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# MOTOROLA, INC.
POWER 28.8 DATA/FAX MODEM
Modem Type Data (synchronous/asynchronous)/Fax
Maximum Data Rate 28.8Kbps
Maximum Fax Rate 14.4Kbps
Data Bus External
Fax Class Class I & II
Data Modulation Bell 103A/212A
Protocol
ITU-T V.21, V.22, V.22bis, V.23, V.32,
V.32bis, V.34
Fax Modulation ITU-T V.17, V.21CH2, V.27ter, V.29
Protocol
Error MNP5, V.42, V.42bis
Correction/Compression
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| Line out | CN1 | DC power | CN4 |
|------------------+----------+-------------------+----------|
| Line in | CN2 | Power switch | SW1 |
|------------------+----------+-------------------+----------|
| RS-232/422 | CN3 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FACTORY RESET |
|------------------------------------------------------------|
| Mode | SW2 |
|-------------------------------+----------------------------|
| Normal operation | On |
|-------------------------------+----------------------------|
| NVRAM clear | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|-----+-------+----------+-----------------------------------|
| MR | Red | On | Power is on |
|-----+-------+----------+-----------------------------------|
| MR | Red | Off | Power is off |
|-----+-------+----------+-----------------------------------|
| MR | Red | Blinking | Modem is performing self-test |
|-----+-------+----------+-----------------------------------|
| TR | Red | On | DTR signal is high |
|-----+-------+----------+-----------------------------------|
| TR | Red | Off | DTR signal is low |
|-----+-------+----------+-----------------------------------|
| CD | Red | On | Carrier signal detected |
|-----+-------+----------+-----------------------------------|
| CD | Red | Off | Carrier signal not detected |
|-----+-------+----------+-----------------------------------|
| CD | Red | Blinking | Modem is being configured |
| | | | remotely |
|-----+-------+----------+-----------------------------------|
| 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 |
|-----+-------+----------+-----------------------------------|
| AA | Red | On | Auto-answer enabled |
|-----+-------+----------+-----------------------------------|
| AA | Red | Off | Auto-answer disabled |
|-----+-------+----------+-----------------------------------|
| AA | Red | Blinking | Phone is ringing |
|-----+-------+----------+-----------------------------------|
| OH | Red | On | Modem is off-hook |
|-----+-------+----------+-----------------------------------|
| OH | Red | Off | Modem is on-hook |
|-----+-------+----------+-----------------------------------|
| HS | Red | On | Modem is operating at 16.8Kbps or |
| | | | faster |
|-----+-------+----------+-----------------------------------|
| HS | Red | Off | Modem is operating between |
| | | | 4800bps and 14.4Kbps |
|-----+-------+----------+-----------------------------------|
| HS | Red | Blinking | Modem is operating at 2400bps or |
| | | | slower |
+------------------------------------------------------------+
Proprietary AT Command Set
+------------------------------------------------------------+
| AUTO-RELIABLE FALLBACK CHARACTER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %An [cmds] |
|--------------+---------------------------------------------|
| Example: | AT%A20<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 |
|--------------+---------------------------------------------|
| » \C0 | Data is discarded. |
|--------------+---------------------------------------------|
| \C1 | Data is buffered. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Kn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \K1 <CR> |
|--------------+---------------------------------------------|
| Description: | Configures action of break signal. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \K1 | Buffers cleared and break sent to remote |
| | modem. |
|--------------+---------------------------------------------|
| \K3 | Send break to remote modem immediately. |
|--------------+---------------------------------------------|
| \K5 | Send break with transmitted data. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK SEND |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Bn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \B50 O<CR> |
|--------------+---------------------------------------------|
| Default: | 35 |
|--------------+---------------------------------------------|
| Range: | 1-255 |
|--------------+---------------------------------------------|
| Unit: | 20ms |
|--------------+---------------------------------------------|
| Description: | Sends break to modem. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CALLER ID |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] *IDn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT *ID1<CR> |
|--------------+---------------------------------------------|
| Description: | Controls the Caller ID function. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » *ID0 | Caller ID disabled. |
|--------------+---------------------------------------------|
| *ID1 | Caller ID enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CD SIGNAL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Cn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &C3 *RS1 *SR1<CR> |
|--------------+---------------------------------------------|
| Description: | Configures the behavior of the carrier |
| | detect signal. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &C0 | CD forced high. |
|--------------+---------------------------------------------|
