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# MULTI-TECH SYSTEMS, INC.
MT1432MF, MT1432MG, MT1432MK, MT1432MU, MT1432MUI
Card Type Modem (asynchronous)
Chipset Multi-Tech Systems, Inc.
Maximum Data Rate 14.4Kbps
Maximum Fax Rate 14.4Kbps
Data Modulation Bell 103A, 113, 212A
ITU-T V.21 (MT1432MUI only), V.22,
V.22bis, V.23, V.32, V.32bis
Fax Modulation ITU-T V.17, V.21CH2, V.27ter, V.29
Error MNP5, V.42, V.42bis
Correction/Compression
Fax Class Class II
Data Bus Serial
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|--------------------+-------+-----------------------+-------|
| 9V DC power in | CN1 | Telephone line out | CN3 |
|--------------------+-------+-----------------------+-------|
| Serial port | CN2 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| POWER MODE |
|------------------------------------------------------------|
| Setting | SW1 |
|---------------------------------+--------------------------|
| Standby, wait for incoming call | Position 1 |
|---------------------------------+--------------------------|
| Off | Position 2 |
|---------------------------------+--------------------------|
| On | Position 3 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|------------+----------+------------+-----------------------|
| TD | Red | On | Modem is transmitting |
| | | | data |
|------------+----------+------------+-----------------------|
| TD | Red | Off | Modem is not |
| | | | transmitting data |
|------------+----------+------------+-----------------------|
| RD | Red | On | Modem is receiving |
| | | | data |
|------------+----------+------------+-----------------------|
| RD | Red | Off | Modem is not |
| | | | receiving data |
|------------+----------+------------+-----------------------|
| CD | Red | On | Carrier signal |
| | | | detected |
|------------+----------+------------+-----------------------|
| CD | Red | Off | Carrier signal not |
| | | | detected |
|------------------------------------------------------------|
| 14 | Color | 96 | Color | Condition |
| Status | | Status | | |
|--------+---------+--------+-------+------------------------|
| On | Red | On | Red | Modem connected at |
| | | | | 12Kbps in V.32bis |
|--------+---------+--------+-------+------------------------|
| Off | Red | On | Red | Modem connected at |
| | | | | 9600bps |
|--------+---------+--------+-------+------------------------|
| On | Red | Off | Red | Modem connected at |
| | | | | 14.4Kbps |
|--------+---------+--------+-------+------------------------|
| Off | Red | Off | Red | Modem connected at |
| | | | | slower than 9600bps |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) (CON'T) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|-----+-------+----------+-----------------------------------|
| 24 | Red | On | Modem connected at 2400bps |
|-----+-------+----------+-----------------------------------|
| 24 | Red | Off | Modem not connected at 2400bps |
|-----+-------+----------+-----------------------------------|
| 12 | Red | On | Modem connected at 1200bps |
|-----+-------+----------+-----------------------------------|
| 12 | Red | Off | Modem not connected at 1200bps |
|-----+-------+----------+-----------------------------------|
| OH | Red | On | Modem is off-hook |
|-----+-------+----------+-----------------------------------|
| OH | Red | Blinking | Modem is dialing in pulse mode |
|-----+-------+----------+-----------------------------------|
| OH | Red | Off | Modem is on-hook |
|-----+-------+----------+-----------------------------------|
| TR | Red | On | DTR signal is high |
|-----+-------+----------+-----------------------------------|
| TR | Red | Off | DTR signal is low |
|-----+-------+----------+-----------------------------------|
| EC | Red | On | Error correction enabled |
|-----+-------+----------+-----------------------------------|
| EC | Red | Blinking | Data compression enabled |
|-----+-------+----------+-----------------------------------|
| EC | Red | Off | Error correction disabled |
|-----+-------+----------+-----------------------------------|
| FX | Red | On | Modem is connected in FAX mode |
|-----+-------+----------+-----------------------------------|
| FX | Red | Off | Modem is not connected in FAX |
| | | | mode |
|-----+-------+----------+-----------------------------------|
| LB | Red | On | Battery is low (approx. 10 |
| | | | minutes left) |
|-----+-------+----------+-----------------------------------|
| LB | Red | Off | Battery is good |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SUPPORTED STANDARD COMMANDS |
|------------------------------------------------------------|
| Basic AT Commands |
|------------------------------------------------------------|
| +++, A/ |
|------------------------------------------------------------|
| A, B, D, E, H, M, O, P, T, V, X, Y, Z |
|------------------------------------------------------------|
| &D, &G, &P, &T |
|------------------------------------------------------------|
| S-Registers |
|------------------------------------------------------------|
| S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S25, S30 |
|------------------------------------------------------------|
| Note: See MHI help file for complete information. |
+------------------------------------------------------------+
Proprietary AT Command Set
+------------------------------------------------------------+
| AUTO-RELIABLE FALLBACK |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $Fn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects whether error correction can be |
| | disabled by a <CR> while handshaking. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| $F0 | Auto-reliable fallback disabled. |
|--------------+---------------------------------------------|
| í $F1 | Auto-reliable fallback enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO-RELIABLE TIME BUFFER CONFIGURATION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $An [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls the handling of incoming data |
| | during the auto-reliable time period. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í $A0 | Data is discarded. |
