TEXT View Source
# BOCA RESEARCH, INC.
BOCAMODEM 14.4 PCMCIA (M144PA)
Card Type Fax, Modem (asynchronous)
Chip Set Unidentified
Maximum Data Rate
Maximum Fax Rate 14.4Kbps
Data Bus PCMCIA Type II
Fax Class Class I
Data Modulation Bell 103A/212A
Protocol
ITU-T V.21, V.22, V.22bis, V.32,
V.32bis
Fax Modulation ITU-T V.17, V.21CH2, V.27ter, V.29
Protocol
Error MNP5, V.42bis
Correction/Compression
V1811
Proprietary AT Command Set
+------------------------------------------------------------+
| ACCEPT RELIABLE MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \U [cmds] |
|--------------+---------------------------------------------|
| Description: | Accepts remote modem’s request for reliable |
| | link |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO-FALLBACK/FALL-FORWARD |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Gn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects auto-fallback/fall-forward |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í %G1 | Auto-fallback/fall-forward disabled |
|--------------+---------------------------------------------|
| %G0 | Auto-fallback/fall-forward enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO-RELIABLE FALLBACK CHARACTER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %An [cmds] |
|--------------+---------------------------------------------|
| Default: | None |
|--------------+---------------------------------------------|
| 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] |
|--------------+---------------------------------------------|
| Description: | Controls the handling of incoming data |
| | during auto-reliable time period. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í \C0 | Data is discarded |
|--------------+---------------------------------------------|
| \C1 | Data is buffered for 4 seconds, 200 |
| | characters or SYN detected, switch to |
| | reliable mode |
|--------------+---------------------------------------------|
| \C2 | Data is discarded, switch to normal mode on |
| | receipt of auto reliable fallback character |
| | and pass character to DTE |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO-RETRAIN |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT %En |
|--------------+---------------------------------------------|
| Description: | Selects auto-retrain mode |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %E0 | Auto-retrain disabled |
|--------------+---------------------------------------------|
| í %E1 | Auto-retrain enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S14 |
|------------------------------------------------------------|
| Format | AT [cmds] S14=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 138 |
|--------------+---------------------------------------------|
| Range: | 0-174 |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Controls echo, result codes, result code |
| | display, dial mode, and answer/originate |
| | mode |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | 0 | Not used |
|------+-------+---------------------------------------------|
| 1 | 0 | Command echo disabled |
| | | |
| | í 1 | Command echo enabled |
|------+-------+---------------------------------------------|
| 6,2 | í 0 | Display result codes in numeric format |
| | | |
| | 1 | Display result codes in verbose format |
|------+-------+---------------------------------------------|
| 3 | 0 | Not used |
|------+-------+---------------------------------------------|
| 4 | 0 | Dumb mode disabled |
| | | |
| | 1 | Dumb mode enabled |
|------+-------+---------------------------------------------|
| 5 | í 0 | Tone dial enabled |
| | | |
| | 1 | Pulse dial enabled |
|------+-------+---------------------------------------------|
| 7 | 0 | Answer mode enabled |
| | | |
| | í 1 | Originate mode enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S21 |
|------------------------------------------------------------|
| Format | AT [cmds] S21=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 48 |
|--------------+---------------------------------------------|
| Range: | 0 - 253 |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Selects jack type, CTS signal, low DTR |
| | action, DCD signal, DSR signal, and the |
| | Long Space Disconnect function |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | í 0 | Selects RJ-11, RJ-41S, or RJ45S jack |
| | | |
| | 1 | Selects RJ-12 or RJ-13 jack |
|------+-------+---------------------------------------------|
| 1 | 0 | Not used |
|------+-------+---------------------------------------------|
| 2 | í 0 | CTS follows RTS |
| | | |
| | 1 | CTS forced high |
|------+-------+---------------------------------------------|
| 4, 3 | 00 | DTR signal ignored |
| | | |
| | 01 | Modem goes to command mode on low DTR |
| | | |
| | í10 | Modem disconnects on low DTR. Auto-Answer |
| | | is disabled |
| | 11 | |
| | | Modem is initialized on low DTR |
|------+-------+---------------------------------------------|
| 5 | 0 | DCD forced high |
| | | |
| | í1 | DCD normal |
|------+-------+---------------------------------------------|
| 6 | í 0 | DSR forced high |
| | | |
| | 1 | DSR normal |
|------+-------+---------------------------------------------|
| 7 | í 0 | Long Space Disconnect function disabled |
| | | |
| | 1 | Long Space Disconnect function enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S22 |
|------------------------------------------------------------|
| Format | AT [cmds] S22=n [cmds] |
|--------------+---------------------------------------------|
| Default: | None |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | Read only |
|--------------+---------------------------------------------|