| » &C1 | CD normal. |
|--------------+---------------------------------------------|
| &C2 | CD forced high except during disconnect. |
|--------------+---------------------------------------------|
| &C3 | CD follows remote RTS signal. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMMAND SET |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] *NTn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT *NT0<CR> |
|--------------+---------------------------------------------|
| Description: | Disables the AT command set. |
|--------------+---------------------------------------------|
| Note: | To re-enable the command set, power down |
| | the modem and then cycle power seven times. |
| | The modem must remain powered on each time |
| | at least one second but not more than five. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| *NT0 | Command set disabled. |
|--------------+---------------------------------------------|
| » *NT1 | Command set enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMPRESSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT %Cn |
|--------------+---------------------------------------------|
| Example: | AT *EC0 %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 | Direct mode enabled. |
|--------------+---------------------------------------------|
| \N6 | LAP-M mode with fallback to MNP enabled. |
|--------------+---------------------------------------------|
| » \N7 | LAP-M mode with fallback to MNP and normal |
| | modes enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECTION SPEED LOWER LIMIT |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Ln [cmds] |
|--------------+---------------------------------------------|
| Example: | AT %L3 %B14 \J0<CR> |
|--------------+---------------------------------------------|
| Description: | Sets slowest allowed connection speed. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » %L0 | Disabled. |
|--------------+---------------------------------------------|
| %L2 | Select 1200bps minimum speed. |
|--------------+---------------------------------------------|
| %L3 | Select 2400bps minimum speed. |
|--------------+---------------------------------------------|
| %L4 | Select 4800bps minimum speed. |
|--------------+---------------------------------------------|
| %L5 | Select 9600bps uncoded minimum speed. |
|--------------+---------------------------------------------|
| %L6 | Select 9600bps minimum speed. |
|--------------+---------------------------------------------|
| %L7 | Select 7200bps minimum speed. |
|--------------+---------------------------------------------|
| %L8 | Select 12Kbps minimum speed. |
|--------------+---------------------------------------------|
| %L9 | Select 14.4Kbps minimum speed. |
|--------------+---------------------------------------------|
| %L10 | Select 600bps minimum speed. |
|--------------+---------------------------------------------|
| %L11 | Select 16.8Kbps minimum speed. |
|--------------+---------------------------------------------|
| %L12 | Select 19.2Kbps minimum speed. |
|--------------+---------------------------------------------|
| %L13 | Select 21.6Kbps minimum speed. |
|--------------+---------------------------------------------|
| %L14 | Select 24Kbps minimum speed. |
|--------------+---------------------------------------------|
| %L15 | Select 26.4Kbps minimum speed. |
|--------------+---------------------------------------------|
| %L16 | Select 28.8Kbps minimum speed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECTION SPEED UPPER LIMIT |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Bn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT %L3 %B14 \J0<CR> |
|--------------+---------------------------------------------|
| Description: | Sets fastest allowed connection speed. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %B0 | Follow serial port speed. |
|--------------+---------------------------------------------|
| %B1 | Select 300bps maximum speed. |
|--------------+---------------------------------------------|
| %B2 | Select 1200bps maximum speed. |
|--------------+---------------------------------------------|
| %B3 | Select 2400bps maximum speed. |
|--------------+---------------------------------------------|
| %B4 | Select 4800bps maximum speed. |
|--------------+---------------------------------------------|
| %B5 | Select 9600bps uncoded maximum speed. |
|--------------+---------------------------------------------|
| %B6 | Select 9600bps maximum speed. |
|--------------+---------------------------------------------|
| %B7 | Select 7200bps maximum speed. |
|--------------+---------------------------------------------|
| %B8 | Select 12Kbps maximum speed. |
|--------------+---------------------------------------------|
| » %B9 | Select 14.4Kbps maximum speed. |
|--------------+---------------------------------------------|
| %B10 | Select 600bps maximum speed. |
|--------------+---------------------------------------------|
| %B11 | Select 16.8Kbps maximum speed. |
|--------------+---------------------------------------------|
| %B12 | Select 19.2Kbps maximum speed. |
|--------------+---------------------------------------------|
| %B13 | Select 21.6Kbps maximum speed. |
|--------------+---------------------------------------------|
| %B14 | Select 24Kbps maximum speed. |
|--------------+---------------------------------------------|
| %B15 | Select 26.4Kbps maximum speed. |
|--------------+---------------------------------------------|
