(TXT) View Source
       
       # AT&T PARADYNE
       
          COMSPHERE 3910
       
          Modem Type             Data (synchronous/asynchronous)         
          Maximum Data Rate      19.2Kbps                                
          Data Bus               External                                
          Data Modulation        AT&T V.32terbo, Point to Point          
          Protocol               diagnostic, Trellis Multipoint          
                                                                         
                                 Bell 103A/212A                          
                                                                         
                                 ITU-T V.21, V.22, V.22bis, V.23,        
                                 V27bis, V.29, V.32, V.32bis             
          Error                  MNP5, V.42, V.42bis                     
          Correction/Compression 
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |       Purpose        | Location |    Purpose    | Location |
          |----------------------+----------+---------------+----------|
          | Switched line        |   CN1    | Power switch  |   SW1    |
          |----------------------+----------+---------------+----------|
          | Leased line          |   CN2    | Scroll left   |   CN6    |
          |----------------------+----------+---------------+----------|
          | RS-232/422           |   CN3    | Scroll right  |   CN7    |
          |----------------------+----------+---------------+----------|
          | DC power             |   CN4    | Go up one     |   CN8    |
          |                      |          | level         |          |
          |----------------------+----------+---------------+----------|
          | Network Management   |   CN5    | Go to top     |   CN9    |
          | (proprietary)        |          | level         |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DIAGNOSTIC LED(S)                      |
          |------------------------------------------------------------|
          |   LED    | Color  |  Status  |          Condition          |
          |----------+--------+----------+-----------------------------|
          |   PWR    | Green  |    On    |         Power is on         |
          |----------+--------+----------+-----------------------------|
          |   PWR    | Green  |   Off    |        Power is off         |
          |----------+--------+----------+-----------------------------|
          |   ALRM   |  Red   | Blinking |  Major alarm detected in a  |
          |          |        |          |  remote 391x series modem   |
          |----------+--------+----------+-----------------------------|
          |   ALRM   |  Red   |   Off    |      Normal operation       |
          |----------+--------+----------+-----------------------------|
          |   DIAG   | Green  |    On    |     Modem is receiving      |
          |          |        |          |     diagnostic messages     |
          |----------+--------+----------+-----------------------------|
          |   DIAG   | Green  |   Off    |   Modem is not receiving    |
          |          |        |          |     diagnostic messages     |
          |----------+--------+----------+-----------------------------|
          | DTR/108  | Green  |    On    |     DTR signal is high      |
          |----------+--------+----------+-----------------------------|
          | DTR/108  | Green  |   Off    |      DTR signal is low      |
          |----------+--------+----------+-----------------------------|
          | RTS/105  | Green  |    On    |     RTS signal is high      |
          |----------+--------+----------+-----------------------------|
          | RTS/105  | Green  |   Off    |      RTS signal is low      |
          |----------+--------+----------+-----------------------------|
          | CTS/106  | Green  |    On    |     CTS signal is high      |
          |----------+--------+----------+-----------------------------|
          | CTS/106  | Green  |   Off    |      CTS signal is low      |
          |----------+--------+----------+-----------------------------|
          | TXD/103  | Green  |    On    |   Modem is receiving data   |
          |          |        |          |          from DTE           |
          |----------+--------+----------+-----------------------------|
          | TXD/103  | Green  |   Off    | Modem is not receiving data |
          |          |        |          |          from DTE           |
          |----------+--------+----------+-----------------------------|
          | LSD/109  | Green  |    On    |   Carrier signal detected   |
          |----------+--------+----------+-----------------------------|
          | LSD/109  | Green  |   Off    | Carrier signal not detected |
          |----------+--------+----------+-----------------------------|
          | RXD/104  | Green  |    On    | Modem is transmitting data  |
          |          |        |          |           to DTE            |
          |----------+--------+----------+-----------------------------|
          | RXD/104  | Green  |   Off    |  Modem is not transmitting  |
          |          |        |          |         data to DTE         |
          |----------+--------+----------+-----------------------------|
          |    SQ    | Yellow | Blinking | Line signal is degraded or  |
          |          |        |          | data path is being blocked  |
          |----------+--------+----------+-----------------------------|
          |    SQ    | Yellow |   Off    |      Normal operation       |
          |----------+--------+----------+-----------------------------|
          | TEST/142 | Yellow |    On    | Test connection established |
          |----------+--------+----------+-----------------------------|
          | TEST/142 | Yellow | Blinking | Modem is upgrading firmware |
          |----------+--------+----------+-----------------------------|
          | TEST/142 | Yellow |   Off    |     No test connection      |
          |          |        |          |         established         |
          |----------+--------+----------+-----------------------------|
          |   RATE   | Yellow |    On    | Modem is connected at less  |
          |          |        |          |    than configured speed    |
          |----------+--------+----------+-----------------------------|
          |   RATE   | Yellow |   Off    |    Modem is connected at    |
          |          |        |          |      configured speed       |
          |----------+--------+----------+-----------------------------|
          |   DIAL   | Yellow |    On    |   Modem is establishing a   |
          |          |        |          |  switched line connection   |
          |----------+--------+----------+-----------------------------|
          |   DIAL   | Yellow | Blinking |  Switched line connection   |
          |          |        |          |         established         |
          |----------+--------+----------+-----------------------------|
          |   DIAL   | Yellow |   Off    | No switched line connection |
          +------------------------------------------------------------+
       
                            Proprietary AT Command Set
       
          +------------------------------------------------------------+
          |                       ANTISTREAMING                        |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S72=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S72=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Selects antistreaming option                |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S72=0      | Disabled                                    |
          |--------------+---------------------------------------------|
          | S72=1        | 10 seconds                                  |
