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# MICROCOM, INC.
DESKPORTE 28.8S
Modem Type Data (synchronous/asynchronous)/Fax
Maximum Data Rate 28.8Kbps
Maximum Fax Rate Unidentified
Data Bus External
Fax Class Unidentified
Data Modulation Bell 103A/212A
Protocol
ITU-T V.21, V.22, V.22bis, V.23, V.32,
V.32bis, V.34
Rockwell V.FC
Fax Modulation Unidentified
Protocol
Error MNP5, MNP10, V.42, V.42bis
Correction/Compression
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| Line out | CN1 | DC power | CN4 |
|------------------+----------+-------------------+----------|
| Line in | CN2 | Power switch | SW1 |
|------------------+----------+-------------------+----------|
| RS-232/422 | CN3 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|-----+-------+-------------+--------------------------------|
| AA | Red | On | Auto-answer enabled |
|-----+-------+-------------+--------------------------------|
| AA | Red | Off | Auto-answer disabled |
|-----+-------+-------------+--------------------------------|
| RD | Red | On | Modem is receiving data |
|-----+-------+-------------+--------------------------------|
| RD | Red | Off | Modem is not receiving data |
|-----+-------+-------------+--------------------------------|
| SD | Red | On | Modem is transmitting data |
|-----+-------+-------------+--------------------------------|
| SD | Red | Off | Modem is not transmitting data |
|-----+-------+-------------+--------------------------------|
| CD | Red | On | Carrier signal detected |
|-----+-------+-------------+--------------------------------|
| CD | Red | Off | Carrier signal not detected |
|-----+-------+-------------+--------------------------------|
| OH | Red | On | Modem is off-hook |
|-----+-------+-------------+--------------------------------|
| OH | Red | Off | Modem is on-hook |
|-----+-------+-------------+--------------------------------|
| TR | Red | On | DTR signal is high |
|-----+-------+-------------+--------------------------------|
| TR | Red | Off | DTR signal is low |
|-----+-------+-------------+--------------------------------|
| TM | Red | On | Test mode enabled |
|-----+-------+-------------+--------------------------------|
| TM | Red | Off | Test mode disabled |
|-----+-------+-------------+--------------------------------|
| TM | Red | Slow blink | RAM test failed |
|-----+-------+-------------+--------------------------------|
| TM | Red | Medium | ROM test failed |
| | | blink | |
|-----+-------+-------------+--------------------------------|
| TM | Red | Fast blink | MDP(Data Pump) test failed |
+------------------------------------------------------------+
Proprietary AT Command Set
+------------------------------------------------------------+
| AUTO-RETRAIN - FALLBACK/FALLFORWARD |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %En [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls auto-retrain mode and |
| | fallback/fall forward |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %E0 | Auto-retrain disabled |
|--------------+---------------------------------------------|
| %E1 | Auto-retrain enabled |
|--------------+---------------------------------------------|
| » %E2 | Fallback/fall forward enabled |
|--------------+---------------------------------------------|
| %E3 | Auto-retrain enabled, modem will hang up if |
| | EQM reaches hang up threshold |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S14 |
|------------------------------------------------------------|
| Format | AT [cmds] S14=n [cmds] |
|-----------------+------------------------------------------|
| Default: | 138 |
|-----------------+------------------------------------------|
| Range: | 0-174 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Controls echo, result codes, result code |
| | display, dial mode, and answer/originate |
| | mode |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+--------+----------------------------------------|
| 0 | 0 | Not used |
|----------+--------+----------------------------------------|
| 1 | 0 | Command echo disabled |
| | | |
| | » 1 | Command echo enabled |
|----------+--------+----------------------------------------|
| 2 | » 0 | Result codes enabled |
| | | |
| | 1 | Result codes disabled |
|----------+--------+----------------------------------------|
| 3 | 0 | Display result codes in numeric format |
| | | |
| | » 1 | Display result codes in verbose format |
|----------+--------+----------------------------------------|
| 4 | 0 | Not used |
|----------+--------+----------------------------------------|
| 5 | » 0 | Tone dial enabled |
| | | |
| | 1 | Pulse dial enabled |
|----------+--------+----------------------------------------|
| 6 | 0 | Not used |
|----------+--------+----------------------------------------|
| 7 | 0 | Answer mode enabled |
| | | |
| | » 1 | Originate mode enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S21 |
|------------------------------------------------------------|
| Format | AT [cmds] S21=n [cmds] |
|----------------+-------------------------------------------|
| Default: | 0 |
|----------------+-------------------------------------------|
| Range: | 0-248 |
|----------------+-------------------------------------------|
| Unit: | Bit-mapped |
|----------------+-------------------------------------------|
| Description: | Selects low DTR action, DCD signal, DSR |
| | signal, and the Long Space Disconnect |