| %B16 | Select 28.8Kbps maximum speed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CTS SIGNAL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Rn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &R0<CR> |
|--------------+---------------------------------------------|
| Description: | Selects the function of the CTS signal. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &R0 | CTS normal. |
|--------------+---------------------------------------------|
| » &R1 | CTS forced high. |
|--------------+---------------------------------------------|
| &R2 | CTS follows CD. |
|--------------+---------------------------------------------|
| &R9 | CTS follows RTS. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISCONNECT BUFFER DELAY |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Dn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT %D0<CR> |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | 1 minute |
|--------------+---------------------------------------------|
| Description: | Configures how long the modem will wait to |
| | disconnect if there is data in the transmit |
| | or receive buffers. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISPLAY STORED NUMBERS |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] *ND [cmds] |
|--------------+---------------------------------------------|
| Example: | AT*CN3,555-1212 *ND<CR> |
|--------------+---------------------------------------------|
| Description: | Displays all stored phone numbers. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DSR SIGNAL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Sn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &S0<CR> |
|--------------+---------------------------------------------|
| Description: | Selects the function of the DSR signal. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » &S0 | DSR forced high. |
|--------------+---------------------------------------------|
| &S1 | DSR normal. |
|--------------+---------------------------------------------|
| &S2 | DSR normal, except forced low on |
| | disconnect. |
|--------------+---------------------------------------------|
| &S3 | DSR follows OH. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DTR SIGNAL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Dn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &D1<CR> |
|--------------+---------------------------------------------|
| Description: | Configures the behavior of the Data |
| | Terminal Ready signal. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &D0 | DTR forced high. |
|--------------+---------------------------------------------|
| &D1 | Modem will enter command mode on low DTR. |
|--------------+---------------------------------------------|
| » &D2 | Modem will disconnect on low DTR. |
|--------------+---------------------------------------------|
| &D3 | Modem will disconnect and reset on low DTR. |
|--------------+---------------------------------------------|
| &D9 | DTR dialing enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| EXTENDED RESULT CODES |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Vn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \V1 %C1<CR> |
|--------------+---------------------------------------------|
| Description: | Selects extended result codes. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \V0 | Extended result codes disabled, DTE speed |
| | reported. |
|--------------+---------------------------------------------|
| \V1 | Protocol result codes enabled, DTE speed |
| | reported. |
|--------------+---------------------------------------------|
| \V2 | Extended result codes disabled, DCE speed |
| | reported. |
|--------------+---------------------------------------------|
| \V3 | Protocol result codes enabled, DCE speed |
| | reported. |
|--------------+---------------------------------------------|
| » \V4 | Protocol and modulation result codes |
| | enabled, DCE speed reported. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Gn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT G1 &M0<CR> |
|--------------+---------------------------------------------|
| Description: | Selects modem port flow control. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » \G0 | Flow control disabled. |
|--------------+---------------------------------------------|
| \G1 | Flow control enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL CHARACTER - XOFF FROM TERMINAL |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S45=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS45=22<CR> |
|--------------+---------------------------------------------|
| Default: | 19 |
|--------------+---------------------------------------------|
| Range: | 0-127 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character the terminal sends to |
| | represent XOFF. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL CHARACTER - XON FROM TERMINAL |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S44=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS44=20<CR> |
|--------------+---------------------------------------------|
| Default: | 17 |
|--------------+---------------------------------------------|
| Range: | 0-127 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character the terminal sends to |
| | represent XON. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL CHARACTER - XOFF TO TERMINAL |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S50=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS50=23<CR> |
|--------------+---------------------------------------------|
