Card Type	Modem/Fax card
Chip Set	Cirrus Logic
Maximum Modem Rate	56Kbps
Maximum Fax Rate	14.4Kbps
Data Modulation Protocol	Bell 103A/212A ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.34, V.80, X2
Fax Modulation Protocol	ITU-T V.17, V.27ter, V.29, T.4, T.30
Error Correction/Compression	MNP5, V.42, V.42bis
Fax Class	Class I
Data Bus	PCMCIA

SUPPORTED COMMAND SET

Basic AT Commands

AT, ‘+++’, ‘comma’, A/

A, C, E, F, H, M, O, P, Q, T, V, X, Y, Z

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

Extended AT Commands

\A, \B, \C \G, \J, \K, \O, \U, \X, \Y, \Z

Special Commands

+MS, -J, "H

S Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S14, S16, S18, S22, S25, S30

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	In originate or answer mode, handshake occurs only in mode designated by the ATB command and S37 register.
í N1	In originate or answer mode, handshake begins at line speed designated by the S37 register and ATB command. Modem may shift to a lower speed

AUXILIARY RELAY CONTROL
Type:	Configuration
Format:	AT [cmds] &Jn [cmds]
Description:	Enables/disables A/A1 relay driver. Not for use with RJ-11 phone lines
Command	Jack Type
í &J0	Auxiliary relay is disabled
&J1	Auxiliary relay is enabled when modem is off-hook

COMMUNICATION PROTOCOLS
Type:	Configuration
Format:	AT [cmds] Bn [cmds]
Description:	Selects the communication protocol for data calls
Note: The B command allows the simultaneous selection of more than one suffix, enabling multiple protocols.
Command	Protocol
B0	ITU-T V.22 at 1200bps
í B1	Bell 212A at 1200bps/ Bell 103J at 300bps
B2	ITU-T V.23 at 75/1200bps originate; 1200/75bps answer
B3	ITU-T V.23 at 1200/75bps answer; 75/1200bps originate

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
Command	Mode
&Q0	Asynchronous mode

CONFIGURATION PROFILES
Type:	Immediate
Format:	AT [cmds] &V [cmds]
Description:	Displays active and stored configuration profiles
Command	Function
í&V0	View stored profile 0
&V1	View stored profile 1
&V2	View relay, general purpose input/output status

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 handshaking or connected

DATA TERMINAL READY (DTR)
Type:	Configuration
Format:	AT [cmds] &Dn [cmds]
Description:	Selects modem response to DTR
Command	Function
&D0	DTR override
&D1	DTR toggle causes online command mode
í &D2	Normal DTR operations
&D3	Resets on receipt of 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
DP	Pulse dialing enabled
DR	Answer mode enabled; originate mode disabled following handshake initiation.
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 Quite 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.

EXTENDED RESULT CODES
Type:	Configuration
Format:	AT [cmds] Wn [cmds]
Description:	Enables selection of additional result codes
Command	Function
W0	Enables CONNECT result codes to report DTE speed
W1	Enables CONNECT result codes to report DTE speed
W2	Enables CONNECT result codes to report DCE speed
W3	Enables CONNECT result codes to report DTE speed, modulation mode, error correction, data compression, DCE transmit/receive when in V1 (text) response mode. Defaults to W0 in V0 (numeric) mode
W4	Enables CONNECT result codes to report DTE protocol, error correction, and speed when in V1 (text) response mode. Defaults to W0 in V0 (numeric) mode

FLOW CONTROL
Type:	Configuration
Format:	AT [cmds] &Kn [cmds]
Description:	Enables flow control options
Command	Function
&K0	Flow control disabled
&K3	RTS/CTS hardware flow control enabled
&K4	XON/XOFF software 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)
&P1	33/67ms at 10pps (Europe)

REPORT INFORMATION
Type:		Immediate
Format:		AT [cmds] In [cmds]
Description:		Displays information requested
Command		Function
I0		Reports product code
I1		Reports modem chip firmware version number
I2		Tests and reports ROM checksum
I3		Reports chipset name
I4		Reserved
I5		Reports host memory (HOST 1/F), program memory (P Mem), data memory (D Mem) and DSP code location hardware configurations
I6		Reports country code
I7		Reports manufacturer firmware version number
I8		Reports modem firmware features (see bits below)
Bit	Value	Function
0	0 1	Voice view disabled Voice view supported
1	0 1	DVD disabled DVD enabled
2-7	0	Reserved
I9		Reserved