| | function |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+-------+-----------------------------------------|
| 2 - 0 | 0 | Not used |
|----------+-------+-----------------------------------------|
| 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] |
|----------------+-------------------------------------------|
| 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 level 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] |
|------------------+-----------------------------------------|
| Default: | 55 |
|------------------+-----------------------------------------|
| Range: | 0-189 |
|------------------+-----------------------------------------|
| 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 |
| | | |
| | 01 | Not used |
| | | |
| | 10 | Parity odd |
| | | |
| | » 11 | No Parity |
|------------+--------+--------------------------------------|
| 7, 6 | » 00 | Guard tone disabled |
| | | |
| | 01 | Guard tone disabled |
| | | |
| | 10 | Guard tone 1800Hz enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S27 |
|------------------------------------------------------------|
| Format | AT [cmds] S27=n [cmds] |
|-----------------+------------------------------------------|
| Default: | 73 |
|-----------------+------------------------------------------|
| Range: | 0-73 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Selects sync/async mode and ITU-T/Bell |
| | modes |
|------------------------------------------------------------|
| Bit | Value | Function |
|------------+-------+---------------------------------------|
| 3, 1, 0 | 000 | Asynchronous mode, serial port speed |
| | | follows connect speed |
| | » 101 | |
| | | Error correction mode |
|------------+-------+---------------------------------------|
| 5, 4, 2 | 0 | Not used |
|------------+-------+---------------------------------------|
| 6 | 0 | CCITT mode |
| | | |
| | » 1 | Bell mode |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S28 |
|------------------------------------------------------------|
| Format | AT [cmds] S28=n [cmds] |
|-----------------+------------------------------------------|
| Default: | 0 |
|-----------------+------------------------------------------|
| Range: | 0-128 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Controls pulse dialing and MNP10 link |
| | negotiation |
|------------------------------------------------------------|
| Bit | Value | Function |
|-----------+-------+----------------------------------------|
| 2 - 0 | 0 | Not used |
|-----------+-------+----------------------------------------|
| 4, 3 | » 00 | 39ms make/61ms break at 10pps |
|-----------+-------+----------------------------------------|
| 5 | 0 | Not used |
|-----------+-------+----------------------------------------|
| 7, 6 | » 00 | Link will be negotiated at highest |
| | | possible speed |
| | 01 | |
| | | Link will be negotiated at 1200bps |
| | 10 | |
| | | Link will be negotiated at 4800bps |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S31 |
|------------------------------------------------------------|
| Format | AT [cmds] S31=n [cmds] |
|-----------------+------------------------------------------|
| Default: | 2 |
|-----------------+------------------------------------------|
| Range: | 0-10 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Controls auto-baud function and result |
| | codes |
|------------------------------------------------------------|
| Bit | Value | Function |
|-----------+-------+----------------------------------------|
| 0 | 0 | Not used |
|-----------+-------+----------------------------------------|
| 1 | 0 | Auto-baud disabled |
| | | |
| | » 1 | Auto-baud enabled |
|-----------+-------+----------------------------------------|
| 3, 2 | » 00 | DTE speed displayed in result codes |
| | | |
| | 01 | Extended result codes enabled; DCE |
| | | speed displayed in result codes. |
| | 10 | |
| | | DCE speed displayed in result codes |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S40 |
|------------------------------------------------------------|
| Format | AT [cmds] S40=n [cmds] |
|-----------------+------------------------------------------|
| Default: | 105 |
|-----------------+------------------------------------------|
| Range: | 0-239 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Controls power level and break handling; |
| | selects MNP extended services, link |
| | negotiation, and block size |
|------------------------------------------------------------|
| Bit | Value | Function |
|------------+-------+---------------------------------------|
| 1, 0 | 00 | MNP10 disabled |
| | | |
| | » 01 | MNP10 enabled |
| | | |
| | 10 | MNP10 enabled on originate mode only |
|------------+-------+---------------------------------------|
| 0 | 0 | MNP10 disabled |
| | | |
| | » 1 | MNP10 enabled |
|------------+-------+---------------------------------------|
| 1 | 0 | MNP10 at 2400 and 1200bps disabled |
| | | |
| | » 1 | MNP10 at 2400 and 1200bps enabled |
|------------+-------+---------------------------------------|
| 2 | » 0 | Power level adjustment disabled |
| | | |
| | 1 | Power level adjustment enabled |
|------------+-------+---------------------------------------|
| 5, 4, 3 | 000 | \K0 |
| | | |
| | 001 | \K1 |
| | | |
| | 010 | \K2 |
| | | |
| | 011 | \K3 |
| | | |
| | 100 | \K4 |
| | | |
| | » 101 | \K5 |