          |--------------+---------------------------------------------|
          | S72=2        | 30 seconds                                  |
          |--------------+---------------------------------------------|
          | S72=3        | 1 minute                                    |
          |--------------+---------------------------------------------|
          | S72=4        | 2 minutes                                   |
          |--------------+---------------------------------------------|
          | S72=5        | 3 minutes                                   |
          |--------------+---------------------------------------------|
          | S72=6        | 5 minutes                                   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    AT COMMAND RESPONSE                     |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S84=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S84=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Sets the response to AT commands.           |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S84=0      | Normal operation                            |
          |--------------+---------------------------------------------|
          | S84=1        | Execute valid commands, suppress error      |
          |              | codes.                                      |
          |--------------+---------------------------------------------|
          | S84=2        | Ignore configuration commands, always       |
          |              | return OK error code.                       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         AUTO BAUD                          |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S78=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S78=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Allows modem to connect at remote modem’s   |
          |              | modulation.                                 |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S78=0      | Auto baud enabled.                          |
          |--------------+---------------------------------------------|
          | S78=1        | Auto baud disabled.                         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              AUTO-RELIABLE FALLBACK CHARACTER              |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] %An [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT%A20<CR>                                  |
          |--------------+---------------------------------------------|
          | Default:     | 19                                          |
          |--------------+---------------------------------------------|
          | Range:       | 0-127                                       |
          |--------------+---------------------------------------------|
          | Unit:        | ASCII                                       |
          |--------------+---------------------------------------------|
          | Description: | Sets the character used as the              |
          |              | auto-reliable fallback character. %A0 will  |
          |              | disable this function.                      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |          AUTO-RELIABLE TIME BUFFER CONFIGURATION           |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] \Cn [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT \C1 &W<CR>                               |
          |--------------+---------------------------------------------|
          | Description: | Controls the handling of incoming data      |
          |              | during auto-reliable time period.           |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » \CO        | Data is discarded.                          |
          |--------------+---------------------------------------------|
          | \C1          | Data is buffered.                           |
          |--------------+---------------------------------------------|
          | \C2          | Data is discarded, resets to \C1 on receipt |
          |              | of autoreliable fallback character.         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         BREAK TYPE                         |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] \Kn [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT \K5 &W<CR>                               |
          |--------------+---------------------------------------------|
          | Description: | Selects response to DTE break command.      |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | \K0          | Send break, clear buffer, enter command     |
          |              | mode.                                       |
          |--------------+---------------------------------------------|
          | \K1          | Send break, clear buffer                    |
          |--------------+---------------------------------------------|
          | \K2          | Send break, send data, enter command mode.  |
          |--------------+---------------------------------------------|
          | \K3          | Send break. send data,                      |
          |--------------+---------------------------------------------|
          | \K4          | Send data, send break, enter command mode.  |
          |--------------+---------------------------------------------|
          | » \K5        | Send data, send break.                      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 BUFFER REDUCED ASYNCRONOUS                 |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S97=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S97=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Limits asynchronous buffer size to a 20     |
          |              | character maximum                           |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S97=0      | Buffer size limit disabled.                 |
          |--------------+---------------------------------------------|
          | S97=1        | Buffer size limit enabled                   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    BUSY OUT ON LOW DTR                     |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S69=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S69=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Modem goes off hook on low DTR (use only in |
          |              | PBX mode).                                  |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S69=0      | Busy out disabled.                          |
          |--------------+---------------------------------------------|
          | S69=1        | Busy out enabled.                           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     CALLBACK SECURITY                      |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S67=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S67=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Enables callback security option            |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S67=0      | Disabled                                    |
          |--------------+---------------------------------------------|
          | S67=1        | Enabled                                     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         CD SIGNAL                          |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Cn [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT &C3 *RS1 *SR1<CR>                        |
          |--------------+---------------------------------------------|
          | Description: | Configures the behavior of the carrier      |
          |              | detect signal.                              |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | &C0          | CD forced high.                             |
