Card Type	Modem (asynchronous/synchronous)
Chipset	Rockwell
Maximum Data Rate	33.6Kbps
Maximum Fax Rate	14.4Kbps
Data Modulation	Bell 103A/212A ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.34 Rockwell V.FC
Fax Modulation	ITU-T V.17, V.21CH2, V.27ter, V.29
Error Correction/Compression	MNP5, V.42, V.42bis
Fax Class	Class I & II
Data Bus	8-bit ISA
Card Size	Full height, one-third length

CONNECTIONS
Function	Label	Function	Label
Telephone line	CN1	Telephone line	CN2

BASE I/O ADDRESS SELECTION
Setting	SW1/3	SW1/4
3F8h (COM1:)	Closed	Closed
2F8h (COM2:)	Closed	Open
3E8h (COM3:)	Open	Closed
2E8h (COM4:)	Open	Open

INTERRUPT SELECTION
Setting	JP1	JP2	JP3	SW1/1	SW1/2
2	Open	Open	Closed	Open	Open
3	Open	Open	Open	Closed	Open
4	Open	Open	Open	Open	Closed
5	Open	Closed	Open	Open	Open
7	Closed	Open	Open	Open	Open

SUPPORTED STANDARD COMMANDS

Basic AT Commands

+++, ‘comma’, A/

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

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

Extended AT Commands

\A, \B, \G, \J, \L, \N, \O, \T, \U, \Z

%C, %E, %Q

Special AT Commands

+MS

S-Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S14, S16, S18, S25, S26

S30, S36, S38, S39, S46, S48, S82, S86, S91, S95

Note: See MHI help file for complete information.

UNIDENTIFIED COMMANDS
Command	Default
S21	Unidentified
S22	Unidentified
S23	Unidentified
S27	Unidentified
S37	0
S40	57
S41	1
S49	8
S50	255

AUTOSYNC OPTIONS
Type:		Register
Format		AT [cmds] S19=n [cmds]
Default:		26
Range:		0 - 30
Description:		Controls autosync protocol, HDLC address detection, bit coding, and HDLC idle.
Bit	Value	Function
0	0	Not used
1	0 í 1	Binary synchronous protocol used. HDLC protocol used.
2	í 0 1	HDLC address detect disabled. HDLC address detect enabled.
3	0 í 1	NRZI bit coding used. NRZ bit coding used.
4	0 í 1	HDLC idle sends MARK. HDLC idle sends FLAG or SYNC.

AUTOSYNC HDLC ADDRESS
Type:	Register
Format:	AT [cmds] S20=n [cmds]
Default:	0
Range:	0-255
Unit:	Unidentified
Description:	Sets the HDLC address and binary synchronous character.

BREAK TYPE
Type:	Configuration
Format:	AT [cmds] \Kn [cmds]
Description:	Configures action of break signal.
Command	Function
\K0	Online command mode enabled, break not sent to remote modem.
\K1	Break sent to remote modem and buffers cleared.
\K3	Break sent to remote modem immediately.
\K5	Break sent with transmitted data.

DIAL
Type:	Immediate
Format:	AT [cmds] D<#>;[cmds]
Description:	Dials the telephone number indicated according to any modifiers included in the string.
Note:	Any combination of modifiers can be used to produce the desired dial functions in sequence.
Command	Function
DL	Re-dial last number.
DP	Pulse dialing enabled.
DR	Answer mode enabled; originate mode disabled following handshake initiation.
DS=n	Dial stored telephone number n.
DT	Tone dialing enabled.
DW	Dialing resumed following dial tone detection.
D,	Dialing paused for amount of time specified in S8 register.
D!	Flash function initiated. Modem commanded to go off-hook for specified time before returning on-hook.
D@	Wait for Quiet Answer function enabled. Modem waits until a "quiet answer," a ring-back signal followed by silence up to the time specified in S7, is received prior to executing the rest of the dial string.
D^	Enable calling tone for this call.
D;	Modem returned to idle state after dialing. The semicolon can only be placed at the end of the dial command.

DISPLAY INFORMATION
Type:	Immediate
Format:	AT [cmds] In [cmds]
Description:	Displays information requested about the modem.
Command	Function
I0	Displays product identification code.
I1	Displays ROM checksum.
I2	Tests and displays ROM checksum result.
I3	Displays firmware revision.
I4	Displays product capabilities.

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 enabled on transmit only.
%M2	V.42bis enabled on receive only.
%M3	V.42bis enabled.

V.42bis DICTIONARY CLEAR
Type:	Immediate
Format:	AT [cmds] %P [cmds]
Description:	Resets the V.42bis dictionary to its initial state upon connection.

V.42bis DICTIONARY SIZE
Type:	Configuration
Format:	AT [cmds] %Dn [cmds]
Description:	Selects the size of the V.42bis dictionary.
Command	Function
%D0	512 byte dictionary selected.
%D1	1024 byte dictionary selected.
%D2	2048 byte dictionary selected.
%D3	4096 byte dictionary selected for unidirectional compression only.

V.42bis MAXIMUM STRING LENGTH
Type:	Immediate
Format:	AT [cmds] %Sn [cmds]
Default:	32
Range:	6-64
Unit:	1 byte
Description:	Selects string size for V.42bis compression