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# MEGAHERTZ CORPORATION
CC3288/XJ2288
Modem Type Data (synchronous/asynchronous)/Fax
Maximum Data Rate 28.8Kbps
Maximum Fax Rate 14.4Kbps
Data Bus PCMCIA type II
Fax Class Class I & II
Data Modulation Bell 103A/212A
Protocol
ITU-T V.21, V.22, V.22bis, V.23, V.32,
V.32bis, V.34
Fax Modulation ITU-T V.17, V.21CH2, V.27ter, V.29
Protocol
Error MNP5, V.42, V.42bis
Correction/Compression
V1301
Proprietary AT Command Set
+------------------------------------------------------------+
| AUTO FALL FORWARD/FALLBACK |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Gn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT %G &W <CR> |
|--------------+---------------------------------------------|
| Description: | Selects auto fallback. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %G1 | Fallback disabled. |
|--------------+---------------------------------------------|
| » %G0 | Fallback enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO FALLBACK CHARACTER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S43=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S43=13 <CR> |
|--------------+---------------------------------------------|
| Default: | 13 |
|--------------+---------------------------------------------|
| Range: | 0 - 127 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Set auto fallback character during MNP |
| | negotiation. |
|--------------+---------------------------------------------|
| Notes | S43=0, disabled. S43=(1 - 127), enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO SLEEP TIMER |
|------------------------------------------------------------|
| Format | AT [cmds] S46=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S46= 100<CR> |
|--------------+---------------------------------------------|
| Default: | 100 |
|--------------+---------------------------------------------|
| Range: | 0 - 255 |
|--------------+---------------------------------------------|
| Unit: | 100 ms |
|--------------+---------------------------------------------|
| Description: | Maximum duration of DTE and DCE inactivity |
| | allowed prior to initiating low-power sleep |
| | mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO-RELIABLE FALLBACK CHARACTER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %An [cmds] |
|--------------+---------------------------------------------|
| Example: | AT %A20 <CR> |
|--------------+---------------------------------------------|
| Default: | 13 |
|--------------+---------------------------------------------|
| 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 |
|--------------+---------------------------------------------|
| » \C0 | Data is discarded. |
|--------------+---------------------------------------------|
| \C1 | Data is buffered. |
|--------------+---------------------------------------------|
| \C2 | Data is discarded, modem returns to normal |
| | mode on receiving auto-reliable fallback |
| | character. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTOSYNC HDLC ADDRESS |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S20=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S20=6 <CR> |
|--------------+---------------------------------------------|
| Default: | 255 |
|--------------+---------------------------------------------|
| Description: | HDLC mode = HDLC address; Bisync sync |
| | character. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S14 |
|------------------------------------------------------------|
| Format | AT [cmds] S14=n [cmds] |
|-----------------+------------------------------------------|
| Example: | AT S14=170 <CR> |
|-----------------+------------------------------------------|
| Default: | 138 |
|-----------------+------------------------------------------|
| Range: | 0 - 190 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Controls echo, result codes, result code |
| | display, dumb mode, dial mode, and |
| | answer/originate mode. |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+------------+------------------------------------|
| 0 | 0 | Not used. |
|----------+------------+------------------------------------|
| 1 | 0 » 1 | Command echo disabled. |
| | | |
| | | Command echo enabled. |
|----------+------------+------------------------------------|
| 2 | » 0 1 | Result codes enabled. |
| | | |
| | | Result codes disabled. |
|----------+------------+------------------------------------|
| 3 | 0 » 1 | Display result codes in numeric |
| | | format. |
| | | |
| | | Display result codes in verbose |
| | | format. |
|----------+------------+------------------------------------|
| 4 | » 0 1 | AT command set disabled. |
| | | |
| | | AT command set enabled |
|----------+------------+------------------------------------|
| 5 | » 0 1 | Tone dial enabled. |
| | | |
| | | Pulse dial enabled. |
|----------+------------+------------------------------------|
| 6 | 0 | Not used. |
|----------+------------+------------------------------------|
| 7 | 0 » 1 | Answer mode enabled. |
| | | |
| | | Originate mode enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S21 |
|------------------------------------------------------------|
| Format | AT [cmds] S21=n [cmds] |
|-----------------+------------------------------------------|
| Example: | AT S21=48 <CR> |
|-----------------+------------------------------------------|
| Default: | 0 |
|-----------------+------------------------------------------|
| Range: | 0 - 124 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Selects CTS signal, low DTR action, DCD |
| | signal, and DSR signal. |
|------------------------------------------------------------|
