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# ARCHTEK AMERICA CORPORATION
2834A
Modem Type Data (synchronous/asynchronous)/Fax
Maximum Data Rate 28.8Kbps
Maximum Fax Rate 14.4Kbps
Data Bus External
Fax Class Class I & II
Data Modulation Bell 103J/212A
Protocol
ITU-T V.21, V.22, V.22bis, V.23, V.32,
V.32bis, V.34
AT&T V.32terbo
Fax Modulation ITU-T V.17, V.21CH2, V.27ter, V.29
Protocol
Error MNP5, V.42, V.42bis
Correction/Compression
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| Line out | CN1 | AC power | CN4 |
|------------------+----------+-------------------+----------|
| Line in | CN2 | Power switch | SW1 |
|------------------+----------+-------------------+----------|
| RS-232/422 | CN3 | | |
+------------------------------------------------------------+
Proprietary AT Command Set
+------------------------------------------------------------+
| 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 FALL FORWARD/FALLBACK |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Gn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT %G &W <CR> |
|--------------+---------------------------------------------|
| Description: | Selects auto fallback in V.22bis and V.32 |
| | only. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » %G0 | Fallback disabled. |
|--------------+---------------------------------------------|
| %G1 | Fallback enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO-RELIABLE FALLBACK CHARACTER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %An [cmds] |
|--------------+---------------------------------------------|
| Example: | AT%A0<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 \C0 &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. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO-RETRAIN |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %En [cmds] |
|--------------+---------------------------------------------|
| Example: | AT %E0 <CR> |
|--------------+---------------------------------------------|
| Description: | Selects auto-retrain mode. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %E0 | Auto-retrain disabled. |
|--------------+---------------------------------------------|
| » %E1 | Auto-retrain enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO SLEEP TIMER |
|------------------------------------------------------------|
| Format | AT [cmds] S46=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S46= 255<CR> |
|--------------+---------------------------------------------|
| Default: | 255 |
|--------------+---------------------------------------------|
| Range: | 0 - 255 |
|--------------+---------------------------------------------|
| Unit: | .1 second |
|--------------+---------------------------------------------|
| Description: | Maximum duration of DTE and DCE inactivity |
| | allowed prior to initiating low-power sleep |
| | mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S14 |
|------------------------------------------------------------|
| Format | AT [cmds] S14? [cmds] |
|-----------------+------------------------------------------|
| Example: | ATS14?<CR> |
|-----------------+------------------------------------------|
| Default: | Read only |
|-----------------+------------------------------------------|
| Range: | 0 - 255 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Controls echo, quiet mode, result codes, |
| | dial mode, and originate/answer mode. |
|------------------------------------------------------------|
| Bit | Value | Meaning |
|----------+--------+----------------------------------------|
| 0 | 0 | Not used. |
|----------+--------+----------------------------------------|
| 1 | 0 1 | Command echo function disabled. |
| | | |
| | | Command echo function enabled. |
|----------+--------+----------------------------------------|
| 2 | 0 1 | Result code sending disabled. |
| | | |
| | | Result code sending enabled. |
|----------+--------+----------------------------------------|
| 3 | 0 1 | Numeric format enabled. |
| | | |
| | | Verbose format enabled. |
|----------+--------+----------------------------------------|
| 4 | 0 | Not used. |
|----------+--------+----------------------------------------|
| 5 | 0 1 | Tone dialing mode enabled. |
| | | |
| | | Pulse dialing mode enabled. |
|----------+--------+----------------------------------------|
| 6 | 0 1 | Result codes normal. |
| | | |
| | | Result codes disabled in answer mode. |
|----------+--------+----------------------------------------|
| 7 | 0 1 | Answer mode enabled. |
| | | |
| | | Originate mode enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S40 |
|------------------------------------------------------------|
| Format | AT [cmds] S40=n [cmds] |
|----------------+-------------------------------------------|
| Example: | AT S40=77 <CR> |
|----------------+-------------------------------------------|
| Default: | 77 |
|----------------+-------------------------------------------|
| Range: | 0 - 127 |
|----------------+-------------------------------------------|
| 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 |
|----------+-------+-----------------------------------------|
| 5 - 1 | 00110 | Not used. |
|----------+-------+-----------------------------------------|
| 6 | 0 » 1 | V.42 detection disabled. |
| | | |
| | | V.42 detection enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S44 |
|------------------------------------------------------------|
| Format | AT [cmds] S44=n [cmds] |
|-----------------+------------------------------------------|
| Example: | AT S44=7 <CR> |
|-----------------+------------------------------------------|
| Default: | 7 |
|-----------------+------------------------------------------|
| 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 S49 |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S49=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S49=255<CR> |
|--------------+---------------------------------------------|
| Description: | Set maximum block size. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| S49=64 | Maximum MNP block size is 64 characters. |
|--------------+---------------------------------------------|
| S49=127 | Maximum MNP block size is 127 characters. |
|--------------+---------------------------------------------|
| S49=191 | Maximum MNP block size is 191 characters. |
|--------------+---------------------------------------------|
| » S49=255 | Maximum MNP block size is 255 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 | » 00 | XON/XOFF signals trapped by local |
| | 01 | 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 - 131 |
|-----------------+------------------------------------------|
| 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 \B0 &W<CR> |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| 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: | Unidentified |
|--------------+---------------------------------------------|
