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Card Type

Modem, Fax

Chip Set

Rockwell

Maximum Modem Rate

56Kbps

Maximum Fax Rate

14.4Kbps

Data Modulation Protocol

Rockwell 56K

Fax Modulation Protocol

ITU-T V.17, V.21, V.27ter, V.29

Error Correction/Compression

MNP5, V.42, V.42bis

Fax Class

Class I

Data Bus

External

SUPPORTED COMMAND SET

Basic AT Commands

AT, �+++�, A/

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

&C, &P, &Q, &W, &Y, &Z

Extended AT Commands

\N

%C, %E, %G, %L

S Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S24, S25, S26, S29, S30, S32, S33, S38

Special Commands

#CID, +MS

Note: See MHI Help File for full command documentation.

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

DATA TERMINAL READY (DTR)

Type:

Configuration

Format:

AT [cmds] &Dn [cmds]

Description:

Selects modem response to DTR

&Q Setting

&D0

&D1

&D2

&D3

í &Q0, &Q5, &Q6

NONE

Command 3

Command 1

Command 4

&Q1, &Q4

Command 2

Command 3

Command 1

Command 4

&Q2, &Q3

Command 1

Command 1

Command 1

Command 1

Command

Function

í 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 is initialized after DTR goes off

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

í &F0

Restore factory (PC) configuration; with hardware flow control, error correction, and data compression enabled

&F1

Restore factory (Mac) default configuration, with hardware flow control, error correction, and data compression enabled

FLASH ROM

Type:

Configuration

Format:

AT [cmds] ** [cmds]

Description:

Set flash ROM code XMODEM upload mode

FLOW CONTROL

Type:

Configuration

Format:

AT [cmds] &Kn [cmds]

Description:

Enables flow control options

Command

Function

&K0

Flow control disabled

í &K3

RTS/CTS flow control enabled

&K4

XON/XOFF flow control enabled

&K5

Transparent XON/XOFF flow control enabled

&K6

Both RTS/CTS and XON/XOFF flow control enabled

LINE SIGNAL QUALITY

Type:

Immediate

Format:

AT [cmds] %Q [cmds]

Description:

Returns a value which indicates line signal quality

Command

Function

%Q0

Connection statistics

%Q1

Data transfer statistics

%Q2

Data transfer stats

REPORT INFORMATION

Type:

Immediate

Format:

AT [cmds] In [cmds]

Description:

Displays information requested

Command

Function

I0

Reports maximum data carrier rate

I1

Reports ROM checksum

I2

Tests and reports ROM checksum

I3

Reports ROM code revision number

I4

Reports supported protocols, in encrypted format

I5

Reports firmware copyright information

I6

Reports country code for country PSTN signals

I7

Reports DSP model and version code

I9

PnP COMID string

I10

Reports features supported by the modem

RESULT CODES

Type:

Configuration

Format:

AT [cmds] Qn [cmds]

Description:

Enables modem to send result codes to the DTE

Command

Function

í Q0

Result code sending enabled

Q1

Result code sending disabled

Q2

Enables result code sending on originate; disable on answer

SPEAKER VOLUME

Type:

Configuration

Format:

AT [cmds] Ln [cmds]

Description:

Controls speaker volume

Command

Function

L0

Speaker disabled

í L2

Medium volume setting

L3

Highest volume setting

COUNTRY CODE DISPLAY

Type:

Configuration

Format:

AT [cmds] *NC? [cmds]

Description:

Display country codes and configurations supported

COUNTRY CODES SELECT

Type:

Configuration

Format:

AT [cmds] *NCn [cmds]

Description:

Select country code

Command

Function

*NC000

United States

*NC001

Austria

*NC002

Belgium

*NC003

Denmark

*NC004

Finland

*NC005

France

*NC006

Germany

*NC007

Ireland

*NC008

Italy

*NC010

Netherlands

*NC011

Norway

*NC012

Portugal

*NC013

Spain

*NC014

Sweden

*NC015

Switzerland

*NC016

United Kingdom

*NC017

Greece

*NC022

United States

*NC040

Australia

*NC043

Japan

*NC047

Singapore

*NC060

South Africa

*NC061

Korea

DIALING CODES

Type:

