Card Type	Fax, 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

MISCELLANEOUS TECHNICAL NOTES

Diagram not available

SERIAL PORT ADDRESS
Setting	SW1/5	SW1/6
COM1 (3F8h)	On	On
í COM2 (2F8h)	On	Off
COM3 (3E8h)	Off	On
COM4 (2E8h)	Off	Off

INTERRUPT SELECTION
Setting	SW1/1	SW1/2	SW1/3	SW1/4
í 3	On	Off	Off	Off
4	Off	On	Off	Off
5	Off	Off	On	Off
7	Off	Off	Off	On

SUPPORTED COMMAND SET

Basic AT Commands

AT, ‘+++’, ‘Comma’, A/

A, B, C, D, E, F, , H, L, M, N, O, P, Q, S, T, V, W, X, Y, Z

&C, &D, &F, &G, &J, &K, &L, &M, &P, &Q, &R, &S, &T, &V, &W, &X, &Y, &Z

Extended AT Commands

\A, \B, \G, \L, \O, \T, \U, \Y, \Z, %E, %L, %Q

S Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S16, S18, S22, S25, S26, S36, S38, S46

S48, S82, S86, S91, S95

Note: See MHI Help file for full command documentation.

BIT-MAPPED REGISTER S14
Format:		AT [cmds] S14=n [cmds]
Default:		170
Range:		0-255
Unit:		Bit-mapped
Description:		Controls local echo, command echo, result codes and display, dial mode, and answer/originate mode.
Bit	Value	Function
0	í 0 1	Disable local echo Enable local echo
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	í 0 1	Smart mode enabled Dumb mode enabled
5	0 í 1	Tone dial enabled Pulse dial enabled
6	í 0 1	Result codes enabled Result codes enabled when originating
7	0 í 1	Answer mode enabled Originate mode enabled

BIT-MAPPED REGISTER S21
Format		AT [cmds] S21=n [cmds]
Default:		0
Range:		0-255
Unit:		Bit-mapped
Description:		Selects jack type, setting profile, CTS/DCD/DSR signals, low DTR action, and the long space disconnect function.
Bit	Value	Function
0	í 0 1	Selects RJ-11, RJ-41S, or RJ45S jack Selects RJ-12 or RJ-13 jack
1	í 0 1	Default profile User-defined profile
2	í 0 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 S23
Format		AT [cmds] S23=n [cmds]
Default:		7
Range:		0-191
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 - 1	000 001 010 í 011 100 101 110 111	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 Sets serial port speed to 38400bps
5, 4	í 00 01 10 11	Parity even Space Parity Parity odd Mark or No 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:		0-127
Unit:		Bit-mapped
Description:		Selects synchronous/asynchronous mode, line type, clock source, and ITU-T/Bell modes.
Bit	Value	Function
3, 1, 0	í 000 001 010 011 100 101 110 111	Asynchronous mode, serial port speed follows connect speed Asynchronous off-line command mode and synchronous connect mode Asynchronous off-line command mode; modem autodials first number in directory, then synchronous connect mode Asynchronous off-line command mode on low DTR, synchronous connect mode on high DTR Modem returns ‘OK’ Error correction mode Asynchronous mode during Normal connect mode Modem returns ‘OK’
2	í 0 1	Switched line Leased line
5, 4	í 00 01 10	Local modem generates transmit clock source Local DTE generates transmit clock source Remote DCE/DTE generates transmit clock source
6	0 í 1	ITU/T mode Bell mode

BIT-MAPPED REGISTER S40
Format		AT [cmds] S40=n [cmds]
Default:		119
Range:		0-255
Unit:		Bit-mapped
Description:		Controls connect mode, break handling, MNP block size, and flow control.
Bit	Value	Function
1, 0	00 01 10 í 11	Normal mode enabled Direct mode enabled Reliable mode enabled Auto-reliable mode enabled
4, 3, 2	000 001 010 011 100 í 101	\K0 \K1 \K2 \K3 \K4 \K5
6, 5	00 01 10 í 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
7	í 0 1	Flow control disabled Flow control enabled