|--------------+---------------------------------------------|
| $A1 | Data is buffered. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK TIME |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S17=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 25 |
|--------------+---------------------------------------------|
| Range: | 0 - 255 |
|--------------+---------------------------------------------|
| Unit: | 10 mS |
|--------------+---------------------------------------------|
| Description: | Sets the length of the break signal that |
| | the modem will send. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CALLING TONE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $Tn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls the transmission of the calling |
| | tone while dialing. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| $T0 | Calling tone enabled. |
|--------------+---------------------------------------------|
| í $T1 | Calling tone disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMMAND SET |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Qn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects standard Hayes or custom command |
| | sets. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &Q0 | Multi-Tech custom command set enabled. |
|--------------+---------------------------------------------|
| &Q1 | Standard Hayes command set enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMPRESSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &En [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects data compression. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &E14 | Data compression disabled. |
|--------------+---------------------------------------------|
| í &E15 | Data compression enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMPRESSION MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #Ln [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects the active data compression |
| | protocols. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í #L0 | MNP and V.42 negotiation enabled. |
|--------------+---------------------------------------------|
| #L1 | MNP negotiation enabled. |
|--------------+---------------------------------------------|
| #L2 | V.42 negotiation enabled. |
|--------------+---------------------------------------------|
| #L3 | V.42 enabled, no negotiation. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CTS SIGNAL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Rn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls the behaviour of the CTS signal. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &R0 | CTS normal. |
|--------------+---------------------------------------------|
| í &R1 | CTS forced high. |
|--------------+---------------------------------------------|
| &R2 | CTS forced high except for 1 second at |
| | disconnect. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CTS, DCD, AND DSR DISCONNECT TIME |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S24=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 20 |
|--------------+---------------------------------------------|
| Range: | 0 - 255 |
|--------------+---------------------------------------------|
| Unit: | 50 mS |
|--------------+---------------------------------------------|
| Description: | Selects the amount of time that the CTS, |
| | DCD, and DSR signals will be forced low at |
| | disconnect if this option is selected by |
| | the &R, &C, and &S commands, respectively. |
| | See these commands for more information. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CTS/RTS SIGNALS |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &RFn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects whether the state of the CTS signal |
| | is dependent on the state of the RTS |
| | signal. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &RF0 | CTS follows RTS. |
|--------------+---------------------------------------------|
| í &RF1 | CTS is independent of RTS. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DATA FORMAT |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $EBn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects the data format of the serial port. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í $EB0 | Sets 10-bit mode. |
|--------------+---------------------------------------------|
| $EB1 | Sets 11-bit mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DCD SIGNAL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Cn [cmds] |
|--------------+---------------------------------------------|
| Description: | Configures the behavior of the carrier |
| | detect signal. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &C0 | CD forced high. |
|--------------+---------------------------------------------|
| í &C1 | CD normal. |
|--------------+---------------------------------------------|
| &C2 | CD forced high except during disconnect. |
|--------------+---------------------------------------------|
| &C4 | Modem resets on low CD. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAL STORED PHONE NUMBER |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Na [Nb, Nc...] |
|--------------+---------------------------------------------|
| Description: | Dials stored phone number(s). If the first |
| | number is busy, the modem will proceed to |
| | the next number in the list. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISPLAY INFORMATION |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] In [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays information requested about the |
| | modem. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| I0 | Displays product identification code. |
|--------------+---------------------------------------------|
| I1 | Displays firmware version. |
|--------------+---------------------------------------------|
| I2 | Displays product name. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISPLAY CONFIGURATION |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT Ln |
|--------------+---------------------------------------------|