Configuration

Format:

AT [cmds] *Zn [cmds]

Description:

Change dialing codes

Command

Function

*Z0

Use dial code 0

*Z1

Use dial code 1

AUTOMATIC RATE ADAPTION

Type:

Register

Format

AT [cmds] S191=n [cmds]

Default:

128

Range:

0-255

Description:

Sets the automatic rate adaption bias

BIT-MAPPED REGISTER S27

Format

AT [cmds] S27=n [cmds]

Default:

Unidentified

Range:

0-111

Unit:

Bit-mapped

Description:

Selects synchronous/asynchronous mode, line type, clock source, and ITU-T/Bell modes.

Bit

Value

Function

0

1

&Q4

0

1, 1

&Q6

1

0, 1

&Q5

2

1

Leased line

4

1

external sync clock select

6

1

Bell

7

128

Reserved

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

1 - 3

No failure - normal hang-up after fax connection

4

Carrier signal lost

5

No error-control detected for remote modem during feature negotiation

6

Remote modem failed to respond to feature negotiation

7

Local modem is asynchronous-only, remote modem is synchronous-only

8

No common framing technique found

9

No common protocol found

10

Remote modem sent erroneous feature negotiation message

11

Remote modem failed to send synchronous information

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

15

Negotiated compression failed

16

Line speeds selected in S37 and S109 did not match

17

Time limit reached according to parameters set in S116

18

Time limit reached according to parameters set in S30

19

Long Space Disconnect (Y1) time limit reached

20

Key abort

21

V.42bis protocol violation

DISPLAY CONTROL

Type:

Register

Format:

AT [cmds] S201=n [cmds]

Description:

Controls the display

Bit

Value

Function

0

1

Carrier statistics enabled

1

REJ or SREJ from occurrence is also shown

2

Reserved

3

1

Rate re-negotiation display enabled

4

0

Demo mode disabled

5

1

LCD/LED update time slow

6

Reserved

7

Reserved

DISPLAY CONTROL

Type:

Register

Format

AT [cmds] S194=n [cmds]

Unit:

Bit-mapped

Description:

Sets the display control

Bit

Value

Function

0

1

Display basic mode

1

2

Carrier stats, issue ATZ after clearing this command to return to normal operation

2

4

Reserved

3

1

Rate renegotiation display enabled

4

16

Demo mode disabled

5

1

LCD/LED Dwell time slow

6

64

Reserved

7

128

Reserved

ERROR CORRECTION NEGOTIATION

Type:

Register

Format

AT [cmds] S36=n [cmds]

Description:

Selects the action of the modem if it fails to connect with the error-correction protocol set in &Q.

Command

Function

S36=0

Hang up

S36=1

Attempt a direct connection

S36=3

Reserved

S36=4

Attempt a connection at MNP2-4; if that fails, hang up.

S36=5

Attempt a connection at MNP2-4; if that fails, attempt a direct connection.

S36=6

Reserved

í S36=7

Attempt a connection at MNP2-4; if that fails, attempt a buffered connection.

EXTENDED RESULT CODES

Type:

Register

Format

AT [cmds] S95=n [cmds]

Default:

0

Range:

0-255

Unit:

Bit-mapped

Description:

Works in combination with the Wn command to enable extended result codes. Features enabled by S95 take precedence over the options selected by Wn.