BIT-MAPPED REGISTER S41
Format		AT [cmds] S41=n [cmds]
Default:		1
Range:		0-7
Unit:		Bit-mapped
Description:		Selects compression, auto-retrain, and MNP mode.
Bit	Value	Function
0	0 í 1	Data compression disabled Data compression enabled
1	í 0 1	Auto-retrain disabled Auto-retrain enabled
2	í 0 1	Stream mode for MNP Block mode for MNP

BREAK TYPE
Type:		Configuration
Format:		AT [cmds] \Kn [cmds]
Description:		Configures action of break signal
Command	Break from DTE during MNP mode		Break received from remote modem	Break from DTE during Direct mode
\K0	Online command mode enabled, send no break to remote modem		Buffers cleared, break sent to DTE	Online command mode enabled, send no break to remote modem
\K1	Break sent to remote modem and buffers cleared		Buffers cleared, break sent to DTE	Break sent to remote modem and buffers cleared
\K2	Online command mode enabled, send no break to remote modem		Break sent immediately to DTE	Online command mode enabled, send no break to remote modem
\K3	Send break to remote modem immediately		Break sent immediately to DTE	Send break to remote modem immediately
\K4	Online command mode enabled, send no break to remote modem		Break sent with received data to the DTE	Online command mode enabled, send no break to remote modem
\K5	Send break with transmitted data		Break sent with received data to the DTE	Send break with transmitted data

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

CONNECT MODE
Type:	Configuration
Format:	AT [cmds] \Nn [cmds]
Description:	Controls the type of connection the modem will operate in
Command	Function
\N0	Normal mode enabled
\N1	Direct mode enabled
\N2	Reliable mode enabled
í \N3	Auto-reliable mode enabled

DCE LINE SPEED
Type:	Register
Format	AT [cmds] S37=n [cmds]
Description:	Sets the maximum allowable data exchange rate attempted during handshake process.
Command	Function
í S37=0	Speed of last connection
S37=1	300bps
S37=2	300bps
S37=3	300bps
S37=5	1200bps
S37=6	2400bps
S37=8	4800bps
S37=9	9600bps
S37=10	12.0Kbps
S37=11	14.4Kbps
S37=12	7200bps

ECHO CANCELLATION
Type:	Configuration
Format:	AT [cmds] \En [cmds]
Description:	Optimize echo cancellation

REPORT INFORMATION
Type:	Immediate
Format:	AT [cmds] In [cmds]
Description:	Displays information requested
Command	Function
I0	Reports product code
I1	Reports ROM checksum
I2	Tests and reports ROM checksum, as ‘OK’ or ‘ERROR’
I3	Reports firmware manufacturer identification and checksum
I4	Reports product capabilities

V.42 - CLEAR DICTIONARY
Type:	Immediate
Format:	AT [cmds] %P [cmds]
Description:	Clears the V.42 encoder dictionary

V.42bis - COMPRESSION CONTROL
Type:	Configuration
Format:	AT [cmds] %Mn [cmds]
Description:	Controls V.42bis data compression
Command	Function
%M0	V.42bis disabled
%M1	V.42bis when transmitting enabled
%M2	V.42bis when receiving enabled
í %M3	V.42bis when transmitting/receiving enabled

V.42bis - DICTIONARY SIZE
Type:	Configuration
Format:	AT [cmds] %Dn [cmds]
Description:	Select V.42 dictionary size
Command	Function
%D0	Select 512 bytes
%D1	Select 1024 bytes
í %D2	Select 2048 bytes
%D3	Select 4096 bytes, one-way compression

V.42bis - MAXIMUM STRING LENGTH
Type:	Immediate
Format:	AT [cmds] %Sn [cmds]
Default:	32
Range:	6-250
Unit:	Characters
Description:	Selects string size for V.42bis compression