| Description: | Displays the requested information about |
| | the modem's current configuration and |
| | command settings. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| L0 | Displays stored phone numbers. |
|--------------+---------------------------------------------|
| L5 | Displays all settings. |
|--------------+---------------------------------------------|
| L6 | Displays the values of all S-registers. |
|--------------+---------------------------------------------|
| L7 | Displays extended parameters. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DSR SIGNAL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Sn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls the behaviour of the DSR signal. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &S0 | DSR forced high. |
|--------------+---------------------------------------------|
| í &S1 | DSR normal. |
|--------------+---------------------------------------------|
| &S2 | DSR forced high except for 1 second at |
| | disconnect. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DSR/DCD SIGNALS |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &SFn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects whether the state of the DSR signal |
| | is dependent on the state of the DCD |
| | signal. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &SF0 | DSR follows DCD. |
|--------------+---------------------------------------------|
| &SF1 | DSR is independent of DCD. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ESCAPE SEQUENCE BUFFER SIZE |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S34=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 10 |
|--------------+---------------------------------------------|
| Range: | 0-60 |
|--------------+---------------------------------------------|
| Unit: | 1 byte |
|--------------+---------------------------------------------|
| Description: | Sets the size of the buffer used to store |
| | the command line during an escape sequence. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ESCAPE SEQUENCE - OUT OF BAND |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | <BREAK> AT [cmds]<CR> |
|--------------+---------------------------------------------|
| Description: | Puts the modem in Command Mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ESCAPE SEQUENCE TIMEOUT |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S32=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 20 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | 1 second |
|--------------+---------------------------------------------|
| Description: | Sets the maximum amount of time the modem |
| | will wait for a <CR> while executing an |
| | escape sequence. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ESCAPE SEQUENCE TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %En [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets type of command escape sequence the |
| | modem will recognise. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %E0 | Command escape disabled. |
|--------------+---------------------------------------------|
| í %E1 | TIES escape (+++AT...) |
|--------------+---------------------------------------------|
| %E2 | <BREAK> AT method. |
|--------------+---------------------------------------------|
| %E3 | Both TIES and BREAK methods. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ESCAPE SEQUENCE RESPONSE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %En [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the response that the modem will give |
| | to an escape sequence. |
|--------------+---------------------------------------------|
| %E4 | OK response to command escape disabled. |
|--------------+---------------------------------------------|
| í %E5 | OK response to command escape enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FACTORY DEFAULTS |
|------------------------------------------------------------|
| Type: | Immediate/Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Fn [cmds] |
|--------------+---------------------------------------------|
| Description: | Loads factory defaults, or sets write |
| | protect on NVRAM. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &F0 | Reloads defaults by setting. |
|--------------+---------------------------------------------|
| í &F8 | Sets &F to read factory defaults from ROM, |
| | and disables NVRAM write protect. |
|--------------+---------------------------------------------|
| &F9 | Sets &F to read defaults from NVRAM, and |
| | enables write-protect. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FALLBACK MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #Fn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets direction of fallback. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| #F0 | Fallback disabled. |
|--------------+---------------------------------------------|
| #F1 | Fallback from 14.4Kbps to 2400bps as line |
| | quality degrades. |
|--------------+---------------------------------------------|
| í #F2 | Fallback from 2400bps to 14.4Kbps as line |
| | quality improves. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &En [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects flow control. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &E12 | Flow control disabled. |
|--------------+---------------------------------------------|
| í &E13 | Flow control enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL - ENQ/ACK |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &En [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects Hewlett-Packard ENQ/ACK pacing. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &E8 | Enables Hewlett-Packard ENQ/ACK pacing. |
|--------------+---------------------------------------------|
| &E9 | Disables Hewlett-Packard ENQ/ACK pacing. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL IN NORMAL MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &En [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects whether the modem will use XON/XOFF |
| | flow control for non-error-correcting |
