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# MEGAHERTZ CORPORATION
CC3144/P2144/XJ1144
Modem Type Data (synchronous/asynchronous)/Fax
Maximum Data Rate 14.4Kbps
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
Fax Modulation ITU-T V.17, V.21CH2, V.27ter, V.29
Protocol
Error MNP5, V.42, V.42bis
Correction/Compression
V1299
Proprietary AT Command Set
+------------------------------------------------------------+
| AUTO-RETRAIN |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT %En |
|--------------+---------------------------------------------|
| Example: | AT %E1 <CR> |
|--------------+---------------------------------------------|
| Description: | Selects auto-retrain mode. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » %E0 | Auto-retrain disabled. |
|--------------+---------------------------------------------|
| %E1 | Auto-retrain enabled. |
|--------------+---------------------------------------------|
| %E2 | Fallback/fall forward enabled. |
|--------------+---------------------------------------------|
| %E3 | Auto-retrain enabled, fast hang-up when |
| | line quality is poor. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S14 |
|------------------------------------------------------------|
| Format | AT [cmds] S14=n [cmds] |
|-----------------+------------------------------------------|
| Example: | ATS14=138<CR> |
|-----------------+------------------------------------------|
| Default: | 138 |
|-----------------+------------------------------------------|
| Range: | 0-174 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Controls echo, result codes, result code |
| | display, dial mode, and answer/originate |
| | mode. |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+------------+------------------------------------|
| 0 | 0 | Not used. |
|----------+------------+------------------------------------|
| 1 | 0 » 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 | Not used. |
|----------+------------+------------------------------------|
| 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: | ATS21=4<CR> |
|----------------+-------------------------------------------|
| Default: | 4 |
|----------------+-------------------------------------------|
| Range: | 0 - 253 |
|----------------+-------------------------------------------|
| Unit: | Bit-mapped |
|----------------+-------------------------------------------|
| Description: | Selects jack type, CTS signal, low DTR |
| | action, DCD signal, DSR signal, and the |
| | Long Space Disconnect function. |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+-------+-----------------------------------------|
| 0 | » 0 1 | Selects RJ-11, RJ-41S, or RJ45S jack. |
| | | |
| | | Selects RJ-12 or RJ-13 jack. |
|----------+-------+-----------------------------------------|
| 1 | 0 | Not used. |
|----------+-------+-----------------------------------------|
| 2 | 0 » 1 | CTS follows RTS. |
| | | |
| | | CTS forced high. |
|----------+-------+-----------------------------------------|
| 4, 3 | » 00 | DTR signal ignored. |
| | 01 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. |
|----------+-------+-----------------------------------------|
| 7 | » 0 1 | Long Space Disconnect function |
| | | disabled. |
| | | |
| | | Long Space Disconnect function enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S22 |
|------------------------------------------------------------|
| Format | AT [cmds] S22=n [cmds] |
|----------------+-------------------------------------------|
| Example: | ATS22=118<CR> |
|----------------+-------------------------------------------|
| Default: | 118 |
|----------------+-------------------------------------------|
| Range: | 0-127 |
|----------------+-------------------------------------------|
| Unit: | Bit-mapped |
|----------------+-------------------------------------------|
| Description: | Controls speaker volume and controls, and |
| | limits results codes. |
|------------------------------------------------------------|
| Bit | Value | Function |
|-----------+-------+----------------------------------------|
| 1, 0 | 00 » | Off volume. |
| | 01 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. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S23 |
|------------------------------------------------------------|
| Format | AT [cmds] S23=n [cmds] |
|------------------+-----------------------------------------|
| Example: | ATS23=55<CR> |
|------------------+-----------------------------------------|
| Default: | 55 |
|------------------+-----------------------------------------|
| Range: | 0-255 |
|------------------+-----------------------------------------|
| Unit: | Bit-mapped |
|------------------+-----------------------------------------|
| Description: | Grants/denies remote digital loopback, |
| | controls DTE rate and parity, and sets |
| | guard tone. |
|------------------------------------------------------------|
| Bit | Value | Function |
|------------+--------+--------------------------------------|
| 0 | 0 » 1 | Remote digital loopback denied. |
| | | |
| | | Remote digital loopback allowed. |
|------------+--------+--------------------------------------|
| 3, 2, 1 | 000 | Sets serial port speed to 0-300bps. |
| | 001 | |
| | 010 » | Sets serial port speed to 600bps. |
| | 011 | |
| | 100 | Sets serial port speed to 1200bps. |
| | 101 | |
| | 110 | Sets serial port speed to 2400bps. |
| | | |
| | | Sets serial port speed to 4800bps. |
| | | |
| | | Sets serial port speed to 9600bps. |
