Card Type	Modem
Chip Set	Unidentified
I/O Options	25-pin serial port, power, line in, line out, microphone in, speaker jack
Maximum Modem Rate	56Kbps
Maximum Fax Rate	14.4Kbps
Data Modulation Protocol	Bell 103/212A ITU-T V.22, V.22bis, V.32ter, V.32bis, V.34, K56flex
Fax Modulation Protocol	ITU-T V.17, V.27ter, V.29
Error Correction/Compression	MNP5, V.42, V.42bis
Fax Class	Unidentified
Data Bus	External

CONNECTIONS
Function	Label		Function		Label
Line in (RJ-11)		CN1		Microphone in		CN5
Line out (RJ-11)		CN2		Speaker jack		CN6
25-pin serial port		CN3		Power switch		SW1
Power jack		CN4

USER CONFIGURABLE SETTINGS
Function	Label	Position
í Stereo speaker mode enabled	J10	Closed
Mono speaker mode enabled	J10	Open

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
56	Unidentified	On	Modem connected in K56flex or V.PCM mode
56	Unidentified	Off	Modem is not connected in K56flex or V.PCM mode
33	Unidentified	On	Modem connected in V.34 mode at speeds up to 33.6Kbps
33	Unidentified	Off	Modem is not connected in V.34 mode at speeds up to 33.6Kbps
14	Unidentified	On	Modem connected in V.32bis mode at 14.4Kbps
14	Unidentified	Off	Modem is not connected in V.32bis mode at 14.4Kbps
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
FX	Unidentified	On	Modem is in Fax mode
FX	Unidentified	Off	Modem is not in Fax mode

SUPPORTED COMMAND SET

Basic AT Commands

AT, ‘+++’, A/

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

&C, &F, &G, &T, &W, &Y, &Z

Extended AT Commands

\A, \B, \J, \K, \N, \V

%C, %E, %L, %Q

Special Commands

-K, #CID

S Registers

S0, S1, S2, S3, S4, S5, S6 S7, S8, S9, S10, S11, S12, S18, S24, S25, S29, S32, S33, S38

Voice Commands

#CLS, #MDL?, #MFR?, #REV?

Note: See MHI Help File for full command documentation.

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	Auto-mode detection disabled. Handshake begins at line speed designated by the S37 register. If S37=0 handshake follows interface speed
í N1	Auto-mode detection enabled. Handshake begins at line speed designated by the S37 register. If S37=0 handshake at highest possible speed with fallback to lower speed if necessary

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.
í &Q5	Error correction mode
&Q6	Buffered asynchronous mode

CONFIGURATION PROFILES & CALL STATISTICS
Type:	Immediate
Format:	AT [cmds] &V [cmds]
Description:	Displays active and stored configuration profiles & statistics for last connection
Command	Function
&V0	Displays the active configuration, the two stored user profiles, and the first four phone numbers
&V1	Displays statistics for last connection

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

DATA TERMINAL READY (DTR)
Type:	Configuration
Format:	AT [cmds] &Dn [cmds]
Description:	Selects modem response to DTR
Note: The action each variant of &D causes depends on the setting of &Q
&Q Setting		&D0	&D1	&D2	&D3
&Q0, &Q5, &Q6		Command 0	Command 1	Command 2	Command 4
&Q1, &Q4		Command 3	Command 1	Command 2	Command 2
&Q2, &Q3		Command 2	Command 2	Command 2	Command 2
Command	Function
Command 0	Modem does not respond to DTR
Command 1	Modem goes to command mode after DTR goes is off
Command 2	Modem goes to command mode and disconnects (hangs up) after DTR goes off; Auto-Answer is disabled.
Command 3	Modem goes to command mode and disconnects (hangs up) after DTR goes off; Auto-Answer is not disabled
Command 4	Modem is initialized after DTR goes off

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
D^	Data calling tone transmission 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	Load factory configuration 0
&F1	Load factory configuration 1

FLOW CONTROL
Type:	Configuration
Format:	AT [cmds] &Kn [cmds]
Description:	Enables flow control options
Command	Function
&K0	Flow control disabled
&K3	RTS/CTS flow control enabled
&K4	XON/XOFF flow control enabled
&K5	Transparent XON/XOFF flow control enabled
&K6	Both RTS/CTS & XON/XOFF flow control enabled

