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Card Type

Modem/Fax card

Chip Set

Cirrus Logic

Maximum Modem Rate

56Kbps

Maximum Fax Rate

14.4Kbps

Data Modulation Protocol

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

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

(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

1

Voice view supported

1

1

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

100

CL-MD56XX digital speakerphone (+VSP=n)

3

1

Caller ID hardware on board

4

1

Reserved

5

1

Plug and play enabled

6

1

Microcontroller firmware in FLASH

7

0

Reserved

I11

Reports modem board configuration (bits below set by manufacturer)

0

1

Modem and sound card board

1

1

Microphone jack on board

2

1

External speaker on board

3

1

Local telephone off-hook detection on-board

4

1

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

1

Auxiliary relay is enabled when modem is off-hook

1

0

Reserved

2

1

CTS forced high

4, 3

11

Modem is initialized on low DTR

5

í 1

DCD normal

6

í 0

1

DSR normal

7

í 0

1

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

í 1

Remote digital loopback allowed

3 - 1

111

Sets serial port speed to 38400bps or greater

5, 4

í 00

11

Mark or No Parity

7, 6

10

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

í 01

11

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

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 disabled

2

0

Reserved

3

í 1

1300Hz calling tone sent for all data connections

4

í 1

Auto-retrain enabled

5

1

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 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.