| | | |
| | | Sets serial port speed to 19200bps. |
|------------+--------+--------------------------------------|
| 5,4 | 00 01 | Parity even. |
| | 10 » | |
| | 11 | Not used. |
| | | |
| | | Parity odd. |
| | | |
| | | No Parity. |
|------------+--------+--------------------------------------|
| 7, 6 | » 00 | Guard tone disabled. |
| | 01 10 | |
| | | Guard tone disabled. |
| | | |
| | | Guard tone 1800Hz enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S27 |
|------------------------------------------------------------|
| Format | AT [cmds] S27=n [cmds] |
|----------------+-------------------------------------------|
| Example: | ATS27=9<CR> |
|----------------+-------------------------------------------|
| Default: | 9 |
|----------------+-------------------------------------------|
| 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. |
| | 101 | |
| | 110 | Asynchronous off-line command mode and |
| | | synchronous connect mode. |
| | | |
| | | Error-correcting mode. |
| | | |
| | | Asynchronous mode, serial port speed |
| | | locked. |
|-----------+-------+----------------------------------------|
| 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 S28 |
|------------------------------------------------------------|
| Format | AT [cmds] S28=n [cmds] |
|----------------+-------------------------------------------|
| Example: | ATS28=0<CR> |
|----------------+-------------------------------------------|
| Default: | 0 |
|----------------+-------------------------------------------|
| Range: | 0 |
|----------------+-------------------------------------------|
| Unit: | Bit-mapped |
|----------------+-------------------------------------------|
| Description: | Controls V.23 split speed, V.23 split |
| | screen, V.23 half duplex, and pulse |
| | dialing. |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+-------+-----------------------------------------|
| 0 | » 0 1 | V.23 split speed operation disabled. |
| | | |
| | | V.23 split speed operation enabled. |
|----------+-------+-----------------------------------------|
| 1 | » 0 1 | Select 75bps transmit, 1200bps receive. |
| | | |
| | | Select 1200bps transmit, 75bps receive. |
|----------+-------+-----------------------------------------|
| 2 | 0 | Not used. |
|----------+-------+-----------------------------------------|
| 4, 3 | » 00 | 39ms make/61ms break at 10pps. |
| | 01 10 | |
| | 11 | 33ms make/67ms break at 10pps. |
| | | |
| | | 39ms make/61ms break at 20pps. |
| | | |
| | | 33ms make/67ms break at 20pps. |
|----------+-------+-----------------------------------------|
| 5 | 0 | Not used |
|----------+-------+-----------------------------------------|
| 7, 6 | » 00 | MNP at highest speed |
| | 01 10 | |
| | | MNP at 1200bps |
| | | |
| | | MNP at 1200bps |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S31 |
|------------------------------------------------------------|
| Format | AT [cmds] S31=n [cmds] |
|-----------------+------------------------------------------|
| Example: | ATS31=40<CR> |
|-----------------+------------------------------------------|
| Default: | 194 |
|-----------------+------------------------------------------|
| Range: | 0-255 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Controls auto-baud function and result |
| | codes. |
|------------------------------------------------------------|
| Bit | Value | Function |
|-----------+--------+---------------------------------------|
| 0 | 0 | Not used. |
|-----------+--------+---------------------------------------|
| 1 | 0 » 1 | Auto-baud disabled. |
| | | |
| | | Auto-baud enabled. |
|-----------+--------+---------------------------------------|
| 3, 2 | » 00 | DTE speed displayed in result codes. |
| | 01 10 | |
| | | Extended result codes enabled; DCE |
| | | speed displayed in result codes. |
| | | |
| | | DCE speed displayed in result codes. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S40 |
|------------------------------------------------------------|
| Format | AT [cmds] S40=n [cmds] |
|-----------------+------------------------------------------|
| Example: | ATS40=104<CR> |
|-----------------+------------------------------------------|
| Default: | 104 |
|-----------------+------------------------------------------|
| Range: | 0 - 255 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Controls power level and break handling; |
| | selects MNP extended services, link |
| | negotiation, and block size. |
|------------------------------------------------------------|
| Bit | Value | Function |
|------------+--------+--------------------------------------|
| 0 | í0 | MNP10 disabled. |
| | | |
| | » 1 | MNP10 enabled. |
|------------+--------+--------------------------------------|
| 1 | 0 1 | Link will be negotiated at highest |
| | | possible speed. |
| | | |
| | | Link will be negotiated at 1200bps. |
|------------+--------+--------------------------------------|
| 2 | » 0 1 | Power level adjustment enabled. |
| | | |
| | | Power level adjustment disabled. |
|------------+--------+--------------------------------------|
| 5, 4, 3 | 000 | \K0 |
| | 001 | |
| | 010 | \K1 |
| | 011 | |
| | 100 » | \K2 |
| | 101 | |
| | | \K3 |
| | | |
| | | \K4 |
| | | |
| | | \K5 |
|------------+--------+--------------------------------------|
| 7, 6 | 00 » | MNP block size is 64 characters. |
| | 01 10 | |
| | 11 | MNP block size is 128 characters. |
| | | |
| | | MNP block size is 192 characters. |
| | | |
| | | MNP block size is 256 characters. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S41 |