| Description: | Displays speaker volume and controls, |
| | result codes and make/break ratio |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 1, 0 | 00 | Off volume |
| | | |
| | 01 | On volume |
| | | |
| | í 10 | Medium level volume |
| | | |
| | 11 | High level volume |
|------+-------+---------------------------------------------|
| 3, 2 | 00 | Speaker off |
| | | |
| | í 01 | Speaker off on carrier |
| | | |
| | 10 | Speaker always on |
| | | |
| | 11 | Speaker on during handshake |
|------+-------+---------------------------------------------|
| 6, | 000 | Basic result codes only enabled |
| 5, 4 | | |
| | 100 | Basic and connection speed result codes |
| | | enabled |
| | 101 | |
| | | Basic and connection speed result codes and |
| | 110 | dialtone detection enabled |
| | | |
| | 111 | All result codes except dialtone detection |
| | | enabled |
| | | |
| | | All result codes enabled |
|------+-------+---------------------------------------------|
| 7 | 0 | Make/Break pulse ratio is 39/61 |
| | | |
| | 1 | Make/Break pulse ratio is 33/67 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S23 |
|------------------------------------------------------------|
| Format | AT [cmds] S23=n [cmds] |
|--------------+---------------------------------------------|
| Default: | None |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | Read only |
|--------------+---------------------------------------------|
| Description: | Displays status of remote digital loopback, |
| | DTE rate and parity and guard tone |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | 0 | Remote digital loopback denied |
| | | |
| | í 1 | Remote digital loopback allowed |
|------+-------+---------------------------------------------|
| 3, | 000 | Sets serial port speed to 0-300bps |
| 2, 1 | | |
| | 001 | Sets serial port speed to 1200bps |
| | | |
| | 010 | Sets serial port speed to 2400bps |
| | | |
| | 011 | Sets serial port speed to 4800bps |
| | | |
| | 100 | Sets serial port speed to 7200bps |
| | | |
| | 101 | Sets serial port speed to 9600bps |
| | | |
| | 110 | Sets serial port speed to 19200bps |
| | | |
| | 111 | Sets serial port speed to 38400bps |
|------+-------+---------------------------------------------|
| 5,4 | í 00 | Parity even |
| | | |
| | 01 | Not used |
| | | |
| | 10 | Parity odd |
| | | |
| | 11 | No Parity |
|------+-------+---------------------------------------------|
| 7, 6 | í 00 | Guard tone disabled |
| | | |
| | 01 | Guard tone 550 enabled |
| | | |
| | 10 | Guard tone 1800Hz enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S27 |
|------------------------------------------------------------|
| Format | AT [cmds] S27=n [cmds] |
|--------------+---------------------------------------------|
| Default: | None |
|--------------+---------------------------------------------|
| Range: | 0 - 127 |
|--------------+---------------------------------------------|
| Unit: | Read only |
|--------------+---------------------------------------------|
| Description: | Displays status of sync/async mode, Line |
| | type, internal clock, and ITU-T/Bell modes |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 3, | 000 | Asynchronous mode, serial port speed |
| 1, 0 | | follows connect speed |
| | 001 | |
| | | Asynchronous command mode and synchronous |
| | 010 | connect mode |
| | | |
| | 011 | Asynchronous command mode and synchronous |
| | | connect mode, DTR dialing enabled |
| | 100 | |
| | | Asynchronous command mode on low DTR, |
| | | synchronous connect mode on high DTR |
| | | |
| | | Hayes AutoSync™ mode - serial port locked |
| | | at 9600bps |
|------+-------+---------------------------------------------|
| 2 | 0 | Dial up line |
| | | |
| | 1 | Leased line |
|------+-------+---------------------------------------------|
| 5, 4 | 00 | Internal DTE transmit clock source |
| | | |
| | 01 | External DTE transmit clock source |
| | | |
| | 10 | Slave DTE transmit clock source |
|------+-------+---------------------------------------------|
| 6 | 0 | CCITT mode |
| | | |
| | 1 | Bell mode |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK SEND |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Bn [cmds] |
|--------------+---------------------------------------------|
| Default: | Unidentified |
|--------------+---------------------------------------------|
| Range: | 0-9 |
|--------------+---------------------------------------------|
| Unit: | .1 second |
|--------------+---------------------------------------------|
| Description: | Sends break to modem |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK TYPE |
|------------------------------------------------------------|
|Type: |Configuration |
|-----------------+------------------------------------------|
|Format: |AT [cmds] \Kn [cmds] |
|-----------------+------------------------------------------|
|Description: |Configures action of break signal |
|------------------------------------------------------------|
| Command | Connected | Command | Command | Break |
| |in Reliable| state in | state in | received |
| | mode | Reliable |Direct mode |from remote|
| | | mode | | modem |
|----------+-----------+------------+------------+-----------|
| \K0 |Online |Break sent |Send break |Buffers |
| |command |to remote |to remote |cleared, |
| |mode |modem and |modem |break sent |
| |enabled, |buffered |immediately,|to DTE |
| |send no |cleared |Online | |
| |break to | |command mode| |
| |remote | |enabled | |
| |modem | | | |
|----------+-----------+------------+------------+-----------|
| \K1 |Break sent |Break sent |Send break |Buffers |
| |to remote |to remote |to remote |cleared, |