          |--------------+---------------------------------------------|
          | » &C1        | CD normal.                                  |
          |--------------+---------------------------------------------|
          | &C2          | CD forced high except during handshaking    |
          |              | and disconnecting.                          |
          |--------------+---------------------------------------------|
          | &C3          | CD momentary follows DTR.                   |
          |--------------+---------------------------------------------|
          | &C4          | CD follows remote RTS signal.               |
          |--------------+---------------------------------------------|
          | &C5          | CD Follows DTR signal. Forced low on        |
          |              | disconnect.                                 |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CELLULAR ENHANCEMENTS                    |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S91=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S91=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Configures modem to enhanced cellular mode  |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S91=0      | Disabled                                    |
          |--------------+---------------------------------------------|
          | S91=1        | Enabled                                     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        COMPRESSION                         |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT %Cn                                      |
          |--------------+---------------------------------------------|
          | Example:     | AT I2 %C1 &B0 <CR>                          |
          |--------------+---------------------------------------------|
          | Description: | Selects data compression.                   |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          | %C0          | Data compression disabled.                  |
          |--------------+---------------------------------------------|
          | » %C1        | Data compression enabled.                   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         CTS SIGNAL                         |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] \Dn [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT \D0<CR>                                  |
          |--------------+---------------------------------------------|
          | Description: | Selects the function of the CTS signal.     |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » \D0        | CTS forced high.                            |
          |--------------+---------------------------------------------|
          | \D1          | CTS normal.                                 |
          |--------------+---------------------------------------------|
          | \D2          | CTS interrupted for 2 seconds on            |
          |              | disconnect.                                 |
          |--------------+---------------------------------------------|
          | \D3          | CTS follows DTR.                            |
          |--------------+---------------------------------------------|
          | \D4          | CTS follows RTS                             |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  DISCONNECT BUFFER DELAY                   |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S49=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S49=0<CR>                                |
          |--------------+---------------------------------------------|
          | Default:     | 10                                          |
          |--------------+---------------------------------------------|
          | Range:       | 0-255                                       |
          |--------------+---------------------------------------------|
          | Unit:        | 1 second                                    |
          |--------------+---------------------------------------------|
          | Description: | Selects how long the modem will continue to |
          |              | transmit data in transmit buffer after      |
          |              | receipt of disconnect signal                |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   DISCONNECT IMMEDIATELY                   |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S85=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S85=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Disconnect immediately on receipt of        |
          |              | disconnect signal from DTE or diagnostic    |
          |              | control panel.                              |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S85=0      | Disabled.                                   |
          |--------------+---------------------------------------------|
          | S85=1        | Enabled.                                    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               DISCONNECT ON LOSS OF CURRENT                |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S65=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S65=0<CR>                                |
          |--------------+---------------------------------------------|
          | Description: | Causes the modem to disconnect if the       |
          |              | telephone line’s current drops.             |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S65=0      | Disconnect after 8ms if current is lost.    |
          |--------------+---------------------------------------------|
          | S65=1        | Disconnect after 90ms if current is lost.   |
          |--------------+---------------------------------------------|
          | S65=2        | Disabled                                    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      DTE RATE CONTROL                      |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S61=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S61=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Sets result of DTE CT111 rate control       |
          |              | signal.                                     |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S61=0      | Disabled.                                   |
          |--------------+---------------------------------------------|
          | S61=1        | Fallback 1.                                 |
          |--------------+---------------------------------------------|
          | S61=2        | Fallback 2.                                 |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        FLOW CONTROL                        |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] \Gn [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT \G1 &K3<CR>                              |
          |--------------+---------------------------------------------|
          | Description: | Selects modem port flow control.            |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » \G0        | Flow control disabled.                      |
          |--------------+---------------------------------------------|
          | \G1          | Flow control enabled.                       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     FLOW CONTROL TYPE                      |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] \Qn [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT \Q5<CR>                                  |
          |--------------+---------------------------------------------|
          | Description: | Sets type of flow control used by modem.    |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | \Q0          | Flow control disabled.                      |