|------------------------------------------------------------|
| Format | AT [cmds] S41=n [cmds] |
|-----------------+------------------------------------------|
| Example: | ATS41=195<CR> |
|-----------------+------------------------------------------|
| Default: | 195 |
|-----------------+------------------------------------------|
| Range: | 0 - 223 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Selects compression, auto-retrain, flow |
| | control, and MNP mode. |
|------------------------------------------------------------|
| Bit | Value | Function |
|-----------+---------+--------------------------------------|
| 1 - 0 | 00 01 | Data compression disabled. |
| | 10 » 11 | |
| | | MNP5 enabled. |
| | | |
| | | V.42bis enabled. |
| | | |
| | | MNP5 and V.42bis enabled. |
|-----------+---------+--------------------------------------|
| 6, 2 | » 00 01 | Auto-retrain disabled. |
| | 10 | |
| | | Auto-retrain enabled. |
| | | |
| | | Fallback/fall forward enabled. |
|-----------+---------+--------------------------------------|
| 3 | » 0 1 | Flow control disabled. |
| | | |
| | | Flow control enabled. |
|-----------+---------+--------------------------------------|
| 4 | » 0 1 | Stream mode for MNP. |
| | | |
| | | Block mode for MNP. |
|-----------+---------+--------------------------------------|
| 5 | 0 | Not used. |
|-----------+---------+--------------------------------------|
| 7 | 0 » 1 | Fallback to V.22bis/V.22 disabled. |
| | | |
| | | Fallback to V.22bis/V.22 enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK SEND |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Bn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \B3 &W<CR> |
|--------------+---------------------------------------------|
| Range: | 1-9 |
|--------------+---------------------------------------------|
| Unit: | 100 ms |
|--------------+---------------------------------------------|
| 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 | Modem | Break |
| | DTE | receives \B | received |
| | | | from remote |
| | | | modem |
|---------------+---------------+--------------+-------------|
| \K0 | Online | Break sent | Buffers |
| | command mode | to remote | cleared, |
| | enabled, send | modem and | break sent |
| | no break to | buffered | to DTE. |
| | remote modem. | cleared. | |
|---------------+---------------+--------------+-------------|
| \K1 | Break sent to | Break sent | Buffers |
| | remote modem | to remote | cleared, |
| | and buffered | modem and | break sent |
| | cleared. | buffered | to DTE. |
| | | cleared. | |
|---------------+---------------+--------------+-------------|
| \K2 | Online | Send break | Break sent |
| | command mode | to remote | immediately |
| | enabled, send | modem | to DTE. |
| | no break to | immediately. | |
| | remote modem. | | |
|---------------+---------------+--------------+-------------|
| \K3 | Send break to | Send break | Break sent |
| | remote modem | to remote | immediately |
| | immediately. | modem | to DTE. |
| | | immediately. | |
|---------------+---------------+--------------+-------------|
| \K4 | Online | Send break | Break sent |
| | command mode | with | with |
| | enabled, send | transmitted | received |
| | no break to | data. | data to the |
| | remote modem. | | DTE. |
|---------------+---------------+--------------+-------------|
| \K5 | Send break | Send break | Break sent |
| | with | with | with |
| | transmitted | transmitted | received |
| | data. | data. | data to the |
| | | | DTE. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMPRESSION AND ERROR CORRECTION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT %Cn |
|--------------+---------------------------------------------|
| Example: | AT %C3 *Y1<CR> |
|--------------+---------------------------------------------|
| Description: | Selects data compression and error |
| | correction. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %C0 | Data compression disabled. |
|--------------+---------------------------------------------|
| %C1 | MNP5 enabled. |
|--------------+---------------------------------------------|
| %C2 | V.42bis enabled. |
|--------------+---------------------------------------------|
| » %C3 | V.42bis and MNP5 enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONFIGURATION PROFILES |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Sn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \S0<CR> |
|--------------+---------------------------------------------|
| Description: | Displays active configuration profiles. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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. |
|--------------+---------------------------------------------|
| \N2 | Reliable mode enabled. |
|--------------+---------------------------------------------|
| » \N3 | Auto-reliable mode enabled. |
|--------------+---------------------------------------------|
| \N4 | LAPM mode enabled. |
|--------------+---------------------------------------------|
| \N5 | MNP mode enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLASH DIAL MODIFIER TIME |
|------------------------------------------------------------|
| Format | AT [cmds] S29=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS29=0<CR> |
|--------------+---------------------------------------------|
| Default: | 70 |
|--------------+---------------------------------------------|
| Range: | 0-70 |
|--------------+---------------------------------------------|
