Card Type	Modem(asynchronous)
Chip Set	Intel
Maximum Data Rate	2400bps
Maximum Fax Rate	9600bps
Data Bus	16 bit ISA
Fax Class	Class I & II
Data Modulation Protocol	Bell 103A/212A ITU-T V.21, V.22, V.22bis
Fax Modulation Protocol	Unidentified
Error Correction/Compression	MNP5, V.42, V.42bis

CONNECTIONS
Function	Label		Function		Label
Line in		CN1		Unidentified		CN3
Line out		CN2

ACCEPT RELIABLE CONNECTION
Type:	Configuration
Format:	AT [cmds] \U [cmds]
Description:	Accepts remote modem’s request for MNP reliable link.

AUTO-RELIABLE FALLBACK CHARACTER
Type:	Configuration
Format:	AT [cmds] %An [cmds]
Default:	19
Range:	0-127
Unit:	ASCII
Description:	Sets the character used as the auto-reliable fallback character

AUTO-RELIABLE TIME BUFFER CONFIGURATION
Type:	Configuration
Format:	AT [cmds] \Cn [cmds]
Description:	Controls the handling of incoming data during auto-reliable time period
Command	Function
í \CO	Disabled
\C1	Enable 200 character buffer. If 200 characters received without reliable character, establish normal connection
\C2	Auto reliable buffer disabled. Establish normal connection on receipt of escape character

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 enabled Result codes disabled
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:		48
Range:		0 - 254
Unit:		Bit-mapped
Description:		Controls S23, CTS action, DTR action, DCD action, DSR action and the Long Space Disconnect function.
Bit	Value	Function
0	0	Not used
1	0 1	Option 1 for bits 1, 2 and 3 of S32 enabled Option 2 for bits 1, 2 and 3 of S23 enabled
2	í 0 1	CTS signal normal CTS signal forced high
4, 3	00 01 í 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	0 í 1	DCD signal forced high DCD signal normal
6	í 0 1	DSR signal forced high DSR signal 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:		0-255
Unit:		Bit-mapped
Description:		Controls speaker, result codes and make/break ratio
Bit	Value	Function
1, 0	00 01 í 10 11	Off volume On volume Medium level volume High 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	Blind dial and basic result codes only enabled Blind dial and basic and connection speed result codes enabled Blind dial and basic and connection speed result codes and dialtone detection enabled Blind dial, basic and connection speed result codes and dialtone detection enabled Blind dial, basic and connection speed result codes, busy and dialtone detection enabled
7	í 0 1	Make/Break pulse ratio at 39/61 Make/Break pulse ration at 33/67

BIT-MAPPED REGISTER S23
Format		AT [cmds] S23=n [cmds]
Default:		Unidentified
Range:		0-191
Unit:		Bit-mapped
Description:		Grants/denies remote digital loopback, controls DTE rate and parity, and sets guard tone
Note: See S21 bit one to set option 1 and 2
Bit	Value	Function
0	0 í 1	Remote digital loopback ignored Remote digital loopback accepted
Option 1 (bit 1 of S21 = 0)
3, 2, 1	000 001 010 011 101 110 111	Sets serial port speed to 0-300bps 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 19.2Kbps Sets serial port speed to 38.4Kbps
Option 2 (bit 1 of S21 = 1)
3, 2, 1	000 001 010	Sets serial port speed to 12.0Kbps Sets serial port speed to 14.4Kbps Sets serial port speed to 57.6Kbps
5,4	00 í 01 10 11	Parity even Parity space/no parity Parity odd Parity mark
7, 6	00 01 í 10	Guard tone disabled 550Hz guard tone enabled 1800Hz guard tone enabled

BIT-MAPPED REGISTER S27
Format		AT [cmds] S27=n [cmds]
Default:		73
Range:		0 - 255
Unit:		Bit-mapped
Description:		Controls communications mode, line type, and protocol type
Bit	Value	Function
0	0	Not used
1	0	Not used
7, 2	í00 01 10 11	Switched line Leased line Not used Leased line
3	0	Not used
4	0	Not used
5	0	Not used
6	í 0 1	Select CCITT protocols Select Bell protocols

