Card Type	Modem
Chip Set	Unidentified
I/O Options	25-pin serial port, power, line in, line out
Maximum Modem Rate	56Kbps
Maximum Fax Rate	14.4Kbps
Data Modulation Protocol	Bell 103/212A ITU-T V.21, V.22, V.22bis, V.23, 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	I & II
Data Bus	External

CONNECTIONS
Function	Label	Function	Label
Power connector	CN1	Line out (RJ-11)	CN3
25-pin serial port	CN2	Line in (RJ-45 connector)	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
56	Unidentified	On	Modem connected in K56flex mode
56	Unidentified	Off	Modem is not connected in K56flex mode
28	Unidentified	On	Modem connected in V.34 mode
28	Unidentified	Off	Modem is not connected in V.34 mode
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, Q, V, W, X, Y, Z

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

Extended AT Commands

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

%C, %E, %L, %Q

Special Commands

-K, #CID

S Registers

S0, S1, S2, S3, S4, S6, S7, S8, S9, S10, S11, S12, S18, S21, S24, S25, S29, S30, S32, S33,

S38, S91, S92, S95

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
í &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
Command	Function
&D0	DTR ignored
&D1	DTR drop causes online command mode
í &D2	DTR drop causes modem to go on-hook
&D3	Resets on low DTR

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.
DV	Switch to speakerphone
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

JACK TYPE
Type:	Configuration
Format:	AT [cmds] &Jn [cmds]
Description:	Command non-functional; for compatibility only

LINE TYPE
Type:	Configuration
Format:	AT [cmds] &Ln [cmds]
Description:	Command non-functional; for compatibility only

REPORT INFORMATION
Type:	Immediate
Format:	AT [cmds] In [cmds]
Description:	Displays information requested
Command	Function
I0	Reports product code
I1	Reports ROM checksum
I2	Tests and reports ROM checksum
I3	Reports firmware version and application codes
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

BLACKLIST
Type:	Immidiate
Format:	AT [cmds] *B [cmds]
Description:	Displays blacklisted numbers. If no numbers are blacklisted, returns OK.

DELAY
Type:	Immidiate
Format:	AT [cmds] *D [cmds]
Description:	Displays delayed numbers with the delay associated with each. If no numbers are delayed, returns OK.

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

FLASH MEMORY
Type:	Configuration
Format:	AT [cmds] **n [cmds]
Description:	Controls download to flash memory
Command	Function
**0	Downloads last sensed speed into flash memory
**1	Downloads 38.4Kbps into flash memory
**2	Downloads 57.6Kbps into flash memory

MNP10 - FALLBACK
Type:	Configuration
Format:	AT [cmds] -Qn [cmds]
Description:	Command non-functional; for compatibility only

MNP10 - LINK NEGOTIATION
Type:	Configuration
Format:	AT [cmds] *Hn [cmds]
Description:	Command non-functional; for compatibility only

MNP10 - POWER LEVEL ADJUST
Type:	Configuration
Format:	AT [cmds] )Mn [cmds]
Description:	Command non-functional; for compatibility only

MNP10 - POWER LEVEL ADJUST
Type:	Configuration
Format:	AT [cmds] -SEC=n [cmds]
Range:	0-30
Unit:	-1dBm
Description:	Controls automatic transmit power level adjustment during MNP 10 link negotiation
Command	Function
-SEC=0	MNP10 disabled. Transmission level is set in the S91 register
-SEC=1, [tx_lev]	MNP10 enabled. Set transmit level

MODULATION SELECTION
Type:	Configuration
Format:	AT [cmds] +MS=x [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
x=56	K56flex
x=64	Bell 103
x=69	Bell 212A

PLUG & PLAY SERIAL NUMBER
Type:	Immediate
Format:	AT [cmds] %7n [cmds]
Range:	8
Unit:	Hexidecimal
Description:	Sets and stores numbers for serial plug & play

PLUG & PLAY VENDOR ID & PRODUCT NUMBER
Type:	Immediate
Format:	AT [cmds] %8n [cmds]
Range:	3 (ASCII), 4 (hex)
Unit:	ASCII, Hexidecimal
Description:	Sets and stores numbers for serial plug & play

TRANSMISSION LEVEL - CELLULAR
Type:	Configuration
Format:	AT [cmds] @Mn [cmds]
Range:	0-30
Unit:	-1dBm
Description:	Command non-functional; for compatibility only

V.32 - COMPROMISE EQUALIZER
Type:	Configuration
Format:	AT [cmds] :En [cmds]
Description:	Command non-functional; for compatibility only

BACKSPACE CHARACTER
Type:	Register
Format	AT [cmds] S5=n [cmds]
Range:	0-127
Unit:	ASCII
Description:	Selects a character used for backspace <BS>
Note: A value greater than 32 will disable backspace

BIT-MAPPED REGISTER S14
Format:		AT [cmds] S14=n [cmds]
Range:		0-174
Unit:		Bit-mapped
Description:		Controls echo, result codes and display, dial mode, and answer/originate mode.
Bit	Value	Function
0	0	Not used
1	0 1	Command echo disabled Command echo enabled
2	0 1	Result codes enabled Result codes disabled
3	0 1	Display result codes in numeric format Display result codes in verbose format
4	0	Not used
5	0 1	Tone dial enabled Pulse dial enabled
6	0	Not used
7	0 1	Answer mode enabled Originate mode enabled