| Unit: | 10 ms |
|--------------+---------------------------------------------|
| Description: | Time the modem will go on-hook upon |
| | receiving the ! dial modifier in dial |
| | string. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Gn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT G1 &K3<CR> |
|--------------+---------------------------------------------|
| Description: | Selects modem port flow control. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » \G0 | Flow control disabled. |
|--------------+---------------------------------------------|
| \G1 | Flow control enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL CHARACTER - XOFF |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S33=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS33=20<CR> |
|--------------+---------------------------------------------|
| Default: | 19 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character used to represent XOFF. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL CHARACTER - XON |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S32=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS32=20<CR> |
|--------------+---------------------------------------------|
| Default: | 17 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character used to represent XON. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| HDLC ADDRESS |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S20=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS20=6<CR> |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | 1 second |
|--------------+---------------------------------------------|
| Description: | Sets the HDLC address/BSC character. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LEASED LINE TRANSMISSION LEVEL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S99=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S99=8<CR> |
|--------------+---------------------------------------------|
| Default: | 10 |
|--------------+---------------------------------------------|
| Range: | 0 to 15 |
|--------------+---------------------------------------------|
| Unit: | -1 dBm |
|--------------+---------------------------------------------|
| Description: | Sets the signal level for transmission when |
| | in leased-line mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LINE SIGNAL LEVEL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %L [cmds] |
|--------------+---------------------------------------------|
| Example: | AT %L <CR> |
|--------------+---------------------------------------------|
| Description: | Returns value of signal level for |
| | transmission at the MDP. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LINE SIGNAL QUALITY |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Q [cmds] |
|--------------+---------------------------------------------|
| Example: | AT %Q &W<CR> |
|--------------+---------------------------------------------|
| Description: | Reports line signal quality. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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. |
|--------------+---------------------------------------------|
| \L2 | Block mode for MNP enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REMOTE ACCESS ESCAPE CHARACTER |
|------------------------------------------------------------|
| Format | AT [cmds] S202=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS202=40<CR> |
|--------------+---------------------------------------------|
| Default: | 170 |
|--------------+---------------------------------------------|
| Range: | 0 - 255 |
|--------------+---------------------------------------------|
| Unit: | Bit-mapped |
|--------------+---------------------------------------------|
| Description: | Holds value of ASCII character used as the |
| | escape character. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SLEEP TIMER |
|------------------------------------------------------------|
| Format | AT [cmds] S24=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS24=40<CR> |
|--------------+---------------------------------------------|
| Default: | 1 |
|--------------+---------------------------------------------|
| Range: | 0 - 255 |
|--------------+---------------------------------------------|
| Unit: | 10 ms |
|--------------+---------------------------------------------|
| Description: | Maximum duration of DTE and DCE inactivity |
| | allowed prior to initiating low-power sleep |
| | mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TEST MODES |
|------------------------------------------------------------|
| Format | AT [cmds] S16=n [cmds] |
|---------------+--------------------------------------------|
| Example: | ATS16=40<CR> |
|---------------+--------------------------------------------|
| Default: | 0 |
|---------------+--------------------------------------------|
| Range: | 0-125 |
|---------------+--------------------------------------------|
| 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 | í 0 | Local analog loopback with self-test not |
| | | in progress. |
| | 1 | |
| | | Local analog loopback with self-test in |
| | | progress. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TEST MODE - PTT |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %TT [cmds] |
|--------------+---------------------------------------------|
| Example: | AT %TT &W<CR> |
|--------------+---------------------------------------------|
| Description: | Send PTT test signals for European line |
| | test. |