Card Type	Modem, Fax
Chip Set	Unidentified
I/O Options	Serial ports, power jack, line in, line out
Maximum Modem Rate	33.6Kbps
Maximum Fax Rate	14.4Kbps
Data Modulation Protocol	Bell 103A/212A ITU-T V.32bis, V.34
Fax Modulation Protocol	ITU-T V.17
Error Correction/Compression	MNP5, V.42, V.42bis
Fax Class	Unidentified
Data Bus	External

CONNECTIONS
Function	Label		Function		Label
Line in via RJ-11		CN1		Serial port		CN3
Line out via RJ-11		CN2		Power jack		CN4

DIAGNOSTIC LED(S)
LED	Color	Status	Condition
TD	Unidentified	Blinking	Modem transmitting data
TD	Unidentified	Off	Modem not transmitting data
RD	Unidentified	Blinking	Modem is receiving data
RD	Unidentified	Off	Modem is not receiving data
CD	Unidentified	On	Carrier signal detected
CD	Unidentified	Off	Carrier signal not detected
V.34	Unidentified	On	Modem connected in V.34 mode at 33.6Kbps
V.34	Unidentified	Off	Modem is not connected in V.34 mode at 33.6Kbps
V.32bis	Unidentified	On	Modem connected in V.32bis mode or less
V.32bis	Unidentified	Off	Modem is not connected in V.32bis mode
9.6	Unidentified	On	Modem is connected at 9.6Kbps
9.6	Unidentified	Off	Modem is not connected at 9.6Kbps
OH	Unidentified	On	Modem is on-hook
OH	Unidentified	Off	Modem is off-hook
TR	Unidentified	On	DTR signal is high
TR	Unidentified	Off	DTR signal is low
EC	Unidentified	On	Modem is set for V.42 error compression
EC	Unidentified	Off	Modem is not set for V.42 error compression
EC	Unidentified	Blinking	Data compression enabled
FAX	Unidentified	On	Modem is in Fax mode
FAX	Unidentified	Off	Modem is not in Fax mode

SUPPORTED COMMAND SET

Basic AT Commands

AT, A/

A, B, E, F, H, M, O, Q, S, V, Y, Z

&C, &F, &G, &V, &Z

Extended AT Commands

\V

S Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S10, S11, S30

Note: See MHI Help File for full command documentation.

TRANSMIT CARRIER
Type:	Configuration
Format:	AT [cmds] Cn [cmds]
Description:	Controls the transmit carrier switching
Command	Function
C1	Transmit carrier enabled

DIAL
Type:	Immediate
Format:	AT [cmds] D<#> [cmds]
Description:	Dials telephone number 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
DS=n	Dial stored telephone number n
DT	Tone dialing enabled/Pulse dialing disabled
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;	Modem returned to idle state after dialing. The semicolon can only be placed at the end of the dial command.
D$	Calling card "Bong" detection enabled
DV	Switch to speakerphone
D^	Data calling tone transmission disabled

REPORT INFORMATION
Type:	Immediate
Format:	AT [cmds] In [cmds]
Description:	Displays information requested
Command	Function
I0	Reports default speed and controller firmware code
I1	Reports ROM checksum
I2	Tests and reports ROM checksum
I3	Reports default speed and controller firmware code
I4	Reports data pump model and revision code

SPEAKER VOLUME
Type:	Configuration
Format:	AT [cmds] Ln [cmds]
Description:	Controls speaker volume
Command	Function
L0	Low volume setting
L1	Low volume setting
L2	Medium volume setting
L3	Highest volume setting

AUTO-MODE DETECTION
Type:	Configuration
Format:	AT [cmds] Nn [cmds]
Description:	Selects various options for the automatic detection and negotiation of protocols during the handshake process if the modem is communicating with a remote modem of dissimilar speed.
Command	Function
N0	In originate mode, handshake begins at line speed designated by the S37 register and the B command
N1	In originate mode, handshake begins at line speed designated by the S37 register. and the B command Modem can shift to a slower speed if necessary.

