Card Type	Modem, Fax
Chip Set	Unidentified
I/O Options	Microphone in, speaker out, line in, line out, DC power, serial port
Maximum Modem Rate	56Kbps
Maximum Fax Rate	14.4Kbps
Data Modulation Protocol	Bell 103/212A, V.22, V.22bis, V.23, V.32, V.32bis, V.34+, x2
Fax Modulation Protocol	ITU-T V.17, V.21CH2, V.27ter, V.29
Error Correction/Compression	MNP5, V.42bis
Fax Class	Class I & II
Data Bus	External

CONNECTIONS
Function	Label		Function		Label
Line in		CN1		Microphone in		CN5
Line out		CN2		Speaker		CN6
Serial port		CN3		Volume		R1
DC power		CN4		Power switch		SW1

DIAGNOSTIC LED(S)
LED	Color	Status	Condition
ARQ	Unidentified	On	MNP or V.42 connection is established
ARQ	Unidentified	Blinking	Data is re-sent
ARQ	Unidentified	Off	No connection established
AA	Unidentified	On	Auto-answer enabled
AA	Unidentified	Blinking	Phone is ringing
AA	Unidentified	Off	No line activity present
CD	Unidentified	On	Carrier signal detected
CD	Unidentified	Off	Carrier signal not detected
OH	Unidentified	On	Modem has gone off hook
OH	Unidentified	Off	Modem is on hook
RD	Unidentified	On	Data is being sent to the computer through the modem
RD	Unidentified	Off	No data is being sent
SD	Unidentified	On	Modem is receiving data from the computer
SD	Unidentified	Off	Modem is not receiving data from the computer
TR	Unidentified	On	Modem can receive commands
TR	Unidentified	Off	Modem cannot receive commands
MR	Unidentified	On	The modem is turned on
MR	Unidentified	Off	The modem is turned off

SUPPORTED COMMAND SET

Basic AT Commands

AT, ‘+++’, A/

A, B, E, F, H, M, O, P, T, V, X

&C, &G, &T, &W, &Z

S Registers

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

Special Commands

#BDR, #CLS, #CID, #MDL?, #MFR?, #REV?, #TL, #VBQ?, #VBS, #VBT, #VCI?, #VLS, #VRA, #VRN, #VRX,

#VSD, #VSK, #VSP, #VSR, #VSS, #VTD, #VTS, #VTX, +MS, +MS?

Note: See MHI Help File for full command documentation.

ACTIVE/DEFAULT PROFILE CONFIGURATION
Type:	Immediate
Format:	AT [cmds] Zn [cmds]
Description:	Determines which profile the modem should use upon power-up or reset.
Command	Function
Z0	Reset and retrieve the profile set by the ‘Y’ command
Z1	Reset and retrieve active Profile 0
Z2	Reset and retrieve active Profile 1
Z3	Reset and retrieve default Profile 0
Z4	Reset and retrieve default Profile 1
Z5	Reset and retrieve default Profile 2

ANSWER MODE
Type:	Configuration
Format:	AT [cmds] Bn [cmds]
Description:	Configures modem to either answer in U.S. answer mode or V.25 answer mode.
Command	Function
í B0	Sets modem for ITU-T V.25 answer mode
B1	Sets modem for U.S. answer mode

AUTOMATIC REPEAT REQUEST
Type:	Configuration
Format:	AT [cmds] &An [cmds]
Description:	Configures ARQ result codes, V.32, error correction, and compression protocols
Command	Function
&A0	ARQ result codes disabled
&A1	ARQ result codes enabled
&A2	ARQ result codes and V.32 enabled
í &A3	ARQ result codes, V.32, error correction, and data compression enabled

BREAK CONFIGURATION
Type:	Configuration
Format:	AT [cmds] &Yn [cmds]
Description:	Configures Line Break
Command	Function
&Y0	Destructive break / Does not send break
&Y1	Destructive break / Break expedited
&Y2	Non-destructive break / Break expedited