| | connections. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &E10 | XON/XOFF disabled for non-error-correcting |
| | connections. |
|--------------+---------------------------------------------|
| &E11 | XON/XOFF enabled for non-error-correcting |
| | connections. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &En [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the type of flow control used by |
| | modem. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &E3 | Flow control disabled. |
|--------------+---------------------------------------------|
| í &E4 | CTS/RTS flow control enabled. |
|--------------+---------------------------------------------|
| &E5 | XON/XOFF flow control enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| HANDSHAKE ATTEMPTS |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #An [cmds] |
|--------------+---------------------------------------------|
| Description: | Configures which speeds the modem may |
| | attempt to connect at during the initial |
| | handshake phase. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í #A0 | Attempts in order: 14.4Kbps, 9600bps, |
| | 4800bps, 2400bps, 1200bps, 300bps. |
|--------------+---------------------------------------------|
| #A1 | Attempts 14.4Kbps connection only. |
|--------------+---------------------------------------------|
| #A2 | Attempts in order: 14.4Kbps, 9600bps, |
| | 4800bps. |
|--------------+---------------------------------------------|
| #A3 | Attempts in order: 2400bps, 1200bps, |
| | 300bps. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| HELP SCREENS |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT $Hn |
|--------------+---------------------------------------------|
| Description: | Shows modem help screens. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| $H1 | Shows help screen 1. |
|--------------+---------------------------------------------|
| $H2 | Shows help screen 2. |
|--------------+---------------------------------------------|
| $H3 | Shows help screen 3. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LOCAL SERIAL PORT SPEED |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $SBnnn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets serial port speed. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| $SB300 | Sets 300bps speed. |
|--------------+---------------------------------------------|
| $SB1200 | Sets 1200bps speed. |
|--------------+---------------------------------------------|
| $SB2400 | Sets 2400bps speed. |
|--------------+---------------------------------------------|
| $SB4800 | Sets 4800bps speed. |
|--------------+---------------------------------------------|
| $SB9600 | Sets 9600bps speed. |
|--------------+---------------------------------------------|
| $SB19200 | Sets 19.2Kbps speed. |
|--------------+---------------------------------------------|
| $SB38400 | Sets 38.4Kbps speed. |
|--------------+---------------------------------------------|
| í $SB57600 | Sets 57.6Kbps speed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LOCK SERIAL PORT |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $BAn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets operation of serial port speed. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í $BA0 | Serial speed locked at rate set by $SB. |
|--------------+---------------------------------------------|
| $BA1 | Serial speed follows connect speed, |
| | ignoring $SB. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LINE SPEED |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT $MBnnn |
|--------------+---------------------------------------------|
| Description: | Sets the maximum allowable data exchange |
| | rate attempted during the handshaking |
| | process. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| $MB75 | Sets V.23 1200/75bps maximum connect speed. |
|--------------+---------------------------------------------|
| $MB300 | Sets 300bps maximum connect speed. |
|--------------+---------------------------------------------|
| $MB1200 | Sets 1200bps maximum connect speed. |
|--------------+---------------------------------------------|
| $MB2400 | Sets 2400bps maximum connect speed. |
|--------------+---------------------------------------------|
| $MB4800 | Sets 4800bps maximum connect speed. |
|--------------+---------------------------------------------|
| $MB9600 | Sets 9600bps maximum connect speed. |
|--------------+---------------------------------------------|
| í $MB14400 | Sets 14.4Kbps maximum connect speed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LOGIN PASSWORD |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #Ixxxx |
|--------------+---------------------------------------------|
| Description: | Sets the login password to xxxx. The |
| | password must be between 6 and 10 |
| | characters, case sensitive. It defaults to |
| | MULTI-TECH. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MAXIMUM BLOCK SIZE FOR TRANSMISSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &BSn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the maximum transmittable block size |
| | for MNP mode. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &BS0 | Maximum block size is 64 characters. |
|--------------+---------------------------------------------|
| í &BS1 | Maximum block size is 256 characters. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARITY |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #Pn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the parity of the serial port. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í #P0 | No parity. |
|--------------+---------------------------------------------|
| #P1 | Odd parity. |
|--------------+---------------------------------------------|
| #P2 | Even parity. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REDIAL |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | A: |
|--------------+---------------------------------------------|
| Description: | Redials the last number dialed until it is |
| | no longer busy |
|--------------+---------------------------------------------|
| Note: | Do not precede this command with AT or |
