Card Type	Modem (asynchronous)
Chipset	Unidentified
Maximum Data Rate	9600bps
Data Modulation	Bell 103A, 212A ITU-T V.21, V.22, V.22bis, V.32
Error Correction/Compression	MNP5, V.42, V.42bis
Data Bus	Serial

CONNECTIONS
Function	Label	Function	Label
Telephone line in	CN1	Serial port	CN3
Telephone line out	CN2	DC power in	CN4

DIAGNOSTIC LED(S)
LED	Color	Status	Condition
HS	Green	On	Modem is operating at 4800bps or faster
HS	Green	Off	Modem is operating at slower than 4800bps
AA	Green	On	Auto-answer enabled
AA	Green	Off	Auto-answer disabled
AA	Green	Blinking	Phone is ringing
CD	Green	On	Carrier signal detected
CD	Green	Off	Carrier signal not detected
OH	Green	On	Modem is off-hook
OH	Green	Off	Modem is on-hook
RD	Green	Blinking	Modem is receiving data
RD	Green	Off	Modem is not receiving data
SD	Green	Blinking	Modem is transmitting data
SD	Green	Off	Modem is not transmitting data
TR	Green	On	DTR signal is high
TR	Green	Off	DTR signal is low
MR	Green	On	Power is on
MR	Green	Off	Power is off

SUPPORTED STANDARD COMMANDS

Basic AT Commands

+++, ‘comma’, A/

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

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

Extended AT Commands

\A, \B, \C, \G, \J, \N, \O, \Q, \T, \U, \V, \X, \Y, \Z

%A, %C, %E, %G

Special AT Commands

-C, -J, "H, "O

S-Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S14, S16, S18, S21, S22, S25, S26

S27, S30, S37, S95

Note: See MHI help file for complete information.

BIT-MAPPED REGISTER S23
Format		AT [cmds] S23=n [cmds]
Default:		Unidentified
Range:		0-189
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	000 001 010 011 100 101 110 í 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 or 14.4Kbps. Sets serial port speed to 19.2Kbps. Sets serial port speed to 38.4Kbps or 57.6Kbps.
5, 4	í 00 01 10 11	Use even parity. Use SPACE parity. Use odd parity. Use MARK or no parity.
7, 6	í 00 01 10	Guard tone disabled. Guard tone 550Hz enabled. Guard tone 1800Hz enabled.

BREAK TYPE
Type:		Configuration
Format:		AT [cmds] \Kn [cmds]
Description:		Configures action of break signal
Command	Break from DTE Reliable/Normal mode		Break from DTE Direct mode	Modem receives \B	Break from remote modem
\K0	Enter command mode, do not send break to remote modem.		Send break to remote modem immediately, then enter command mode.	Buffers cleared and break sent to remote modem.	Buffers cleared and break sent to DTE.
\K1	Buffers cleared and break sent to remote modem.		Send break to remote modem immediately.	Buffers cleared and break sent to remote modem.	Buffers cleared and break sent to DTE.
\K2	Enter command mode, do not send break to remote modem.		Send break to remote modem immediately, then enter command mode.	Send break to remote modem immediately.	Send break to DTE immediately.
\K3	Send break to remote modem immediately.		Send break to remote modem immediately.	Send break to remote modem immediately.	Send break to DTE immediately.
\K4	Enter command mode, do not send break to remote modem.		Send break to remote modem immediately, then enter command mode.	Send break to remote modem with transmitted data.	Break sent with received data to the DTE.
\K5	Send break with transmitted data.		Send break to remote modem immediately.	Send break to remote modem with transmitted data.	Break sent with received data to the DTE.

DISPLAY FIRMWARE VERSION
Type:	Immediate
Format:	AT [cmds] -V [cmds]
Description:	Displays the modem's firmware version.

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 feature bitmap.

LOCAL SERIAL PORT SPEED - CURRENT
Type:	Register (read-only)
Format:	AT [cmds] S112? [cmds]
Description:	Returns a value indicating the current speed of the local serial port.
Value	Meaning
0	Serial port speed was set by the speed of the last AT command.
2	Serial port speed is 300bps.
3	Serial port speed is 1200bps.
4	Serial port speed is 2400bps.
5	Serial port speed is 4800bps.
6	Serial port speed is 7200bps.
7	Serial port speed is 9600bps.
8	Serial port speed is 12Kbps.
9	Serial port speed is 14.4Kbps.
10	Serial port speed is 16.8Kbps.
11	Serial port speed is 19.2Kbps.
12	Serial port speed is 38.4Kbps.
13	Serial port speed is 57.6Kbps.
14	Serial port speed is 600bps.

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/SPEED
Type:	Configuration
Format:	AT [cmds] Bn [cmds]
Description:	Selects the communication protocol the modem will use.
Command	Protocol
B0	Modem will use ITU-T V.22 at 1200bps and V.21 at 300bps.
B1	Modem will use Bell 212A at 1200bps and 103A at 300bps.
B2	Modem will use ITU-T V.23 at 1200/75bps.
B3	Modem will use ITU-T V.23 at 75/1200bps.
B15	Modem will use ITU-T V.21 at 300bps.
B16	Modem will use 103A at 300bps.
B30	Modem will use ITU-T V.22bis at 2400bps.
B41	Modem will use ITU-T V.32 at 4800bps.
B52	Modem will use ITU-T V.32bis at 7200bps.
B60	Modem will use ITU-T V.32 at 9600bps.
B70	Modem will use ITU-T V.32bis at 12Kbps.
B75	Modem will use ITU-T V.32bis at 14.4Kbps.

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.