| Bit | Value | Function |
|-----------+-------+----------------------------------------|
| 1, 0 | 0 | Not used. |
|-----------+-------+----------------------------------------|
| 2 | 0 » 1 | CTS follows RTS. |
| | | |
| | | CTS forced high. |
|-----------+-------+----------------------------------------|
| 4, 3 | 00 01 | DTR signal ignored. |
| | » 10 | |
| | 11 | Modem goes to command mode on low DTR. |
| | | |
| | | Modem disconnects on low DTR. |
| | | Auto-Answer is disabled. |
| | | |
| | | Modem is initialized on low DTR. |
|-----------+-------+----------------------------------------|
| 5 | 0 » 1 | DCD forced high. |
| | | |
| | | DCD normal. |
|-----------+-------+----------------------------------------|
| 6 | » 0 1 | DSR forced high. |
| | | |
| | | DSR normal. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S22 |
|------------------------------------------------------------|
| Format | AT [cmds] S22=n [cmds] |
|----------------+-------------------------------------------|
| Example: | AT S22=118 <CR> |
|----------------+-------------------------------------------|
| Default: | 118 |
|----------------+-------------------------------------------|
| Range: | 0 - 255 |
|----------------+-------------------------------------------|
| Unit: | Bit-mapped |
|----------------+-------------------------------------------|
| Description: | Controls speaker volume and controls, and |
| | limits results codes. |
|------------------------------------------------------------|
| Bit | Value | Function |
|-----------+-------+----------------------------------------|
| 1, 0 | 00 01 | Off volume. |
| | » 10 | |
| | 11 | On volume. |
| | | |
| | | Medium level volume. |
| | | |
| | | High level volume. |
|-----------+-------+----------------------------------------|
| 3, 2 | 00 » | Speaker off. |
| | 01 10 | |
| | 11 | Speaker off on carrier. |
| | | |
| | | Speaker always on. |
| | | |
| | | Speaker on during handshake. |
|-----------+-------+----------------------------------------|
| 6, 5, 4 | 000 | Basic result codes only enabled. |
| | 100 | |
| | 101 | Basic and connection speed result |
| | 110 » | codes enabled. |
| | 111 | |
| | | Basic and connection speed result |
| | | codes and dialtone detection enabled. |
| | | |
| | | All result codes except dialtone |
| | | detection enabled. |
| | | |
| | | All result codes enabled. |
|-----------+-------+----------------------------------------|
| 7 | » 0 1 | &P0 enabled. |
| | | |
| | | &P1 enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S-23 |
|------------------------------------------------------------|
| Format | AT [cmds] S23=n [cmds] |
|-----------------+------------------------------------------|
| Example: | AT S23=15 <CR> |
|-----------------+------------------------------------------|
| Default: | 15 |
|-----------------+------------------------------------------|
| Range: | 0 - 241 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Controls guard tones. Also indicates |
| | detected serial port speed and parity. |
| | Also provides storage for remote digital |
| | loopback tests. |
|------------------------------------------------------------|
| Bit | Value | Function |
|------------+------------+----------------------------------|
| 0 | 0 » 1 | &T5 enabled. |
| | | |
| | | &T4 enabled. |
|------------+------------+----------------------------------|
| 3, 2, 1 | 0 | Not used. |
|------------+------------+----------------------------------|
| 5, 4 | » 00 01 10 | Even parity. |
| | 11 | |
| | | Space parity. |
| | | |
| | | Odd parity. |
| | | |
| | | Mark parity. |
|------------+------------+----------------------------------|
| 7, 6 | » 00 01 10 | Guard tone disabled. |
| | | |
| | | 550Hz guard tone enabled. |
| | | |
| | | 1800Hz guard tone enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S27 |
|------------------------------------------------------------|
| Format | AT [cmds] S27=n [cmds] |
|-----------------+------------------------------------------|
| Example: | AT S27=9 <CR> |
|-----------------+------------------------------------------|
| Default: | 64 |
|-----------------+------------------------------------------|
| Range: | 0 - 127 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Selects sync/async mode, Line type, |
| | internal clock, and ITU-T/Bell modes. |
|------------------------------------------------------------|
| Bit | Value | Function |
|------------+-------+---------------------------------------|
| 3, 1, 0 | » 000 | Asynchronous mode, serial port speed |
| | 001 | follows connect speed. |
| | 010 | |
| | 011 | Asynchronous command mode and |
| | 100 | synchronous connect mode. |
| | | |
| | | Asynchronous command mode and |
| | | synchronous connect mode, DTR dialing |
| | | enabled. |
| | | |
| | | Asynchronous command mode on low DTR, |
| | | synchronous connect mode on high DTR. |
| | | |
| | | Hayes AutoSync™ mode - serial port |
| | | locked at 9600bps. |
|------------+-------+---------------------------------------|
| 2 | » 0 1 | Dial up line. |
| | | |
| | | Leased line. |
|------------+-------+---------------------------------------|
| 5, 4 | » 00 | Internal DTE transmit clock source. |
| | 01 10 | |
| | | External DTE transmit clock source. |
| | | |
| | | Slave DTE transmit clock source. |
|------------+-------+---------------------------------------|
| 6 | 0 » 1 | CCITT mode. |
| | | |
| | | Bell mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S40 |
|------------------------------------------------------------|
| Format | AT [cmds] S40=n [cmds] |
|----------------+-------------------------------------------|