|------------+-------+---------------------------------------|
| 7, 6 | 00 | MNP block size is 64 characters |
| | | |
| | » 01 | MNP block size is 128 characters |
| | | |
| | 10 | MNP block size is 192 characters |
| | | |
| | 11 | MNP block size is 256 characters |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S41 |
|------------------------------------------------------------|
| Format | AT [cmds] S41=n [cmds] |
|-----------------+------------------------------------------|
| Default: | 195 |
|-----------------+------------------------------------------|
| Range: | 0-223 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Selects compression, auto-retrain, flow |
| | control, MNP mode, and |
| | fallback-V.22/22bbis |
|------------------------------------------------------------|
| Bit | Value | Function |
|-----------+--------+---------------------------------------|
| 1 - 0 | 00 | Data compression disabled |
| | | |
| | 01 | MNP5 enabled |
| | | |
| | 10 | V.42bis enabled |
| | | |
| | » 11 | MNP5 and V.42bis enabled |
|-----------+--------+---------------------------------------|
| 6, 2 | 00 | Auto-retrain disabled |
| | | |
| | 01 | Auto-retrain enabled |
| | | |
| | » 10 | Fallback/fall forward enabled |
| | | |
| | 11 | Auto-retrain enabled, modem will hang |
| | | up if EQM reaches hang up threshold |
|-----------+--------+---------------------------------------|
| 3 | » 0 | Flow control disabled |
| | | |
| | 1 | Flow control enabled |
|-----------+--------+---------------------------------------|
| 4 | » 0 | Stream mode for MNP |
| | | |
| | 1 | Block mode for MNP |
|-----------+--------+---------------------------------------|
| 5 | 0 | Not used |
|-----------+--------+---------------------------------------|
| 7 | 0 | MNP10 at 2400 and 1200bps disabled |
| | | |
| | » 1 | MNP10 at 2400 and 1200bps enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK SEND |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Bn [cmds] |
|--------------+---------------------------------------------|
| Default: | 3 |
|--------------+---------------------------------------------|
| Range: | 1-9 |
|--------------+---------------------------------------------|
| Unit: | .1 second |
|--------------+---------------------------------------------|
| Description: | Sends break to modem |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK TYPE |
|------------------------------------------------------------|
|Type: |Configuration |
|------------+-----------------------------------------------|
|Format: |AT [cmds] \Kn [cmds] |
|------------+-----------------------------------------------|
|Description:|Configures action of break signal |
|------------------------------------------------------------|
| Command | Break from DTE |Break from DTE| Break from |
| | | |remote modem |
| | Reliable/Normal | Direct mode | |
| | mode | | |
|-------------+-----------------+--------------+-------------|
| \K0 |Enter command |Send break to |Buffers |
| |mode, do not send|remote modem |cleared and |
| |break to remote |immediately, |break sent to|
| |modem |then enter |DTE |
| | |command mode | |
|-------------+-----------------+--------------+-------------|
| \K1 |Buffers cleared |Send break to |Buffers |
| |and break sent to|remote modem |cleared and |
| |remote modem |immediately, |break sent to|
| | |then enter |DTE |
| | |command mode | |
|-------------+-----------------+--------------+-------------|
| \K2 |Enter command |Send break to |Send break to|
| |mode, do not send|remote modem |DTE |
| |break to remote |immediately |immediately |
| |modem | | |
|-------------+-----------------+--------------+-------------|
| \K3 |Send break to |Send break to |Send break to|
| |remote modem |remote modem |DTE |
| |immediately |immediately, |immediately |
| | |then enter | |
| | |command mode | |
|-------------+-----------------+--------------+-------------|
| \K4 |Enter command |Send break to |Break sent |
| |mode, do not send|remote modem |with received|
| |break to remote |immediately |data to the |
| |modem | |DTE |
|-------------+-----------------+--------------+-------------|
|» \K5 |Send break with |Send break to |Break sent |
| |transmitted data |remote modem |with received|
| | |immediately |data to the |
| | | |DTE |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CELLULAR TRANSMISSION LEVEL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] @Mn [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 11-31 |
|--------------+---------------------------------------------|
| Unit: | -1dBm |
|--------------+---------------------------------------------|
| Description: | Sets the signal level for transmission |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| @M0 | -26dBm |
|--------------+---------------------------------------------|
| @M1 | -30dBm |
|--------------+---------------------------------------------|
| @M2-@M10 | -10dBm |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CELLULAR TRANSMISSION LEVEL |
|------------------------------------------------------------|
| Format | AT [cmds] S201=n [cmds] |
|-----------------+------------------------------------------|
| Default: | 58 |
|-----------------+------------------------------------------|
| Range: | 0-63 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Controls cellular transmission level and |
| | compromise equalizer |
|------------------------------------------------------------|