COMMAND SET
Type:	Immediate
Format:	AT [cmds] $ [cmds]
Description:	Displays modem command sets
&$	Displays the ampersand command set

COMMUNICATIONS MODE (ASYNCHRONOUS)
Type:	Configuration
Format:	AT [cmds] &Mn [cmds]
Description:	Selects communications mode
Command	Mode
í &M0	Set to normal mode
&M4	Enable ARQ and normal modes
&M5	Only enables ARQ mode

CONNECTION SPEED
Type:	Configuration
Format:	AT [cmds] &Nn [cmds]
Description:	Configures modem connection speed
Command	Function
&N0	Automode enabled
&N1	Connection speed set to 300bps
&N2	Connection speed set to 1200bps
&N3	Connection speed set to 2400bps
&N4	Connection speed set to 4800bps
&N5	Connection speed set to 7200bps
&N6	Connection speed set to 9600bps
&N7	Connection speed set to 12Kbps
&N8	Connection speed set to 14.4Kbps
&N9	Connection speed set to 16.8Kbps
&N10	Connection speed set to 19.2Kbps
&N11	Connection speed set to 21.6Kbps
&N12	Connection speed set to 24Kbps
&N13	Connection speed set to 26.4Kbps
&N14	Connection speed set to 28.8Kbps
&N15	Connection speed set to 31.2Kbps
&N16	Connection speed set to 33.6Kbps
&N17	Connection speed set to 33.333Kbps
&N18	Connection speed set to 37.333Kbps
&N19	Connection speed set to 41.333Kbps
&N20	Connection speed set to 42.666Kbps
&N21	Connection speed set to 44Kbps
&N22	Connection speed set to 45.333Kbps
&N23	Connection speed set to 46.666Kbps
&N24	Connection speed set to 48Kbps
&N25	Connection speed set to 49.333Kbps
&N26	Connection speed set to 50.666Kbps
&N27	Connection speed set to 52Kbps
&N28	Connection speed set to 53.333Kbps
&N29	Connection speed set to 54.666Kbps
&N30	Connection speed set to 56Kbps
&N31	Connection speed set to 57.333Kbps

DATA COMPRESSION
Type:	Configuration
Format:	AT [cmds] &Kn [cmds]
Description:	Enable/disable Auto Data, V.42bis, and MNP5 compression
Command	Function
&K0	V.42bis and MNP5 compression disabled
í &K1	Auto Data compression enabled
&K2	V.42bis and MNP5 compression enabled
&K3	MNP5 compression disabled

DATA SET READY (DSR)
Type:	Configuration
Format:	AT [cmds] &Sn [cmds]
Description:	Selects DSR options
Command	Function
í &S0	DSR forced high
&S1	DSR is off while in command mode and set on in on-line mode

DATA TERMINAL READY (DTR)
Type:	Configuration
Format:	AT [cmds] &Dn [cmds]
Description:	Selects modem response to DTR
Command	Function
í &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.

DCE CONNECTION SPEED
Type:	Configuration
Format:	AT [cmds] &Un [cmds]
Description:	Configures DCE modem connection speed
Command	Function
&U0	Variable DCE connection speed enabled
&U1	Connection speed set to 300bps
&U2	Connection speed set to 1200bps
&U3	Connection speed set to 2400bps
&U4	Connection speed set to 4800bps
&U5	Connection speed set to 7200bps
&U6	Connection speed set to 9600bps
&U7	Connection speed set to 12Kbps
&U8	Connection speed set to 14.4Kbps
&U9	Connection speed set to 16.8Kbps
&U10	Connection speed set to 19.2Kbps
&U11	Connection speed set to 21.6Kbps
&U12	Connection speed set to 24Kbps
&U13	Connection speed set to 26.4Kbps
&U14	Connection speed set to 28.8Kbps
&U15	Connection speed set to 31.2Kbps
&U16	Connection speed set to 33.6Kbps
&U17	Connection speed set to 33.333Kbps
&U18	Connection speed set to 37.333Kbps
&U19	Connection speed set to 41.333Kbps
&U20	Connection speed set to 42.666Kbps
&U21	Connection speed set to 44Kbps
&U22	Connection speed set to 45.333Kbps
&U23	Connection speed set to 46.666Kbps
&U24	Connection speed set to 48Kbps
&U25	Connection speed set to 49.333Kbps
&U26	Connection speed set to 50.666Kbps
&U27	Connection speed set to 52Kbps
&U28	Connection speed set to 53.333Kbps
&U29	Connection speed set to 54.666Kbps
&U30	Connection speed set to 56Kbps
&U31	Connection speed set to 57.333Kbps