| Default: | 19 |
|--------------+---------------------------------------------|
| Range: | 0-127 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character the modem sends to |
| | represent XOFF. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL CHARACTER - XON TO TERMINAL |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S49=n [cmds] |
|--------------+---------------------------------------------|
| Example: | ATS49=21<CR> |
|--------------+---------------------------------------------|
| Default: | 17 |
|--------------+---------------------------------------------|
| Range: | 0-127 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character the modem sends to |
| | represent XON. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 | Bidirectional XON/XOFF flow control |
| | enabled. |
|--------------+---------------------------------------------|
| \Q2 | CTS flow control by DCE enabled. |
|--------------+---------------------------------------------|
| » \Q3 | Bidirectional CTS/RTS flow control enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FORCE RETRAIN |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] *RRn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT *RR14 O<CR> |
|--------------+---------------------------------------------|
| Description: | Forces the modem to attempt to retrain to |
| | the selected speed. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| *RR0 | Attempt 2400bps speed. |
|--------------+---------------------------------------------|
| *RR1 | Attempt 4800bps speed. |
|--------------+---------------------------------------------|
| *RR2 | Attempt 7200bps speed. |
|--------------+---------------------------------------------|
| *RR3 | Attempt 9600bps speed. |
|--------------+---------------------------------------------|
| *RR4 | Attempt 12Kbps speed. |
|--------------+---------------------------------------------|
| *RR5 | Attempt 14.4Kbps speed. |
|--------------+---------------------------------------------|
| *RR6 | Attempt 16.8Kbps speed. |
|--------------+---------------------------------------------|
| *RR7 | Attempt 19.2Kbps speed. |
|--------------+---------------------------------------------|
| *RR8 | Attempt 21.6Kbps speed. |
|--------------+---------------------------------------------|
| *RR9 | Attempt 24Kbps speed. |
|--------------+---------------------------------------------|
| *RR10 | Attempt 26.4Kbps speed. |
|--------------+---------------------------------------------|
| *RR11 | Attempt 28.8Kbps speed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| HANG UP MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Hn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT H3 O<CR> |
|--------------+---------------------------------------------|
| Description: | Selects how the modem will hang up. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » H2 | Set hang up mode to normal on next ATH |
| | command. |
|--------------+---------------------------------------------|
| H3 | Set hang up mode to fast on next ATH |
| | command. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| HELP SCREENS |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT $H=xxxx |
|--------------+---------------------------------------------|
| Example: | AT $H=MNP<CR> |
|--------------+---------------------------------------------|
| Description: | Shows modem help screens. If a string is |
| | included as shown in the example, the modem |
| | will perform a search for the string; |
| | otherwise, the whole help section will be |
| | displayed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INACTIVITY TIMER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Tn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT\T20<CR> |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| 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 | 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. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PROTOCOL/SPEED |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] *MMn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT *MN6 *MX14 *MM11<CR> |
|--------------+---------------------------------------------|
| Description: | Selects the current protocol. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| *MM0 | Selects all protocols. |
|--------------+---------------------------------------------|
| *MM1 | Selects V.21 only. |
|--------------+---------------------------------------------|
| *MM2 | Selects Bell 103 only. |
|--------------+---------------------------------------------|
| *MM3 | Selects V.23 only. |
|--------------+---------------------------------------------|
| *MM4 | Selects Bell 212 only. |
|--------------+---------------------------------------------|
| *MM5 | Selects V.22bis only. |
|--------------+---------------------------------------------|
| *MM11 | Selects V.32bis only. |
|--------------+---------------------------------------------|
| *MM12 | Selects V.34 only. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REDIAL DISABLE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] *DNn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT *DN1<CR> |
|--------------+---------------------------------------------|
| Description: | Disables the ability to redial the last |
| | number with A/. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » *DN0 | A/ enabled. |
|--------------+---------------------------------------------|
