AT&T PARADYNE DATAPORT 3710 Modem Type Data (synchronous/asynchronous)/Fax Maximum Data Rate 14.4Kbps Maximum Fax Rate 14.4Kbps Data Bus External Fax Class Class I & II Data Modulation Protocol Bell 103A/212A ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis Fax Modulation Protocol ITU-T V.17, V.21CH2, V.27ter, V.29 Error Correction/Compression MNP5, V.42, V.42bis [Image] CONNECTIONS Purpose Location Purpose Location Line out CN1 DC power CN4 Line in CN2 Power switch SW1 RS-232/422 CN3 DIAGNOSTIC LED(S) LED Color Status Condition EC Red On Error correction enabled EC Red Off Error correction disabled HS Red On Modem is operating at highest configured speed HS Red Off Modem is operating at less than highest configured speed CD Red On Carrier signal detected CD Red Off Carrier signal not detected OH Red On Modem is off-hook OH Red Off Modem is on-hook RD Red On Modem is receiving data RD Red Off Modem is not receiving data SD Red On Modem is transmitting data SD Red Off Modem is not transmitting data TR Red On DTR signal is high TR Red Off DTR signal is low MR Red On DSR signal is high MR Red Off DSR signal is low Proprietary AT Command Set AT COMMAND RESPONSE Type: Regtster Format: AT [cmds] S84=n [cmds] Example: AT S84=0 &W Description: Sets the response to AT commands. Command Function » S84=0 Normal operation S84=1 Execute valid commands, suppress error codes. S84=2 Ignore configuration commands, always return OK error code. AUTO BAUD Type: Register Format: AT [cmds] S78=n [cmds] Example: AT S78=0 &W Description: Allows modem to connect at remote modem’s modulation during V.32bis connection. Command Function » S78=0 Auto baud enabled. S78=1 Auto baud disabled. 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 » \CO Data is discarded. \C1 Data is buffered. \C2 Data is discarded, resets to \C1 on receipt of autoreliable fallback character. AUTO-RELIABLE FALLBACK CHARACTER Type: Configuration 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. BREAK TYPE Type: Configuration Format: AT [cmds] \Kn [cmds] Example: AT \K5 &W Description: Selects response to DTE break command. Command Function \K0 Send break, clear buffer, enter command mode. \K1 Send break, clear buffer. \K2 Send break, send data, enter command mode. \K3 Send break. send data. \K4 Send data, send break, enter command mode. » \K5 Send data, send break. CELLULAR ENHANCEMENTS Type: Register Format: AT [cmds] S91=n [cmds] Example: AT S91=0 &W Description: Configures modem to enhanced cellular mode Command Function » S91=0 Disabled S91=1 Enabled CD SIGNAL Type: Configuration Format: AT [cmds] &Cn [cmds] Example: AT &C3 &B0 Description: Configures the behavior of the carrier detect signal. Command Function » &C0 CD forced high. &C1 CD normal. &C2 Blink on disconnect. &C3 CD follows DTR. &C4 Simulated control carrier. &C5 CD follows DTR, forced low on disconnect. COMPRESSION Type: Configuration Format: AT %Cn Example: AT &B0 %C1 &I2 Description: Selects V.42 and MNP 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 V.42/MNP only enabled. » \N7 V.42/MNP with fallback to normal mode enabled. CONNECTION SPEED UPPER LIMIT Type: Immediate Format: AT [cmds] %Bn [cmds] Example: AT %B14400 Description: Selects the current DCE speed. Command Function %B300 Select V.21 or Bell103 at 300bps speed. %B1200 Select V.22,V.23 or Bell 212A at 1200bps speed. %B2400 Select V.22 at 2400bps speed. %B4800 Select v.32/V.32bis at 4800bps speed. %B7200 Select V.32bis at 7200bps speed. %B9600 Select V.32bis/V.32 at 9600bps speed. %B12000 Select V.32bis at 12Kbps speed. » %B14400 Select V.32bis at 14.4Kbps speed. 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 CTS interrupted for 2 seconds on disconnect. \D3 CTS follows DTR. DISCONNECT IMMEDIATELY Type: Configuration Format: AT [cmds] S85=n [cmds] Example: AT S85=0 &W Description: Disconnect immediately on receipt of disconnect signal from DTE or diagnostic control panel. Command Function » S85=0 Disabled. S85=1 Enabled. FAX DISABLE Type: Configuration Format: AT [cmds] S79=n [cmds] Example: AT S79=1 &W Description: Enables V.17 fax capability Command Function S79=0 Disable » S79=1 Enable 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 enabled. » \Q3 Bidirectional CTS/RTS flow control enabled. \Q4 XON/XOFF flow control by DCE enabled. \Q5 XON/XOFF flow control by DTE enabled. \Q6 RTS flow control by DTE enabled. INACTIVITY TIMER Type: Register Format: AT [cmds] \Tn [cmds] Example: AT\T20 Default: 0 Range: 0-255 Unit: 1 minute Description: Sets the length of time that the modem does not receive information before it disconnects. LAP-M FRAME SIZE Type: Configuration Format: AT [cmds] \An [cmds] Example: AT \A3 %C1 Description: Sets the maximum frame size for V.42 and MNP connections. Command Function \A0 Maximum frame size is 64 \A1 Maximum frame size is 128 \A2 Maximum frame size is 192 » \A3 Maximum frame size is 256 \A4 Maximum frame size is 32 \A5 Maximum frame size is 16 Note: Maximum V.42 frame size is 128. LAP-M FRAME WINDOW Type: Register Format: AT [cmds] S89=n [cmds] Example: ATS89=6 Default: 0 Range: 1-9 Unit: 1 frame (beginning with 0=6 frames) Description: Sets the number of frames used in V.42 and V.42bis transmissions LINE SPEED Type: Register Format: AT [cmds] S41=n [cmds] Example: ATS41=6 Default: 1 Description: Sets maximum line speed Command Function » S41=1 14.4Kbps V.32bis S41=2 12.0Kbps V.32bis S41=3 9600bps V.32bis, V.32 S41=4 7200bps V.32bis S41=5 4800bps V.32bis, V.32 S41=6 2400bps V.22bis S41=7 1200bps V.22 S41=8 1200bps 212A S41=10 0-300bps V21 S41=11 0-300bps 103j S41=12 1200/75bps V.23 S41=13 75/1200bps V.23 LOCK SERIAL PORT Type: Configuration Format: AT [cmds] S90=n [cmds] Example: AT S90=0 Description: Sets operation of serial port speed. Command Function S90=0 Disabled. S90=1 Serial speed follows connect speed. TRANSMISSION LEVEL Type: Register Format: AT [cmds] &In [cmds] Example: AT &I26 &W Default: 0 Range: -10dBm to -.25dBm Unit: -1 dBm Description: Sets the signal level for transmission TRANSMISSION LEVEL Type: Configuration Format: AT [cmds] &J0 [cmds] Example: AT &J0 &W Description: Sets permissive mode V.32bis AUTO-RETRAIN Type: Configuration Format: AT [cmds] S76=n [cmds] Example: AT S76=0 &W Description: Selects action the modem will take during bad line quality on 32bis connection. Command Function » S76=0 Auto retrain enabled. S76=1 Auto retrain disabled. S76=2 Auto retrain started at 4800bps. S76=3 Auto retrain started at 9600bps V.32bis TRAIN Type: Register Format: AT [cmds] S43=n [cmds] Example: AT S43=0 &W Description: Sets train length. Cellular setting is short. Command Function » S43=0 Long S43=1 Short 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.