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Displays information requested              |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      I0      | Reports modem firmware revision information |
          |--------------+---------------------------------------------|
          |      I1      | Reports ROM checksum                        |
          |--------------+---------------------------------------------|
          |      I2      | Tests and reports ROM checksum              |
          |--------------+---------------------------------------------|
          |      I3      | Reports modem firmware revision information |
          |--------------+---------------------------------------------|
          |     I12      | Reports country code                        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                RESTORE PROFILE ON POWER-UP                 |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Yn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Restores a selected profile into the active |
          |              | profile on power-up (hard reset)            |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     &Y0      | Restore profile 0 on power-up               |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         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 setting 0                           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    STORE ACTIVE PROFILE                    |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Wn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Writes the values for the active profile    |
          |              | into the non-volatile RAM                   |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     &W0      | Write the active profile to stored profile  |
          |              | 0                                           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         TEST MODES                         |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Tn                               |
          |--------------+---------------------------------------------|
          | Description: | Selects test options                        |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |    í &T0     | End current test                            |
          |--------------+---------------------------------------------|
          |     &T1      | Begin local analog loopback test            |
          |--------------+---------------------------------------------|
          |     &T3      | Begin local digital loopback request        |
          |--------------+---------------------------------------------|
          |     &T6      | Request remote digital loopback             |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      TRANSMIT CARRIER                      |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] Cn [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Controls the transmit carrier switching     |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      C1      | Transmit carrier enabled                    |
          +------------------------------------------------------------+
       
                               EXTENDED AT COMMANDS
       
          +------------------------------------------------------------+
          |                         BLACKLIST                          |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] %Bn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Displays numbers which failed the last call |
          |              | attempt within two hours. In countries that |
          |              | do not require blacklisting, command        |
          |              | returns ERROR                               |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         BREAK TYPE                         |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] \Kn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Configures action of break signal           |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |    í \K5     | Modem sends break to remote modem in        |
          |              | sequence with transmitted data;             |
          |              |                                             |
          |              | non-destructive/non-expedited               |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        CONNECT MODE                        |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] \Nn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Controls the type of connection the modem   |
          |              | will operate in                             |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     \N0      | Normal mode enabled                         |
          |--------------+---------------------------------------------|
          |     \N1      | Normal mode enabled                         |
          |--------------+---------------------------------------------|
          |     \N2      | Reliable mode enabled                       |
          |--------------+---------------------------------------------|
          |    í \N3     | Auto-reliable mode enabled                  |
          |--------------+---------------------------------------------|
          |     \N4      | V.42 reliable mode enabled                  |
          |--------------+---------------------------------------------|
          |     \N5      | MNP reliable mode enabled                   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     FLOW CONTROL TYPE                      |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] \Qn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Sets type of flow control used by modem     |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     \Q0      | Flow control disabled                       |
          |--------------+---------------------------------------------|
          |     \Q1      | Bi-directional XON/XOFF flow control        |
          |              | enabled                                     |
          |--------------+---------------------------------------------|
          |    í \Q2     | RTS/CTS flow control to DTE enabled         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        FLOW CONTROL                        |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] \Gn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Selects modem port flow control. For        |
          |              | compatibility only.                         |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     \G0      | Returns OK                                  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   XON/XOFF PASS-THROUGH                    |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] \Xn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Selects whether XON/XOFF signals are sent   |