SELECT CALL PROGRESS RESULT CODES
Type:	Configuration
Format:	AT [cmds] Xn [cmds]
Description:	Enables selection of tone detection and associated result code format options
Command	Function
X0	Busy and dial tone detection disabled; basic result codes enabled.
X1	Busy and dial tone detection disabled; extended result codes enabled.
X2	Busy tone detection disabled, dial tone detection enabled; extended result codes enabled.
X3	Busy tone detection enabled, dial tone detection disabled; extended result codes enabled.
X4	Busy and dial tone detection disabled; extended result codes enabled.

DATA TERMINAL READY (DTR)
Type:	Configuration
Format:	AT [cmds] &Dn [cmds]
Description:	Selects modem response to DTR
Command	Function
&D0	Modem does not respond to DTR
&D1	Modem goes to command mode after DTR goes is off
&D2	Modem goes to command mode and disconnects (hangs up) after DTR goes off; Auto-Answer is disabled.
&D3	Modem is initialized after DTR goes off

AUXILLARY RELAY CONTROL
Type:	Configuration
Format:	AT [cmds] &J [cmds]
Description:	Controls auxiliary relay
Command	Function
&J0	Auxiliary relay remains open
&J1	Not supported

FLOW CONTROL
Type:	Configuration
Format:	AT [cmds] &Kn [cmds]
Description:	Enables flow control options
Command	Function
&K0	Flow control disabled
&K3	RTS to CTS flow control enabled
&K4	XON/XOFF flow control enabled

COMMUNICATIONS MODE
Type:	Configuration
Format:	AT [cmds] &Mn [cmds]
Description:	Selects communications mode
Command	Mode
&M0	Asynchronous mode

COMMUNICATIONS MODE
Type:	Configuration
Format:	AT [cmds] &Qn [cmds]
Description:	Selects communications mode options
Command	Mode
&Q0	Asynchronous mode, serial port speed follows connect speed.
&Q5	Error correction mode
&Q6	Buffered asynchronous mode

DATA SET READY (DSR)
Type:	Configuration
Format:	AT [cmds] &Sn [cmds]
Description:	Selects DSR options
Command	Function
&S0	DSR forced high
&S1	DSR high only while modem is connected

TEST MODES
Type:	Immediate
Format:	AT [cmds] &Tn
Description:	Selects test options
Command	Function
&T0	End current test
&T1	Begin local analog loopback test
&T3	Begin local digital loopback
&T6	Request remote digital loopback

STORE ACTIVE PROFILE
Type:	Configuration
Format:	AT [cmds] &Wn [cmds]
Description:	Writes the values for the active profile into the non-volatile RAM
Command	Function
&W0	Write the active profile to NVRAM

RESTORE PROFILE ON POWER-UP
Type:	Configuration
Format:	AT [cmds] &Yn [cmds]
Description:	Restores a selected profile into the active profile on power-up (hard reset)
Command	Function
&Y0	Restore profile 0 on power-up

BREAK TYPE
Type:		Configuration
Format:		AT [cmds] \Kn [cmds]
Description:		Configures action of break signal
Command	Break from DTE		Modem receives \B	Break received from remote modem
\K5	Send break with transmitted data		Send break with transmitted data	Break sent with received data to the DTE

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
\N3	V.42/MNP auto-reliable mode enabled
\N4	V.42 reliable mode enabled
\N5	V.42, MNP, or normal mode

COMPRESSION
Type:	Configuration
Format:	AT [cmds] %Cn [cmds]
Description:	Selects data compression
Command	Function
%C0	Data compression disabled
%C1	V.42bis/MNP5 enabled

DTR DIALING
Type:	Configuration
Format:	AT [cmds] $Dn [cmds]
Description:	Enables/disables DTR dialing
Command	Function
$D0	DTR dialing disabled
$D1	DTR dialing enabled