| Bit | Value | Function |
|-----------+--------+---------------------------------------|
| 4 - 0 | 00000 | Sets cellular transmit level level to |
| | | -26dBm |
| | 00001 | |
| | | Sets cellular transmit level level to |
| | 00010 | -30dBm |
| | | |
| | ... | Sets cellular transmit level level to |
| | | -10dBm |
| | 01010 | |
| | | ... |
| | 01011 | |
| | | Sets cellular transmit level level to |
| | ... | -10dBm |
| | | |
| | » | Sets cellular transmit level level to |
| | 11010 | -11dBm |
| | | |
| | ... | ... |
| | | |
| | 11111 | Sets cellular transmit level level to |
| | | -26dBm |
| | | |
| | | ... |
| | | |
| | | Sets cellular transmit level level to |
| | | -31dBm |
|-----------+--------+---------------------------------------|
| 5 | 0 | Equalizer disabled |
| | | |
| | » 1 | Equalizer enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CHANGE DIAL CODES |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] *Zn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects dial codes, for International use |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| *Z0 | Enable dial code 0 |
|--------------+---------------------------------------------|
| *Z1 | Enable dial code 1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMPRESSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Cn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects data compression |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %C0 | Data compression disabled |
|--------------+---------------------------------------------|
| %C1 | MNP5 enabled |
|--------------+---------------------------------------------|
| %C2 | V.42bis enabled |
|--------------+---------------------------------------------|
| » %C3 | MNP5 and V.42bis enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMPROMISE EQUALIZER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] :En [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls V.32 compromise equalizer |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| :E0 | Equalizer disabled |
|--------------+---------------------------------------------|
| » :E1 | Equalizer enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECT MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Nn [cmds] |
|--------------+---------------------------------------------|
| 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 |
|--------------+---------------------------------------------|
| \N5 | MNP mode enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAL |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] D<#> [cmds] |
|--------------+---------------------------------------------|
| Description: | Dials telephone number according to any |
| | modifiers included in the string |
|--------------+---------------------------------------------|
| Modifier | Function |
|--------------+---------------------------------------------|
| J | Link will be negotiated at 1200bps |
|--------------+---------------------------------------------|
| K | Power level adjustment enabled |
|--------------+---------------------------------------------|
| L | Redials last valid dial string |
|--------------+---------------------------------------------|
| P | Pulse dialing enabled |
|--------------+---------------------------------------------|
| S=c | Number in memory location c dialed |
|--------------+---------------------------------------------|
| T | Tone dialing enabled |
|--------------+---------------------------------------------|
| W | Dialing resumed following dial tone |
| | detection |
|--------------+---------------------------------------------|
| @ | Modem waits for a ring-back signal followed |
| | by silence up to the time specified in S7 |
| | prior to executing the rest of the dial |
| | string. |
|--------------+---------------------------------------------|
| ! | Flash function initiated Modem commanded to |
| | go on-hook for specified time |
|--------------+---------------------------------------------|
| ; | Modem returned to command mode after |
| | dialing |
|--------------+---------------------------------------------|
| ^ | Disable calling tone |
|--------------+---------------------------------------------|
| & | Detect bong tone. Modem waits for time |
| | specified in S6 before returning NO |
| | DIALTONE. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISPLAY STORED NUMBERS |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \F [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays all stored phone numbers |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Gn [cmds] |
|--------------+---------------------------------------------|
| 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] |
|--------------+---------------------------------------------|
| 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] |
|--------------+---------------------------------------------|
| Default: | 17 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character used to represent XON. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LINE SIGNAL LEVEL |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %L [cmds] |
|--------------+---------------------------------------------|
| Range: | 9-43 |
|--------------+---------------------------------------------|
| Unit: | -1dBm |
|--------------+---------------------------------------------|