DCE/DTE
Type:	Configuration
Format:	AT [cmds] &Bn [cmds]
Description:	Adjust DCE/DTE rate settings
Command	Function
&B0	DTE follows DCE
í &B1	DTE constant
&B2	DTE constant in ARQ mode and a variable rate in non-ARQ mode

DIAL MODE
Type:	Configuration
Format:	AT [cmds] Dn [cmds]
Description:	Configures the dialing mode the modem will use.
Command	Function
DL	Redials last number
DP	Uses pulse dialing
DS=n	Dial number in stored memory
DR	Reverses the dial mode
í DT	Uses touch-tone dialing
DW	Waits for two dial tones
D,	Pause
D;	Modem returns to &Dmode after dialing
D/	Uses a 125 msec delay before dialing
D!	Uses flash
D@	Set to wait for 5 seconds of line silence
D$	Displays the dialing commands

ECHO COMMANDS
Type:	Configuration
Format:	AT [cmds] En [cmds]
Description:	Configures modem to either echo commands or not to echo commands
Command	Function
E0	Local echo enabled
í E1	Local echo disabled

FACTORY DEFAULT PROFILE
Type:	Configuration
Format:	AT [cmds] &F [cmds]
Description:	Sets values in active profile to values found in the default profile
Command	Function
&F0	Restore default configuration 0
í &F1	Restore default configuration 1 (enables hardware flow control)
&F2	Restore default configuration 2 (enables software flow control)

MODEM RESPONSE
Type:	Configuration
Format:	AT [cmds] Qn [cmds]
Description:	Determines when and how the modem sends reponses
Command	Function
í Q0	Result code sending enabled
Q1	Result code sending disabled
Q2	Displays result codes when modem is set in Originate mode

PROFILE CONFIGURATION
Type:	Immediate
Format:	AT [cmds] Yn [cmds]
Description:	Determines which profile the modem should use upon power-up or reset.
Command	Function
Y0	Set Profile 0 active upon power-up or reset
Y1	Set profile 1 active upon power-up or reset

PULSE DIALING RATIO
Type:	Configuration
Format:	AT [cmds] &Pn [cmds]
Description:	Selects pulse dial make/break ratio
Command	Function
í &P0	39/61ms at 10pps (North America)
&P1	33/67ms at 10pps (Europe and Hong Kong)

REPORT INFORMATION
Type:	Immediate
Format:	AT [cmds] In [cmds]
Description:	Displays information requested
Command	Function
I0	Reports product identification code
I1	Reports ROM checksum
I2	Reports internal memory test
I3	Reports product identification
I4	Reports current modem settings
I5	Reports active and stored profiles
I6	Reports link diagnostics
I7	Reports modem configuration

RTS/CTS
Type:	Configuration
Format:	AT [cmds] &Rn [cmds]
Description:	Selects RTS/CTS options
Command	Function
&R0	Reserved
&R1	CTS forced high, RTS is ignored.
í &R2	RX hardware flow control enabled

RX FLOW CONTROL
Type:	Configuration
Format:	AT [cmds] &In [cmds]
Description:	Configure RX & ENQ/ACK flow control settings (XON/XOFF)
Command	Function
í &I0	Software RX flow control disabled
&I1	Software RX flow control enabled
&I2	RX flow control enabled without passthrough
&I3	ENQ/ACK flow control enabled in host mode
&I4	ENQ/ACK flow control enabled in terminal mode
&I5	Software RX flow control enabled for non-ARQ mode

SPEAKER VOLUME
Type:	Immediate
Format:	AT [cmds] Ln [cmds]
Description:	Controls the volume of the modem speaker
Command	Function
L0	Low volume setting
L1	Low volume setting
í L2	Medium volume setting
L3	High volume setting
Description:	Controls 8S-2D, 16S-4D, 32S-2D, and 64S-4D trellis coding.