BIT-MAPPED REGISTER S22
Format		AT [cmds] S22=n [cmds]
Range:		0-255
Unit:		Bit-mapped
Description:		Controls speaker volume and controls, limits results codes, and pulse dial make/break ratio.
Bit	Value	Function
1, 0	00 01 10 11	Off volume Low level volume Medium level volume High level volume
3, 2	00 01 10 11	Speaker off Speaker off on carrier Speaker always on Speaker on during handshake
6 - 4	000 100 101 110 111	Basic result codes only enabled Basic and connection speed result codes enabled Basic and connection speed result codes and dialtone detection enabled All result codes except dialtone detection enabled All result codes enabled
7	0	Not used

BIT-MAPPED REGISTER S23
Format		AT [cmds] S23=n [cmds]
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 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 Sets serial port speed to 19.2Kbps Sets serial port speed to 38.4Kbps or higher
5, 4	00 01 10 í 11	Parity even Space Parity Parity odd Mark or No Parity
7, 6	í 00 01 10	Guard tone disabled Guard tone 550Hz enabled Guard tone 1800Hz enabled

BIT-MAPPED REGISTER S27
Format		AT [cmds] S27=n [cmds]
Range:		0-111
Unit:		Bit-mapped
Description:		Selects synchronous/asynchronous mode, line type, clock source, and ITU-T/Bell modes.
Bit	Value	Function
3, 1, 0	00 01 10 11	Asynchronous mode, serial port speed follows connect speed Asynchronous off-line command mode and synchronous connect mode Asynchronous off-line command mode; modem autodials first number in directory, then synchronous connect mode Asynchronous off-line command mode on low DTR, synchronous connect mode on high DTR
2	0 1	Switched line Leased line
5, 4	00 01 10	Local modem generates transmit clock source Local DTE generates transmit clock source Remote DCE/DTE generates transmit clock source
6	0 1	ITU/T mode Bell mode
7	0	Not Used

BIT-MAPPED REGISTER S28
Format		AT [cmds] S28=n [cmds]
Range:		0-31
Unit:		Bit-mapped
Description:		Controls pulse dialing.
Bit	Value	Function
4, 3	00 01 10 11	39ms make/61ms break at 10pps 33ms make/67ms break at 10pps 39ms make/61ms break at 20pps 33ms make/67ms break at 20pps

BIT-MAPPED REGISTER S31
Format:		AT [cmds] S31=n [cmds]
Range:		0-10
Description:		Select automode, extended result code format and caller ID functions
Bit	Value		Function
0	0		Not used
1	0 í 1		Auto-mode detection disabled Auto-mode detection enabled
3, 2	00 01 10		Enables CONNECT result codes to report DTE speed Full reporting of CONNECT result codes Enables CONNECT result codes to report DCE speed
5, 4	í 0 1 2		Caller ID disabled Short formatted Caller ID enabled Long unformatted Caller ID enabled

BIT-MAPPED REGISTER S40
Format		AT [cmds] S40=n [cmds]
Range:		0-255
Unit:		Bit-mapped
Description:		Controls power level and break handling; selects MNP extended services, link negotiation, and block size.
Bit	Value	Function
1, 0	í 0 1	MNP Extended Services disabled MNP Extended Services enabled
2	0	Not used
5, 4, 3	000 001 010 011 100 í 101	AT\K0 AT\K1 AT\K2 AT\K3 AT\K4 AT\K5
7, 6	00 í 01 10 11	MNP block size is 64 characters MNP block size is 128 characters MNP block size is 192 characters MNP block size is 256 characters

BIT-MAPPED REGISTER S41
Format		AT [cmds] S41=n [cmds]
Range:		Unidentified
Unit:		Bit-mapped
Description:		Selects compression, auto-retrain, and MNP mode.
Bit	Value	Function
1 - 0	00 01 10 í 11	Data compression disabled MNP5 enabled V.42bis enabled MNP5 and V.42bis enabled
2	0 1	Auto-retrain, fallback/fall-forward disabled Auto-retrain, fallback/fall-forward enabled
3-5	0	Not Used
6	0 í 1	Auto-retrain enabled Auto-fallback/fall-forward enabled
7	0	Not Used

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

FLOW CONTROL
Type:	Register
Format	AT [cmds] S39? [cmds]
Description:	Displays the current flow control
Value	Meaning
0	Flow control disabled
í 3	RTS/CTS flow control enabled
4	XON/XOFF flow control enabled
5	Transparent XON/XOFF flow control enabled
6	Both RTS/CTS & XON/XOFF flow control enabled

TEST MODES
Type:		Register
Format:		AT [cmds] S16=n [cmds]
Range:		0-125
Unit:		Bit-mapped
Description:		Controls loopback tests, analog, digital, remote digital, and self tests.
Bit	Value	Function
0	0 1	Local analog loopback not in progress Local analog loopback in progress
1	0	Not used
2	0 1	Local digital loopback not in progress Local digital loopback in progress
3	0 1	Modem not in remote digital loopback Remote digital loopback in progress
4	0 1	Remote digital loopback not requested Remote digital loopback requested
5	0 1	Remote digital loopback w/ self-test not in progress Remote digital loopback w/ self-test in progress
6-7	0	Not used