| *DN1 | A/ disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REMOTE CONFIGURATION END |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] *RQn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT *RQ0 D555-1212<CR> |
|--------------+---------------------------------------------|
| Description: | Ends an active remote configuration |
| | session. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| *RQ0 | Quit and save changes. |
|--------------+---------------------------------------------|
| *RQ1 | Quit and discard changes. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REMOTE CONFIGURATION PARITY |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] *RFn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT *RB16 *RF5<CR> |
|--------------+---------------------------------------------|
| Description: | Sets remote computer’s parity in remote |
| | configuration mode. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| *RF0 | Use 7 data bits, MARK parity, and one stop |
| | bit. |
|--------------+---------------------------------------------|
| *RF1 | Use 7 data bits, no parity, and two stop |
| | bits. |
|--------------+---------------------------------------------|
| *RF2 | Use 7 data bits, odd parity, and one stop |
| | bit. |
|--------------+---------------------------------------------|
| *RF3 | Use 7 data bits, even parity, and one stop |
| | bit. |
|--------------+---------------------------------------------|
| *RF4 | Use 8 data bits, MARK parity, and one stop |
| | bit. |
|--------------+---------------------------------------------|
| *RF5 | Use 8 data bits, no parity, and one stop |
| | bit. |
|--------------+---------------------------------------------|
| *RF6 | Use 8 data bits, odd parity, and one stop |
| | bit. |
|--------------+---------------------------------------------|
| *RF7 | Use 8 data bits, even parity, and one stop |
| | bit. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REMOTE CONFIGURATION PASSWORD |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %P=nnnn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT %P=102475 D555-1212<CR> |
|--------------+---------------------------------------------|
| Default: | N/A |
|--------------+---------------------------------------------|
| Range: | 0-99999999, D, <none> |
|--------------+---------------------------------------------|
| Description: | Sets the security code for remote |
| | configuration sessions. If nnnn is omitted, |
| | the code will be cleared; if a D is given, |
| | remote configuration is disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REMOTE CONFIGURATION PERMISSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] *RAn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT *RA0 D555-1212<CR> |
|--------------+---------------------------------------------|
| Description: | Selects whether remote modems may configure |
| | the local modem. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| *RA0 | Remote configuration requests will be |
| | denied. |
|--------------+---------------------------------------------|
| *RA1 | Remote configuration requests will be |
| | allowed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REMOTE CONFIGURATION SERIAL PORT SPEED |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] *RBn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT *RB16 *RF5<CR> |
|--------------+---------------------------------------------|
| Description: | Sets remote computer’s serial port speed in |
| | remote configuration mode. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| *RB0 | Sets 300bps speed. |
|--------------+---------------------------------------------|
| *RB1 | Sets 600bps speed. |
|--------------+---------------------------------------------|
| *RB2 | Sets 1200bps speed. |
|--------------+---------------------------------------------|
| *RB3 | Sets 2400bps speed. |
|--------------+---------------------------------------------|
| *RB4 | Sets 4800bps speed. |
|--------------+---------------------------------------------|
| *RB5 | Sets 7200bps speed. |
|--------------+---------------------------------------------|
| *RB6 | Sets 9600bps speed. |
|--------------+---------------------------------------------|
| *RB7 | Sets 12Kbps speed. |
|--------------+---------------------------------------------|
| *RB8 | Sets 14.4Kbps speed. |
|--------------+---------------------------------------------|
| *RB9 | Sets 16.8Kbps speed. |
|--------------+---------------------------------------------|
| *RB10 | Sets 19.2Kbps speed. |
|--------------+---------------------------------------------|
| *RB11 | Sets 21.6Kbps speed. |
|--------------+---------------------------------------------|
| *RB12 | Sets 24Kbps speed. |
|--------------+---------------------------------------------|
| *RB13 | Sets 26.4Kbps speed. |
|--------------+---------------------------------------------|
| *RB14 | Sets 28.8Kbps speed. |
|--------------+---------------------------------------------|
| *RB15 | Sets 38.4Kbps speed. |
|--------------+---------------------------------------------|
| *RB16 | Sets 57.6Kbps speed. |
|--------------+---------------------------------------------|
| *RB17 | Sets 115.2Kbps speed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REPORT INFORMATION |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] In [cmds] |
|--------------+---------------------------------------------|
| Example: | AT I3 &V1 %V<CR> |
|--------------+---------------------------------------------|
| Description: | Displays modem properties. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| I0 | Reports modem model and speed. |