TX FLOW CONTROL
Type:	Configuration
Format:	AT [cmds] &Hn [cmds]
Description:	Configure TX flow control settings (XON/XOFF)
Command	Function
&H0	CTS flow control disabled
í &H1	CTS flow control enabled
&H2	Software flow control enabled
&H3	Software flow control and CTS enabled

BIT-MAPPED REGISTER S13
Format:	AT [cmds] S13=n [cmds]
Default:	0
Unit:	Bit-mapped
Description:	Controls RX flow control, buffer reset, backspace, autodial, retrain, and hang-up commands.

BIT-MAPPED REGISTER S27
Format	AT [cmds] S27=n [cmds]
Default:	0
Unit:	Bit-mapped
Description:	Controls V.21, V.23, V.32, V.32bis, trellis coding, answer tone, and 9600bps result codes.

BREAK LENGTH
Format	AT [cmds] S21 [cmds]
Default:	10
Range:	0-255
Unit:	.01 second
Description:	Determines the break length

COMPRESSION CONFIGURATION
Format	AT [cmds] S15 [cmds]
Default:	0
Range:	Unidentified
Unit:	Bit-mapped register
Description:	Disable ARQ/MNP/V.42bis compression

COMPRESSION PROTOCOLS
Type:	Register
Format:	AT [cmds] S32=n [cmds]
Default:	2
Unit:	Bit-mapped register
Description:	Controls V.8, V.34, V.34bis, and x2 compression protocols

DIAL LINE RATE
Type:	Register
Format	AT [cmds] S38=n [cmds]
Default:	0
Range:	0 - 19
Unit:	Unidentified
Description:	Sets the 56K dialing rate

DISTINCTIVE RING
Format	AT [cmds] S41 [cmds]
Default:	0
Range:	0-1
Unit:	Bit-mapped register
Description:	Enables or disables the distinctive ring function on the modem

DTR HANG-UP DELAY
Type:	Register
Format	AT [cmds] S38=n [cmds]
Default:	0
Range:	0-255
Unit:	1 second
Description:	Controls the DTR hang-up delay time

FLOW CONTROL CHARACTER - XON
Format	AT [cmds] S22 [cmds]
Default:	17
Range:	0-255
Unit:	ASCII
Description:	Sets the character used to represent XON

FLOW CONTROL CHARACTER - XOFF
Format	AT [cmds] S23 [cmds]
Default:	19
Range:	0-255
Unit:	ASCII
Description:	Sets the character used to represent XOFF

INACTIVITY TIMER
Format	AT [cmds] S19 [cmds]
Default:	0
Range:	0-255
Unit:	minutes
Description:	Disconnects line connection after a certain period of line inactivity

SYMBOL RATES
Type:	Register
Format:	AT [cmds] S33=n [cmds]
Default:	0
Unit:	Bit-mapped register
Description:	Controls 2400, 2743, 2800, 3000, 3200, and 3429 symbol rates.

TRELLIS CODING
Type:	Register
Format:	AT [cmds] S34=n [cmds]
Default:	0
Unit:	Bit-mapped register

V.21 ANSWER MODE TIMER
Type:	Register
Format	AT [cmds] S29=n [cmds]
Default:	20
Range:	0-255
Unit:	.01 second
Description:	Time the modem will go on-hook upon receiving the ! dial modifier in dial string.

V.32 ANSWER TONE
Format	AT [cmds] S28=n [cmds]
Default:	8
Range:	0-255
Unit:	.1 seconds
Description:	Controls V.32 answer tone