CONNECTIONS
Purpose	Location	Purpose	Location
Line out	CN1	Line in	CN2

BASE I/O ADDRESS SELECTION
Port	SW1/1	SW1/2
COM1: (3F8h)	On	On
COM2: (2F8h)	Off	On
COM3: (3E8h)	On	Off
COM4: (2E8h)	Off	On

INTERRUPT SELECTION
IRQ	SW1/3	SW1/4	SW1/5	SW1/6
2	On	Off	Off	Off
3	Off	On	Off	Off
4	Off	Off	On	Off
5	Off	Off	Off	On

AUTO BAUD
Type:	Register
Format:	AT [cmds] S78=n [cmds]
Example:	AT S78=0 &W<CR>
Description:	Allows modem to connect at remote modem’s modulation.
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<CR>
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:	Register
Format:	AT [cmds] %An [cmds]
Example:	AT%A20<CR>
Default:	19
Range:	0-127
Unit:	ASCII
Description:	Sets the character used as the auto-reliable fallback character. %A0 will disable this function.

BAUD RATE ADJUST
Type:	Configuration
Format:	AT [cmds] \Jn [cmds]
Example:	AT &B0 \J0<CR>
Description:	Allows baud rate to follow serial port speed
Command	Function
» \J0	Baud rate adjust disabled.
\J1	Baud rate adjust enabled.

BREAK SEND
Type:	Configuration
Format:	AT [cmds] \Bn [cmds]
Example:	AT \B3 &W<CR>
Range:	1-25
Default	3
Unit:	.1 second
Description:	Sends break to modem.

BREAK TYPE
Type:	Configuration
Format:	AT [cmds] \Kn [cmds]
Example:	AT \K5 &W<CR>
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.

COMPRESSION
Type:	Configuration
Format:	AT %Cn
Example:	AT &B0 %C1 &I2<CR>
Description:	Selects data compression.
Command	Function
%C0	Data compression disabled.
» %C1	Data compression enabled.

CONNECT MODE
Type:	Configuration
Format:	AT [cmds] \Nn [cmds]
Example:	AT \N1 DT555-1212<CR>
Description:	Sets connect mode.
Command	Function
\N0	Normal mode enabled.
\N1	Direct mode enabled.
\N2	MNP mode only enabled.
\N3	MNP mode with fallback to normal mode enabled.
\N4	V.42 mode only enabled.
\N5	V.42 mode with fallback to normal mode enabled.
\N6	V.42 mode only enabled.
» \N6	V.42 and MNP mode with fallback to normal mode enabled.
\N7	MNP mode with fallback to normal mode enabled.

CTS SIGNAL
Type:	Configuration
Format:	AT [cmds] \Dn [cmds]
Example:	AT \D0<CR>
Description:	Selects the function of the CTS signal.
Command	Function
\D0	CTS forced high.
» \D1	CTS follows DTR.

ECHO DATA
Type:	Configuration
Format:	AT [cmds] \En [cmds]
\Example:	AT \E0 <CR>
Description:	Enables modem to echo received data.
Command	Function
\E0	Data echo disabled.
» \E1	Data echo enabled.

FLOW CONTROL
Type:	Configuration
Format:	AT [cmds] \Gn [cmds]
Example:	AT \G1 &K3<CR>
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<CR>
Description:	Sets type of flow control used by modem.
Command	Function
\Q0	Flow control disabled.
\Q1	Bidirectional XON/XOFF flow control enabled.
\Q2	CTS flow control by DCE enabled.
» \Q3	Bidirectional CTS/RTS flow control enabled.
\Q4	XON/XOFF flow control by DCE enabled.

HELP SCREENS
Type:	Immediate
Format:	AT %H
Example:	AT %H<CR>
Description:	Displays list of AT commands and their descriptions

INACTIVITY TIMER
Type:	Configuration
Format:	AT [cmds] \Tn [cmds]
Example:	AT\T20<CR>
Default:	0
Range:	0-255
Unit:	1 minute
Description:	Sets the length of time that the modem does not receive information before it disconnects.

LAP-M FRAME SIZE
Type:	Configuration
Format:	AT [cmds] \An [cmds]
Example:	AT \A3 %C1<CR>
Description:	Sets the maximum number of characters per frame of data.
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

MODE SELECTION
Type:	Immediate
Format:	AT [cmds] +FCLASS=n
Example:	AT +FCLASS=8<CR>
Description:	Sets what mode the modem will operate in.
Command	Function
+FCLASS=0	Data mode.
+FCLASS=1	Class 1 fax mode.
+FCLASS=2	Class 2 fax mode.
+FCLASS?	Displays current setting

PROTOCOL/SPEED
Type:	Immediate
Format:	AT [cmds] %Bn [cmds]
Example:	AT %B14400<CR>
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 uncoded speed.
%B12000	Select V.32bis at 12Kbps speed.
» %B14400	Select V.32bis at 14.4Kbps speed.

V.32bis AUTO-RETRAIN
Type:	Register
Format:	AT [cmds] S76=n [cmds]
Example:	AT S76=0 &W<CR>
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.

XON/XOFF PASS-THROUGH
Type:	Configuration
Format:	AT [cmds] \Xn [cmds]
Example:	AT \X7 O<CR>
Description:	Selects whether XON/XOFF signals are sent to remote modem.
Command	Function
» \X0	XON/XOFF signals trapped by local modem.
\X1	XON/XOFF passed through local modem.