MULTITECH SYSTEMS, INC. ======================= MT1932BL/MT1932BLI/MT1932BL-MAC Modem Type Data (synchronous/asynchronous)/Fax Maximum Data Rate 19.2Kbps 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 AT&T V.32terbo Fax Modulation ITU-T V.17, V.21CH2, V.27ter, V.29 Protocol Error MNP2-5, V.42, V.42bis Correction/Compression +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |------------------+----------+-------------------+----------| | Line in | CN1 | DC power | CN4 | |------------------+----------+-------------------+----------| | Line out | CN2 | Volume | R1 | |------------------+----------+-------------------+----------| | RS-232/422 | CN3 | Power switch | SW4 | +------------------------------------------------------------+ +------------------------------------------------------------+ | ORIGINATE MODE | |------------------------------------------------------------| | Mode | SW3 | |-------------------------------+----------------------------| | Originate | Off | |-------------------------------+----------------------------| | Answer | On | +------------------------------------------------------------+ +------------------------------------------------------------+ | DTR MODE | |------------------------------------------------------------| | i Mode | SW1/1 | |-------------------------------+----------------------------| | i DTR normal | On | |-------------------------------+----------------------------| | i DTR forced high | Off | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLOW CONTROL | |------------------------------------------------------------| | i Mode | Async/Sync | SW1/2 | |-------------------------+-------------------+--------------| | i Hardware flow control | Async | On | |-------------------------+-------------------+--------------| | i Software flow control | Async | Off | |-------------------------+-------------------+--------------| | i SDLC | Sync | On | |-------------------------+-------------------+--------------| | i BSC | Sync | Off | +------------------------------------------------------------+ +------------------------------------------------------------+ | RESULT CODES and LINE ATTENUATION | |------------------------------------------------------------| | i Mode | Switched/Leased | SW1/3 | |-------------------------+--------------------+-------------| | i Result codes enabled | Switched | Off | |-------------------------+--------------------+-------------| | i Result codes disabled | Switched | On | |-------------------------+--------------------+-------------| | i Transmit at 0dB | Leased | Off | |-------------------------+--------------------+-------------| | i Transmit at -10dB | Leased | On | +------------------------------------------------------------+ +------------------------------------------------------------+ | UUCP SPOOFING and AS/400 MODE | |------------------------------------------------------------| | i Mode | Async/Sync | SW1/4 | |--------------------------+-------------------+-------------| | i UUCP spoofing disabled | Async | On | |--------------------------+-------------------+-------------| | i UUCP spoofing enabled | Async | Off | |--------------------------+-------------------+-------------| | AS/400 disabled | Sync | On | |--------------------------+-------------------+-------------| | AS/400 enabled | Sync | Off | +------------------------------------------------------------+ +------------------------------------------------------------+ | AUTO-ANSWER and ANSWER/ORIGINATE | |------------------------------------------------------------| | i Mode | Switched/Leased | SW1/5 | |------------------------+--------------------+--------------| | i Auto-answer enabled | Switched | On | |------------------------+--------------------+--------------| | i Auto-answer disabled | Switched | Off | |------------------------+--------------------+--------------| | i Answer mode | Leased | On | |------------------------+--------------------+--------------| | i Originate mode | Leased | Off | +------------------------------------------------------------+ +------------------------------------------------------------+ | EFFICIENCY MODE and SLAVE CLOCK | |------------------------------------------------------------| | i Mode | Async/Sync | SW1/6 | |-------------------------------------+-------------+--------| | i Modem set to maximum effiency | Async | On | |-------------------------------------+-------------+--------| | i Modem not set to maximum effiency | Async | Off | |-------------------------------------+-------------+--------| | i Clock controlled remotely | Sync | On | |-------------------------------------+-------------+--------| | i Clock controlled locally | Sync | Off | +------------------------------------------------------------+ +------------------------------------------------------------+ | RTS MODE | |------------------------------------------------------------| | i Mode | SW1/7 | |-------------------------------+----------------------------| | i RTS forced high | Off | |-------------------------------+----------------------------| | i RTS normal | On | +------------------------------------------------------------+ +------------------------------------------------------------+ | COMMAND MODE | |------------------------------------------------------------| | i Mode | SW1/8 | |-------------------------------+----------------------------| | i Command mode enabled | Off | |-------------------------------+----------------------------| | i Command mode disabled | On | +------------------------------------------------------------+ +------------------------------------------------------------+ | LOOPBACK MODE | |------------------------------------------------------------| | i Mode | SW1/9 | |-------------------------------+----------------------------| | i Remote loopback | Off | |-------------------------------+----------------------------| | i Local loopback | On | +------------------------------------------------------------+ +------------------------------------------------------------+ | LINE TYPE | |------------------------------------------------------------| | i Type | SW1/10 | |-------------------------------+----------------------------| | i Switched | On | |-------------------------------+----------------------------| | i Leased | Off | +------------------------------------------------------------+ +------------------------------------------------------------+ | RESULT CODE TYPE and CLOCK SOURCE | |------------------------------------------------------------| | i Mode | Async/Sync | SW1/11 | |--------------------------+------------------+--------------| | i Multitech result codes | Async | Off | |--------------------------+------------------+--------------| | i AT result codes | Async | On | |--------------------------+------------------+--------------| | i Internal clock | Sync | Off | |--------------------------+------------------+--------------| | i External clock | Sync | On | +------------------------------------------------------------+ +------------------------------------------------------------+ | ASYNCHRONOUS/SYNCHRONOUS MODE | |------------------------------------------------------------| | i Mode | SW1/12 | |-------------------------------+----------------------------| | i Asynchronous | Off | |-------------------------------+----------------------------| | i Synchronous | On | +------------------------------------------------------------+ +------------------------------------------------------------+ | OPERATION SPEED | |------------------------------------------------------------| | i Speed | SW2/1 | SW2/2 | |--------------------+-------------------+-------------------| | i 19.2Kbps | On | On | |--------------------+-------------------+-------------------| | i 14.4Kbps | Off | On | |--------------------+-------------------+-------------------| | i 9600bps | On | Off | |--------------------+-------------------+-------------------| | i 2400bps | Off | Off | +------------------------------------------------------------+ +------------------------------------------------------------+ | CD/DSR MODE | |------------------------------------------------------------| | Mode | SW2/3 | |-------------------------------+----------------------------| | i CD and DSR normal | On | |-------------------------------+----------------------------| | i CD and DSR forced high | Off | +------------------------------------------------------------+ +------------------------------------------------------------+ | LEASED LINE TYPE | |------------------------------------------------------------| | Mode | SW2/4 | |------------------------------+-----------------------------| | 2-wire | On | |------------------------------+-----------------------------| | 4-wire | Off | +------------------------------------------------------------+ +------------------------------------------------------------+ | NVRAM WRITE PROTECTION | |------------------------------------------------------------| | i Mode | JP1 | |----------------------------+-------------------------------| | i Disabled | Pins 1 & 2 closed | |----------------------------+-------------------------------| | i Enabled | Pins 2 & 3 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | DIAGNOSTIC LED(S) | |------------------------------------------------------------| | LED | Color | Status | Condition | |------+-------+----------+----------------------------------| | SD | Red | On | Modem is transmitting data | |------+-------+----------+----------------------------------| | SD | 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 | |------+-------+----------+----------------------------------| | 19.2 | Red | On | Modem connected at 19.2Kbps | |------+-------+----------+----------------------------------| | 19.2 | Red | Off | Modem not connected at 19.2Kbps | |------+-------+----------+----------------------------------| | 14.4 | Red | On | Modem connected at 14.4Kbps | |------+-------+----------+----------------------------------| | 14.4 | Red | Off | Modem not connected at 14.4Kbps | |------+-------+----------+----------------------------------| | 96 | Red | On | Modem connected at 9600bps | |------+-------+----------+----------------------------------| | 96 | Red | Off | Modem not connected at 9600bps | |------+-------+----------+----------------------------------| | 96 | Red | On | Modem connected at 9600bps | |------+-------+----------+----------------------------------| | 96 | Red | Off | Modem not connected at 9600bps | |------+-------+----------+----------------------------------| | 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 | 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 | Off | Error correction disabled | |------+-------+----------+----------------------------------| | EC | Red | Blinking | Error correction activated | |------+-------+----------+----------------------------------| | FX | Red | On | Modem is connected in FAX mode | |------+-------+----------+----------------------------------| | FX | Red | Off | Modem is not connected in FAX | | | | | mode | |------+-------+----------+----------------------------------| | ER | Red | On | Test failed or leased line | | | | | connection not OK | |------+-------+----------+----------------------------------| | ER | Red | Off | Test did not fail and/or leased | | | | | line connection OK | +------------------------------------------------------------+ Proprietary AT Command Set +------------------------------------------------------------+ | AUTO-RELIABLE TIME BUFFER CONFIGURATION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] $An [cmds] | |--------------+---------------------------------------------| | Example: | AT $A1 &W | |--------------+---------------------------------------------| | Description: | Controls the handling of incoming data | | | during auto-reliable time period. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i $A0 | Data is discarded. | |--------------+---------------------------------------------| | i $A1 | Data is buffered. | +------------------------------------------------------------+ +------------------------------------------------------------+ | BIT MODE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] $EBn [cmds] | |--------------+---------------------------------------------| | Example: | AT $EB1 E1 | |--------------+---------------------------------------------| | Description: | Selects 10- or 11-bit mode. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i $EB0 | Sets 10-bit mode. | |--------------+---------------------------------------------| | i $EB1 | Sets 11-bit mode. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CALLBACK ATTEMPTS | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S16=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS16=6 | |--------------+---------------------------------------------| | Default: | 4 | |--------------+---------------------------------------------| | Range: | 1-255 | |--------------+---------------------------------------------| | Unit: | 1 attempt | |--------------+---------------------------------------------| | Description: | Sets the maximum number of login attempts | | | after initial callback connection. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CALLBACK NUMBER | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] [+/-]DT<#>Nnn | |--------------+---------------------------------------------| | Examples: | AT#DB2 +-DT555-1212N10 | |--------------+---------------------------------------------| | Description: | Sets the phone number associated with the | | | password at memory location nn. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | +DT | Modem will initiate callback on successful | | | login. | |--------------+---------------------------------------------| | -DT | Modem will allow immediate entry on | | | successful login without callback. | |--------------+---------------------------------------------| | +-DT | If password is followed by a -, modem will | | | allow immediate entry. If password is | | | followed by a + or nothing, modem will | | | initiate callback. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CALLBACK PARITY | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] #Pn [cmds] | |--------------+---------------------------------------------| | Example: | AT #P0 #DB1 | |--------------+---------------------------------------------| | Description: | Sets the parity of the modem when in | | | callback mode. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i #P0 | No parity. | |--------------+---------------------------------------------| | i #P1 | Odd parity. | |--------------+---------------------------------------------| | i #P2 | Even parity. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CALLBACK PASSWORD | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] #CBNnnxxxx | |--------------+---------------------------------------------| | Example: | AT#DB2 #CBN09snarf | |--------------+---------------------------------------------| | Description: | Sets the callback password at memory | | | location nn to xxxx. The password must be | | | between 6 and 10 characters, inclusive. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CALLBACK SECURITY | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] #DBn [cmds] | |--------------+---------------------------------------------| | Example: | AT #DB1 S0=1 | |--------------+---------------------------------------------| | Description: | Sets the security level of the callback | | | function. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i #DB0 | Disables security and clears callback | | | memory. | |--------------+---------------------------------------------| | i #DB1 | Enables remote security only. | |--------------+---------------------------------------------| | i #DB2 | Enables local and remote security. | +------------------------------------------------------------+ +------------------------------------------------------------+ | COMMAND ESCAPE TYPE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] %En [cmds] | |--------------+---------------------------------------------| | Example: | AT %E3 &W | |--------------+---------------------------------------------| | Description: | Sets type and response of command escape | | | sequence. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i %E0 | Command escape disabled. | |--------------+---------------------------------------------| | i %E1 | TIES escape (+++AT...) | |--------------+---------------------------------------------| | i %E2 | AT method. | |--------------+---------------------------------------------| | i %E3 | Both TIES and BREAK methods. | |--------------+---------------------------------------------| | i %E4 | OK response to command escape disabled. | |--------------+---------------------------------------------| | i %E5 | OK response to command escape enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | COMMAND SET | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT &Qn | |--------------+---------------------------------------------| | Example: | AT &Q1 | |--------------+---------------------------------------------| | Description: | Selects standard Hayes or custom command | | | sets. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i &Q0 | Multi-Tech custom command set enabled. | |--------------+---------------------------------------------| | i &Q1 | Standard Hayes command set enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | COMPRESSION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT &En | |--------------+---------------------------------------------| | Example: | AT &E15 #L0 | |--------------+---------------------------------------------| | Description: | Selects data compression. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i &E14 | Data compression disabled. | |--------------+---------------------------------------------| | i &E15 | Data compression enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | COMPRESSION MODE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT #Ln | |--------------+---------------------------------------------| | Example: | AT #L2 DT555-1212 | |--------------+---------------------------------------------| | Description: | Selects active compression protocols. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i #L0 | V.42 negotiation enabled. | |--------------+---------------------------------------------| | i #L1 | MNP negotiation enabled. | |--------------+---------------------------------------------| | i #L2 | LAP-M negotiation enabled. | |--------------+---------------------------------------------| | i #L3 | LAP-M enabled, no negotiation. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CTS SIGNAL | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] &RFn [cmds] | |--------------+---------------------------------------------| | Example: | AT &RF0 | |--------------+---------------------------------------------| | Description: | Selects the function of the CTS signal. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i &RF0 | CTS is set to RTS. | |--------------+---------------------------------------------| | i &RF1 | CTS is independent of RTS. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DIAL STORED PHONE NUMBER | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] Nn1 [Nn2, Nn3...] | |--------------+---------------------------------------------| | Example: | ATM0 N1N3N5 | |--------------+---------------------------------------------| | Description: | Dials stored phone number(s). If the first | | | number is busy, the modem will proceed to | | | the next number in the list. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DIALING MODE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] $VDn [cmds] | |--------------+---------------------------------------------| | Example: | AT $VD | |--------------+---------------------------------------------| | Description: | Selects voice/data mode dialing. | |--------------+---------------------------------------------| | i i Command | Function | |--------------+---------------------------------------------| | i $VD0 | Disables voice/data mode. | |--------------+---------------------------------------------| | i $VD1 | Enables voice/data mode. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DSR SIGNAL | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] &SFn [cmds] | |--------------+---------------------------------------------| | Example: | AT &SF0 | |--------------+---------------------------------------------| | Description: | Selects the function of the DSR signal. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i &SF0 | DSR is set to CD. | |--------------+---------------------------------------------| | i &SF1 | DSR is independent of CD. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DTR DIALING | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] $Dn [cmds] | |--------------+---------------------------------------------| | Example: | AT $D1 DT555-1212 | |--------------+---------------------------------------------| | Description: | Turns DTR dialing on and off. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i $D0 | DTR dialing disabled. | |--------------+---------------------------------------------| | i $D1 | DTR dialing enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DTR TIMEOUT | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S24=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS24=40 | |--------------+---------------------------------------------| | Default: | 20 | |--------------+---------------------------------------------| | Range: | 0-255 | |--------------+---------------------------------------------| | Unit: | 50 ms | |--------------+---------------------------------------------| | Description: | Sets the time to drop the DTR signal to | | | hangup. | +------------------------------------------------------------+ +------------------------------------------------------------+ | ERASE CALLBACK PASSWORD | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] #RCBNn [cmds] | |--------------+---------------------------------------------| | Example: | AT #RCBN05 #RDN05 | |--------------+---------------------------------------------| | Description: | Erases the callback password at the memory | | | location specified. | +------------------------------------------------------------+ +------------------------------------------------------------+ | ERASE CALLBACK NUMBER | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] #RDNn [cmds] | |--------------+---------------------------------------------| | Example: | AT #RCBN05 #RDN05 | |--------------+---------------------------------------------| | Description: | Erases the callback phone number at the | | | memory location specified. | +------------------------------------------------------------+ +------------------------------------------------------------+ | ERROR CORRECTION DISABLE ON CONNECT | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] $Fn [cmds] | |--------------+---------------------------------------------| | Example: | AT $F1 DT555-1212 | |--------------+---------------------------------------------| | Description: | Selects whether error correction can be | | | disabled by a while handshaking. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i $F0 | Error correction handshake interrupt | | | disabled. | |--------------+---------------------------------------------| | i $F1 | Error correction handshake interrupt | | | enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | ESCAPE SEQUENCE BUFFER SIZE | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S34=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS34=30 | |--------------+---------------------------------------------| | Default: | 10 | |--------------+---------------------------------------------| | Range: | 0-60 | |--------------+---------------------------------------------| | Unit: | 1 byte | |--------------+---------------------------------------------| | Description: | Sets the size of the buffer used to store | | | commands during an escape sequence. | +------------------------------------------------------------+ +------------------------------------------------------------+ | ESCAPE SEQUENCE - OUT OF BAND | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] | |--------------+---------------------------------------------| | Example: | AT #F1 | |--------------+---------------------------------------------| | Description: | Puts the modem in Command Mode. | |--------------+---------------------------------------------| | Notes: | Do not precede this command with AT. | | | | | | refers to the hardware modem break | | | signal. | +------------------------------------------------------------+ +------------------------------------------------------------+ | ESCAPE SEQUENCE TIMEOUT | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S32=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS32=30 | |--------------+---------------------------------------------| | Default: | 20 | |--------------+---------------------------------------------| | Range: | 0-255 | |--------------+---------------------------------------------| | Unit: | 1 second | |--------------+---------------------------------------------| | Description: | Sets the maximum amount of time the modem | | | will wait for a while executing an | | | escape sequence. | +------------------------------------------------------------+ +------------------------------------------------------------+ | FACTORY DEFAULTS | |------------------------------------------------------------| | Type: | Immediate/Configuration | |--------------+---------------------------------------------| | Format: | AT &F[n] | |--------------+---------------------------------------------| | Example: | AT &F8 | |--------------+---------------------------------------------| | Description: | Loads factory defaults, or sets write | | | protect on NVRAM. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i &F | Reloads defaults by setting. (Immediate, | | | see below.) | |--------------+---------------------------------------------| | i &F8 | Sets &F to read factory defaults from ROM, | | | and disables NVRAM write protect. | |--------------+---------------------------------------------| | i &F9 | Sets &F to read defaults from NVRAM, and | | | enables write-protect. | +------------------------------------------------------------+ +------------------------------------------------------------+ | FAILED PASSWORD ATTEMPTS | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S26? | |--------------+---------------------------------------------| | Example: | ATS26? | |--------------+---------------------------------------------| | Default: | Read-only | |--------------+---------------------------------------------| | Range: | 0-255 | |--------------+---------------------------------------------| | Unit: | 1 attempt | |--------------+---------------------------------------------| | Description: | This register stores the number of failed | | | password attempts. | +------------------------------------------------------------+ +------------------------------------------------------------+ | FALLBACK MODE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] #Fn [cmds] | |--------------+---------------------------------------------| | Example: | AT #F1 O | |--------------+---------------------------------------------| | Description: | Sets direction of fallback. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i #F0 | Fallback disabled. | |--------------+---------------------------------------------| | i #F1 | Fallback from 19.2Kbps to 2400bps as line | | | quality degrades. | |--------------+---------------------------------------------| | i #F2 | Fallback from 2400bps to 19.2Kbps as line | | | quality improves. | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLOW CONTROL NORMAL MODE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] &En [cmds] | |--------------+---------------------------------------------| | Example: | AT &E11 O | |--------------+---------------------------------------------| | Description: | Selects normal flow control. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i &E10 | Normal mode disabled. | |--------------+---------------------------------------------| | i &E11 | Normal mode enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLOW CONTROL TYPE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] &En [cmds] | |--------------+---------------------------------------------| | Example: | AT &E4 &W | |--------------+---------------------------------------------| | Description: | Sets type of flow control used by modem. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i &E3 | Flow control disabled. | |--------------+---------------------------------------------| | i &E4 | CTS/RTS flow control enabled. | |--------------+---------------------------------------------| | i &E5 | XON/XOFF flow control enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | HANDSHAKE ATTEMPTS | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] #An [cmds] | |--------------+---------------------------------------------| | Example: | AT #A1 #L3 | |--------------+---------------------------------------------| | Description: | Configures the initial handshake phase. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | #A0 | Attempts in order: 19.2Kbps, 14.4Kbps, | | | 12Kbps, 9600bps, 4800bps, 2400bps, 1200bps, | | | 300bps. | |--------------+---------------------------------------------| | #A1 | Attempts only 9600bps. | |--------------+---------------------------------------------| | #A2 | Attempts in order: 19.2Kbps, 14.4Kbps, | | | 12Kbps, 9600bps, 4800bps. | |--------------+---------------------------------------------| | #A3 | Attempts in order: 2400bps, 1200bps, | | | 300bps. | +------------------------------------------------------------+ +------------------------------------------------------------+ | HELP SCREENS | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT $Hn | |--------------+---------------------------------------------| | Example: | AT $H1 | |--------------+---------------------------------------------| | Description: | Shows modem help screens. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | $H1 | Shows help screen 1. | |--------------+---------------------------------------------| | $H2 | Shows help screen 2. | |--------------+---------------------------------------------| | $H3 | Shows help screen 3. | +------------------------------------------------------------+ +------------------------------------------------------------+ | LIST CONFIGURATION | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT Ln | |--------------+---------------------------------------------| | Example: | AT L5 | |--------------+---------------------------------------------| | Description: | Lists modem configuration. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | L5 | Lists all settings. | |--------------+---------------------------------------------| | L6 | Lists the values of all S-registers. | |--------------+---------------------------------------------| | L7 | Lists extended parameters. | |--------------+---------------------------------------------| | L8 | Lists current diagnostics. | +------------------------------------------------------------+ +------------------------------------------------------------+ | LOCAL SERIAL PORT SPEED | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] $SBnnn [cmds] | |--------------+---------------------------------------------| | Example: | AT $MB9600 $SB19200 | |--------------+---------------------------------------------| | Description: | Sets serial port speed. | |--------------+---------------------------------------------| | i 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. | |--------------+---------------------------------------------| | $SB57600 | Sets 57.6Kbps speed. | |--------------+---------------------------------------------| | $SB115200 | Sets 115.2Kbps speed. | +------------------------------------------------------------+ +------------------------------------------------------------+ | LOCK SERIAL PORT | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] $BAn [cmds] | |--------------+---------------------------------------------| | Example: | AT $SB57600 $BA0 | |--------------+---------------------------------------------| | Description: | Sets operation of serial port speed. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i $BA0 | Serial speed locked at rate set by $SB. | |--------------+---------------------------------------------| | i $BA1 | Serial speed follows connect speed, | | | ignoring $SB. | +------------------------------------------------------------+ +------------------------------------------------------------+ | LOGIN PASSWORD | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] #Ixxxx | |--------------+---------------------------------------------| | Example: | AT #IMicroHouse | |--------------+---------------------------------------------| | 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] | |--------------+---------------------------------------------| | Example: | AT &BS1 &MB28800 | |--------------+---------------------------------------------| | Description: | Sets the maximum transmittable block size. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i &BS0 | Maximum block size is 64 characters. | |--------------+---------------------------------------------| | i &BS1 | Maximum block size is 128 characters for | | | LAP-M, and 256 characters for MNP. | +------------------------------------------------------------+ +------------------------------------------------------------+ | PACING | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] &En [cmds] | |--------------+---------------------------------------------| | Example: | AT &E13 | |--------------+---------------------------------------------| | Description: | Selects ENQ/ACK pacing. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i &E12 | Disables ENQ/ACK pacing. | |--------------+---------------------------------------------| | i &E13 | Enables ENQ/ACK pacing. | +------------------------------------------------------------+ +------------------------------------------------------------+ | PACING - ENQ/ACK | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] &En [cmds] | |--------------+---------------------------------------------| | Example: | AT &E9 | |--------------+---------------------------------------------| | Description: | Selects ENQ/ACK pacing. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i &E8 | Enables ENQ/ACK pacing. | |--------------+---------------------------------------------| | i &E9 | Disables ENQ/ACK pacing. | +------------------------------------------------------------+ +------------------------------------------------------------+ | REDIAL | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | ATA: | |--------------+---------------------------------------------| | Example: | ATA: | |--------------+---------------------------------------------| | Description: | Redials the last number dialed until it is | | | no longer busy. | +------------------------------------------------------------+ +------------------------------------------------------------+ | REMOTE CONNECT SPEED | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT $MBnnn | |--------------+---------------------------------------------| | Example: | AT $MB9600 $SB19200 | |--------------+---------------------------------------------| | Description: | Sets maximum remote connect speed. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | $MB75 | Sets V.23 (1200bps/75bps bi-directional). | |--------------+---------------------------------------------| | $MB300 | Sets 300bps connect. | |--------------+---------------------------------------------| | $MB1200 | Sets 1200bps connect. | |--------------+---------------------------------------------| | $MB2400 | Sets 2400bps connect. | |--------------+---------------------------------------------| | $MB4800 | Sets 4800bps connect. | |--------------+---------------------------------------------| | $MB9600 | Sets 9600bps connect. | |--------------+---------------------------------------------| | $MB14400 | Sets 14.4Kbps connect. | |--------------+---------------------------------------------| | $MB19200 | Sets 19.2Kbps connect. | +------------------------------------------------------------+ +------------------------------------------------------------+ | RETRANSMIT FAIL ACTION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] $Rn [cmds] | |--------------+---------------------------------------------| | Example: | AT $R1 | |--------------+---------------------------------------------| | Description: | Sets whether the modem gives up on a bad | | | connection. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i $R0 | Hang up after 12 failed retransmissions. | |--------------+---------------------------------------------| | i $R1 | Do not hang up after 12 failed | | | retransmissions. | +------------------------------------------------------------+ +------------------------------------------------------------+ | SETUP INACTIVITY TIMER | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S29=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS29=5 | |--------------+---------------------------------------------| | Default: | 20 | |--------------+---------------------------------------------| | Range: | 1-255 | |--------------+---------------------------------------------| | Unit: | 1 minute | |--------------+---------------------------------------------| | Description: | Sets the maximum amount of time between | | | commands until the setup password must be | | | re-entered. | +------------------------------------------------------------+ +------------------------------------------------------------+ | STORE PHONE NUMBER IN NVRAM | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] D<#>Nn [dialstring] | |--------------+---------------------------------------------| | Example: | ATD555-1212N1 | |--------------+---------------------------------------------| | Description: | Stores a phone number in the modem's | | | memory. | +------------------------------------------------------------+ +------------------------------------------------------------+ | TIME UNTIL HANG UP ON LOW DTR | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S36=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS36=5 | |--------------+---------------------------------------------| | Default: | 0 | |--------------+---------------------------------------------| | Range: | 0-255 | |--------------+---------------------------------------------| | Unit: | 1 second | |--------------+---------------------------------------------| | Description: | Sets the maximum amount of time the modem | | | will wait to hang up after the DTR signal | | | goes low. | +------------------------------------------------------------+ +------------------------------------------------------------+ | TIME UNTIL PICK UP ON HIGH DTR | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S37=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS37=5 | |--------------+---------------------------------------------| | Default: | 0 | |--------------+---------------------------------------------| | Range: | 0-255 | |--------------+---------------------------------------------| | Unit: | 1 second | |--------------+---------------------------------------------| | Description: | Sets the maximum amount of time the modem | | | will wait to pick up after the DTR signal | | | goes high. | +------------------------------------------------------------+ +------------------------------------------------------------+ | TRELLIS MODULATION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] #Tn [cmds] | |--------------+---------------------------------------------| | Example: | AT #T1 | |--------------+---------------------------------------------| | Description: | Controls Trellis Coded Modulation. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i #T0 | Disables TCM. | |--------------+---------------------------------------------| | i #T1 | Enables TCM. | +------------------------------------------------------------+ +------------------------------------------------------------+ | V.25 MODE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] $Vn [cmds] | |--------------+---------------------------------------------| | Example: | AT $V2 CIC | |--------------+---------------------------------------------| | Description: | Configures V.25bis mode. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i $V0 | Disables V.25bis. | |--------------+---------------------------------------------| | i $V1 | Enables V.25bis. | |--------------+---------------------------------------------| | i $V2 | Modem will accept one V.25bis command and | | | will then return to AT command mode. | |--------------+---------------------------------------------| | i $V5 | DSR follows DTR in V.25bis command mode. | |--------------+---------------------------------------------| | i $V6 | DSR operates normally in V.25bis command | | | mode. | +------------------------------------------------------------+ +------------------------------------------------------------+ | V.42 MODE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] &En [cmds] | |--------------+---------------------------------------------| | Example: | AT &E0 | |--------------+---------------------------------------------| | Description: | Configures the operation of V.42 mode. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i &E0 | Error correction disabled. | |--------------+---------------------------------------------| | i &E1 | V.42 set to auto-reliable. | |--------------+---------------------------------------------| | i &E2 | V.42 set to reliable. | +------------------------------------------------------------+ +------------------------------------------------------------+ | XOFF SEND | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] #Xn [cmds] | |--------------+---------------------------------------------| | Example: | AT #X1 | |--------------+---------------------------------------------| | Description: | Selects how XOFF signal is sent. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i #X0 | Single XOFF character sent until ready. | |--------------+---------------------------------------------| | i #X1 | Multiple XOFF characters sent until ready. | +------------------------------------------------------------+ +------------------------------------------------------------+ | XON/XOFF PASS-THROUGH | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] &En [cmds] | |--------------+---------------------------------------------| | Example: | AT &E7 O | |--------------+---------------------------------------------| | Description: | Selects whether XON/XOFF signals are sent | | | to remote modem. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i &E6 | XON/XOFF signals trapped by local modem. | |--------------+---------------------------------------------| | i &E7 | XON/XOFF passed through local modem. | +------------------------------------------------------------+ Proprietary V.25bis Command Set +------------------------------------------------------------+ | CLEAR MEMORY LOCATION | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | CLAn | |--------------+---------------------------------------------| | Example: | CLA05 | |--------------+---------------------------------------------| | Description: | Clears the phone number in memory location | | | nn. | +------------------------------------------------------------+ +------------------------------------------------------------+ | LOCAL SERIAL PORT SPEED | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | CSPn | |--------------+---------------------------------------------| | Example: | CSP38400 | |--------------+---------------------------------------------| | Description: | Sets serial port speed. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | CSP300 | Sets 300bps speed. | |--------------+---------------------------------------------| | CSP1200 | Sets 1200bps speed. | |--------------+---------------------------------------------| | CSP2400 | Sets 2400bps speed. | |--------------+---------------------------------------------| | CSP4800 | Sets 4800bps speed. | |--------------+---------------------------------------------| | CSP9600 | Sets 9600bps speed. | |--------------+---------------------------------------------| | CSP19200 | Sets 19.2Kbps speed. | |--------------+---------------------------------------------| | CSP38400 | Sets 38.4Kbps speed. | |--------------+---------------------------------------------| | CSP57600 | Sets 57.6Kbps speed. | |--------------+---------------------------------------------| | CSP115200 | Sets 115.2Kbps speed. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CALL REQUESTED NUMBER | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | CRI<#>;n | |--------------+---------------------------------------------| | Example: | CRI1-303 555-1212;fubar | |--------------+---------------------------------------------| | Description: | Same as CRN. Dials the number given. It | | | will ignore spaces and hyphens in the | | | string. If the string is more than fifty | | | characters long, a result of INV will be | | | returned. The identification string n will | | | be ignored. | +------------------------------------------------------------+ +------------------------------------------------------------+ | REQUEST LISTED NUMBERS | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | RLN | |--------------+---------------------------------------------| | Example: | RLN | |--------------+---------------------------------------------| | Description: | Requests the modem to return the list of | | | stored numbers. If no numbers are stored, | | | the modem will return LSN. | +------------------------------------------------------------+