          |--------------+---------------------------------------------|
          | \Q1          | Bidirectional XON/XOFF flow control         |
          |              | enabled.                                    |
          |--------------+---------------------------------------------|
          | » \Q2        | CTS flow control by DCE enabled.            |
          |--------------+---------------------------------------------|
          | \Q3          | Bidirectional CTS/RTS flow control enabled. |
          |--------------+---------------------------------------------|
          | \Q4          | XON/XOFF flow control by DTE enabled.       |
          |--------------+---------------------------------------------|
          | \Q5          | XON/XOFF flow control by DCE enabled.       |
          |--------------+---------------------------------------------|
          | \Q6          | RTS flow control by DTE enabled.            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      INACTIVITY TIMER                      |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] \Tn [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT\T20<CR>                                  |
          |--------------+---------------------------------------------|
          | Default:     | 0                                           |
          |--------------+---------------------------------------------|
          | Range:       | 0-255                                       |
          |--------------+---------------------------------------------|
          | Unit:        | 1 minute                                    |
          |--------------+---------------------------------------------|
          | Description: | Sets the length of time that the modem does |
          |              | not receive information before it           |
          |              | disconnects.                                |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      LAP-M FRAME SIZE                      |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] \An [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT \A3 %C1<CR>                              |
          |--------------+---------------------------------------------|
          | Description: | Sets the maximum frame size for V.42 and    |
          |              | MNP connections.                            |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | \A0          | Maximum frame size is 64                    |
          |--------------+---------------------------------------------|
          | \A1          | Maximum frame size is 128                   |
          |--------------+---------------------------------------------|
          | \A2          | Maximum frame size is 192                   |
          |--------------+---------------------------------------------|
          | » \A3        | Maximum frame size is 256                   |
          |--------------+---------------------------------------------|
          | \A4          | Maximum frame size is 32                    |
          |--------------+---------------------------------------------|
          | \A5          | Maximum frame size is 16                    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     LAP-M FRAME WINDOW                     |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S89=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | ATS89=6<CR>                                 |
          |--------------+---------------------------------------------|
          | Default:     | 0                                           |
          |--------------+---------------------------------------------|
          | Range:       | 1-9                                         |
          |--------------+---------------------------------------------|
          | Unit:        | 1 frame (beginning with 0=6 frames)         |
          |--------------+---------------------------------------------|
          | Description: | Sets the number of frames used in V.42 and  |
          |              | V.42bis transmissions                       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  LEASED LINE AUTO-RETRAIN                  |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S82=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S82=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Allows modem to retrain to compensate for   |
          |              | bad line quality in V.32bis or V.32terbo    |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S82=0      | Retrain enabled.                            |
          |--------------+---------------------------------------------|
          | S82=1        | Retrain disabled.                           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |             LEASED LINE BACKUP SPECIAL STANDBY             |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S98=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S98=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Allows leased line dial backup using a      |
          |              | third modem.                                |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S98=0      | Disabled                                    |
          |--------------+---------------------------------------------|
          | S98=1        | Enabled                                     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  LEASED LINE DIAL BACKUP                   |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S46=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S46=0 &F1<CR>                            |
          |--------------+---------------------------------------------|
          | Description: | Automatically establishes switched line     |
          |              | connection if leased line fails             |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          | » S46=0      | Disabled.                                   |
          |--------------+---------------------------------------------|
          | S46=1        | Enabled.                                    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |             LEASED LINE BACKUP RECOVERY DELAY              |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S47=n &F1 [cmds]                  |
          |--------------+---------------------------------------------|
          | Example:     | AT S47=0 &F1 <CR>                           |
          |--------------+---------------------------------------------|
          | Description: | After leased line failure, modem attempts   |
          |              | to reconnect after specified delay.         |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          | » S46=0      | Disabled.                                   |
          |--------------+---------------------------------------------|
          | S46=1        | 15 minute delay.                            |
          |--------------+---------------------------------------------|
          | S46=2        | 60 minute delay.                            |
          |--------------+---------------------------------------------|
          | S46=3        | 4 hour delay                                |
          |--------------+---------------------------------------------|
          | S46=4        | 2 minute delay (test)                       |
          |--------------+---------------------------------------------|
          | S46=5        | Adv 15 minutes                              |
          |--------------+---------------------------------------------|
          | S46=6        | Adv 30 minutes                              |
          |--------------+---------------------------------------------|
          | S46=7        | Adv 60 minutes                              |
