AT&T PARADYNE ============= KEEPINTOUCH CARD MODEM 3760/3762/3763/3764 Modem Type Data (synchronous/asynchronous)/Fax Maximum Data Rate 14.4Kbps Maximum Fax Rate 14.4Kbps Data Bus PCMCIA Type II Fax Class Class I & II Data Modulation Bell 103A/212A Protocol ITU-T V.21, V.22, V.22bis, V.32, V.32bis AT&T ETC cellular protocol Fax Modulation ITU-T V.17, V.27ter, V.29 Protocol Error MNP5, V.42, V.42bis Correction/Compression Proprietary AT Command Set V1400 +------------------------------------------------------------+ | AT COMMAND SET ERRORS | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT S84=n | |--------------+---------------------------------------------| | Example: | AT S84=1 | |--------------+---------------------------------------------| | Description: | Configures how the modem will respond to | | | errors. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> S84=0 | Normal operation. | |--------------+---------------------------------------------| | S84=1 | NO_ERROR mode. | |--------------+---------------------------------------------| | S84=2 | NO_STRAP_OR_ERROR mode. | +------------------------------------------------------------+ +------------------------------------------------------------+ | AUTO-RELIABLE FALLBACK CHARACTER | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] %An [cmds] | |--------------+---------------------------------------------| | Example: | AT%A20 | |--------------+---------------------------------------------| | Default: | 13 | |--------------+---------------------------------------------| | Range: | 0-127 | |--------------+---------------------------------------------| | Unit: | ASCII | |--------------+---------------------------------------------| | Description: | Sets the character used as the | | | auto-reliable fallback character. %A0 will | | | disable this function. | +------------------------------------------------------------+ +------------------------------------------------------------+ | AUTO-RELIABLE TIME BUFFER CONFIGURATION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Cn [cmds] | |--------------+---------------------------------------------| | Example: | AT \C1 &W | |--------------+---------------------------------------------| | Description: | Controls the handling of incoming data | | | during auto-reliable time period. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> \C0 | Data is buffered. | |--------------+---------------------------------------------| | \C1 | Data is discarded. | |--------------+---------------------------------------------| | \C2 | Data is discarded, modem returns to normal | | | mode on receiving auto-reliable fallback | | | character. | +------------------------------------------------------------+ +------------------------------------------------------------+ | AUTO-RETRAIN - V.32bis | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT S76=n | |--------------+---------------------------------------------| | Example: | AT S76=1 | |--------------+---------------------------------------------| | Description: | Selects auto-retrain mode for V.32bis. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> S76=0 | Auto-retrain enabled. | |--------------+---------------------------------------------| | S76=1 | Auto-retrain disabled. | |--------------+---------------------------------------------| | S76=2 | Auto-retrain enabled; speed defaults to | | | 4800bps. | |--------------+---------------------------------------------| | S76=3 | Auto-retrain enabled; speed defaults to | | | 9600bps. | +------------------------------------------------------------+ +------------------------------------------------------------+ | BREAK TYPE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Kn [cmds] | |--------------+---------------------------------------------| | Example: | AT \K1 | |--------------+---------------------------------------------| | Description: | Configures action of break signal. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | \K0 | Buffers cleared and break sent to remote | | | modem, then enter command mode. | |--------------+---------------------------------------------| | \K1 | Buffers cleared and break sent to remote | | | modem. | |--------------+---------------------------------------------| | \K2 | Send break to remote modem immediately, | | | then enter command mode. | |--------------+---------------------------------------------| | \K3 | Send break to remote modem immediately. | |--------------+---------------------------------------------| | \K4 | Send break to remote modem with transmitted | | | data, then enter command mode. | |--------------+---------------------------------------------| |>> \K5 | Send break to remote modem with transmitted | | | data. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CD SIGNAL | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] &Cn [cmds] | |--------------+---------------------------------------------| | Example: | AT &C4 &R2 &S2 | |--------------+---------------------------------------------| | Description: | Configures the behavior of the carrier | | | detect signal. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | &C0 | CD forced high. | |--------------+---------------------------------------------| |>> &C1 | CD normal. | |--------------+---------------------------------------------| | &C2 | CD forced high except during disconnecting. | |--------------+---------------------------------------------| | &C3 | CD follows DTR signal. | |--------------+---------------------------------------------| | &C4 | CD follows remote RTS signal. | |--------------+---------------------------------------------| | &C5 | CD forced low when DTR is low. | +------------------------------------------------------------+ +------------------------------------------------------------+ | COMPRESSION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT %Cn | |--------------+---------------------------------------------| | Example: | AT *EC0 %C1 *AP0 | |--------------+---------------------------------------------| | Description: | Selects data compression. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | %C0 | Data compression disabled. | |--------------+---------------------------------------------| |>> %C1 | Data compression enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CONNECT MODE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Nn [cmds] | |--------------+---------------------------------------------| | Example: | AT \N1 DT555-1212 | |--------------+---------------------------------------------| | Description: | Sets connect mode. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | \N0 | Normal mode enabled. | |--------------+---------------------------------------------| | \N1 | Direct mode enabled. | |--------------+---------------------------------------------| | \N2 | MNP mode only enabled. | |--------------+---------------------------------------------| | \N3 | MNP mode with fallback to normal mode | | | enabled. | |--------------+---------------------------------------------| | \N4 | LAP-M mode only enabled. | |--------------+---------------------------------------------| | \N5 | LAP-M mode with fallback to normal mode | | | enabled. | |--------------+---------------------------------------------| | \N6 | LAP-M mode with fallback to MNP enabled. | |--------------+---------------------------------------------| |>> \N7 | LAP-M mode with fallback to MNP and normal | | | modes enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CTS SIGNAL | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Dn [cmds] | |--------------+---------------------------------------------| | Example: | AT \D0 | |--------------+---------------------------------------------| | Description: | Selects the function of the CTS signal. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> \D0 | CTS forced high. | |--------------+---------------------------------------------| | \D1 | CTS normal. | |--------------+---------------------------------------------| | \D2 | DSR normal, except forced low on | | | disconnect. | |--------------+---------------------------------------------| | \D3 | CTS follows CD. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DISCONNECT BUFFER DELAY | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S49=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S49=0 | |--------------+---------------------------------------------| | Default: | 10 | |--------------+---------------------------------------------| | Range: | 0-255 | |--------------+---------------------------------------------| | Unit: | 1 second | |--------------+---------------------------------------------| | Description: | Configures how long the modem will wait to | | | disconnect if there is data in the transmit | | | or receive buffers. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DSR SIGNAL | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] &Sn [cmds] | |--------------+---------------------------------------------| | Example: | AT &C4 &R2 &S2 | |--------------+---------------------------------------------| | Description: | Selects the function of the DSR signal. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | &S0 | DSR forced high. | |--------------+---------------------------------------------| | &S1 | DSR normal. | |--------------+---------------------------------------------| | &S2 | DSR normal, except forced low on | | | disconnect. | |--------------+---------------------------------------------| | &S3 | DSR follows DTR. | |--------------+---------------------------------------------| | &S4 | DSR normal, except signal is brought high | | | early. | |--------------+---------------------------------------------| | &S5 | DSR forced low in command mode. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DTR SIGNAL | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] &Dn [cmds] | |--------------+---------------------------------------------| | Example: | AT &D1 | |--------------+---------------------------------------------| | Description: | Configures the behavior of the Data | | | Terminal Ready signal. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | &D0 | DTR forced high. | |--------------+---------------------------------------------| | &D1 | Modem will enter command mode on low DTR. | |--------------+---------------------------------------------| |>> &D2 | Modem will disconnect on low DTR. | |--------------+---------------------------------------------| | &D3 | Modem will disconnect and reset on low DTR. | |--------------+---------------------------------------------| | &D4 | Modem will disconnect only on low DTR, | | | regardless of remote modem. | +------------------------------------------------------------+ +------------------------------------------------------------+ | ETC PROTOCOL | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] S91=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S91=0 | |--------------+---------------------------------------------| | Description: | Controls the AT&T ETC protocol. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> S91=0 | ETC disabled. | |--------------+---------------------------------------------| | S91=1 | ETC enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | FACTORY DEFAULTS | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT &Fn | |--------------+---------------------------------------------| | Example: | AT &F8 | |--------------+---------------------------------------------| | Description: | Loads factory defaults. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | &F0 | Reloads factory configuration. | |--------------+---------------------------------------------| | &F5 | Reloads factory configuration for ETC in | | | cellular mode. | |--------------+---------------------------------------------| | &F6 | Reloads factory configuration for ETC in | | | switched line mode. | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLOW CONTROL | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Gn [cmds] | |--------------+---------------------------------------------| | Example: | AT \G1 &K3 | |--------------+---------------------------------------------| | Description: | Selects modem port flow control. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> \G0 | Flow control disabled. | |--------------+---------------------------------------------| | \G1 | Flow control enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLOW CONTROL TYPE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Qn [cmds] | |--------------+---------------------------------------------| | Example: | AT \Q5 | |--------------+---------------------------------------------| | Description: | Sets type of flow control used by modem. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | \Q0 | Flow control disabled. | |--------------+---------------------------------------------| |>> \Q1 | Bidirectional XON/XOFF flow control | | | enabled. | |--------------+---------------------------------------------| | \Q2 | CTS flow control by DCE disabled. | |--------------+---------------------------------------------| | \Q3 | Bidirectional CTS/RTS flow control enabled. | |--------------+---------------------------------------------| | \Q4 | Flow control by DCE disabled. | |--------------+---------------------------------------------| |>> \Q5 | XON/XOFF flow control by DCE enabled. | |--------------+---------------------------------------------| | \Q6 | RTS flow control by DCE enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | HANG UP MODE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] S85=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S85=1 O | |--------------+---------------------------------------------| | Description: | Selects how the modem will hang up. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> S85=0 | Set hang up mode to normal on next ATH | | | command. | |--------------+---------------------------------------------| | S85=1 | Set hang up mode to fast on next ATH | | | command. | +------------------------------------------------------------+ +------------------------------------------------------------+ | INACTIVITY TIMER | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] \Tn [cmds] | |--------------+---------------------------------------------| | Example: | AT\T20 | |--------------+---------------------------------------------| | Default: | Unidentified | |--------------+---------------------------------------------| | Range: | 0-255 | |--------------+---------------------------------------------| | Unit: | 1 minute | |--------------+---------------------------------------------| | Description: | Sets the length of time that the modem does | | | not receive information before it | | | disconnects. | +------------------------------------------------------------+ +------------------------------------------------------------+ | LOCAL SERIAL PORT SPEED | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] %Rnnn [cmds] | |--------------+---------------------------------------------| | Example: | AT %B9600 %R19200 | |--------------+---------------------------------------------| | Description: | Sets serial port speed. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | %R300 | Sets 300bps speed. | |--------------+---------------------------------------------| | %R600 | Sets 600bps speed. | |--------------+---------------------------------------------| | %R1200 | Sets 1200bps speed. | |--------------+---------------------------------------------| | %R2400 | Sets 2400bps speed. | |--------------+---------------------------------------------| | %R4800 | Sets 4800bps speed. | |--------------+---------------------------------------------| | %R9600 | Sets 9600bps speed. | |--------------+---------------------------------------------| | %R12000 | Sets 12Kbps speed. | |--------------+---------------------------------------------| | %R14400 | Sets 14.4Kbps speed. | |--------------+---------------------------------------------| | %R19200 | Sets 19.2Kbps speed. | |--------------+---------------------------------------------| | %R38400 | Sets 38.4Kbps speed. | |--------------+---------------------------------------------| | %R57600 | Sets 57.6Kbps speed. | +------------------------------------------------------------+ +------------------------------------------------------------+ | LOCK SERIAL PORT | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] S90=n [cmds] | |--------------+---------------------------------------------| | Example: | AT %L3 %B14 S90=0 | |--------------+---------------------------------------------| | Description: | Sets operation of serial port speed. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> S90=0 | Serial speed locked. | |--------------+---------------------------------------------| | S90=1 | Serial speed follows connect speed. | +------------------------------------------------------------+ +------------------------------------------------------------+ | MAXIMUM BLOCK SIZE FOR TRANSMISSION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \An [cmds] | |--------------+---------------------------------------------| | Example: | AT \A3 %C1 | |--------------+---------------------------------------------| | Description: | Sets the maximum transmittable block size. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | \A0 | MNP block size is 64 characters. | |--------------+---------------------------------------------| | \A1 | MNP block size is 128 characters. | |--------------+---------------------------------------------| | \A2 | MNP block size is 192 characters. | |--------------+---------------------------------------------| |>> \A3 | MNP block size is 256 characters. | |--------------+---------------------------------------------| | \A4 | MNP block size is 32 characters. | |--------------+---------------------------------------------| | \A5 | MNP block size is 16 characters. | +------------------------------------------------------------+ +------------------------------------------------------------+ | NEGOTIATE PROTOCOL | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT S78=n | |--------------+---------------------------------------------| | Example: | AT S78=1 | |--------------+---------------------------------------------| | Description: | Configures whether the modem will attempt | | | to negotiate protocols or if only the | | | protocol selected in S41 will be used. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> S78=0 | Negotiation enabled. | |--------------+---------------------------------------------| | S78=1 | Negotiation disabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | PROTOCOL/SPEED | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] %Bn [cmds] | |--------------+---------------------------------------------| | Example: | AT %B14400 | |--------------+---------------------------------------------| | Description: | Selects the current DCE speed. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | %B300 | Select 300bps speed. | |--------------+---------------------------------------------| | %B1200 | Select 1200bps speed. | |--------------+---------------------------------------------| | %B2400 | Select 2400bps speed. | |--------------+---------------------------------------------| | %B4800 | Select 4800bps speed. | |--------------+---------------------------------------------| | %B7200 | Select 7200bps speed. | |--------------+---------------------------------------------| | %B9600 | Select 9600bps speed. | |--------------+---------------------------------------------| | %B12000 | Select 12Kbps speed. | |--------------+---------------------------------------------| | %B14400 | Select 14.4Kbps speed. | +------------------------------------------------------------+ +------------------------------------------------------------+ | PROTOCOL/SPEED | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S41=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS41=2 | |--------------+---------------------------------------------| | Description: | Selects the current protocol and speed. | |------------------------------------------------------------| | Command | Function | |----------------------+-------------------------------------| |>> S41=0 | V.32bis 14.4Kbps. | |----------------------+-------------------------------------| | S41=2 | V.32bis 12Kbps. | |----------------------+-------------------------------------| | S41=3 | V.32bis or V.32 9600bps. | |----------------------+-------------------------------------| | S41=4 | V.32bis 7200bps. | |----------------------+-------------------------------------| | S41=5 | V.32bis or V.32 4800bps. | |----------------------+-------------------------------------| | S41=6 | V.22bis 2400/1200bps. | |----------------------+-------------------------------------| | S41=7 | V.22 1200bps. | |----------------------+-------------------------------------| | S41=8 | Bell 212A 1200bps. | |----------------------+-------------------------------------| | S41=10 | V.21 300bps. | |----------------------+-------------------------------------| | S41=11 | Bell 103A 300bps. | |----------------------+-------------------------------------| | S41=12 | V.23 1200/75bps. | |----------------------+-------------------------------------| | S41=13 | V.23 75/1200bps. | +------------------------------------------------------------+ +------------------------------------------------------------+ | REDIAL | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] DL | |--------------+---------------------------------------------| | Example: | AT M1 DL | |--------------+---------------------------------------------| | Description: | Redials the last number dialed. | +------------------------------------------------------------+ +------------------------------------------------------------+ | REPORT INFORMATION | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] In [cmds] | |--------------+---------------------------------------------| | Example: | AT I3 &V1 %V | |--------------+---------------------------------------------| | Description: | Displays modem properties. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | I0 | Reports product code. | |--------------+---------------------------------------------| | I1 | Reports firmware version in short form. | |--------------+---------------------------------------------| | I2 | Reports firmware checksum result. | |--------------+---------------------------------------------| | I3 | Reports serial number. | |--------------+---------------------------------------------| | I4 | Reports modem number. | |--------------+---------------------------------------------| | I5 | Reports hardware part number. | |--------------+---------------------------------------------| | I6 | Reports software part number. | |--------------+---------------------------------------------| | I9 | Reports firmware part number. | |--------------+---------------------------------------------| | I11 | Reports ROM checksum result. | |--------------+---------------------------------------------| | I17 | Reports reason for last error. | |--------------+---------------------------------------------| | I19 | Reports firmware version in long form. | +------------------------------------------------------------+ +------------------------------------------------------------+ | REPORT INFORMATION | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] &Vn [cmds] | |--------------+---------------------------------------------| | Example: | AT I3 &V18 | |--------------+---------------------------------------------| | Description: | Reports configuration profiles, stored | | | numbers, and other information. If an | | | option is preceded by 1, the report will be | | | displayed repeatedly until a key is | | | pressed. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | &V0 | Report current configuration. | |--------------+---------------------------------------------| | &V1 | Report active configuration profile. | |--------------+---------------------------------------------| | &V2 | Display profile 0. | |--------------+---------------------------------------------| | &V3 | Display profile 1. | |--------------+---------------------------------------------| | &V4 | Display the first two stored numbers. | |--------------+---------------------------------------------| | &V8 | Report connection status and internal modem | | | information. | +------------------------------------------------------------+ +------------------------------------------------------------+ | REPORT INFORMATION - CHANGE MODEM SPEED | |------------------------------------------------------------| | Type: | I10=mmediate | |--------------+---------------------------------------------| | Format: | AT [cmds] I10=n [cmds] | |--------------+---------------------------------------------| | Example: | AT I10=3 &V1 %V | |--------------+---------------------------------------------| | Description: | Changes the value reported by I0. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | I10=0 | I0 will report 144 (14.4Kbps). | |--------------+---------------------------------------------| | I10=1 | I0 will report 240 (2400bps). | |--------------+---------------------------------------------| | I10=2 | I0 will report 480 (4800bps). | |--------------+---------------------------------------------| | I10=3 | I0 will report 960 (9600bps). | |--------------+---------------------------------------------| | I10=4 | I0 will report 120 (1200bps). | +------------------------------------------------------------+ +------------------------------------------------------------+ | RESULT CODE FORMAT | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] Vn [cmds] | |--------------+---------------------------------------------| | Example: | AT V1 | |--------------+---------------------------------------------| | Description: | Selects which type of result codes will be | | | displayed. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | V0 | Display standard numeric result codes. | |--------------+---------------------------------------------| |>> V1 | Display verbose result codes. | |--------------+---------------------------------------------| | V2 | Display AT&T numeric result codes. | +------------------------------------------------------------+ +------------------------------------------------------------+ | RTS SIGNAL | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] &Rn [cmds] | |--------------+---------------------------------------------| | Example: | AT &C4 &R2 &S2 | |--------------+---------------------------------------------| | Description: | Configures the behavior of the Ready to | | | Send signal. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | &R0 | RTS normal. | |--------------+---------------------------------------------| | &R1 | RTS forced high. | |--------------+---------------------------------------------| |>> &R2 | RTS follows remote CD signal. | +------------------------------------------------------------+ +------------------------------------------------------------+ | SWITCHED LINE TRANSMISSION LEVEL | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] &In [cmds] | |--------------+---------------------------------------------| | Example: | AT &I15 | |--------------+---------------------------------------------| | Default: | 9 | |--------------+---------------------------------------------| | Range: | 10 - 25 | |--------------+---------------------------------------------| | Unit: | -1 dBm | |--------------+---------------------------------------------| | Description: | Sets the signal level for transmission when | | | in switched line mode. | +------------------------------------------------------------+ +------------------------------------------------------------+ | V.17 MODULATION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT S79=n | |--------------+---------------------------------------------| | Example: | AT S79=1 | |--------------+---------------------------------------------| | Description: | Selects whether V.17 can be used for fax | | | modulation. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> S79=0 | V.17 enabled. | |--------------+---------------------------------------------| | S79=1 | V.17 disabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | V.32 HANDSHAKE OPTIONS | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] S43=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S43=0 | |--------------+---------------------------------------------| | Description: | Shortens V.32 and V.32bis handshake time. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> S43=0 | Normal handshake sequence. | |--------------+---------------------------------------------| | S43=1 | Training time is shortened by 2 seconds in | | | V.32 and V.32bis modes. | +------------------------------------------------------------+ +------------------------------------------------------------+ | V.42 WINDOW SIZE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT S89=n | |--------------+---------------------------------------------| | Example: | AT S89=1 | |--------------+---------------------------------------------| | Description: | Sets the size of the window for V.42 mode. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> S89=0 | V.42 window set to 6 frames. | |--------------+---------------------------------------------| | S89=1 | V.42 window set to 7 frames. | |--------------+---------------------------------------------| | S89=2 | V.42 window set to 8 frames. | |--------------+---------------------------------------------| | S89=3 | V.42 window set to 9 frames. | |--------------+---------------------------------------------| | S89=4 | V.42 window set to 10 frames. | |--------------+---------------------------------------------| | S89=5 | V.42 window set to 11 frames. | |--------------+---------------------------------------------| | S89=6 | V.42 window set to 12 frames. | |--------------+---------------------------------------------| | S89=7 | V.42 window set to 13 frames. | |--------------+---------------------------------------------| | S89=8 | V.42 window set to 14 frames. | |--------------+---------------------------------------------| | S89=9 | V.42 window set to 15 frames. | +------------------------------------------------------------+ +------------------------------------------------------------+ | XON/XOFF PASS-THROUGH | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Xn [cmds] | |--------------+---------------------------------------------| | Example: | AT \X7 O | |--------------+---------------------------------------------| | Description: | Selects whether XON/XOFF signals are sent | | | to remote modem. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> \X0 | XON/XOFF signals trapped by local modem. | |--------------+---------------------------------------------| | \X1 | XON/XOFF passed through local modem. |