          |              | to remote modem                             |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     \X0      | XON/XOFF signals trapped by local modem     |
          +------------------------------------------------------------+
       
                                 SPECIAL COMMANDS
       
          +------------------------------------------------------------+
          |                IDENTIFY MODEM MANUFACTURER                 |
          |------------------------------------------------------------|
          | Type:         | Configuration                              |
          |---------------+--------------------------------------------|
          | Format:       | AT [cmds] +GMI? [cmds]                     |
          |---------------+--------------------------------------------|
          | Description:  | Commands DCE to send a message to the DTE  |
          |               | indicating the DCE manufacturer            |
          |------------------------------------------------------------|
          | Note:     | Modem manufacturers name may be changed using  |
          |           | the firmware configuration utility             |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   IDENTIFY PRODUCT MODEL                   |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] +GMM? [cmds]                      |
          |--------------+---------------------------------------------|
          | Description: | Commands DCE to send a message to the DTE   |
          |              | indicating the modem chipset name           |
          |------------------------------------------------------------|
          | Note:     | Modem product model may be changed using the   |
          |           | firmware configuration utility                 |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 IDENTIFY PRODUCT REVISION                  |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] +GMR? [cmds]                      |
          |--------------+---------------------------------------------|
          | Description: | Commands DCE to send a message to the DTE   |
          |              | indicating the modem chipset revision level |
          |------------------------------------------------------------|
          | Note:     | Modem chipset revision level may be changed    |
          |           | using the firmware configuration utility       |
          +------------------------------------------------------------+
       
                               S(status) -REGISTERS
       
          +------------------------------------------------------------+
          |                         AUTO MODE                          |
          |------------------------------------------------------------|
          | Format:       | AT [cmds] S43=n [cmds]                     |
          |---------------+--------------------------------------------|
          | Range:        | 0-1                                        |
          |------------------------------------------------------------|
          | Unit:                        | Unidentified                |
          |------------------------------------------------------------|
          | Description:  | Enables/disables V.32bis start-up mode.    |
          |---------------+--------------------------------------------|
          | Note:         | For testing and debugging purposes only    |
          |------------------------------------------------------------|
          |  Command   |                   Function                    |
          |------------+-----------------------------------------------|
          |   S43=0    | V.32bis srtart-up mode disabled               |
          |------------+-----------------------------------------------|
          |   S43=1    | V.32bis srtart-up mode enabled                |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         AUTO RATE                          |
          |------------------------------------------------------------|
          | Format:      | AT [cmds] S42=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Range:       | 0-1                                         |
          |------------------------------------------------------------|
          | Unit:                        | Unidentified                |
          |------------------------------------------------------------|
          | Description: | Enables/disables V.32 and V.22bis auto      |
          |              | rate.                                       |
          |--------------+---------------------------------------------|
          | Note:        | For testing and debugging purposes only     |
          |------------------------------------------------------------|
          |  Command  |                    Function                    |
          |-----------+------------------------------------------------|
          |   S42=0   | V.32 and V.22bis auto rate disabled            |
          |-----------+------------------------------------------------|
          |   S42=1   | V.32 and V.22bis auto rate enabled             |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  BIT-MAPPED REGISTER S14                   |
          |------------------------------------------------------------|
          | Format:      | AT [cmds] S14=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Range:       | 0-174                                       |
          |--------------+---------------------------------------------|
          | Unit:        | Bit-mapped                                  |
          |--------------+---------------------------------------------|
          | Description: | Controls result codes display, and dial     |
          |              | mode                                        |
          |--------------+---------------------------------------------|
          | Bit  | Value |                  Function                   |
          |------+-------+---------------------------------------------|
          | 2 -  |     0 | Reserved                                    |
          |  0   |       |                                             |
          |------+-------+---------------------------------------------|
          |  3   |     0 | Display result codes in numeric format      |
          |      |       |                                             |
          |      |     1 | Display result codes in verbose format      |
          |------+-------+---------------------------------------------|
          |  6   |   0 1 | Pulse dial set to 10pps                     |
          |      |       |                                             |