| Description: | Selects BTLZ string length. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CALLING TONE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] -Cn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT -C0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Controls whether the DTE will allow the |
| | modem to send a 1300Hz calling tone when |
| | originating. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » -C0 | Disable calling tone. |
|--------------+---------------------------------------------|
| -C1 | Enable calling tone. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMPRESSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Cn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT %C0 <CR> |
|--------------+---------------------------------------------|
| Description: | Selects data compression. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %C0 | Data compression disabled. |
|--------------+---------------------------------------------|
| » %C1 | Data compression enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECT MESSAGE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S41=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S41=0<CR> |
|--------------+---------------------------------------------|
| Description: | Controls CONNECT message. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » S41=0 | CONNECT with DTE speed. |
|--------------+---------------------------------------------|
| S41=1 | CONNECT with carrier, protocol, and |
| | compression. |
|--------------+---------------------------------------------|
| S41=2 | CONNECT with DCE speed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECT MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Nn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \N0 DT555-1212<CR> |
|--------------+---------------------------------------------|
| Description: | Sets connect mode. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \N0 | Normal mode enabled. |
|--------------+---------------------------------------------|
| \N1 | Direct mode enabled. |
|--------------+---------------------------------------------|
| \N2 | Reliable mode enabled. |
|--------------+---------------------------------------------|
| » \N3 | Auto-reliable mode enabled. |
|--------------+---------------------------------------------|
| \N4 | LAPM mode enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| EXTENDED RESULT CODES |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Vn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \V1 %C1<CR> |
|--------------+---------------------------------------------|
| Description: | Selects extended result codes. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » \V0 | Extended result codes disabled. |
|--------------+---------------------------------------------|
| \V1 | Extended result codes enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|--------------+---------------------------------------------|
| » S50=0 | Data mode enabled. |
|--------------+---------------------------------------------|
| S50=1 | FAX mode enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Gn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \G0 &K3<CR> |
|--------------+---------------------------------------------|
| Description: | Selects modem port flow control. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » \G0 | Flow control disabled. |
|--------------+---------------------------------------------|
| \G1 | Flow control enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Qn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \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: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S52=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &G1 S52=0 <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. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INACTIVITY TIMER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| 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. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LOCAL SERIAL PORT SPEED |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S72=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S72=0<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 \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 | MNP block size is 64 characters. |
|--------------+---------------------------------------------|
| \A1 | MNP block size is 128 characters. |
|--------------+---------------------------------------------|
| \A2 | MNP block size is 192 characters. |
|--------------+---------------------------------------------|
| » \A3 | MNP block size is 256 characters. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MODEM OPERATING MODE |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| 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 | Auto-reliable mode enabled. |
|--------------+---------------------------------------------|
| S53=4 | LAPM reliable mode enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MNP OPTIONS |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S59=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S59=0 <CR> |
|--------------+---------------------------------------------|
| Description: | Selects MNP5 status. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| S59=0 | Data compression disabled. |
|--------------+---------------------------------------------|
| » S59=1 | Data compression enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MNP STREAM/BLOCK MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Ln [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \L1 DT555-1212<CR> |
|--------------+---------------------------------------------|
| Description: | Selects the transfer mode for MNP. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \L0 | Stream mode for MNP enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.32 AUTO-RETRAIN |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S42=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S42=0 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Controls V.32 Auto-retrain. |
|--------------+---------------------------------------------|
| 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 -J0 &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 "H0 &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 MAXIMUM STRING LENGTH |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] "On [cmds] |
|--------------+---------------------------------------------|
| Example: | AT "O32 <CR> |
|--------------+---------------------------------------------|
| Default: | 32 |
|--------------+---------------------------------------------|
| Range: | 6 - 250 |
|--------------+---------------------------------------------|
| Unit: | ASCII character |
|--------------+---------------------------------------------|
| Description: | Selects string size for V.42bis |
| | compression. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| XON/XOFF PASS-THROUGH |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Xn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \X0 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. |
+------------------------------------------------------------+