| Example: | AT S40=65 <CR> |
|----------------+-------------------------------------------|
| Default: | 77 |
|----------------+-------------------------------------------|
| Range: | 0 - 65 |
|----------------+-------------------------------------------|
| Unit: | Bit-mapped |
|----------------+-------------------------------------------|
| Description: | Controls active protocols and V.42 |
| | detection. |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+-------+-----------------------------------------|
| 0 | 0 » 1 | Automatic mode-detection disabled |
| | | |
| | | In originate mode, handshake begins |
| | | at line speed designated by the S37 |
| | | register. Modem can shift to a slower |
| | | speed if necessary. |
| | | |
| | | In answer mode, handshake attempted |
| | | with the following protocols in order |
| | | - V.FC, V.32bis, V.32, V.22bis, V.22 |
| | | or Bell 212, V.21, and Bell 103 |
|----------+-------+-----------------------------------------|
| 1 | 0 | Not used. |
|----------+-------+-----------------------------------------|
| 3 - 2 | 1 | Not used. |
|----------+-------+-----------------------------------------|
| 5 - 4 | 0 | Not used. |
|----------+-------+-----------------------------------------|
| 6 | 0 » 1 | V.42 detection disabled. |
| | | |
| | | V.42 detection enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S41 |
|------------------------------------------------------------|
| Format | AT [cmds] S41=n [cmds] |
|-----------------------+------------------------------------|
| Example: | AT S41=0 <CR> |
|-----------------------+------------------------------------|
| Default: | 0 |
|-----------------------+------------------------------------|
| Range: | 0 - 2 |
|-----------------------+------------------------------------|
| Unit: | Bit-mapped |
|-----------------------+------------------------------------|
| Description: | Connect message display. |
|------------------------------------------------------------|
| Value | Function |
|-----------+------------------------------------------------|
| » S41=0 | Connect with DTE speed. |
|-----------+------------------------------------------------|
| S41=1 | Connect with carrier, protocol, and |
| | compression. |
|-----------+------------------------------------------------|
| S41=2 | Connect with DCE speed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S44 |
|------------------------------------------------------------|
| Format | AT [cmds] S44=n [cmds] |
|-----------------+------------------------------------------|
| Example: | AT S44=23 <CR> |
|-----------------+------------------------------------------|
| Default: | 23 |
|-----------------+------------------------------------------|
| Range: | 0 - 23 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Selects V.42 status, V.42bis, and |
| | fallback. |
|------------------------------------------------------------|
| Bit | Value | Function |
|------------+-------+---------------------------------------|
| 0 | 0 » 1 | V.42bis status disabled. |
| | | |
| | | V.42bis status enabled. |
|------------+-------+---------------------------------------|
| 2, 1 | 00 01 | V.42bis disabled. |
| | 10 » | |
| | 11 | V.42bis when transmitting enabled. |
| | | |
| | | V.42bis when receiving enabled. |
| | | |
| | | V.42bis when transmitting/receiving |
| | | enabled. |
|------------+-------+---------------------------------------|
| 3 | 0 | Not used. |
|------------+-------+---------------------------------------|
| 4 | 0 » 1 | Fallback disabled. |
| | | |
| | | Fallback enabled. |
|------------+-------+---------------------------------------|
| 7, 6, 5 | 0 | Not used. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S48 |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S48=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S48=0 <CR> |
|--------------+---------------------------------------------|
| Description: | Sets auto-reliable buffer. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » S48=0 | Data is discarded. |
|--------------+---------------------------------------------|
| S48=1 | Data is buffered. |
|--------------+---------------------------------------------|
| S48=2 | Data is discarded, modem returns to normal |
| | mode on receiving auto-reliable fallback |
| | character. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S49 |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S49=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S49=255<CR> |
|--------------+---------------------------------------------|
| Description: | Set maximum block size. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| S49=32 | Maximum MNP block size is 32 characters. |
|--------------+---------------------------------------------|
| S49=63 | Maximum MNP block size is 64 characters. |
|--------------+---------------------------------------------|
| S49=127 | Maximum MNP block size is 128 characters. |
|--------------+---------------------------------------------|
| S49=191 | Maximum MNP block size is 192 characters. |
|--------------+---------------------------------------------|
| » S49=255 | Maximum MNP block size is 256 characters. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S51 |
|------------------------------------------------------------|
| Format | AT [cmds] S51=n [cmds] |
|----------------+-------------------------------------------|
| Example: | AT S51=40 <CR> |
|----------------+-------------------------------------------|
| Default: | 3 |
|----------------+-------------------------------------------|
| Range: | 0 - 115 |
|----------------+-------------------------------------------|