          |--------------+---------------------------------------------|
          | S46=8        | Adv 2 minutes (test)                        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                LEASED LINE DISCONNECT LEVEL                |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S48=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S48=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Sets level carrier signal drops to before   |
          |              | disconnect.                                 |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S48=0      | Disconnect at -43dBm                        |
          |--------------+---------------------------------------------|
          | S48=1        | Disconnect at -26dBm                        |
          |--------------+---------------------------------------------|
          | S48=2        | Disconnect at -33dBm                        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     LEASED LINE SPEED                      |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S44=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | ATS44=18<CR>                                |
          |--------------+---------------------------------------------|
          | Default:     | 18                                          |
          |--------------+---------------------------------------------|
          | Description: | Sets maximum leased line speed              |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          | S44=1        | 14.4Kbps V.32bis                            |
          |--------------+---------------------------------------------|
          | S44=2        | 12.0Kbps V.32bis                            |
          |--------------+---------------------------------------------|
          | S44=3        | 9600bps V.32bis                             |
          |--------------+---------------------------------------------|
          | S44=4        | 7200bps V.32bis                             |
          |--------------+---------------------------------------------|
          | S44=5        | 4800bps V.32bis                             |
          |--------------+---------------------------------------------|
          | S44=6        | 2400bps V.22bis                             |
          |--------------+---------------------------------------------|
          | S44=11       | 14.4Kbps V.33                               |
          |--------------+---------------------------------------------|
          | S44=12       | 12.0Kbps V.33                               |
          |--------------+---------------------------------------------|
          | S44=13       | 9600bps V.29                                |
          |--------------+---------------------------------------------|
          | S44=14       | 7200bps V.29                                |
          |--------------+---------------------------------------------|
          | S44=15       | 4800bps V.29                                |
          |--------------+---------------------------------------------|
          | S44=16       | 4800bps V.27                                |
          |--------------+---------------------------------------------|
          | S44=17       | 2400bps V.27bis                             |
          |--------------+---------------------------------------------|
          | » S44=18     | 19.2Kbps V.32terbo                          |
          |--------------+---------------------------------------------|
          | S44=19       | 16.8Kbps V.32terbo                          |
          |--------------+---------------------------------------------|
          | S44=20       | 19.2Kbps TMp                                |
          |--------------+---------------------------------------------|
          | S44=21       | 14.4Kbps TMp                                |
          |--------------+---------------------------------------------|
          | S44=22       | 9600bps TMp                                 |
          |--------------+---------------------------------------------|
          | S44=23       | 7200bps TMp                                 |
          |--------------+---------------------------------------------|
          | S44=24       | 4800bps TMp                                 |
          |--------------+---------------------------------------------|
          | S44=25       | 2400bps TMp                                 |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               LEASED LINE TRANSMISSION LEVEL               |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S45=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S45=15<CR>                               |
          |--------------+---------------------------------------------|
          | Default:     | 0                                           |
          |--------------+---------------------------------------------|
          | Range:       | 0 - 15                                      |
          |--------------+---------------------------------------------|
          | Unit:        | 1 dBm                                       |
          |--------------+---------------------------------------------|
          | Description: | Sets the signal level for transmission when |
          |              | in leased line mode.                        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         LINE TYPE                          |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Ln [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT &L0 H1 DT555-1212<CR>                    |
          |--------------+---------------------------------------------|
          | Description: | Selects line type.                          |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » &L0        | Switched line.                              |
          |--------------+---------------------------------------------|
          | &L1          | 2-wire originate mode leased line.          |
          |--------------+---------------------------------------------|
          | &L2          | 4-wire originate mode leased line.          |
          |--------------+---------------------------------------------|
          | &L3          | 2-wire answer mode leased line.             |
          |--------------+---------------------------------------------|
          | &L4          | 4-wire answer mode leased line.             |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   LOCAL ANALOG LOOPBACK                    |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S52=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S52=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Modem executes local analog loopback on     |
          |              | receipt of CT141 signal from DTE            |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S52=0      | Loopback disabled.                          |
          |--------------+---------------------------------------------|
          | S52=1        | Loopback enabled.                           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      LOCK SERIAL PORT                      |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S90=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S90=0<CR>                                |
          |--------------+---------------------------------------------|
          | Description: | Sets operation of serial port speed.        |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S90=0      | Disabled.                                   |
          |--------------+---------------------------------------------|