|--------------+---------------------------------------------|
| I1 | Reports checksum number. |
|--------------+---------------------------------------------|
| I3 | Reports firmware version. |
|--------------+---------------------------------------------|
| I4 | Reports feature code. |
|--------------+---------------------------------------------|
| I5 | Reports reason for last disconnect. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REPORT INFORMATION AND CONFIGURATION PROFILE |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Vn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT I3 &V1 %V<CR> |
|--------------+---------------------------------------------|
| Description: | Reports configuration profiles and other |
| | information. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &V0 | Report configuration profiles. |
|--------------+---------------------------------------------|
| &V1 | Report connection status and internal modem |
| | information. |
|--------------+---------------------------------------------|
| &V2 | Report active configuration profile. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REPORT PRODUCT VERSION |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %V [cmds] |
|--------------+---------------------------------------------|
| Example: | AT I3 &V1 %V<CR> |
|--------------+---------------------------------------------|
| Description: | Reports product version. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REPORT SERIAL NUMBER |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $V [cmds] |
|--------------+---------------------------------------------|
| Example: | AT I3 &V1 $V<CR> |
|--------------+---------------------------------------------|
| Description: | Reports product serial number. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RETRAIN SENSITIVITY |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Rn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT &C3 %R1<CR> |
|--------------+---------------------------------------------|
| Description: | Sets how poor line conditions must be |
| | before the modem will initiate a retrain. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » %R0 | Modem will not initiate retrain. |
|--------------+---------------------------------------------|
| %R1 | Modem will initiate retrain when the Bit |
| | Error Rate exceeds 10-5 for eight seconds, |
| | or for one second in V.22bis mode. |
|--------------+---------------------------------------------|
| %R2 | Modem will initiate retrain when the Bit |
| | Error Rate exceeds 10-4 for eight seconds, |
| | or for one second in V.22bis mode. |
|--------------+---------------------------------------------|
| %R3 | Modem will initiate retrain when the Bit |
| | Error Rate exceeds 10-3 for eight seconds, |
| | or for one second in V.22bis mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RI SIGNAL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Rn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \R0 Q0<CR> |
|--------------+---------------------------------------------|
| Description: | Controls the behavior of the Ring Indicator |
| | signal. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \R0 | RI signal high during rings, and forced |
| | high for duration of call. |
|--------------+---------------------------------------------|
| » \R1 | RI signal high during rings only. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SECURITY - CALLBACK DELAY |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S74=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S74=30<CR> |
|--------------+---------------------------------------------|
| Default: | 15 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | 1 second |
|--------------+---------------------------------------------|
| Description: | Configures how long the modem will wait to |
| | execute a callback sequence after the user |
| | has disconnected. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SECURITY - CALLBACK NUMBER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $Cn=<#> [cmds] |
|--------------+---------------------------------------------|
| Example: | AT $L0=3 $C0=1(303)443-3388<CR> |
|--------------+---------------------------------------------|
| Description: | Sets the callback number for user number n. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SECURITY - CALLBACK RETRY |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S75=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S75=5<CR> |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | 1 redial |
|--------------+---------------------------------------------|
| Description: | Sets how many times the modem will attempt |
| | to execute a callback if the first call |
| | fails. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SECURITY - CALLBACK RETRY DELAY |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S76=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S76=60<CR> |
|--------------+---------------------------------------------|
| Default: | 15 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | 1 second |
|--------------+---------------------------------------------|
| Description: | Configures how long the modem will wait to |
| | execute another callback sequence after one |
| | has failed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SECURITY CHECK |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $D? [cmds] |
| | |
| | AT [cmds] $E? [cmds] |
|--------------+---------------------------------------------|
| Example: | AT $DR $D?<CR> |
