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# MEGAHERTZ CORPORATION
C6144/C5144/Z3144/Z5144
Modem Type Data (synchronous/asynchronous)/Fax
Maximum Data Rate 14.4Kbps
Maximum Fax Rate 14.4Kbps
Data Bus Internal
Fax Class Class 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
V1286
Proprietary AT Command Set
+------------------------------------------------------------+
| AUTO-RELIABLE FALLBACK CHARACTER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %An [cmds] |
|--------------+---------------------------------------------|
| Example: | AT%A0 <CR> |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-127 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character used as the |
| | auto-reliable fallback character. %A0 will |
| | disable this function. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO-RELIABLE TIME BUFFER CONFIGURATION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Cn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \C1 &W<CR> |
|--------------+---------------------------------------------|
| Description: | Controls the handling of incoming data |
| | during auto-reliable time period. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \CO | Data is discarded. |
|--------------+---------------------------------------------|
| \C1 | Data is buffered. |
|--------------+---------------------------------------------|
| \C2 | Data is discarded, sets to normal mode and |
| | sends auto-reliable character to serial |
| | port. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO-RETRAIN |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %En [cmds] |
|--------------+---------------------------------------------|
| Example: | AT %E1 <CR> |
|--------------+---------------------------------------------|
| Description: | Selects auto-retrain mode. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %E0 | Auto-retrain disabled. |
|--------------+---------------------------------------------|
| %E1 | Auto-retrain enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S14 |
|------------------------------------------------------------|
| Format | AT [cmds] S14=n [cmds] |
|-----------------+------------------------------------------|
| Example: | ATS14=10 <CR> |
|-----------------+------------------------------------------|
| Default: | 10 |
|-----------------+------------------------------------------|
| Range: | 0 - 174 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Controls echo commands, result codes, |
| | pulse/tone dialing, and answer/originate |
| | modes. |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+----------------+--------------------------------|
| 0 | 0 | Not used. |
|----------+----------------+--------------------------------|
| 1 | 0 | Echo disabled. |
| | | |
| | 1 | Echo enabled. |
|----------+----------------+--------------------------------|
| 2 | 0 | Result codes disabled. |
| | | |
| | 1 | Result codes enabled. |
|----------+----------------+--------------------------------|
| 3 | 0 | Numeric form. |
| | | |
| | 1 | Verbose form. |
|----------+----------------+--------------------------------|
| 4 | 0 | Not used. |
|----------+----------------+--------------------------------|
| 5 | 0 | Tone dialing enabled. |
| | | |
| | 1 | Pulse dialing enabled. |
|----------+----------------+--------------------------------|
| 6 | 0 | Not used. |
|----------+----------------+--------------------------------|
| 7 | 0 | Answer enabled. |
| | | |
| | 1 | Originate enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S21 |
|------------------------------------------------------------|
| Format | AT [cmds] S21=n [cmds] |
|----------------+-------------------------------------------|
| Example: | ATS21=4<CR> |
|----------------+-------------------------------------------|
| Default: | 4 |
|----------------+-------------------------------------------|
| Range: | 0 - 253 |
|----------------+-------------------------------------------|
| Unit: | Bit-mapped |
|----------------+-------------------------------------------|
| Description: | Controls jack type, CTS signal, low DTR |
| | action, DCD signal, DSR signal, and the |
| | Long Space Disconnect function. |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+-------+-----------------------------------------|
| 0 | 0 | Selects RJ-11, RJ-41S, or RJ45S jack. |
| | | |
| | 1 | Selects RJ-12 or RJ-13 jack. |
|----------+-------+-----------------------------------------|
| 1 | 0 | Not used. |
|----------+-------+-----------------------------------------|
| 2 | 0 | CTS follows RTS. |
| | | |
| | 1 | CTS forced high. |
|----------+-------+-----------------------------------------|
| 4, 3 | 00 | DTR signal ignored. |
| | | |
| | 01 | Modem goes to command mode on low DTR. |
| | | |
| | 10 | Modem disconnects on low DTR. |
| | | Auto-Answer is disabled. |
| | 11 | |
| | | Modem is initialized on low DTR. |
|----------+-------+-----------------------------------------|
| 5 | 0 | DCD forced high. |
| | | |
| | 1 | DCD normal. |
|----------+-------+-----------------------------------------|
| 6 | 0 | DSR forced high. |
| | | |
| | 1 | DSR normal. |
|----------+-------+-----------------------------------------|
| 7 | 0 | Long Space Disconnect function |
| | | disabled. |
| | 1 | |
| | | Long Space Disconnect function enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S22 |
|------------------------------------------------------------|
| Format | AT [cmds] S22=n [cmds] |
|----------------+-------------------------------------------|
| Example: | ATS22=117<CR> |
|----------------+-------------------------------------------|
| Default: | 117 |
|----------------+-------------------------------------------|
| 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 | Low volume. |
| | | |
| | 10 | Medium level volume. |
| | | |
| | 11 | High level volume. |
|-----------+-------+----------------------------------------|
| 3, 2 | 00 | Speaker off. |
| | | |
| | 01 | Speaker off on carrier. |
| | | |
| | 10 | Speaker always on. |
| | | |
