Card Type	Modem (asynchronous)
Chip Set	Unidentified
Maximum Data Rate	2400bps
Data Bus	8-bit ISA
Data Modulation Protocol	Bell 103/212A ITU-T V.21, V.22, V.22bis
Error Correction/Compression	MNP5, V.42

CONNECTIONS
Function	Label		Function		Label
Line in		CN1		Line out		CN2

SERIAL PORT ADDRESS
Setting	SW1/1	SW1/2
COM1 (3F8h)	On	On
COM2 (2F8h)	Off	On
COM3 (3E8h)	On	Off
COM4 (2E8h)	Off	Off

INTERRUPT
Setting	SW2/1	SW2/2
2	Off	Off
3	On	Off
4	Off	On
5	Off	Off

AUTO-RELIABLE FALLBACK CHARACTER
Type:	Configuration
Format:	AT [cmds] %An [cmds]
Default:	0
Range:	0-127
Unit:	ASCII
Description:	Sets the character used as the auto-reliable fallback character; %A0 will disable this function.

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 \C0	Data is discarded
\C1	Data is buffered
\C2	Data is discarded; modem returns to normal mode on receiving auto-reliable fallback character.

BIT-MAPPED REGISTER S14
Format		AT [cmds] S14=n [cmds]
Default:		42
Range:		0-174
Unit:		Bit-mapped
Description:		Controls echo, result codes and 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	0 í 1	Tone dial enabled Pulse dial enabled
6	0	Not used
7	í 0 1	Answer mode enabled Originate mode enabled

BIT-MAPPED REGISTER S21
Format		AT [cmds] S21=n [cmds]
Default:		48
Range:		0-252
Unit:		Bit-mapped
Description:		Selects jack type, CTS/DCD/DSR signals, low DTR action, and the long space disconnect function.
Bit	Value	Function
1, 0	0	Not used
2	í 0 1	CTS follows RTS CTS 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 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:		0-255
Unit:		Bit-mapped
Description:		Controls speaker volume and controls, limits results codes, and make/break ratio.
Bit	Value	Function
1, 0	00 01 í 10 11	Off volume Low level 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	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
7	í 0 1	39/61ms at 10pps (North America) 33/67ms at 10pps (Europe)

BIT-MAPPED REGISTER S23
Format		AT [cmds] S23=n [cmds]
Default:		6
Range:		0-183
Unit:		Bit-mapped
Description:		Grants/denies remote digital loopback, controls DTE rate and parity, and sets guard tone.
Bit	Value	Function
0	í 0 1	Remote digital loopback allowed Remote digital loopback denied
2, 1	00 10 í 11	Sets serial port speed to 0-300bps Sets serial port speed to 1200bps Sets serial port speed to 2400bps
3	0	Not used
5,4	í 00 01 10 11	Parity even Space Parity Parity odd Mark Parity
7, 6	í 00 01 10	Guard tone disabled Guard tone 550Hz enabled Guard tone 1800Hz enabled

BIT-MAPPED REGISTER S27
Format		AT [cmds] S27=n [cmds]
Default:		64
Range:		0-68
Unit:		Bit-mapped
Description:		Selects line type, and ITU-T/Bell modes.
Bit	Value	Function
1, 0	0	Not used
2	í 0 1	Switched line Leased line
5 - 3	0	Not used
6	0 í 1	ITU/T mode Bell mode

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		Modem receives \B	Break from DTE Direct mode
\K0	Online command mode enabled, send no break to remote modem		Break sent to remote modem and buffered cleared	Send break to remote modem immediately, Online command mode enabled
\K1	Break sent to remote modem and buffered cleared		Break sent to remote modem and buffered cleared	Send break to remote modem immediately
\K2	Online command mode enabled, send no break to remote modem		Send break to remote modem immediately	Send break to remote modem immediately, Online command mode enabled
\K3	Send break to remote modem immediately		Send break to remote modem immediately	Send break to remote modem immediately
\K4	Online command mode enabled, send no break to remote modem		Send break with transmitted data	Send break to remote modem immediately, Online command mode enabled
í \K5	Send break with transmitted data		Send break with transmitted data	Send break to remote modem immediately

BAUD RATE ADJUST
Type:	Configuration
Format:	AT [cmds] \Jn [cmds]
Description:	Allows baud rate to follow serial port speed
Command	Function
í \J0	Baud rate adjust disabled
\J1	Baud rate adjust enabled

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

CONFIGURATION PROFILES
Type:	Immediate
Format:	AT [cmds] \Sn [cmds]
Description:	Displays active configuration profiles and stored profile 0 and 1.

CONNECT MODE
Type:	Configuration
Format:	AT [cmds] \Nn [cmds]
Description:	Controls the type of connection the modem will operate in
Command	Function
í \N0	Normal mode enabled
\N1	Direct mode enabled
\N2	MNP reliable mode enabled
\N3	MNP auto-reliable mode enabled
\N4	LAP-M reliable mode with detection enabled
\N5	LAP-M auto-reliable mode with detection enabled
\N6	LAP-M reliable mode without detection enabled
\N7	LAP-M auto-reliable mode without detection enabled

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

ECHO DATA
Type:	Configuration
Format:	AT [cmds] \En [cmds]
Description:	Enables modem to echo received data
Command	Function
í \E0	Data echo disabled
\E1	Data echo enabled

EXTENDED RESULT CODES
Type:	Configuration
Format:	AT [cmds] \Vn [cmds]
Description:	Selects extended result codes
Command	Function
\V0	Extended result codes disabled
í \V1	Extended result codes enabled

EXTENDED RESULT CODES - MNP
Type:	Configuration
Format:	AT [cmds] -Mn [cmds]
Description:	Selects the display of MNP result codes with extended result codes
Command	Function
-M0	Disable display of MNP connection service class
í -M1	Enable display of MNP connection service class while extended result codes are 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	XON/XOFF flow control enabled
í \Q2	CTS Unidirectional flow control enabled
\Q3	Bidirectional CTS/RTS flow control enabled

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.

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

PROTOCOL/SPEED
Type:	Configuration
Format:	AT [cmds] %Bn [cmds]
Description:	Selects the initial DCE speed
Command	Function
%B0	Select 300bps speed
%B1	Select 1200bps speed
í %B2	Select 2400bps speed

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	Modem not in remote digital loopback Remote digital loopback in progress
4	í 0 1	Remote digital loopback not in progress 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

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