BREAK SEND
Type	Configuration
Format	AT [cmds] \Bn [cmds]
Default	3
Range	1 -9
Unit	.1 second
Description	Sends break of n

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

COMPRESSION
Type:	Configuration
Format:	AT %Cn
Description:	Selects MNP5 data compression
Command	Function
%C0	Data compression disabled
í %C1	Data compression enabled

CONNECT MODE
Type:	Configuration
Format:	AT [cmds] \Nn [cmds]
Description:	Sets connect mode
Command	Function
\N0	Normal mode enabled
\N2	MNP mode enabled
\N3	LAPM mode enabled
í \N4	LAPM mode enabled

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 TYPE
Type:	Configuration
Format:	AT [cmds] \Qn [cmds]
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
í \Q3	Bidirectional CTS/RTS flow control enabled
\Q4	XON/XOFF flow control by DCE enabled
\Q5	CTS flow control by DCE enabled. CTS low until connection established
\Q6	Bidirectional CTS/RTS flow control enabled. CTS low until connection established

INACTIVITY TIMER
Type:	Configuration
Format:	AT [cmds] \Tn [cmds]
Default:	0
Range:	0-90
Unit:	1 minute
Description:	Sets the length of time that the modem does not receive information before it disconnects

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

LOOPBACK TESTS
Format		AT [cmds] S16=n [cmds]
Default:		0
Range:		0 - 125
Unit:		Bit-mapped
Description:		Enables loopback tests
Bit	Value	Function
0	í 0 1	Local analog loopback test disabled Local analog loopback test enabled
1	0	Not used
2	í 0 1	Local digital loopback test disabled Local digital loopback test enabled
3	í 0 1	Modem is not performing remotely requested remote digital loopback test Modem is performing remotely requested remote digital loopback test
4	í 0 1	Modem is not performing locally requested remote digital loopback test Modem is performing locally requested remote digital loopback test
5	í 0 1	Remote digital loopback with local self-test disabled Remote digital loopback with local self-test enabled
6	í 0 1	Local analog loopback with local self-test disabled Local analog loopback with local self-test 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
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
í \L0	Stream mode for MNP enabled
\L1	Block mode for MNP enabled

RESULT CODE FORMAT
Type:	Configuration
Format:	AT [cmds] \Vn [cmds]
Description:	Selects format for information-text and result codes
Command	Function
V0	Numeric format enabled
V1	Verbose (word) format enabled

SWITCH TO NORMAL MODE
Type:	Configuration
Format:	AT [cmds] \Z [cmds]
Description:	Switches to normal mode from MNP mode

TEST TIME LIMIT
Type	Configuration
Format	AT [cmds] S18=n [cmds]
Default	0
Range	0 - 255
Unit	1 second
Description	Limits time allowed for diagnostic test

V.42 DETECTION PHASE
Type:	Configuration
Format:	AT [cmds] -Jn [cmds]
Description:	Controls V.42 detection
Command	Function
-J0	V.42 detection disabled
í -J1	V.42 detection enabled

V.42bis COMPRESSION CONTROL
Type:	Configuration
Format:	AT [cmds] "Hn [cmds]
Description:	Controls V.42bis data compression
Command	Function
"H0	V.42bis disabled
"H1	V.42bis when transmitting enabled
"H2	V.42bis when receiving enabled
í "H3	V.42bis when transmitting/receiving enabled

V.42bis MAXIMUM STRING LENGTH
Type:	Configuration
Format:	AT [cmds] "O=n [cmds]
Default:	250
Range:	6 -250
Unit:	Unidentified
Description:	Selects string size for V.42bis compression

XON/XOFF PASS-THROUGH
Type:	Configuration
Format:	AT [cmds] \Xn [cmds]
Description:	Selects whether XON/XOFF signals are sent to remote modem
Command	Function
í \X0	XON/XOFF signals trapped by local modem
\X1	XON/XOFF passed through local modem