| |modem and |modem and |modem |break sent |
| |buffered |buffered |immediately |to DTE |
| |cleared |cleared | | |
|----------+-----------+------------+------------+-----------|
| \K2 |Online |Send break |Send break |Break sent |
| |command |to remote |to remote |immediately|
| |mode |modem |modem |to DTE |
| |enabled, |immediately |immediately,| |
| |send no | |Online | |
| |break to | |command mode| |
| |remote | |enabled | |
| |modem | | | |
|----------+-----------+------------+------------+-----------|
| \K3 |Send break |Send break |Send break |Break sent |
| |to remote |to remote |to remote |immediately|
| |modem |modem |modem |to DTE |
| |immediately|immediately |immediately | |
|----------+-----------+------------+------------+-----------|
| \K4 |Online |Send break |Send break |Break sent |
| |command |with |to remote |with |
| |mode |transmitted |modem |received |
| |enabled, |data |immediately,|data to the|
| |send no | |Online |DTE |
| |break to | |command mode| |
| |remote | |enabled | |
| |modem | | | |
|----------+-----------+------------+------------+-----------|
| í \K5 |Send break |Send break |Send break |Break sent |
| |with |with |to remote |with |
| |transmitted|transmitted |modem |received |
| |data |data |immediately |data to the|
| | | | |DTE |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CALLING TONE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] -Cn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls whether the DTE will allow the |
| | modem to send a 1300Hz calling tone when |
| | originating |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í -C0 | Disable calling tone |
|--------------+---------------------------------------------|
| -C1 | Enable calling tone |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMPRESSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT %Cn |
|--------------+---------------------------------------------|
| Description: | Selects data compression |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %C0 | Data compression disabled |
|--------------+---------------------------------------------|
| í %C1 | MNP5 enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECT MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Nn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls the type of connection the modem |
| | will operate in |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \N0 | Normal mode enabled |
|--------------+---------------------------------------------|
| \N1 | Direct mode enabled |
|--------------+---------------------------------------------|
| \N2 | MNP reliable mode enabled |
|--------------+---------------------------------------------|
| í \N3 | Auto-reliable mode enabled |
|--------------+---------------------------------------------|
| \N4 | V.42 reliable mode enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONVERT TO MNP RELIABLE MODE |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Y [cmds] |
|--------------+---------------------------------------------|
| Description: | Converts to MNP reliable mode from normal |
| | or direct mode |
+------------------------------------------------------------+
+------------------------------------------------------------+
| EXTENDED RESULT CODES |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Vn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects extended result codes |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í \V0 | Extended result codes disabled |
|--------------+---------------------------------------------|
| \V1 | Modified MNP result codes enabled |
|--------------+---------------------------------------------|
| \V2 | Extended V.42 result codes enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Gn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects modem port flow control |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í \G0 | Flow control disabled |
|--------------+---------------------------------------------|
| \G1 | Flow control enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Qn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets type of flow control used by modem |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \Q0 | Flow control disabled |
|--------------+---------------------------------------------|
| \Q1 | XON/XOFF flow control enabled |
|--------------+---------------------------------------------|
| \Q2 | CTS flow control to DTE enabled |
|--------------+---------------------------------------------|
| í \Q3 | RTS/CTS flow control enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INACTIVITY TIMER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Tn [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-90 |
|--------------+---------------------------------------------|
| Unit: | 1 minute |
|--------------+---------------------------------------------|
| Description: | Sets the length of time that the modem does |
| | not receive information before it |
| | disconnects. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INACTIVITY TIMER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S90=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | 1 minute |
|--------------+---------------------------------------------|
| Description: | Sets the length of time that the modem does |
| | not receive information before it |
| | disconnects. S90=0 will disable |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INITIATE MNP RELIABLE MODE |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \O [cmds] |
|--------------+---------------------------------------------|
| Description: | Initiates MNP reliable mode from normal or |