| | follow it with <CR> |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REMOTE CONFIGURATION CHARACTER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S13=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 37 |
|--------------+---------------------------------------------|
| Range: | 0 - 127 |
|--------------+---------------------------------------------|
| Unit: | 1 ASCII character |
|--------------+---------------------------------------------|
| Description: | Defines the character that when received |
| | three times within the guard time set by |
| | S12, will notify the modem that a remote |
| | configuration session has been requested by |
| | the remote modem. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RESULT CODES |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Qn [cmds] |
|--------------+---------------------------------------------|
| Description: | Enables modem to send result codes to the |
| | DTE. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í Q0 | Result codes enabled. |
|--------------+---------------------------------------------|
| Q1 | Result codes disabled. |
|--------------+---------------------------------------------|
| Q2 | Result codes sent in originate mode only. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RETRANSMIT FAIL ACTION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $Rn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets whether the modem gives up on a bad |
| | connection. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í $R0 | Hang up after 12 failed retransmissions. |
|--------------+---------------------------------------------|
| $R1 | Do not hang up after 12 failed |
| | retransmissions. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SETUP PASSWORD |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #Sxxxx |
|--------------+---------------------------------------------|
| Description: | Sets the setup password to xxxx. The |
| | password must be between 6 and 10 |
| | characters, case sensitive. It defaults to |
| | MODEMSETUP. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| STORE ACTIVE PROFILE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Wn [cmds] |
|--------------+---------------------------------------------|
| Description: | Writes the values for the active profile |
| | into the NVRAM. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &W0 | Write the active profile to stored profile |
| | 0 |
|--------------+---------------------------------------------|
| &W1 | Does not write active profile; modem will |
| | read factory defaults on power-up or reset. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TEST MODES |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Un |
|--------------+---------------------------------------------|
| Description: | Puts the modem into the selected test mode. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| U0 | Begin local analog loopback test in |
| | originate mode. |
|--------------+---------------------------------------------|
| U1 | Begin local analog loopback test in answer |
| | mode. |
|--------------+---------------------------------------------|
| U2 | Request remote digital loopback. |
|--------------+---------------------------------------------|
| U3 | Begin local digital loopback. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TRELLIS CODING |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #Tn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects whether the modem will use trellis |
| | coding. |
|------------------------------------------------------------|
| Command | Function |
|-----------------------+------------------------------------|
| #T0 | Trellis coding disabled. |
|-----------------------+------------------------------------|
| í #T1 | Trellis coding enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| UUCP SPOOFING |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $SPn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls the UUCP spoofing function. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í $SP0 | Spoofing disabled. |
|--------------+---------------------------------------------|
| $SP1 | Spoofing enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.42 MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &En [cmds] |
|--------------+---------------------------------------------|
| Description: | Configures the operation of V.42 mode. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| &E0 | Error correction disabled. |
|--------------+---------------------------------------------|
| í &E1 | V.42 set to auto-reliable. |
|--------------+---------------------------------------------|
| &E2 | V.42 set to reliable. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.42 WITH V.21 |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] $En [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects whether the modem will use V.42 |
| | error correction at V.21 300bps |
| | connections. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í $E0 | V.42 disabled at 300bps. |
|--------------+---------------------------------------------|
| $E1 | V.42 enabled at 300bps. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| XOFF MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #Xn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects how XOFF characters are sent. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í #X0 | Single XOFF character sent. |
|--------------+---------------------------------------------|
| #X1 | Multiple XOFF characters sent until DTE |
| | responds. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| XON/XOFF PASS-THROUGH |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &En [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects whether XON/XOFF signals are sent |
| | to remote modem. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í &E6 | XON/XOFF signals trapped by local modem. |
|--------------+---------------------------------------------|
| &E7 | XON/XOFF passed through local modem. |
+------------------------------------------------------------+