          | S90=1        | Serial speed follows connect speed.         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              NETWORK POSITION IDENTIFICATION               |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S74=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S74=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Identifies modem as either tributary or     |
          |              | control                                     |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S74=0      | Identify as tributary                       |
          |--------------+---------------------------------------------|
          | S74=1        | Identify as control                         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   PASSWORD REMOTE ACCESS                   |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S56=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | ATS56=06<CR>                                |
          |--------------+---------------------------------------------|
          | Default:     | None                                        |
          |--------------+---------------------------------------------|
          | Range:       | 00-99                                       |
          |--------------+---------------------------------------------|
          | Unit:        | Password digits                             |
          |--------------+---------------------------------------------|
          | Description: | Allows entry of the first two digits of     |
          |              | remote access password.                     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   PASSWORD REMOTE ACCESS                   |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S57=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | ATS57=06<CR>                                |
          |--------------+---------------------------------------------|
          | Default:     | None                                        |
          |--------------+---------------------------------------------|
          | Range:       | 00-99                                       |
          |--------------+---------------------------------------------|
          | Unit:        | Password digits                             |
          |--------------+---------------------------------------------|
          | Description: | Allows entry of the second two digits of    |
          |              | remote access password.                     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   PASSWORD REMOTE ACCESS                   |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S58=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | ATS58=06<CR>                                |
          |--------------+---------------------------------------------|
          | Default:     | None                                        |
          |--------------+---------------------------------------------|
          | Range:       | 00-99                                       |
          |--------------+---------------------------------------------|
          | Unit:        | Password digits                             |
          |--------------+---------------------------------------------|
          | Description: | Allows entry of the third two digits of     |
          |              | remote access password.                     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   PASSWORD REMOTE ACCESS                   |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S59=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | ATS59=06<CR>                                |
          |--------------+---------------------------------------------|
          | Default:     | None                                        |
          |--------------+---------------------------------------------|
          | Range:       | 00-99                                       |
          |--------------+---------------------------------------------|
          | Unit:        | Password digits                             |
          |--------------+---------------------------------------------|
          | Description: | Allows entry of the fourth two digits of    |
          |              | remote access password.                     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    REMOTE CONFIGURATION                    |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S55=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S55=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Allows remote configuration by 3800 series  |
          |              | modem.                                      |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S55=0      | Remote configuration enabled.               |
          |--------------+---------------------------------------------|
          | S55=1        | Remote configuration disabled.              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  REMOTE DIGITAL LOOPBACK                   |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S51=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S51=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Modem executes remote digital loopback on   |
          |              | receipt of CT140 signal from DTE            |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S51=0      | Loopback disabled.                          |
          |--------------+---------------------------------------------|
          | S51=1        | Loopback enabled.                           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     REPORT INFORMATION                     |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] In [cmds]                         |
          |--------------+---------------------------------------------|
          | Example:     | AT I1 O<CR>                                 |
          |--------------+---------------------------------------------|
          | Description: | Displays modem properties.                  |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      I0      | Reports product code.                       |
          |--------------+---------------------------------------------|
          |      I1      | Reports firmware 3 digit version number.    |
          |--------------+---------------------------------------------|
          |      I2      | Performs EPROM check                        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       STORED PROFILE                       |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S88=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S88=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Loads stored profile on disconnect.         |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S88=0      | Disabled.                                   |
          |--------------+---------------------------------------------|
          | S88=231      | Disabled.                                   |
          |--------------+---------------------------------------------|
          | S88=1        | Enabled.                                    |
          |--------------+---------------------------------------------|
          | S88=232      | Enabled.                                    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    SWITCHED LINE SPEED                     |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S41=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | ATS41=20<CR>                                |
          |--------------+---------------------------------------------|
          | Default:     | 20                                          |
          |--------------+---------------------------------------------|
          | Description: | Sets maximum line speed                     |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | S41=1        | 14.4Kbps V.32bis                            |