          |      |       | Pulse dial set to 20pps                     |
          |------+-------+---------------------------------------------|
          |  7   |     0 | Reserved                                    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  BIT-MAPPED REGISTER S21                   |
          |------------------------------------------------------------|
          | Format       | AT [cmds] S21=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Range:       | 0-253                                       |
          |--------------+---------------------------------------------|
          | Unit:        | Bit-mapped                                  |
          |--------------+---------------------------------------------|
          | Description: | Selects jack type, CTS/DCD/DSR signals, low |
          |              | DTR action, and the long space disconnect   |
          |              | function.                                   |
          |--------------+---------------------------------------------|
          | Bit  | Value |                  Function                   |
          |------+-------+---------------------------------------------|
          | 2 -  |     0 | Reserved                                    |
          |  0   |       |                                             |
          |------+-------+---------------------------------------------|
          | 4, 3 |    00 | DTR signal ignored                          |
          |      |       |                                             |
          |      |    01 | Modem goes to command mode on low DTR       |
          |      |       |                                             |
          |      |    10 | Modem disconnects on low DTR; Auto-Answer   |
          |      |       | is disabled.                                |
          |      |    11 |                                             |
          |      |       | Modem is initialized on low DTR             |
          |------+-------+---------------------------------------------|
          |  5   |     0 | DCD forced high                             |
          |      |       |                                             |
          |      |   í 1 | DCD normal                                  |
          |------+-------+---------------------------------------------|
          | 6, 7 |     0 | Reserved                                    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  BIT-MAPPED REGISTER S22                   |
          |------------------------------------------------------------|
          | Format       | AT [cmds] S22=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Range:       | 0-255                                       |
          |--------------+---------------------------------------------|
          | Unit:        | Bit-mapped                                  |
          |--------------+---------------------------------------------|
          | Description: | Controls speaker volume and controls,       |
          |              | limits results codes, and pulse dial        |
          |              | make/break ratio.                           |
          |--------------+---------------------------------------------|
          | Bit  | Value |                  Function                   |
          |------+-------+---------------------------------------------|
          | 3 -  |     0 | Reserved                                    |
          |  0   |       |                                             |
          |------+-------+---------------------------------------------|
          | 6 -  |   000 | Basic result codes only enabled             |
          |  4   |       |                                             |
          |      |   100 | Basic and connection speed result codes     |
          |      |       | enabled                                     |
          |      |   101 |                                             |
          |      |       | Basic and connection speed result codes and |
          |      |   110 | dialtone detection enabled                  |
          |      |       |                                             |
          |      |   111 | All result codes except dialtone detection  |
          |      |       | enabled                                     |
          |      |       |                                             |
          |      |       | All result codes enabled                    |
          |------+-------+---------------------------------------------|
          |  7   |     0 | 39/61ms at 10pps (North America)            |
          |      |       |                                             |
          |      |     1 | 33/67ms at 10pps (Europe)                   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DATA CALLING TONE                      |
          |------------------------------------------------------------|
          | Format:      | AT [cmds] S35=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Range:       | 0-1                                         |
          |------------------------------------------------------------|
          | Unit:                       | Unidentified                 |
          |------------------------------------------------------------|
          | Description: | Enables/disables data calling tone. S35=0   |
          |              | disables                                    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       DCE LINE SPEED                       |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format       | AT [cmds] S37=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Description: | Sets the maximum allowable data exchange    |
          |              | rate attempted during handshake process.    |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |    S37=0     | Maximum line speed                          |
          |--------------+---------------------------------------------|
          |    S37=2     | 1200/75bps                                  |
          |--------------+---------------------------------------------|
          |    S37=3     | 300bps                                      |
          |--------------+---------------------------------------------|
          |    S37=5     | 1200bps                                     |
          |--------------+---------------------------------------------|
          |    S37=6     | 2400bps                                     |
          |--------------+---------------------------------------------|
          |    S37=7     | 4800bps                                     |
          |--------------+---------------------------------------------|
          |    S37=8     | 7200bps                                     |