REPORT INFORMATION (CONT.)
Type:		Immediate
Format:		AT [cmds] In [cmds]
Description:		Displays information requested
I10		Reports modem board configuration (bits below set by manufacturer)
Bit	Value	Function
0-2	000 100	Telephone emulation mode CL-MD56XX digital speakerphone (+VSP=n)
3	0 1	No caller ID Caller ID hardware on board
4	0 1	Reserved Reserved
5	0 1	Plug and play disabled Plug and play enabled
6	0 1	Microcontroller firmware in EPROM Microcontroller firmware in FLASH
7	0	Reserved
I11		Reports modem board configuration (bits below set by manufacturer)
0	0 1	Modem only board Modem and sound card board
1	0 1	No microphone jack Microphone jack on board
2	0 1	No external speaker External speaker on board
3	0 1	No local telephone off-hook detection on board Local telephone off-hook detection on-board
4	0 1	No local telephone off-hook detection on board Local telephone off-hook detection on-board
5-7	0	Reserved
I12		Reserved
I13		Reserved
I14		Reports SAFE device
I20		Reports Cirrus Logic silicon version
I21		Reports Cirrus Logic firmware version
I22		Reports Cirrus Logic manufacturer name
I23		Reports Cirrus Logic product model
I24		Reserved
I25		Reserved

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

TEST MODES
Type:	Immediate
Format:	AT [cmds] &Tn
Description:	Selects test options
Command	Function
í &T0	End current test
&T1	Begin local analog loopback test
&T4	Grant remote digital loopback request
&T5	Deny remote digital loopback request
&T6	Request remote digital loopback
&T7	Request remote digital loopback and self-test
&T8	Begin local analog loopback and self-test

TRELLIS CODING
Type:	Configuration
Format:	AT [cmds] &Un [cmds]
Description:	Enables/disables trellis coding
Command	Function
í&U0	V.32 trellis coding enabled
&U1	V.32 trellis coding disabled

AUTO-RETRAIN - AUTO-FALLBACK/FALL-FORWARD
Type:	Configuration
Format:	AT [cmds] %En [cmds]
Description:	Controls auto-retrain mode and fallback/fall-forward
Command	Function
%E0	Auto-retrain disabled
%E1	Auto-retrain enabled

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

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	Normal mode enabled
\N2	Reliable mode enabled
í \N3	Auto-reliable mode enabled
\N4	V.42 reliable mode enabled

FLOW CONTROL TYPE
Type:	Configuration
Format:	AT [cmds] \Qn [cmds]
Description:	Sets type of flow control used by modem
Command	Function
\Q0	Flow control disabled
\Q1	Bi-directional XON/XOFF flow control enabled
\Q2	CTS flow control by DCE enabled
í \Q3	Bi-directional RTS/CTS flow control enabled

INACTIVITY TIMER
Type:	Configuration
Format:	AT [cmds] \Tn [cmds]
Range:	0-90
Unit:	1 second
Description:	Sets the length of time that the modem does not receive information before it disconnects.

CALLING TONE
Type:	Configuration
Format:	AT [cmds] -Cn [cmds]
Description:	Controls whether the DTE will allow the modem to send a 1300Hz calling tone when originating
Command	Function
-C0	Disable calling tone
í -C1	1300Hz calling tone sent for all data connections
-C2	V.8 calling tone sent for V.34 modulations; 1300Hz calling tone sent for all other modulations

IDENTIFY MODEM MANUFACTURER
Type:		Configuration
Format:		AT [cmds] +GMI? [cmds]
Description:		Commands DCE to send a message to the DTE indicating the DCE manufacturer
Note:	Modem manufacturers name may be changed using the firmware configuration utility

IDENTIFY PRODUCT MODEL
Type:		Configuration
Format:		AT [cmds] +GMM? [cmds]
Description:		Commands DCE to send a message to the DTE indicating the modem chipset name
Note:	Modem product model may be changed using the firmware configuration utility