          |--------------+---------------------------------------------|
          | S41=2        | 12.0Kbps V.32bis                            |
          |--------------+---------------------------------------------|
          | S41=3        | 9600bps V.32bis, V.32                       |
          |--------------+---------------------------------------------|
          | S41=4        | 7200bps V.32bis                             |
          |--------------+---------------------------------------------|
          | S41=5        | 4800bps V.32bis, V.32                       |
          |--------------+---------------------------------------------|
          | S41=6        | 2400bps V.22bis                             |
          |--------------+---------------------------------------------|
          | S41=11       | 14.4Kbps V.33                               |
          |--------------+---------------------------------------------|
          | S41=12       | 12000bps V.33                               |
          |--------------+---------------------------------------------|
          | S41=13       | 9600bps V.29                                |
          |--------------+---------------------------------------------|
          | S41=14       | 7200bps V.29                                |
          |--------------+---------------------------------------------|
          | S41=15       | 4800bps V.29                                |
          |--------------+---------------------------------------------|
          | S41=16       | 4800bps V.27                                |
          |--------------+---------------------------------------------|
          | S41=17       | 2400bpsV.27bis                              |
          |--------------+---------------------------------------------|
          | S41=18       | 19.2Kbps V.32terbo                          |
          |--------------+---------------------------------------------|
          | S41=19       | 16.8Kbps V.32terbo                          |
          |--------------+---------------------------------------------|
          | » S41=20     | 19.2Kbps TMp                                |
          |--------------+---------------------------------------------|
          | S41=21       | 14.4Kbps TMp                                |
          |--------------+---------------------------------------------|
          | S41=22       | 9600bps TMp                                 |
          |--------------+---------------------------------------------|
          | S41=23       | 7200bps TMp                                 |
          |--------------+---------------------------------------------|
          | S41=24       | 4800bps TMp                                 |
          |--------------+---------------------------------------------|
          | S41=25       | 2400bps TMp                                 |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     TRANSMISSION LEVEL                     |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &In [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT &I26 &W<CR>                              |
          |--------------+---------------------------------------------|
          | Default:     | Unidentified                                |
          |--------------+---------------------------------------------|
          | Range:       | 0-32, 99, 100                               |
          |--------------+---------------------------------------------|
          | Unit:        | -1 dBm                                      |
          |--------------+---------------------------------------------|
          | Description: | Sets the signal level for transmission      |
          |------------------------------------------------------------|
          | Note: 0-9 invalid in North America.                        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |          TRELLIS MULTIPOINT TRANSMIT PREEMPHASIS           |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S96=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S96=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Compensates for high frequency attenuation  |
          |              | with amplification                          |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S96=0      | Enabled                                     |
          |--------------+---------------------------------------------|
          | S96=1        | Disabled                                    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               TRELLIS MULTIPOINT TRAIN TIME                |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S95=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S95=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Selects train time from tributary to        |
          |              | control modem.                              |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S95=0      | 10 milliseconds                             |
          |--------------+---------------------------------------------|
          | S95=1        | 20 milliseconds                             |
          |--------------+---------------------------------------------|
          | S95=2        | 50 milliseconds                             |
          |--------------+---------------------------------------------|
          | S95=3        | 100 milliseconds                            |
          |--------------+---------------------------------------------|
          | S95=4        | 200 milliseconds                            |
          |--------------+---------------------------------------------|
          | S95=5        | 300 milliseconds                            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      V.25bis CODE SET                      |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S62=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S62=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Sets coding type used in V.25bis mode.      |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S62=0      | ASCII                                       |
          |--------------+---------------------------------------------|
          | S62=1        | EBCDIC                                      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   V.25bis IDLE CHARACTER                   |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S63=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S63=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Sets V.25 idle fill type                    |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S63=0      | Fill character is mark.                     |
          |--------------+---------------------------------------------|
          | S63=1        | Fill character is flag.                     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 V.25bis NEW LINE CHARACTER                 |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S64=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S64=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Sets V.25 new line character.               |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S64=0      | Carriage return and line feed.              |
          |--------------+---------------------------------------------|
          | S64=1        | Carriage return.                            |
          |--------------+---------------------------------------------|
          | S64=2        | Line feed.                                  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         V.27 TRAIN                         |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S72=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S72=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Sets train length.                          |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S43=0      | Short                                       |