| Unit: | Bit-mapped |
|----------------+-------------------------------------------|
| Description: | selects flow control, |
|------------------------------------------------------------|
| Bit | Value | Function |
|-----------+-------+----------------------------------------|
| 2, 1, 0 | 000 | Flow control disabled. |
| | 001 | |
| | 010 » | XON/XOFF flow control enabled. |
| | 011 | |
| | | CTS flow control to DTE enabled. |
| | | |
| | | RTS/CTS flow control enabled. |
|-----------+-------+----------------------------------------|
| 3 | 0 | Not used. |
|-----------+-------+----------------------------------------|
| 4 | » 0 1 | Flow control disabled. |
| | | |
| | | Flow control to XON/XOFF flow enabled. |
|-----------+-------+----------------------------------------|
| 5 | » 0 1 | Serial speed locked. |
| | | |
| | | Serial speed follows connect speed. |
|-----------+-------+----------------------------------------|
| 7, 6 | » 0 1 | XON/XOFF signals trapped by local |
| | | modem. |
| | | |
| | | XON/XOFF passed through local modem. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S54 |
|------------------------------------------------------------|
| Format | AT [cmds] S54=n [cmds] |
|-----------------+------------------------------------------|
| Example: | AT S54=69 <CR> |
|-----------------+------------------------------------------|
| Default: | 0 |
|-----------------+------------------------------------------|
| Range: | 0 - 255 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Selects the communication protocol for |
| | data calls, and protocol result code. |
|------------------------------------------------------------|
| Bit | Value | Function |
|-----------+-----------+------------------------------------|
| 0 | » 0 1 | B2 is enabled. |
| | | |
| | | B2 is not enabled. |
|-----------+-----------+------------------------------------|
| 1 | » 0 1 | B3 is enabled |
| | | |
| | | B3 is not enabled. |
|-----------+-----------+------------------------------------|
| 6 - 2 | 0 | Not used. |
|-----------+-----------+------------------------------------|
| 7 | » 0 1 | Protocol result code disabled. |
| | | |
| | | Protocol result code enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK SEND |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Bn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \B3 &W<CR> |
|--------------+---------------------------------------------|
| Range: | 1-9 |
|--------------+---------------------------------------------|
| Unit: | .1 second |
|--------------+---------------------------------------------|
| Description: | Sends break to modem. |
+------------------------------------------------------------+
+----------------------------------------------------------------+
| BREAK TYPE |
|----------------------------------------------------------------|
|Type: |Configuration |
|------------------+---------------------------------------------|
|Format: |AT [cmds] \Kn [cmds] |
|------------------+---------------------------------------------|
|Example: |AT \K1 <CR> |
|------------------+---------------------------------------------|
|Description: |Configures action of break signal. |
|----------------------------------------------------------------|
| Command |Break from DTE | Break from | Modem | Break from |
| | | DTE |receives \B |remote modem|
| |Reliable/Normal| | | |
| | mode |Direct mode | | |
|---------+---------------+------------+------------+------------|
|\K0 |Enter command |Send break |Buffers |Buffers |
| |mode, do not |to remote |cleared and |cleared and |
| |send break to |modem |break sent |break sent |
| |remote modem. |immediately,|to remote |to DTE. |
| | |then enter |modem. | |
| | |command | | |
| | |mode. | | |
|---------+---------------+------------+------------+------------|
|\K1 |Buffers cleared|Send break |Buffers |Buffers |
| |and break sent |to remote |cleared and |cleared and |
| |to remote |modem |break sent |break sent |
| |modem. |immediately.|to remote |to DTE. |
| | | |modem. | |
|---------+---------------+------------+------------+------------|
|\K2 |Enter command |Send break |Send break |Send break |
| |mode, do not |to remote |to remote |to DTE |
| |send break to |modem |modem |immediately.|
| |remote modem. |immediately,|immediately.| |
| | |then enter | | |
| | |command | | |
| | |mode. | | |
|---------+---------------+------------+------------+------------|
|\K3 |Send break to |Send break |Send break |Send break |
| |remote modem |to remote |to remote |to DTE |
| |immediately. |modem |modem |immediately.|
| | |immediately.|immediately.| |
|---------+---------------+------------+------------+------------|
|\K4 |Enter command |Send break |Send break |Break sent |
| |mode, do not |to remote |to remote |with |
| |send break to |modem |modem with |received |
| |remote modem. |immediately,|transmitted |data to the |
| | |then enter |data. |DTE. |
| | |command | | |
| | |mode. | | |
|---------+---------------+------------+------------+------------|
|» \K5 |Send break with|Send break |Send break |Break sent |
| |transmitted |to remote |to remote |with |
| |data. |modem |modem with |received |
| | |immediately.|transmitted |data to the |
| | | |data. |DTE. |
+----------------------------------------------------------------+
+------------------------------------------------------------+
| BTLZ STRING LENGTH |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S58=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S58=32 <CR> |
|--------------+---------------------------------------------|
| Default: | 32 |
|--------------+---------------------------------------------|