          |--------------+---------------------------------------------|
          |    S37=9     | 9600bps                                     |
          |--------------+---------------------------------------------|
          |    S37=10    | 12.0Kbps                                    |
          |--------------+---------------------------------------------|
          |    S37=11    | 14.4Kbps                                    |
          |--------------+---------------------------------------------|
          |    S37=12    | 16.8Kbps                                    |
          |--------------+---------------------------------------------|
          |    S37=13    | 19.2Kbps                                    |
          |--------------+---------------------------------------------|
          |    S37=14    | 21.6Kbps                                    |
          |--------------+---------------------------------------------|
          |    S37=15    | 24.0Kbps                                    |
          |--------------+---------------------------------------------|
          |    S37=16    | 26.4Kbps                                    |
          |--------------+---------------------------------------------|
          |    S37=17    | 28.8Kbps                                    |
          |--------------+---------------------------------------------|
          |    S37=18    | 31.2Kbps                                    |
          |--------------+---------------------------------------------|
          |    S37=19    | 33.6Kbps                                    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     56K DCE LINE SPEED                     |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format       | AT [cmds] S38=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Description: | Sets the maximum allowable 56K downstream   |
          |              | rate attempted during handshake process.    |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |    S38=0     | 56K disabled                                |
          |--------------+---------------------------------------------|
          |    S38=1     | 56K automatic speed select                  |
          |--------------+---------------------------------------------|
          |    S38=2     | 32.0Kbps                                    |
          |--------------+---------------------------------------------|
          |    S38=3     | 34.0Kbps                                    |
          |--------------+---------------------------------------------|
          |    S38=4     | 36.0Kbps                                    |
          |--------------+---------------------------------------------|
          |    S38=5     | 38.0Kbps                                    |
          |--------------+---------------------------------------------|
          |    S38=6     | 40.0Kbps                                    |
          |--------------+---------------------------------------------|
          |    S38=7     | 42.0Kbps                                    |
          |--------------+---------------------------------------------|
          |    S38=8     | 44.0Kbps                                    |
          |--------------+---------------------------------------------|
          |    S38=9     | 46.0Kbps                                    |
          |--------------+---------------------------------------------|
          |    S38=10    | 48.0Kbps                                    |
          |--------------+---------------------------------------------|
          |    S38=11    | 50.0Kbps                                    |
          |--------------+---------------------------------------------|
          |    S38=12    | 52.0Kbps                                    |
          |--------------+---------------------------------------------|
          |    S38=13    | 54.0Kbps                                    |
          |--------------+---------------------------------------------|
          |    S38=14    | 56.0Kbps                                    |
          |--------------+---------------------------------------------|
          |    S38=15    | 58.0Kbps                                    |
          |--------------+---------------------------------------------|
          |    S38=16    | 60.0Kbps                                    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                ERROR CORRECTION NEGOTIATION                |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format       | AT [cmds] S36=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Description: | Selects the action of the modem if it fails |
          |              | to connect with the error-correction        |
          |              | protocol set in &Q.                         |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |    S36=0     | Hang up                                     |
          |--------------+---------------------------------------------|
          |    S36=1     | Fall-back to asynchronous connection        |
          |--------------+---------------------------------------------|
          |    S36=2     | Hang up                                     |
          |--------------+---------------------------------------------|
          |    S36=3     | Fall-back to asynchronous connection        |
          |--------------+---------------------------------------------|
          |    S36=4     | Attempt a connection at MNP2-4; if that     |
          |              | fails, hang up.                             |
          |--------------+---------------------------------------------|
          |    S36=5     | Attempt a connection at MNP2-4; if that     |
          |              | fails, fall-back to asynchronous connection |
          |--------------+---------------------------------------------|
          |    S36=6     | Attempt a connection at MNP2-4; if that     |
          |              | fails, hang up.                             |
          |--------------+---------------------------------------------|
          |   í S36=7    | Attempt a connection at MNP2-4; if that     |
          |              | fails, fall-back to asynchronous connection |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   ETC STARTUP AUTORATING                   |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format       | AT [cmds] S40=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Description: | Determines default auto-rating              |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |    S40=0     | Start up with normal auto-rating            |
          |--------------+---------------------------------------------|
          |    S40=1     | Start up at initial rate of 4800bps or      |