          |--------------+---------------------------------------------|
          |    S43=1     | Long                                        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       V.29 LINK TYPE                       |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S94=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S94=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Selects point to point or multipoint        |
          |              | operation                                   |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S94=0      | Point to point operation                    |
          |--------------+---------------------------------------------|
          | S94=1        | Multipoint operation                        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        V.29 RETRAIN                        |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S93=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S93=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Modem transmits training sequence on        |
          |              | receipt of training sequence                |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S93=0      | Disabled                                    |
          |--------------+---------------------------------------------|
          | S93=1        | Enabled                                     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         V.29 TRAIN                         |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S92=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S92=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Allows retrain based on incoming data or    |
          |              | training sequence. Required for tributary   |
          |              | modem.                                      |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S92=0      | Disabled                                    |
          |--------------+---------------------------------------------|
          | S92=1        | Enabled                                     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    V.32bis AUTO-RETRAIN                    |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S76=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S76=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Selects action the modem will take during   |
          |              | bad line quality on 32bis connection.       |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S76=0      | Auto retrain enabled.                       |
          |--------------+---------------------------------------------|
          | S76=1        | Auto retrain disabled.                      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       V.32bis TRAIN                        |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S43=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | AT S43=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Sets train length for V.32bis and V32.      |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S43=0      | Long                                        |
          |--------------+---------------------------------------------|
          | S43=1        | Short                                       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                V.42bis COMPRESSION CONTROL                 |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] "Hn [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT "H3 &W<CR>                               |
          |--------------+---------------------------------------------|
          | Description: | Controls V.42bis data compression           |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | "H0          | V.42bis disabled.                           |
          |--------------+---------------------------------------------|
          | "H1          | V.42bis when transmitting enabled.          |
          |--------------+---------------------------------------------|
          | "H2          | V.42bis when receiving enabled.             |
          |--------------+---------------------------------------------|
          | » "H3        | V.42bis when transmitting/receiving         |
          |              | enabled.                                    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    V.54 DEVICE ADDRESS                     |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S53=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | ATS53=6<CR>                                 |
          |--------------+---------------------------------------------|
          | Default:     | 0                                           |
          |--------------+---------------------------------------------|
          | Range:       | 0-34                                        |
          |--------------+---------------------------------------------|
          | Unit:        | Device address 0= disabled                  |
          |--------------+---------------------------------------------|
          | Description: | Identifies the address of the modem in      |
          |              | loopback test.                              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      V.54 DEVICE TYPE                      |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S54n [cmds]                       |
          |--------------+---------------------------------------------|
          | Example:     | AT S54=0 &W<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Identifies modem’s network position.        |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » S54=0      | Peripheral                                  |
          |--------------+---------------------------------------------|
          | S54=1        | Intermediate                                |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   XON/XOFF PASS-THROUGH                    |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] \Xn [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT \X7 O<CR>                                |
          |--------------+---------------------------------------------|
          | Description: | Selects whether XON/XOFF signals are sent   |
          |              | to remote modem.                            |
          |--------------+---------------------------------------------|
          | Command      |                  Function                   |
          |--------------+---------------------------------------------|
          | » \X0        | XON/XOFF signals trapped by local modem.    |
          |--------------+---------------------------------------------|
          | \X1          | XON/XOFF passed through local modem.        |
          +------------------------------------------------------------+
       
                         Proprietary V.25bis Command Set
       
          +------------------------------------------------------------+
          |                   DISPLAY STORED NUMBERS                   |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | RLNn                                        |
          |--------------+---------------------------------------------|
          | Example:     | RLN2<CR>                                    |
          |--------------+---------------------------------------------|
          | Description: | Display number in memory location n. If no  |
          |              | number is given, all stored numbers will be |
          |              | displayed.                                  |
          +------------------------------------------------------------+