Card Type	Modem (asynchronous)
Chipset	Unidentified
Maximum Data Rate	14.4Kbps
Maximum Fax Rate	14.4Kbps
Data Bus	8-bit ISA
Fax Class	Class I & II
Data Modulation	Bell 103A/212A ITU-T V.21, V.22, V.22bis, V.32, V.32bis
Fax Modulation	V.17, V.27ter, V.29
Error Correction/Compression	MNP5, V.42bis

CONNECTIONS
Function	Label	Function	Label
Line in/out	CN1	Line in/out	CN2

SERIAL PORT ADDRESS SELECTION
Setting	JP1
3F8h (COM1:)	Pins 1 & 2, 7 & 8 closed
2F8h (COM2:)	Pins 1 & 2, 8 & 9 closed
3E8h (COM3:)	Pins 2 & 3, 7 & 8 closed
2E8h (COM4:)	Pins 2 & 3, 8 & 9 closed

INTERRUPT SELECTION
Setting	JP1
IRQ2	Pins 10 & 11 closed
IRQ3	Pins 11 & 12 closed
IRQ4	Pins 5 & 6 closed
IRQ5	Pins 4 & 5 closed

SUPPORTED STANDARD COMMANDS

Basic AT Commands

+++, ‘comma’, A/

A, D, E, H, L, M, N, Q, V, W, X, Y, Z

&D, &F, &K, &V, &W, &Y, &Z

S-Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S25, S30, S36, S38, S46, S48, S82

S86, S95, S108, S109, S110

Note: See MHI documentation for complete information.

UNIDENTIFIED COMMANDS
Command	Default
S37	0
S43	0

AUTO-ANSWER MODE
Type:	Configuration
Format:	AT [cmds] &An [cmds]
Description:	Sets the mode the modem will operate in on auto-answer.
Command		Function
í &A0		Modem auto-answers in answer mode.
&A1		Modem auto-answers in originate mode.

AUTO-RETRAIN
Type:	Configuration
Format:	AT [cmds] &Bn [cmds]
Description:	Selects whether the modem will automatically perform a retrain sequence when line conditions change.
Command		Function
&B0		Auto-retrain disabled.
í &B1		Auto-retrain enabled.

CD SIGNAL
Type:	Configuration
Format:	AT [cmds] &Cn [cmds]
Description:	Controls the behaviour of the CD signal.
Command	Function
í &C0	CD forced high.
&C1	CD forced high after carrier signal is detected.
&C2	CD forced high except during disconnect.

COMMUNICATIONS MODE
Type:	Configuration
Format:	AT [cmds] &Qn [cmds]
Description:	Selects the communications mode the modem will use.
Command	Mode
&Q0	Asynchronous direct mode.
í &Q5	Asynchronous V.42 reliable mode.
&Q6	Buffered asynchronous mode.
&Q8	Asynchronous MNP reliable mode.
&Q9	Asynchronous V.42bis only mode.

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 reports ROM checksum.
I3	Displays firmware revision.
I4	Displays feature bitmap.

EXTENDED RING
Type:		Register
Format:		AT [cmds] S101=n [cmds]
Default:		0
Range:		0-255
Unit:		Bit-mapped
Description:		Selects which extended ring types the modem will respond to.
Bit	Value	Function
0	í 0 1	Do not respond to ring type A. Respond to ring type A.
1	í 0 1	Do not respond to ring type B. Respond to ring type B.
2	í 0 1	Do not respond to ring type C. Respond to ring type C.
3	í 0 1	Do not respond to ring type D. Respond to ring type D.
4	í 0 1	Do not respond to ring type E. Respond to ring type E.
5	í 0 1	Do not respond to ring type F. Respond to ring type F.
6	í 0 1	Do not respond to ring type G. Respond to ring type G.
7	í 0 1	Report RING for all ring types. Report RING n where n is the ring type.

ON-LINE
Type:	Immediate
Format:	AT [cmds] On
Description:	Instructs the modem to return to on-line state.
Command	Function
O0	Return to on-line state.
O1	Return to on-line state and initiate retrain sequence.
O3	Return to on-line state and initiate renegotiation sequence.

PROTOCOL
Type:	Configuration
Format:	AT [cmds] Bn [cmds]
Description:	Selects the communication protocol for low-speed data calls.
Command	Protocol
B0	Modem will use ITU-T V.22 at 1200bps.
í B1	Modem will use Bell 212A at 1200bps.
B2	Modem will use ITU-T V.23 at receive 1200/transmit 75bps.
B3	Modem will use ITU-T V.23 at receive 75/transmit 1200bps.
B15	Modem will use ITU-T V.21 at 300bps.
í B16	Modem will use Bell 103A at 300bps.

TRELLIS CODING
Type:	Configuration
Format:	AT [cmds] &Un [cmds]
Description:	Selects whether the modem will use trellis coding.
Command		Function
í &U0		Trellis coding enabled.
&U1		Trellis coding disabled.