CONNECTIONS
Purpose	Location	Purpose	Location
Line out	CN1	Line in	CN2

BASE I/O ADDRESS SELECTION
Port	SW1/1	SW1/2	SW1/3	SW1/4
COM1: (3F8h)	On	Off	Off	Off
COM2: (2F8h)	Off	On	Off	Off
COM3: (3E8h)	Off	Off	On	Off
» COM4: (2E8h)	Off	Off	Off	On

INTERRUPT SELECTION
IRQ	JP1/A	JP1/B	JP1/C	JP1/D
2	Open	Open	Open	Closed
» 3	Closed	Open	Open	Open
4	Open	Closed	Open	Open
5	Open	Open	Closed	Open

AUTO-RETRAIN
Type:	Configuration
Format:	AT [cmds] %En [cmds]
Description:	Selects auto-retrain mode
Command	Function
» %E0	Auto-retrain disabled
%E1	Auto-retrain enabled

BIT-MAPPED REGISTERS
Register	Default
S14	138
S16	0
S21	4
S22	117
S23	183
S27	9
S28	0
S31	2
S40	105
S41	195
S80	Unidentified

BREAK SEND
Type:	Configuration
Format:	AT [cmds] \Bn [cmds]
Default:	Unidentified
Range:	Unidentified
Unit:	.1 second
Description:	Sends break to modem

BREAK TYPE
Type:	Configuration
Format:	AT [cmds] \Kn [cmds]
Description:	Configures action of break signal
Command		Break from DTE	Modem receives \B	Break from remote modem
\K0		Enter command mode, do not send break to remote modem	Buffers cleared and break sent to remote modem	Buffers cleared and break sent to DTE
\K1		Buffers cleared and break sent to remote modem	Buffers cleared and break sent to remote modem	Buffers cleared and break sent to DTE
\K2		Enter command mode, do not send break to remote modem	Send break to remote modem immediately	Send break to DTE immediately
\K3		Send break to remote modem immediately	Send break to remote modem immediately	Send break to DTE immediately
\K4		Enter command mode, do not send break to remote modem	Send break to remote modem with transmitted data	Break sent with received data to the DTE
» \K5		Send break with transmitted data	Send break to remote modem with transmitted data	Break sent with received data to the DTE

COMPRESSION
Type:	Configuration
Format:	AT [cmds] %Cn [cmds]
Description:	Selects data compression
Command	Function
%C0	Data compression disabled
%C1	MNP5 enabled
%C2	V.42bis enabled
» %C3	MNP5 and V.42bis enabled

CONNECT MODE
Type:	Configuration
Format:	AT [cmds] \Nn [cmds]
Description:	Sets connect mode
Command	Function
\N0	Normal mode enabled
\N1	Direct mode enabled
\N2	Reliable mode enabled
» \N3	Auto-reliable mode enabled
\N4	LAP-M mode only enabled
\N5	MNP mode only enabled

DISPLAY CURRENT COMMAND STATUS
Type:	Immediate
Format:	AT [cmds] \S [cmds]
Description:	Displays current setting of modem commands

DISPLAY STORED NUMBERS
Type:	Immediate
Format:	AT [cmds] \F [cmds]
Description:	Displays all stored phone numbers

FAX TRANSMIT LEVEL
Type:	Register
Format:	AT [cmds] S92=n [cmds]
Default:	10
Range:	0-15
Unit:	-1dBm
Description:	Controls fax transmission level

FLOW CONTROL
Type:	Configuration
Format:	AT [cmds] \Gn [cmds]
Description:	Selects modem port flow control
Command	Function
» \G0	Flow control disabled
\G1	Flow control enabled

FLOW CONTROL CHARACTER - XOFF
Type:	Register
Format:	AT [cmds] S33=n [cmds]
Default:	19
Range:	0-255
Unit:	ASCII
Description:	Sets the character used to represent XOFF

FLOW CONTROL CHARACTER - XON
Type:	Register
Format:	AT [cmds] S32=n [cmds]
Default:	17
Range:	0-255
Unit:	ASCII
Description:	Sets the character used to represent XON

LEASED LINE TRANSMISSION LEVEL
Type:	Register
Format:	AT [cmds] S99=n [cmds]
Default:	10
Range:	0-15
Unit:	-1 dBm
Description:	Sets the signal level for transmission when in leased-line mode

LINE SIGNAL LEVEL
Type:	Immediate
Format:	AT [cmds] %L [cmds]
Description:	Returns received line signal level

LINE TYPE
Type:	Configuration
Format:	AT [cmds] %Mn [cmds]
Description:	Selects AUXCTL output
Command	Function
%M0	AUXCTL output low enabled
%M1	AUXCTL output high enabled

MAXIMUM BLOCK SIZE FOR TRANSMISSION
Type:	Configuration
Format:	AT [cmds] \An [cmds]
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

MNP STREAM/BLOCK MODE
Type:	Configuration
Format:	AT [cmds] \Ln [cmds]
Description:	Selects the transfer mode for MNP
Command	Function
» \L0	Stream mode for MNP enabled
\L1	Block mode for MNP enabled

PSTN TRANSMIT LEVEL
Type:	Register
Format:	AT [cmds] S91=n [cmds]
Default:	10
Range:	0-15
Unit:	-1dBm
Description:	Controls PSTN transmission level

REPORT LINE SIGNAL QUALITY
Type:	Immediate
Format:	AT [cmds] %Q [cmds]
Description:	Reports line signal quality. If the value is greater than 7, the modem will retrain.

SLEEP TIMER
Type:	Register
Format	AT [cmds] S24=n [cmds]
Default:	0
Range:	0-255
Unit:	1 second
Description:	Maximum duration of DTE and DCE inactivity allowed prior to initiating low-power sleep mode

TEST MODE - PTT
Type:	Immediate
Format:	AT [cmds] %T [cmds]
Description:	Send PTT test signals for European line test

V.23 SPLIT BAUD MODE
Type:	Configuration
Format:	AT [cmds] \Wn [cmds]
Description:	Controls V.23 split baud mode
Command	Function
\W0	V.23 split baud mode disabled
\W1	V.23 split baud mode enabled

V.23 SPEED DIRECTION
Type:	Configuration
Format:	AT [cmds] %Fn [cmds]
Description:	Selects V.23 speed and direction
Command	Function
%F1	1200bps receive/75bps transmit enabled
%F2	1200bps transmit/75bps receive enabled