|--------------+---------------------------------------------|
| Description: | Reports whether security is enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SECURITY DISABLE |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $D=xxxx |
|--------------+---------------------------------------------|
| Example: | AT $D=MicroHouse<CR> |
|--------------+---------------------------------------------|
| Description: | Disables security. A password must be |
| | specified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SECURITY ENABLE |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $EH=xxxx |
|--------------+---------------------------------------------|
| Example: | AT $EH=SuperSecret<CR> |
|--------------+---------------------------------------------|
| Description: | Enables security. The superuser password |
| | must be specified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SECURITY - DELETE USER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $Rn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT $R3<CR> |
|--------------+---------------------------------------------|
| Description: | Deletes the user number n. User IDs 0 and 1 |
| | cannot be deleted. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SECURITY - FAILED LOGIN ATTEMPT COUNTERS |
|------------------------------------------------------------|
| Type: | Configuration/Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $Mn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT $M $M*<CR> |
|--------------+---------------------------------------------|
| Description: | Displays or clears the counters for failed |
| | login attempts. If a number is specified, |
| | the counter will be reset for that user. If |
| | an * follows, all counters will be cleared. |
| | If no character follows, the counters will |
| | be displayed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SECURITY - FAILED LOGIN ATTEMPT MAXIMUM |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S77=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S77=3<CR> |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | 1 attempt |
|--------------+---------------------------------------------|
| Description: | Sets the maximum number of failed logins |
| | the modem will accept until it disconnects. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SECURITY LEVEL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $Lm=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT $L0=3 $C0=1(303)443-3388<CR> |
|--------------+---------------------------------------------|
| Description: | Sets the security level for user number m. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| $Lm=1 | Modem prompts for a user ID and password on |
| | connection. |
|--------------+---------------------------------------------|
| $Lm=2 | Modem prompts for a user ID and password on |
| | connection, then modem begins callback |
| | sequence. |
|--------------+---------------------------------------------|
| $Lm=3 | Modem prompts for a user ID and password on |
| | connection, then modem begins callback |
| | sequence. When modem reconnects, it prompts |
| | for a user ID and password again. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SECURITY LOGIN |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $n=xxxx [cmds] |
|--------------+---------------------------------------------|
| Example: | AT $1=MicroHouse<CR> |
|--------------+---------------------------------------------|
| Description: | Logs into modem, from the local machine or |
| | remotely. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SECURITY LOGOUT |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $$ [cmds] |
|--------------+---------------------------------------------|
| Example: | AT $$<CR> |
|--------------+---------------------------------------------|
| Description: | Logs out from the modem. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SECURITY PASSWORD |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $Pn=xxxx$xxxx |
|--------------+---------------------------------------------|
| Example: | AT $P0=SuperSecret$SuperSecret<CR> |
|--------------+---------------------------------------------|
| Description: | Sets the password for user number n to |
| | xxxx. User number 0 is the superuser. The |
| | password must be between 4 and 34 |
| | characters inclusive. The $ character may |
| | not be used. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SECURITY - PASSWORD TIME |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S73=n [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S73=10<CR> |
|--------------+---------------------------------------------|
| Default: | Unidentified |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | 1 second |
|--------------+---------------------------------------------|
| Description: | Configures how long the modem will wait for |
| | a password when in secure mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SECURITY - REPORT SUPERUSER STATUS |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $Sn? [cmds] |
|--------------+---------------------------------------------|
| Example: | AT $S3?<CR> |
|--------------+---------------------------------------------|
| Description: | Reports whether user n has superuser |
| | status. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SECURITY - REPORT USER SETTINGS |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $In [cmds] |
|--------------+---------------------------------------------|
| Example: | AT $I3<CR> |