| Description: | Displays received line signal level |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MNP STREAM/BLOCK MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Ln [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects the transfer mode for MNP |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » \L0 | Stream mode for MNP enabled |
|--------------+---------------------------------------------|
| \L1 | Block mode for MNP enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MNP10 COMPRESSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] -Kn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects MNP10 data compression |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| -K0 | MNP10 disabled |
|--------------+---------------------------------------------|
| » -K1 | MNP10 enabled |
|--------------+---------------------------------------------|
| -K2 | MNP10 enabled on originate mode only |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MAXIMUM BLOCK SIZE FOR TRANSMISSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \An [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the maximum transmittable block size |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \A0 | MNP block size is 64 characters |
|--------------+---------------------------------------------|
| » \A1 | MNP block size is 128 characters |
|--------------+---------------------------------------------|
| \A2 | MNP block size is 192 characters |
|--------------+---------------------------------------------|
| \A3 | MNP block size is 256 characters |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MNP10 FALL-BACK |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] -Qn [cmds] |
|--------------+---------------------------------------------|
| Description: | Allows MNP10 to fall back to speeds slower |
| | than 4800bps |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| -Q0 | MNP10 at 2400 and 1200bps disabled |
|--------------+---------------------------------------------|
| » -Q1 | MNP10 at 2400 and 1200bps enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MNP10 LINK NEGOTIATION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] *Hn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the speed at which MNP10 link |
| | negotiation will occur |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » *H0 | Link will be negotiated at highest possible |
| | speed |
|--------------+---------------------------------------------|
| *H1 | Link will be negotiated at 1200bps |
|--------------+---------------------------------------------|
| *H2 | Link will be negotiated at 4800bps |
|------------------------------------------------------------|
| Note: *H2 not supported with )M1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MNP10 POWER LEVEL ADJUST |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] )Mn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls automatic transmit power level |
| | adjustment during MNP 10 link negotiation |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » )M0 | Power level adjustment disabled |
|--------------+---------------------------------------------|
| )M1 | Power level adjustment enabled |
|------------------------------------------------------------|
| Note: )M1 not supported with *H2 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MODULATION SELECTION DISPLAY |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] +MSUnidentified [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays modulation, automode, minimum rate |
| | and maximum rate settings |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MODULATION SELECTION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] +MS=xx,y,zzz,aaa [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets options for active protocol. The |
| | transfer rates specified by z and a must be |
| | valid for the protocol selected |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| x=0 | V.21 |
|--------------+---------------------------------------------|
| x=1 | V.22 |
|--------------+---------------------------------------------|
| x=2 | V.22bis |
|--------------+---------------------------------------------|
| x=3 | V.23 |
|--------------+---------------------------------------------|
| x=9 | V.32 |
|--------------+---------------------------------------------|
| x=10 | V.32bis |
|--------------+---------------------------------------------|
| » x=11 | V.34 |
|--------------+---------------------------------------------|
| x=64 | Bell 103A |
|--------------+---------------------------------------------|
| x=69 | Bell 212A |
|--------------+---------------------------------------------|
| x=74 | V.FC |
|--------------+---------------------------------------------|
| y=0 | Automode disabled |
|--------------+---------------------------------------------|
| » y=1 | Auto-detect highest speed enabled |
|--------------+---------------------------------------------|
| » z, a=300 | Set minimum or maximum transfer rate at |
| | 300bps, respectively |
|--------------+---------------------------------------------|
| z, a=1200 | Set minimum or maximum transfer rate at |
| | 1200bps, respectively |
|--------------+---------------------------------------------|
| z, a=2400 | Set minimum or maximum transfer rate at |
| | 2400bps, respectively |
|--------------+---------------------------------------------|