| Range: | 6 - 64 |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Selects BTLZ string length. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMPRESSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT %Cn |
|--------------+---------------------------------------------|
| Example: | AT &J1 %C1 \Q0<CR> |
|--------------+---------------------------------------------|
| Description: | Selects data compression. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %C0 | Data compression disabled. |
|--------------+---------------------------------------------|
| » %C1 | Data compression enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECT MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Nn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \N1 DT555-1212<CR> |
|--------------+---------------------------------------------|
| Description: | Sets connect mode. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \N0 | Normal mode enabled. |
|--------------+---------------------------------------------|
| \N1 | Direct mode enabled. |
|--------------+---------------------------------------------|
| \N2 | MNP reliable mode enabled. |
|--------------+---------------------------------------------|
| » \N3 | LAP-M, MNP, or Normal mode enabled. |
|--------------+---------------------------------------------|
| \N4 | LAP-M mode with fallback to MNP enabled. |
|--------------+---------------------------------------------|
| \N5 | LAP-M mode enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIGITAL LINE CURRENT SENSING |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] ~~Ln [cmds] |
|--------------+---------------------------------------------|
| Example: | AT ~~L1 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Controls the digital line current sensing. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| ~~L0 | Digital line current sensing disable. |
|--------------+---------------------------------------------|
| ~~L1 | Digital line current sensing enable. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIGITAL LINE OVER-CURRENT SENSING |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] ~~S=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT ~~S= 4 <CR> |
|--------------+---------------------------------------------|
| Default: | 4 |
|--------------+---------------------------------------------|
| Range: | 0 - 9 |
|--------------+---------------------------------------------|
| Unit: | 1 ms |
|--------------+---------------------------------------------|
| Description: | Sets the over-current sense time condition. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISPLAY LINE OVER-CURRENT SENSE TIME |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] ~~S? [cmds] |
|--------------+---------------------------------------------|
| Example: | AT ~~S? &W<CR> |
|--------------+---------------------------------------------|
| Description: | Displays current over-current sense time in |
| | milliseconds. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DTE RATE STATUS |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S62=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S62=16 <CR> |
|--------------+---------------------------------------------|
| Description: | Selects DTE rate. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| 0 | 300 bps. |
|--------------+---------------------------------------------|
| 1 | 600 bps. |
|--------------+---------------------------------------------|
| 2 | 1200 bps. |
|--------------+---------------------------------------------|
| 3 | 2400 bps. |
|--------------+---------------------------------------------|
| 4 | 4800 bps. |
|--------------+---------------------------------------------|
| 5 | 7200 bps. |
|--------------+---------------------------------------------|
| 6 | 9600 bps. |
|--------------+---------------------------------------------|
| 7 | 12Kbps. |
|--------------+---------------------------------------------|
| 8 | 14.4Kbps. |
|--------------+---------------------------------------------|
| 9 | 16.8Kbps. |
|--------------+---------------------------------------------|
| 10 | 19.2Kbps. |
|--------------+---------------------------------------------|
| 11 | 21.6Kbps. |
|--------------+---------------------------------------------|
| 12 | 24Kbps. |
|--------------+---------------------------------------------|
| 13 | 26.4Kbps. |
|--------------+---------------------------------------------|
| 14 | 28.8Kbps. |
|--------------+---------------------------------------------|
| 15 | 38.4Kbps. |
|--------------+---------------------------------------------|
| » 16 | 57.6Kbps. |
|--------------+---------------------------------------------|
| 17 | 115.2Kbps. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FAX/DATA MODE |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S50=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S50=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Choose data or FAX mode. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » 0 | Data mode enabled. |
|--------------+---------------------------------------------|
| 1 | FAX mode enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 to XON/XOFF flow enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Kn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &G1 &K3 <CR> |
|--------------+---------------------------------------------|
| Description: | Sets type of flow control used by modem. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &K0 | Flow control disabled. |
|--------------+---------------------------------------------|
| &K1 | Not used. |