|--------------+---------------------------------------------|
| Description: | Reports security level and callback number |
| | for user n. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SECURITY RESET |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $F=xxxx$xxxx |
|--------------+---------------------------------------------|
| Example: | AT $F=SuperSecret$SuperSecret<CR> |
|--------------+---------------------------------------------|
| Description: | Resets the high security options to their |
| | factory defaults. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SECURITY - SUPERUSER MODE |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $S=xxxx [cmds] |
|--------------+---------------------------------------------|
| Example: | AT $S=SuperSecret<CR> |
|--------------+---------------------------------------------|
| Description: | Attempts to enter superuser mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| STATUS REGISTER HEXADECIMAL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | Write: AT [cmds] Sn=^hh [cmds] |
| | |
| | Read: AT [cmds] Sn?^ [cmds] |
|--------------+---------------------------------------------|
| Example: | AT S99=^3F S99?^<CR> |
|--------------+---------------------------------------------|
| Description: | Sets register n to hexadecimal number hh or |
| | displays register n in hexadecimal. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SWITCHED LINE TRANSMISSION LEVEL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] *TDn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT *TD15<CR> |
|--------------+---------------------------------------------|
| Default: | 9 |
|--------------+---------------------------------------------|
| Range: | 9 - 30 |
|--------------+---------------------------------------------|
| Unit: | -1 dBm |
|--------------+---------------------------------------------|
| Description: | Sets the signal level for transmission when |
| | in switched line mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TEST MODE - BIDIRECTIONAL DIGITAL LOOPBACK TEST |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] *DGn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT *DG1<CR> |
|--------------+---------------------------------------------|
| Description: | Controls the bidirectional local digital |
| | loopback test mode. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » *DG0 | End loopback test. |
|--------------+---------------------------------------------|
| *DG1 | Begin loopback test. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.32 HANDSHAKE OPTIONS |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] *FTn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT *FT0<CR> |
|--------------+---------------------------------------------|
| Description: | Shortens V.32 and V.32bis handshake time. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » *FT0 | Normal handshake sequence. |
|--------------+---------------------------------------------|
| *FT1 | Training time is shortened by 2 seconds in |
| | V.32 and V.32bis modes. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.34 RETRAIN SENSITIVITY |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] *THn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT *MM12 *TH1<CR> |
|--------------+---------------------------------------------|
| Description: | Sets how poor line conditions must be |
| | before the modem will initiate a retrain |
| | when in V.34 mode. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| *TH0 | Modem will initiate retrain when the Bit |
| | Error Rate exceeds 10-6. |
|--------------+---------------------------------------------|
| *TH1 | Modem will initiate retrain when the Bit |
| | Error Rate exceeds 10-4. |
|--------------+---------------------------------------------|
| » *TH2 | Modem will initiate retrain when the Bit |
| | Error Rate exceeds 10-2. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.34 SPLIT BAUD MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] *ASn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT *AS1 <CR> |
|--------------+---------------------------------------------|
| Description: | Controls V.34 split baud mode. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| *AS0 | V.34 split baud mode disabled. |
|--------------+---------------------------------------------|
| » *AS1 | V.34 split baud mode enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.42 NEGOTIATION MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Mn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \M0 H1 DT555-1212<CR> |
|--------------+---------------------------------------------|
| Description: | Selects how the modem negotiates V.42 |
| | modulation during handshaking. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \M0 | Normal handshaking enabled. |
|--------------+---------------------------------------------|
| \M1 | Fast handshaking enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| XON/XOFF PASS-THROUGH |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Xn [cmds] |
|--------------+---------------------------------------------|
| Example: | AT \X7 O<CR> |
|--------------+---------------------------------------------|
| Description: | Selects whether XON/XOFF signals are sent |
| | to remote modem. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » \X0 | XON/XOFF signals trapped by local modem. |
|--------------+---------------------------------------------|
| \X1 | XON/XOFF passed through local modem. |
+------------------------------------------------------------+