| z, a=4800 | Set minimum or maximum transfer rate at |
| | 4800bps, respectively |
|--------------+---------------------------------------------|
| z, a=7200 | Set minimum or maximum transfer rate at |
| | 7200bps, respectively |
|--------------+---------------------------------------------|
| z, a=9600 | Set minimum or maximum transfer rate at |
| | 9600bps, respectively |
|--------------+---------------------------------------------|
| z, a=12000 | Set minimum or maximum transfer rate at |
| | 12000bps, respectively |
|--------------+---------------------------------------------|
| z, a=14400 | Set minimum or maximum transfer rate at |
| | 14400bps, respectively |
|--------------+---------------------------------------------|
| z, a=16800 | Set minimum or maximum transfer rate at |
| | 16800bps, respectively |
|--------------+---------------------------------------------|
| z, a=19200 | Set minimum or maximum transfer rate at |
| | 19200bps, respectively |
|--------------+---------------------------------------------|
| z, a=21600 | Set minimum or maximum transfer rate at |
| | 21600bps, respectively |
|--------------+---------------------------------------------|
| z, a=24000 | Set minimum or maximum transfer rate at |
| | 24000bps, respectively |
|--------------+---------------------------------------------|
| z, a=26400 | Set minimum or maximum transfer rate at |
| | 26400bps, respectively |
|--------------+---------------------------------------------|
| » z, a=28800 | Set minimum or maximum transfer rate at |
| | 28800bps, respectively |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REPORT INFORMATION |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] In [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays modem properties |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| I0 | Reports OK |
|--------------+---------------------------------------------|
| I1 | Performs checksum of firmware ROM and |
| | displays results |
|--------------+---------------------------------------------|
| I2 | Performs checksum of firmware ROM and |
| | displays status (OK or ERROR) |
|--------------+---------------------------------------------|
| I3 | Reports firmware version, model code, |
| | interface type, and MCU model |
|--------------+---------------------------------------------|
| I4 | Reports identifier string |
|--------------+---------------------------------------------|
| I5 | Reports country code |
|--------------+---------------------------------------------|
| I6 | Reports modem data pump model, internal |
| | code revision and CEP internal code |
| | revision. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REPORT LINE SIGNAL QUALITY |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Q [cmds] |
|--------------+---------------------------------------------|
| Description: | Reports line signal quality. If the value |
| | is greater than 7, the modem will retrain. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SLEEP TIMER |
|------------------------------------------------------------|
| Format | AT [cmds] S24=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | 1 second |
|--------------+---------------------------------------------|
| Description: | Maximum duration of DTE and DCE inactivity |
| | allowed prior to initiating low-power sleep |
| | mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TEST MODES |
|------------------------------------------------------------|
| Format | AT [cmds] S16=n [cmds] |
|----------------+-------------------------------------------|
| Default: | 0 |
|----------------+-------------------------------------------|
| 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 |
|----------+-------+-----------------------------------------|
| 2, 1 | 0 | Not used |
|----------+-------+-----------------------------------------|
| 3 | 0 | Modem not in remote digital loopback |
| | | |
| | 1 | Remote digital loopback in progress |
|----------+-------+-----------------------------------------|
| 4 | 0 | Remote digital loopback not requested |
| | | |
| | 1 | Remote digital loopback requested |
|----------+-------+-----------------------------------------|
| 5 | 0 | Remote digital loopback w/ self-test |
| | | not in progress |
| | 1 | |
| | | Remote digital loopback w/ self-test in |
| | | progress |
|----------+-------+-----------------------------------------|
| 6 | 0 | Local analog loopback w/ self-test not |
| | | in progress |
| | 1 | |
| | | Local analog loopback w/ self-test in |
| | | progress |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.23 SPLIT BAUD MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Wn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls V.23 split baud mode |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » \W0 | V.23 split baud mode disabled |
|--------------+---------------------------------------------|
| \W1 | V.23 split baud mode enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.23 SPLIT-SPEED DIRECTION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Fn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects flow control |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %F1 | 75bps transmit/1200bps receive enabled |
|--------------+---------------------------------------------|
| %F2 | 75bps receive/1200bps transmit enabled |
+------------------------------------------------------------+