IDENTIFY PRODUCT REVISION
Type:		Configuration
Format:		AT [cmds] +GMR? [cmds]
Description:		Commands DCE to send a message to the DTE indicating the modem chipset revision level
Note:	Modem chipset revision level may be changed using the firmware configuration utility

V.42bis - MAXIMUM STRING LENGTH
Type:	Immediate
Format:	AT [cmds] "On [cmds]
Default:	32
Range:	6-250
Unit:	Characters
Description:	Selects string size for V.42bis compression

BIT-MAPPED REGISTER S21
Format		AT [cmds] S21=n [cmds]
Range:		0-253
Unit:		Bit-mapped
Description:		Selects jack type, CTS/DCD/DSR signals, low DTR action, and the long space disconnect function.
Bit	Value	Function
0	0 1	Auxiliary relay is disabled Auxiliary relay is enabled when modem is off-hook
1	0	Reserved
2	0 1	CTS follows RTS CTS forced high
4, 3	00 01 10 11	DTR signal ignored Modem goes to command mode on low DTR Modem disconnects on low DTR; Auto-Answer is disabled. Modem is initialized on low DTR
5	0 í 1	DCD forced high DCD normal
6	í 0 1	DSR forced high DSR normal
7	í 0 1	Long space disconnect function disabled Long space disconnect function enabled

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 í 1	Remote digital loopback denied Remote digital loopback allowed
3 - 1	000 001 010 011 100 101 110 111	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 19200bps Sets serial port speed to 38400bps or greater
5, 4	í 00 01 10 11	Parity even Space Parity Parity odd Mark or No Parity
7, 6	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	Asynchronous mode, serial port speed follows connect speed
2, 4, 5	0	Not Used
6-7	00 í 01 10 11	ITU-T V.22 at 1200bps Bell 212A at 1200bps/ Bell 103J at 300bps ITU-T V.23 at 75/1200bps originate; 1200/75bps answer ITU-T V.23 at 1200/75bps answer; 75/1200bps originate

BIT-MAPPED REGISTER S31
Format:		AT [cmds] S31=n [cmds]
Range:		0-10
Description:		Select automode, trellis coding, calling tone, auto retrain & auto-fallback
Bit	Value		Function
0	0 í 1		In originate or answer mode, handshake occurs only in mode designated by the ATB command and S37 register. In originate or answer mode, handshake begins at line speed designated by the S37 register and ATB command. Modem may shift to a lower speed
1	í 0 1		V.32 trellis coding enabled V.32 trellis coding disabled
2	0		Reserved
3	0 í 1		Disable calling tone 1300Hz calling tone sent for all data connections
4	0 í 1		Auto-retrain disabled Auto-retrain enabled
5	0 1		Auto-fallback/fall-forward disabled Auto-fallback/fall-forward enabled
6,7	0		Reserved

BIT-MAPPED REGISTER S32
Format:		AT [cmds] S31=n [cmds]
Range:		0-10
Description:		Select x2 mode
Bit	Value		Function
0-4	0		Reserved
5	í 0 1		x2 mode disabled. Defaults to V.34 modulation x2 mode enabled
6, 7	0		Reserved

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	Speed of last connection
S37=3	300bps
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 (reserved for future products)
S37=19	33.6Kbps (reserved for future products)
S37=20	36.0Kbps
S37=21	33.3Kbps
S37=22	37.3Kbps
S37=23	41.3Kbps
S37=24	42.7Kbps
S37=25	44.0Kbps
S37=26	45.3Kbps
S37=27	46.7Kbps
S37=28	48.0Kbps
S37=29	49.3Kbps
S37=20	50.7Kbps
S37=21	52.0Kbps
S37=22	53.3Kbps
S37=23	54.6Kbps
S37=24	56.0Kbps
S37=25	57.3Kbps

SLEEP TIMER
Type:	Register
Format	AT [cmds] S33=n [cmds]
Default:	10
Range:	0-90
Unit:	Unidentified
Description:	Maximum duration of DTE and DCE inactivity allowed prior to initiating low-power sleep mode.