Card Type	Modem (synchronous/asynchronous)
Chip Set	Unidentified
Maximum Data Rate	14.4Kbps
Maximum Fax Rate	14.4Kbps
Data Bus	8-bit ISA
Fax Class	Class I & II
Data Modulation Protocol	Bell 103/212A 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

CONNECTIONS
Function	Label		Function		Label
Line in		CN1		Line out		CN2

SERIAL PORT ADDRESS/INTERRUPT
Setting	Setting	JP1/1	JP1/2	JP1/3	JP1/4	JP1/5	JP1/6
COM1 (3F8h)	IRQ4	Open	Closed	Closed	Closed	Open	Open
COM2 (2F8h)	IRQ3	Open	Closed	Open	Open	Closed	Closed
COM3 (3E8h)	IRQ4	Closed	Open	Closed	Closed	Open	Open
COM4 (2E8h)	IRQ3	Closed	Open	Open	Open	Closed	Closed

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

BIT-MAPPED REGISTER S14
Format		AT [cmds] S14=n [cmds]
Default:		138
Range:		0-174
Unit:		Bit-mapped
Description:		Controls echo, result codes, result code display, dial mode, and answer/originate mode.
Bit	Value	Function
0	0	Not used
1	0 í 1	Command echo disabled Command echo enabled
2	í 0 1	Result codes disabled Result codes enabled
3	0 í 1	Display result codes in numeric format Display result codes in verbose format
4	0	Not used
5	í 0 1	Tone dial enabled Pulse dial enabled
6	0	Not used
7	0 í 1	Answer mode enabled Originate mode enabled

BIT-MAPPED REGISTER S21
Format		AT [cmds] S21=n [cmds]
Default:		4
Range:		0-253
Unit:		Bit-mapped
Description:		Selects jack type, CTS signal, low DTR action, DCD signal, DSR signal, and the long space disconnect function.
Bit	Value	Function
0	í 0 1	Selects RJ-11 jack Selects RJ-12 or RJ-13 jack
1	0	Not used
2	0 í 1	CTS follows RTS CTS forced high
4, 3	í 00 01 10 11	DTR signal ignored Modem goes to command mode on low DTR Modem disconnects on low DTR. Auto-Answer is disabled. Modem is initialized on low DTR
5	í 0 1	DCD forced high DCD normal
6	í 0 1	DSR forced high DSR normal
7	í 0 1	Long space disconnect function disabled Long space disconnect function enabled

BIT-MAPPED REGISTER S22
Format		AT [cmds] S22=n [cmds]
Default:		118
Range:		0-126
Unit:		Bit-mapped
Description:		Controls speaker volume and controls, and limits results codes.
Bit	Value	Function
1, 0	00 01 í 10	Speaker off Low volume Medium level volume
3, 2	00 í 01 10 11	Speaker off Speaker off on carrier Speaker always on Speaker on during handshake
6, 5, 4	000 100 101 110 í 111	Basic result codes only enabled Basic and connection speed result codes enabled Basic and connection speed result codes and dialtone detection enabled All result codes except dialtone detection enabled All result codes enabled

BIT-MAPPED REGISTER S23
Format		AT [cmds] S23=n [cmds]
Default:		183
Range:		0-189
Unit:		Bit-mapped
Description:		Grants/denies remote digital loopback, controls DTE rate and parity, and sets guard tone.
Bit	Value	Function
0	0 í 1	Remote digital loopback denied Remote digital loopback allowed
3, 2, 1	000 001 010 í 011 100 101 110	Sets serial port speed to 0-300bps Sets serial port speed to 600bps Sets serial port speed to 1200bps Sets serial port speed to 2400bps Sets serial port speed to 4800bps Sets serial port speed to 9600bps Sets serial port speed to 19200bps
5,4	00 01 10 í 11	Parity even Not used Space Parity No Parity
7, 6	00 01 í 10	Guard tone disabled Guard tone disabled Guard tone 1800Hz enabled

BIT-MAPPED REGISTER S27
Format		AT [cmds] S27=n [cmds]
Default:		9
Range:		0-110
Unit:		Bit-mapped
Description:		Selects synchronous/asynchronous mode, line type, clock source, and ITU-T/Bell modes.
Bit	Value	Function
3, 1, 0	000 001 010 011 100 í 101 110	Asynchronous mode Synchronous mode Synchronous mode, DTR dialing enabled Synchronous mode, DTR forced high Synchronous mode ERROR CORRECTION mode Buffered asynchronous mode
2	í 0 1	Dial up line Leased line
5, 4	í 00 01 10	Modem generates clock DTE generates clock Modem generates clock from the receive carrier signal
6	í 0 1	CCITT mode Bell mode