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

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 OEM identifier string in either binary or ASCII format
I5	Reports country code
I6	Reports data pump model and internal code
I7	Reports country 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

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

FLOW CONTROL
Type:	Configuration
Format:	AT [cmds] \Gn [cmds]
Description:	Command nonfunctional; for compatibility purposes only
Command	Function
\G0	Returns OK for backward compatibility

PCM CODE SELECTION
Type:	Configuration
Format:	AT [cmds] %Un [cmds]
Description:	Determines the PCM code type for 56K modulation
Command	Function
í %U0	m -law encoding enabled (North America & Japan)
%U1	A -law encoding enabled (Europe)

DISTINCTIVE RING
Type:	Immediate
Format:	AT [cmds] -SDR=n [cmds]
Description:	Selects the distinctive ring settings
Command	Function
-SDR=0	Distinctive ring disabled
-SDR=1	Type 1 enabled
-SDR=2	Type 2 enabled
-SDR=3	Type 1 and 2 enabled
-SDR=4	Type 3 enabled
-SDR=5	Type 1 and 3 enabled
-SDR=6	Type 2 and 3 enabled
-SDR=7	Type 1, 2, and 3 enabled

MODULATION SELECTION
Type:	Configuration
Format:	AT [cmds] +MS=x,y,z,a [cmds]
Description:	Sets options for active protocol; the transfer rates specified by z and a must be valid for the protocol selected. +MS? queries setting
Command	Function
x=0	V.21
x=1	V.22
x=2	V.22bis
x=3	V.23
x=9	V.32
x=10	V.32bis
x=11	V.34
í x=12	V.90, fallback to K56flex. .V.34 . .V.32bis, etc..
x=13	K56flex, fallback to V.90. .V.34. .V.32bis, etc..
x=64	Bell 103
x=69	Bell 212A

DATA/DSVD MODE
Type:	Configuration
Format:	AT [cmds] -SMS=n [cmds]
Description:	Selects data or DSVD mode
Command	Function
í -SMS=0	Data mode
-SMS=1	DSVD mode
-SMS=3	Automatic mode selection

DSVD MODE
Type:	Configuration
Format:	AT [cmds] -SSE=n [cmds]
Description:	Select whether the modem will use DSVD mode.
Command	Function
í -SSE=0	DSVD mode disabled.
-SSE=1	DSVD mode enabled.

VOICE DEVICE
Type:	Configuration
Format:	AT [cmds] #VLS=n [cmds]
Description:	Selects the I/O device for the DSP chip.
Command	Function
í #VLS=5	Headset used for voice I/O.
#VLS=6	Speakerphone used for voice I/O.

VOICE - LOCAL SERIAL PORT SPEED
Type:	Configuration
Format:	AT [cmds] #BDR=n [cmds]
Range:	0-48
Unit:	2400bps
Description:	Sets the speed of the local serial port when in voice mode.

CONNECTION FAILURE CODES
Type:	Register
Format	AT [cmds] S86? [cmds]
Description:	Reports codes which correspond to the possible causes of a connection failure
Value	Meaning
0	Normal hang up
4	Carrier signal lost
5	No error-control detected for remote modem during feature negotiation
9	No common protocol found
12	No failure - remote modem disconnected normally
13	Remote modem failed to respond after 10 re-transmissions same message
14	Violation of negotiated protocol caused failure

DCE LINE SPEED
Type:	Register
Format	AT [cmds] S37=n [cmds]
Description:	Sets the maximum allowable data exchange rate attempted during handshake process. For compatibility only, use +MS to set line speed

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

ERROR CORRECTION/COMPRESSION
Type:			Register
Format:	AT [cmds] S46=n [cmds]
Description:	Selects active error correction and compression protocols
Command		Function
S46=136		Error correction only, no compression
S46=138		Error correction with V.42bis data compression

FEATURE NEGOTIATION
Type:			Register
Format:	AT [cmds] S48=n [cmds]
Description:	Selects active error correction and compression protocols. See S36, error correction negotiation table
Command		Function
S48=0		Detection negotiation disabled
S48=7		Detection negotiation enabled
S48=128		Fall-back to options set in S36

INACTIVITY TIMER
Type:	Register
Format	AT [cmds] S30=n [cmds]
Range:	0-255
Unit:	10 ms
Description:	Maximum duration of DTE and DCE inactivity allowed prior to initiating hang-up process.
Note: S30=0 disables the timer and allows indefinite inactivity.

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.