          |              | below                                       |
          |--------------+---------------------------------------------|
          |    S40=2     | Start up at initial rate of 9600bps or      |
          |              | below                                       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                FEATURE NEGOTIATION OPTIONS                 |
          |------------------------------------------------------------|
          | Type:                        | Register                    |
          |------------------------------------------------------------|
          | Format:      | AT [cmds] S48=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Description: | Selects active error correction and         |
          |              | compression protocols                       |
          |------------------------------------------------------------|
          |    Command     |                 Function                  |
          |----------------+-------------------------------------------|
          |     S48=7      | Detection negotiation and XID negotiation |
          |                | enabled                                   |
          |----------------+-------------------------------------------|
          |    S48=128     | Fall-back to options set in S36           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     LOCAL PHONE STATUS                     |
          |------------------------------------------------------------|
          | Type:                            | Register                |
          |------------------------------------------------------------|
          | Format:      | AT [cmds] S90=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Description: | Displays the status of the local phone      |
          |------------------------------------------------------------|
          |       Command        |              Function               |
          |----------------------+-------------------------------------|
          |        S90=0         | Local phone on-hook                 |
          |----------------------+-------------------------------------|
          |        S90=1         | Local phone off-hook                |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        SLEEP TIMER                         |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format       | AT [cmds] S89=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Range:       | 0, 5-255                                    |
          |--------------+---------------------------------------------|
          | Unit:        | Unidentified                                |
          |--------------+---------------------------------------------|
          | Description: | Maximum duration of DTE and DCE inactivity  |
          |              | allowed prior to initiating low-power sleep |
          |              | mode.                                       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  SYNTHETIC RING FREQUENCY                  |
          |------------------------------------------------------------|
          | Format:      | AT [cmds] S33=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Range:       | 1-5                                         |
          |------------------------------------------------------------|
          | Unit:                        | Unidentified                |
          |------------------------------------------------------------|
          | Description: | Determines synthetic ring frequency. S33=0  |
          |              | disables                                    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   SYNTHETIC RING VOLUME                    |
          |------------------------------------------------------------|
          | Format:      | AT [cmds] S32=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Range:       | Unidentified                                |
          |------------------------------------------------------------|
          | Unit:                       | -1dB                         |
          |------------------------------------------------------------|
          | Description: | Determines synthetic ring volume            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |            TRANSMISSION LEVEL - DIRECT CONNECT             |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S92=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Default:     | 20                                          |
          |--------------+---------------------------------------------|
          | Range:       | Unidentified                                |
          |--------------+---------------------------------------------|
          | Unit:        | -1 dBm                                      |
          |--------------+---------------------------------------------|
          | Description: | Sets the signal level for transmission for  |
          |              | direct connections                          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 TRANSMISSION LEVEL - LINE                  |
          |------------------------------------------------------------|
          | Type        | Register or Configuration                    |
          |-------------+----------------------------------------------|
          | Format      | AT [cmds] S91=n [cmds]                       |
          |-------------+----------------------------------------------|
          | Range       | 6-15                                         |
          |-------------+----------------------------------------------|
          | Unit        | -1 dBm                                       |
          |-------------+----------------------------------------------|
          | Description | Sets the signal level for transmission over  |
          |             | phone lines                                  |
          |-------------+----------------------------------------------|
          | Note:       | Register only functions for Japan            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      V.34 MODULATION                       |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format       | AT [cmds] S28=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Range:       | 0-255                                       |
          |--------------+---------------------------------------------|
          | Unit:        | Unidentified                                |
          |--------------+---------------------------------------------|
          | Description: | Enables V.34 modulation protocol. S28=0     |
          |              | disables                                    |
          +------------------------------------------------------------+