|--------------+---------------------------------------------|
| &K2 | Not used. |
|--------------+---------------------------------------------|
| » &K3 | CTS/RTS flow control enabled. |
|--------------+---------------------------------------------|
| &K4 | XON/XOFF pass-through flow control enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Qn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \Q0 A <CR> |
|--------------+---------------------------------------------|
| 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. |
|--------------+---------------------------------------------|
| » \Q3 | RTS/CTS flow control enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S52=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &G1 S52=3 <CR> |
|--------------+---------------------------------------------|
| Description: | Sets type of flow control used by modem. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| S52=0 | Flow control disabled. |
|--------------+---------------------------------------------|
| S52=1 | Not used. |
|--------------+---------------------------------------------|
| S52=2 | Not used. |
|--------------+---------------------------------------------|
| » S52=3 | CTS/RTS flow control enabled. |
|--------------+---------------------------------------------|
| S52=4 | XON/XOFF pass-through flow control enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FORCED SLEEP TIMER |
|------------------------------------------------------------|
| Format | AT [cmds] S47=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S47=100 <CR> |
|--------------+---------------------------------------------|
| Default: | 10 |
|--------------+---------------------------------------------|
| Range: | 0 - 255 |
|--------------+---------------------------------------------|
| Unit: | 100 ms |
|--------------+---------------------------------------------|
| Description: | Specifies duration of DTE and DCE |
| | inactivity allowed prior to initiating |
| | sleep mode; This is used as a forced |
| | powerdown mode for PCMCIA. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INACTIVITY TIMER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Tn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \T20 <CR> |
|--------------+---------------------------------------------|
| 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 VALUE |
|------------------------------------------------------------|
| Format | AT [cmds] S30=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S30=0 <CR> |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0 - 90 |
|--------------+---------------------------------------------|
| Unit: | Minutes. |
|--------------+---------------------------------------------|
| Description: | Inactivity timer value. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LOCAL SERIAL PORT SPEED |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S72=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S72=16 *OS0 *SC1<CR> |
|--------------+---------------------------------------------|
| Description: | Sets serial port speed. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » S72=0 | Sets speed automatically. |
|--------------+---------------------------------------------|
| S72=1 | Sets 300bps speed. |
|--------------+---------------------------------------------|
| S72=2 | Sets 600bps speed. |
|--------------+---------------------------------------------|
| S72=3 | Sets 1200bps speed. |
|--------------+---------------------------------------------|
| S72=4 | Sets 2400bps speed. |
|--------------+---------------------------------------------|
| S72=5 | Sets 4800bps speed. |
|--------------+---------------------------------------------|
| S72=6 | Sets 7200bps speed. |
|--------------+---------------------------------------------|
| S72=7 | Sets 9600bps speed. |
|--------------+---------------------------------------------|
| S72=8 | Sets 12Kbps speed. |
|--------------+---------------------------------------------|
| S72=9 | Sets 14.4Kbps speed. |
|--------------+---------------------------------------------|
| S72=10 | Sets 16.8Kbps speed. |
|--------------+---------------------------------------------|
| S72=11 | Sets 19.2Kbps speed. |
|--------------+---------------------------------------------|
| S72=12 | Sets 21.6Kbps speed. |
|--------------+---------------------------------------------|
| S72=13 | Sets 24Kbps speed. |
|--------------+---------------------------------------------|
| S72=14 | Sets 26.4Kbps speed. |
|--------------+---------------------------------------------|
| S72=15 | Sets 28.8Kbps speed. |
|--------------+---------------------------------------------|
| S72=16 | Sets 38.4Kbps speed. |
|--------------+---------------------------------------------|
| S72=17 | Sets 57.6Kbps speed. |
|--------------+---------------------------------------------|
| S72=18 | Sets 115.2Kbps speed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LOCK SERIAL PORT |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Jn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT %L3 %B14 \J0<CR> |
|--------------+---------------------------------------------|
| Description: | Sets operation of serial port speed. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » \J0 | Serial speed locked. |
|--------------+---------------------------------------------|
| \J1 | Serial speed follows connect speed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MAXIMUM BLOCK SIZE FOR TRANSMISSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \An [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \A3 %C1<CR> |
|--------------+---------------------------------------------|