BIT-MAPPED REGISTER S28
Format		AT [cmds] S28=n [cmds]
Default:		0
Range:		0-24
Unit:		Bit-mapped
Description:		Controls pulse dialing
Bit	Value	Function
2 - 0	0	Not used
4, 3	í 00 01 10 11	39ms make/61ms break at 10pps 33ms make/67ms break at 10pps 39ms make/61ms break at 20pps 33ms make/67ms break at 20pps

BIT-MAPPED REGISTER S31
Format		AT [cmds] S31=n [cmds]
Default:		2
Range:		0-10
Unit:		Bit-mapped
Description:		Controls auto-baud function and result codes.
Bit	Value	Function
0	0	Not used
1	0 í 1	Auto-baud disabled Auto-baud enabled
3, 2	í 00 01 10	DTE speed displayed in result codes Extended result codes enabled; DCE speed displayed in result codes. DCE speed displayed in result codes

BIT-MAPPED REGISTER S40
Format		AT [cmds] S40=n [cmds]
Default:		104
Range:		0-232
Unit:		Bit-mapped
Description:		Selects break type and MNP block size.
Bit	Value	Function
2 - 0	0	Not used
5, 4, 3	000 001 010 011 100 í 101	\K0 \K1 \K2 \K3 \K4 \K5
7, 6	00 í 01 10 11	MNP block size is 64 characters MNP block size is 128 characters MNP block size is 192 characters MNP block size is 256 characters

BIT-MAPPED REGISTER S41
Format		AT [cmds] S41=n [cmds]
Default:		3
Range:		0-31
Unit:		Bit-mapped
Description:		Selects compression, auto-retrain, flow control, and MNP mode.
Bit	Value	Function
1 - 0	00 01 10 í 11	Data compression disabled MNP5 enabled V.42bis enabled MNP5 and V.42bis enabled
2	í 0 1	Auto-retrain disabled Auto-retrain enabled
3	í 0 1	Flow control disabled Flow control enabled
4	í 0 1	Stream mode for MNP Block mode for MNP

BREAK SEND
Type:	Configuration
Format:	AT [cmds] \Bn [cmds]
Default:	3
Range:	1-9
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 Reliable/Normal mode		Break from DTE Direct mode	Break from remote modem
\K0	Enter command mode, do not send break to remote modem		Send break to remote modem immediately, then enter command mode	Buffers cleared and break sent to DTE
\K1	Buffers cleared and break sent to remote modem		Send break to remote modem immediately	Buffers cleared and break sent to DTE
\K2	Enter command mode, do not send break to remote modem		Send break to remote modem immediately, then enter command mode	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 immediately, then enter command mode	Break sent with received data to the DTE
í \K5	Send break with transmitted data		Send break to remote modem immediately	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
í %C3	Both MNP5 and V.42bis

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

DISPLAY RECEIVED SIGNAL LEVEL
Type	Immediate
Format	AT [cmds] %L [cmds]
Range	9-43
Unit	-1 dBm
Description	Returns received signal level

FLASH DIAL MODIFIER TIME
Type	Register
Format	AT [cmds] S29=n [cmds]
Default:	0
Range:	0-255
Unit:	.1 seconds
Description:	Time the modem will go on-hook upon receiving the ! dial modifier in dial string.

FLOW CONTROL
Type:	Configuration
Format:	AT [cmds] \Gn [cmds]
Description:	Selects modem port flow control
Command	Function
í \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

LOCK SERIAL PORT
Type:	Configuration
Format:	AT [cmds] \Jn [cmds]
Description:	Sets operation of serial port speed
Command	Function
\J0	Serial speed locked
\J1	Serial speed follows connect speed

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
í \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

SLEEP TIMER
Type	Register
Format	AT [cmds] S24=n [cmds]
Default	0
Range	0-255
Unit	10 seconds
Description	Maximum duration of DTE and DCE inactivity allowed prior to initiating low-power sleep mode.

TEST MODES
Format		AT [cmds] S16=n [cmds]
Default:		0
Range:		0-125
Unit:		Bit-mapped
Description:		Controls loopback tests, analog, digital, remote digital, and self tests.
Bit	Value	Function
0	í 0 1	Local analog loopback not in progress Local analog loopback in progress
1	0	Not used
2	í 0 1	Local digital loopback not in progress Local digital loopback in progress
3	í 0 1	Remote digital loopback not requested Remote digital loopback requested
4	í 0 1	Modem not in remote digital loopback Remote digital loopback in progress
5	í 0 1	Remote digital loopback w/ self-test not in progress Remote digital loopback w/ self-test in progress
6	í 0 1	Local analog loopback w/ self-test not in progress Local analog loopback w/ self-test in progress