MODEM BAUD RATE
Type:	Configuration
Format:	AT [cmds] $MBn [cmds]
Description:	Selects modem baud rate
Command	Function
$MB75	CCITT V.23 mode
$MB300	300bps
$MB1200	1200bps
$MB2400	2400bps
$MB4800	4800bps
$MB9600	9600bps
$MB14400	14.4Kbps
$MB19200	19.2Kbps
$MB28800	28.8Kbps
$MB33600	33.6Kbps

SERIAL PORT BAUD RATE
Type:	Configuration
Format:	AT [cmds] $SBn [cmds]
Description:	Selects serial port baud rate
Command	Function
$SB300	300bps
$SB1200	1200bps
$SB2400	2400bps
$SB4800	4800bps
$SB9600	9600bps
$SB19200	19.2Kbps
$SB38400	38.4Kbps
$SB57600	57.6Kbps
$SB115200	115.2Kbps

ESCAPE CHARACTER
Type:	Register
Format	AT [cmds] S9=n [cmds]
Range:	1-127
Unit:	ASCII
Description:	Defines remote configuration escape character.

V.34 MODULATION
Type:	Register
Format	AT [cmds] S28=n [cmds]
Range:	0-255
Unit:	Decimal
Description:	Enables V.34 modulation
Note: S28=0 disables V.34 modulation.

V.25 CALLING TONE
Type:	Register
Format	AT [cmds] S35=n [cmds]
Range:	0-1
Unit:	Decimal
Description:	Enables V.25 data calling tone, which allows remote data/fax/voice discrimination
Note: S35=0 disables V.25 data calling tone.

ERROR CORRECTION NEGOTIATION
Type:		Register
Format		AT [cmds] S36=n [cmds]
Description:		Selects the action of the modem if it fails to connect when error control is selected.
Command	S48=7		S48=128
S36=0	LAPM or hang-up		Not used
S36=1	LAPM or Asynchronous		Asynchronous
S36=2	LAPM or hang-up		Not used
S36=3	LAPM or Asynchronous		Asynchronous
S36=4	LAPM, MNP, or hang-up		MNP or hang-up
S36=5	LAPM, MNP, or Asynchronous		MNP or Asynchronous
S36=6	LAPM, MNP, or hang-up		MNP or hang-up
S36=7	LAPM, MNP, or Asynchronous		MNP or Asynchronous

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
S37=0	Maximum speed
S37=1	Reserved
S37=2	1200/75bps
S37=3	300bps
S37=4	Reserved
S37=5	1200bps
S37=6	2400bps
S37=7	4800bps
S37=8	7200bps
S37=9	9600bps
S37=10	12.0Kbps
S37=11	14.4Kbps
S37=12	16.8Kbps
S37=13	19.2Kbps
S37=14	21.6Kbps
S37=15	24.0Kbps
S37=16	26.4Kbps
S37=17	28.8Kbps
S37=18	31.2Kbps
S37=19	33.6Kbps

V32bis, V.22bis AUTO RATE
Type:	Register
Format	AT [cmds] S42=n [cmds]
Range:	0-1
Unit:	Decimal
Description:	Enables V.32bis and V.22bis auto rate
Note: S42=0 disables V.32bis and V.22bis auto rate. For testing purposes only.

V32bis STARTUP MODE
Type:	Register
Format	AT [cmds] S43=n [cmds]
Range:	0-1
Unit:	Decimal
Description:	Enables V.32bis start-up auto mode operation
Note: S43=0 disables V.32bis start-up auto mode. For testing purposes only.

FEATURE NEGOTIATION
Type:		Register
Format:	AT [cmds] S48=n [cmds]
Range:		7, 128
Description:	Selects active error correction and compression protocols. See S36, error correction negotiation table

INACTIVITY TIMER
Type:	Register
Format:	AT [cmds] S89=n [cmds]
Range:	0, 5-255
Unit:	1 second
Description:	Sets the length of time that the modem does not receive information before it disconnects; S89=0 will disable.