| Description: | Sets the maximum transmittable block size. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \A0 | Maximum MNP block size is 64 characters. |
|--------------+---------------------------------------------|
| \A1 | Maximum MNP block size is 128 characters. |
|--------------+---------------------------------------------|
| \A2 | Maximum MNP block size is 192 characters. |
|--------------+---------------------------------------------|
| » \A3 | Maximum MNP block size is 256 characters. |
|--------------+---------------------------------------------|
| \A4 | Maximum MNP block size is 32 characters. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MNP OPTIONS |
|------------------------------------------------------------|
| Format | AT [cmds] S59=n [cmds] |
|---------------+--------------------------------------------|
| Example: | AT S59=0 <CR> |
|---------------+--------------------------------------------|
| Default: | 1 |
|---------------+--------------------------------------------|
| Range: | 0 - 1 |
|---------------+--------------------------------------------|
| Unit: | Bit-mapped |
|---------------+--------------------------------------------|
| Description: | Selects MNP5 status. |
|------------------------------------------------------------|
| Bit | Value | Function |
|---------+-------+------------------------------------------|
| 0 | 0 » 1 | Data compression disabled. |
| | | |
| | | Data compression enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MODEM OPERATING MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S53=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S53=3 <CR> |
|--------------+---------------------------------------------|
| Description: | Sets connect mode. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| S53=0 | Normal mode enabled. |
|--------------+---------------------------------------------|
| S53=1 | Direct mode enabled. |
|--------------+---------------------------------------------|
| S53=2 | MNP reliable mode enabled. |
|--------------+---------------------------------------------|
| » S53=3 | LAP-M, MNP, or Normal mode enabled. |
|--------------+---------------------------------------------|
| S53=4 | LAP-M mode with fallback to MNP enabled. |
|--------------+---------------------------------------------|
| S53=5 | LAP-M mode enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PROTOCOL/SPEED |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S37n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S37=0 <CR> |
|--------------+---------------------------------------------|
| Description: | Selects the current DCE speed. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| S37=0 | Select last ATspeed. |
|--------------+---------------------------------------------|
| S37=3 | Select 300bps speed. |
|--------------+---------------------------------------------|
| S37=5 | Select 1200bps speed. |
|--------------+---------------------------------------------|
| S37=6 | Select 2400bps speed. |
|--------------+---------------------------------------------|
| S37=7 | Select 4800bps speed. |
|--------------+---------------------------------------------|
| S37=8 | Select 7200bps speed. |
|--------------+---------------------------------------------|
| S37=9 | Select 9600bps speed. |
|--------------+---------------------------------------------|
| S37=10 | Select 12Kbps speed. |
|--------------+---------------------------------------------|
| S37=11 | Select 14.4Kbps speed. |
|--------------+---------------------------------------------|
| S37=12 | Select 16.8Kbps speed. |
|--------------+---------------------------------------------|
| S37=13 | Select 19.2Kbps speed. |
|--------------+---------------------------------------------|
| S37=14 | Select 21.6Kbps speed. |
|--------------+---------------------------------------------|
| S37=15 | Select 24Kbps speed. |
|--------------+---------------------------------------------|
| S37=16 | Select 26.4Kbps speed. |
|--------------+---------------------------------------------|
| S37=17 | Select 28.8Kbps speed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PROTOCOL RESULT CODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Vn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \V0 Q0 <CR> |
|--------------+---------------------------------------------|
| Description: | \V responds when conjunction with W0 and W2 |
| | commands. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \V1 | Protocol result code disabled. |
|--------------+---------------------------------------------|
| » \V0 | Protocol result code enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ROOT FIRMWARE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] -V [cmds] |
|--------------+---------------------------------------------|
| Example: | AT -V &W<CR> |
|--------------+---------------------------------------------|
| Description: | Displays base firmware version information. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ROUND TRIP DELAY |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S65=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S65=1 <CR> |
|--------------+---------------------------------------------|
| Default: | Unidentified |
|--------------+---------------------------------------------|
| Range: | Unidentified |
|--------------+---------------------------------------------|
| Unit: | 100 ms |
|--------------+---------------------------------------------|
| Description: | Sets the round trip delay. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TEST MODES |