| | 11 | Speaker on during handshake. |
|-----------+-------+----------------------------------------|
| 6, 5, 4 | 000 | Basic result codes only enabled. |
| | | |
| | 100 | Basic and connection speed result |
| | | codes enabled. |
| | 101 | |
| | | Basic and connection speed result |
| | 110 | codes and dialtone detection enabled. |
| | | |
| | 111 | All result codes except dialtone |
| | | detection enabled. |
| | | |
| | | All result codes enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S23 |
|------------------------------------------------------------|
| Format | AT [cmds] S23=n [cmds] |
|------------------+-----------------------------------------|
| Example: | ATS23=183<CR> |
|------------------+-----------------------------------------|
| Default: | 183 |
|------------------+-----------------------------------------|
| 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 | Remote digital loopback denied. |
| | | |
| | 1 | Remote digital loopback allowed. |
|------------+--------+--------------------------------------|
| 3, 2, 1 | 000 | Sets serial port speed to 0-300bps. |
| | | |
| | 001 | Sets serial port speed to 600bps. |
| | | |
| | 010 | Sets serial port speed to 1200bps. |
| | | |
| | 011 | Sets serial port speed to 2400bps. |
| | | |
| | 100 | Sets serial port speed to 4800bps. |
| | | |
| | 101 | Sets serial port speed to 9600bps. |
| | | |
| | 110 | Sets serial port speed to 19200bps. |
|------------+--------+--------------------------------------|
| 5,4 | 00 | Parity even. |
| | | |
| | 10 | Parity odd. |
| | | |
| | 11 | No parity. |
|------------+--------+--------------------------------------|
| 7, 6 | 00 | Guard tone disabled. |
| | | |
| | 01 | Guard tone disabled. |
| | | |
| | 10 | Guard tone 1800Hz enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK SEND |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Bn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \B3 &W<CR> |
|--------------+---------------------------------------------|
| Range: | 1-9 |
|--------------+---------------------------------------------|
| Unit: | 100ms |
|--------------+---------------------------------------------|
| 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 |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT %Cn |
|--------------+---------------------------------------------|
| Example: | AT \N7 %C1 *AP0<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 | Normal mode enabled. |
|--------------+---------------------------------------------|
| \N2 | Reliable MNP mode enabled. |
|--------------+---------------------------------------------|
| \N3 | Auto-reliable MNP mode enabled. |
|--------------+---------------------------------------------|
| \N4 | Reliable LAPM mode enabled. |
|--------------+---------------------------------------------|
| \N5 | Auto-reliable LAPM mode enabled. |
|--------------+---------------------------------------------|
| \N6 | Reliable LAPM mode with fallback to MNP |
| | enabled. |
|--------------+---------------------------------------------|
| \N7 | Auto-reliable LAPM mode with fallback to |
| | MNP enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECTION SPEED LOWER LIMIT |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Mn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT %M300 \JO<CR> |
|--------------+---------------------------------------------|
| Description: | Sets slowest allowed connection speed. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %M300 | Select 300bps minimum speed. |
|--------------+---------------------------------------------|
| %M1200 | Select 1200bps minimum speed. |
|--------------+---------------------------------------------|
| %M2400 | Select 2400bps minimum speed. |
|--------------+---------------------------------------------|
| %M4800 | Select 4800bps minimum speed. |
|--------------+---------------------------------------------|
| %M7200 | Select 7200bps minimum speed. |
|--------------+---------------------------------------------|
| %M9600 | Select 9600bps minimum speed. |
|--------------+---------------------------------------------|
| %M12000 | Select 12Kbps minimum speed. |
|--------------+---------------------------------------------|
| %M14400 | Select 14.4Kbps minimum speed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECTION SPEED UPPER LIMIT |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Bn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT %L3 %B9600 \J0<CR> |
|--------------+---------------------------------------------|
| Description: | Sets fastest allowed connection speed. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %B300 | Select 300bps maximum speed. |
|--------------+---------------------------------------------|
| %B1200 | Select 1200bps maximum speed. |
|--------------+---------------------------------------------|
| %B2400 | Select 2400bps maximum speed. |
|--------------+---------------------------------------------|
| %B4800 | Select 4800bps maximum speed. |
|--------------+---------------------------------------------|
| ยป %B9600 | Select 9600bps maximum speed. |
|--------------+---------------------------------------------|
| %B7200 | Select 7200bps maximum speed. |
|--------------+---------------------------------------------|
| %B12000 | Select 12Kbps maximum speed. |
|--------------+---------------------------------------------|
| %B14400 | Select 14.4Kbps maximum speed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 | Reliable mode result codes enabled. |
|--------------+---------------------------------------------|
| \V2 | Reliable mode, error control, and |
| | compression result codes 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 enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL - ENQ/ACK |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Hn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \H9 <CR> |
|--------------+---------------------------------------------|
| Description: | Selects ENQ/ACK pacing. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \H0 | Disables ENQ/ACK pacing. |