| | direct mode |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LOCK SERIAL PORT |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Jn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets operation of serial port speed |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í \J0 | Serial speed locked |
|--------------+---------------------------------------------|
| \J1 | Serial speed follows connect speed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MAXIMUM BLOCK SIZE FOR TRANSMISSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \An [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the maximum transmittable block size |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \A0 | MNP block size is 64 characters |
|--------------+---------------------------------------------|
| \A1 | MNP block size is 128 characters |
|--------------+---------------------------------------------|
| \A2 | MNP block size is 192 characters |
|--------------+---------------------------------------------|
| í \A3 | MNP block size is 256 characters |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LINE SIGNAL QUALITY |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Q [cmds] |
|--------------+---------------------------------------------|
| Description: | Returns a value which indicates line signal |
| | quality |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SWITCH TO NORMAL MODE |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Z [cmds] |
|--------------+---------------------------------------------|
| Description: | Switches to normal mode from MNP mode |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TEST MODES |
|------------------------------------------------------------|
| Format | AT [cmds] S16=n [cmds] |
|--------------+---------------------------------------------|
| Default: | None |
|--------------+---------------------------------------------|
| Range: | 0-125 |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Controls loopback tests, analog, digital, |
| | remote digital, and self tests |
|--------------+---------------------------------------------|
| Bit | Value | Function |
|------+-------+---------------------------------------------|
| 0 | 0 | Local analog loopback disabled |
| | | |
| | 1 | Local analog loopback enabled |
|------+-------+---------------------------------------------|
| 1 | 0 | Not used |
|------+-------+---------------------------------------------|
| 2 | 0 | Local digital loopback disabled |
| | | |
| | 1 | Local digital loopback enabled |
|------+-------+---------------------------------------------|
| 3 | 0 | Modem not in remote digital loopback |
| | | |
| | 1 | Remote digital loopback in progress |
|------+-------+---------------------------------------------|
| 4 | 0 | Remote digital loopback not requested |
| | | |
| | 1 | Remote digital loopback requested |
|------+-------+---------------------------------------------|
| 5 | 0 | Remote digital loopback w/ self-test |
| | | disabled |
| | 1 | |
| | | Remote digital loopback w/ self-test |
| | | enabled |
|------+-------+---------------------------------------------|
| 6 | 0 | Local analog loopback w/ self-test disabled |
| | | |
| | 1 | Local analog loopback w/ self-test enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TEST TIMER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format | AT [cmds] S18=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | 1 second |
|--------------+---------------------------------------------|
| Description: | Sets the maximum duration for modem tests |
|------------------------------------------------------------|
| Note: S18=0 disables the timer and allows an |
| indefinite duration. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.42 DETECTION PHASE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] -Jn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls V.42 detection |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| -J0 | V.42 detection disabled |
|--------------+---------------------------------------------|
| í -J1 | V.42 detection enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.42bis COMPRESSION CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] "Hn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls V.42bis data compression |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| "H0 | V.42bis disabled |
|--------------+---------------------------------------------|
| "H1 | V.42bis when transmitting enabled |
|--------------+---------------------------------------------|
| "H2 | V.42bis when receiving enabled |
|--------------+---------------------------------------------|
| í "H3 | V.42bis when transmitting/receiving enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.42bis MAXIMUM STRING LENGTH |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] "On [cmds] |
|--------------+---------------------------------------------|
| Default: | 16 |
|--------------+---------------------------------------------|
| Range: | 6-250 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Selects string size for V.42bis compression |
+------------------------------------------------------------+
+------------------------------------------------------------+
| XON/XOFF PASS-THROUGH |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Xn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects whether XON/XOFF signals are sent |
| | to remote modem |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í \X0 | XON/XOFF signals trapped by local modem |
|--------------+---------------------------------------------|
| \X1 | XON/XOFF passed through local modem |