|------------------------------------------------------------|
| Format | AT [cmds] S16=n [cmds] |
|---------------+--------------------------------------------|
| Example: | ATS16=40<CR> |
|---------------+--------------------------------------------|
| Default: | 0 |
|---------------+--------------------------------------------|
| Range: | 0-127 |
|---------------+--------------------------------------------|
| Unit: | Bit-mapped |
|---------------+--------------------------------------------|
| Description: | Controls loopback tests, analog, digital, |
| | remote digital, and self tests. |
|------------------------------------------------------------|
| Bit | Value | Function |
|---------+-------+------------------------------------------|
| 0 | » 0 1 | Local analog loopback not in progress. |
| | | |
| | | Local analog loopback in progress. |
|---------+-------+------------------------------------------|
| 1 | 0 | Not used. |
|---------+-------+------------------------------------------|
| 2 | » 0 1 | Local digital loopback not in progress. |
| | | |
| | | Local digital loopback in progress. |
|---------+-------+------------------------------------------|
| 3 | » 0 1 | Modem not in remote digital loopback. |
| | | |
| | | Remote digital loopback in progress. |
|---------+-------+------------------------------------------|
| 4 | » 0 1 | Remote digital loopback not requested. |
| | | |
| | | Remote digital loopback requested. |
|---------+-------+------------------------------------------|
| 5 | » 0 1 | Remote digital loopback with self-test |
| | | not in progress. |
| | | |
| | | Remote digital loopback with self-test |
| | | in progress. |
|---------+-------+------------------------------------------|
| 6 | » 0 1 | Local analog loopback with self-test not |
| | | in progress. |
| | | |
| | | Local analog loopback with self-test in |
| | | progress. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.32 AUTO-RETRAIN |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Bn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &B1 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Selects action the modem will take during |
| | bad line quality on V.32/32bis connection. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %B0 | Auto-retrain disabled, hang up. |
|--------------+---------------------------------------------|
| %B1 | Auto-retrain on line quality problem |
| | enabled; Hang-up after S7 threshold |
| | exceeded. |
|--------------+---------------------------------------------|
| %B2 | Modem ignores line quality problems. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.32 RETRAIN |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S42=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S42=1 <CR> |
|--------------+---------------------------------------------|
| Default: | 1 |
|--------------+---------------------------------------------|
| Range: | 0 - 2 |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Selects action the modem will take during |
| | bad line quality on V.32/32bis connection. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| S42=0 | Auto-retrain disabled, hang up. |
|--------------+---------------------------------------------|
| » S42=1 | Auto-retrain on line quality problem |
| | enabled. |
|--------------+---------------------------------------------|
| S42=2 | Modem ignores line quality problems. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.42 DETECTION PHASE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] -Jn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT -J1 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Controls V.42 detection. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| -J0 | V.42 detection disabled. |
|--------------+---------------------------------------------|
| » -J1 | V.42 detection enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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.42bis DICTIONARY SIZE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] "Nn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT "N2 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Controls V.42 dictionary size. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| "N0 | 512 bytes. |
|--------------+---------------------------------------------|
| "N1 | 1024 bytes. |
|--------------+---------------------------------------------|
| » "N2 | 1536 bytes. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.42bis DICTIONARY SIZE |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S57=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S57=2 <CR> |
|--------------+---------------------------------------------|
| Description: | Selects V.42bis dictionary size. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| S57=0 | 512 bytes. |
|--------------+---------------------------------------------|
| S57=1 | 1024 bytes. |
|--------------+---------------------------------------------|
| » S57=2 | 1536 bytes. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.42bis MAXIMUM STRING LENGTH |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] "O=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT "O=32 <CR> |
|--------------+---------------------------------------------|
| Default: | 32 |
|--------------+---------------------------------------------|
| Range: | 6 - 64 |
|--------------+---------------------------------------------|
| Unit: | Unidentified |
|--------------+---------------------------------------------|
| Description: | Selects string size for V.42bis |
| | compression. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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. |