|--------------+---------------------------------------------|
| \H1 | Enables ENQ/ACK pacing in terminal mode. |
|--------------+---------------------------------------------|
| \H2 | Enables ENQ/ACK pacing in host mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Qn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \Q5<CR> |
|--------------+---------------------------------------------|
| Description: | Sets type of flow control used by modem. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \Q0 | Flow control disabled. |
|--------------+---------------------------------------------|
| \Q1 | Bi-directional XON/XOFF flow control |
| | enabled. |
|--------------+---------------------------------------------|
| \Q2 | Unidirectional CTS/RTS flow control |
| | enabled. |
|--------------+---------------------------------------------|
| \Q3 | Bi-directional CTS/RTS flow control |
| | enabled. |
|--------------+---------------------------------------------|
| \Q4 | Unidirectional XON/XOFF flow control |
| | enabled. |
|--------------+---------------------------------------------|
| \Q5 | Unidirectional CTS/RTS flow control enabled |
| | with CTS forced low until connect. |
|--------------+---------------------------------------------|
| \Q6 | Bi-directional CTS/RTS flow control enabled |
| | with CTS forced low until connect. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PROTOCOL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Bn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S27=64 <CR> |
|--------------+---------------------------------------------|
| Description: | Selects the active protocols. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| S27=0 | ITU-T protocols. |
|--------------+---------------------------------------------|
| S27=64 | Bell protocols. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REPORT PRODUCT VERSION |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %V [cmds] |
|--------------+---------------------------------------------|
| Example: | AT I3 &V1 %V <CR> |
|--------------+---------------------------------------------|
| Description: | Reports product version. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SDLC CONFIGURATION |
|------------------------------------------------------------|
| Format | AT [cmds] S19=n [cmds] |
|----------------+-------------------------------------------|
| Example: | AT S19=40 <CR> |
|----------------+-------------------------------------------|
| Default: | 0 |
|----------------+-------------------------------------------|
| Range: | 0 - 22 |
|----------------+-------------------------------------------|
| Unit: | Bit-mapped |
|----------------+-------------------------------------------|
| Description: | Controls synchronous communication mode, |
| | SDLC address detection, and SDLC idle. |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+----------+--------------------------------------|
| 0 | 0 | Not used. |
|----------+----------+--------------------------------------|
| 1 | 0 | Binary synchronous communication. |
| | | |
| | 1 | SDLC. |
|----------+----------+--------------------------------------|
| 2 | 0 | SDLC address detect disabled. |
| | | |
| | 1 | SDLC address detect enabled. |
|----------+----------+--------------------------------------|
| 3 | 0 | Not used. |
|----------+----------+--------------------------------------|
| 4 | 0 | SDLC idle MARK |
| | | |
| | 1 | SDLC idle FLAG |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SWITCH TO MNP MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Z [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \Z &W<CR> |
|--------------+---------------------------------------------|
| Description: | Switches to normal mode from MNP mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TEST MODES |
|------------------------------------------------------------|
| Format | AT [cmds] S16=n [cmds] |
|---------------+--------------------------------------------|
| Example: | AT S16=40 <CR> |
|---------------+--------------------------------------------|
| Default: | Unidentified |
|---------------+--------------------------------------------|
| Range: | 0 - 125 |
|---------------+--------------------------------------------|
| Unit: | Bit-mapped |
|---------------+--------------------------------------------|
| Description: | Controls loopback tests, analog, digital, |
| | remote digital, and self tests. |
|------------------------------------------------------------|
| Bit | Value | Function |
|---------+-------+------------------------------------------|
| 0 | 0 | Local analog loopback not in progress. |
| | | |
| | 1 | Local analog loopback in progress. |
|---------+-------+------------------------------------------|
| 1 | 0 | Not used. |
|---------+-------+------------------------------------------|
| 2 | 0 | Local digital loopback not in progress. |
| | | |
| | 1 | Local digital loopback in progress. |
|---------+-------+------------------------------------------|
| 3 | 0 | Modem not in remote digital loopback. |
| | | |
| | 1 | Remote digital loopback in progress. |
|---------+-------+------------------------------------------|
| 4 | 0 | Remote digital loopback not requested. |
| | | |
| | 1 | Remote digital loopback requested. |
|---------+-------+------------------------------------------|
| 5 | 0 | Remote digital loopback with self-test |
| | | not in progress. |
| | 1 | |
| | | Remote digital loopback with self-test |
| | | in progress. |
|---------+-------+------------------------------------------|
| 6 | 0 | Local analog loopback with self-test not |
| | | in progress. |
| | 1 | |
| | | Local analog loopback with self-test in |
| | | progress. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| XON/XOFF PASS-THROUGH |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Xn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \X1 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. |
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