Bit

Value

Function

0

1

CONNECT XXXX result code indicates DCE to DCE rate instead of DTE to DTE rate

1

2

Append/ARQ to CONNECT result code if EC is active

2

4

Enable CARRIER XXXX result code

3

8

Enable PROTOCOL XXXX result code

4

16

Undefined

5

32

Enable compression result code

6

64

Enable TX and RX V.34 CARRIER result code if in asymmetric carrier mode

7

128

Enable RINGING result code for ringback detection

MINIMUM EQM

Type:

Register

Format:

AT [cmds] S190=n [cmds]

Default:

20

Range:

10-255

Unit:

seconds

Description:

Sets the minimum "good" EQM

SERIAL PnP FUNCTION CONTROL

Type:

Register

Format

AT [cmds] S193=n [cmds]

Description:

Controls serial PnP function

Bit

Value

Function

0

1

Serial PnP saved to NVRAM enabled

1

Reserved

2

Reserved

3

Reserved

4

Reserved

5

Reserved

6

Reserved

7

Reserved

SPECIAL FUNCTION CONTROL

Type:

Register

Format

AT [cmds] S192=n [cmds]

Unit:

Bit-mapped

Description:

Controls the special functions

Bit

Value

Function

0

1

Fast

1

1

Attempt data carrier first, switch to fax mode if only CNG tone detected

2

1

V.34 transmitter power reduction based on INFO1 sequence enabled

3

1

V.34 phase 4 TRN period enabled

4

1

V.34 rate limiting after connection enabled

5

1

V.34 EQM threshold reduction for 3000 and 3429 symbol rates enabled

6

1

Retrain when possible false V.34 carrier is detected

7

1

Silent answer reason code on

CALL REQUEST WITH ADDRESS

Type:

Immediate

Format:

CRSn

Description:

Dials the number stored in memory register n

CALL REQUESTED NUMBER

Type:

Immediate

Format:

CRN<#>

Description:

Dials the number given; it will ignore spaces and hyphens in the string; if the string is more than fifty characters long, a result of INV will be returned.

CONNECT INCOMING CALLS

Type:

Immediate

Format:

CIC

Description:

Instructs the modem to answer an incoming call; if no call is currently incoming, a result of INV will be returned.

DISREGARD INCOMING CALL

Type:

Immediate

Format:

DIC

Description:

Instructs the modem to ignore the incoming call, if the modem is set to automatically answer; if no call is currently incoming, a result of INV will be returned.

PROGRAM NUMBER

Type:

Configuration

Format:

PRNn;<#> or PRNn

Description:

Stores a phone number in memory address n; if the number is more than fifty characters long, a result of INV will be returned. If the second form of this command is issued (i.e. with no string to store), it will clear memory address n.

REQUEST LIST OF DELAYED NUMBERS

Type:

Immediate

Format:

RLD

Description:

Requests the list of delayed numbers from the modem; this is a list of numbers that the modem attempted to call and failed, and is not allowed to call again until a set amount of time has elapsed; this is usually to prevent repeated dialing of a number (which could indicate an attempted security breach.) If this feature is not enabled, the modem will return INV.

REQUEST LIST OF FORBIDDEN NUMBERS

Type:

Immediate

Format:

RLF

Description:

Requests the list of forbidden numbers from the modem; the modem is unable to dial numbers on this list until its power has been cycled; if this feature is not enabled, the modem will return INV.

REQUEST LISTED NUMBERS

Type:

Immediate

Format:

RLI

Description:

Requests the modem to return the list of stored numbers; if no numbers are stored, the modem will return LSN.

DISTINCTIVE RING

Format:

AT [cmds] -SDR=n [cmds]

Default:

Unidentified

Range:

0 - 7

Description:

Selects which distinctive ring signals the modem will respond to.

Bit

Value

Function

0

1

Respond to distinctive ring type 1.

1

2

Enables double rings and reports these as RING 2 0.8s on, 0.4s off, 0.8s on, 0.4s off

2

4

Enables triple rings and reports these as RING 3 0.4s on, 0.2s off, 0.2s off, 4.0s off

LCD DISPLAYS

Type:

Configuration

Format:

AT [cmds] #LCDn [cmds]

Description:

Controls whether the DTE will allow the modem to send a 1300Hz calling tone when originating

Command

Function

#LCD0

"STRING mode disabled

#LCD1

"STRING string is displayed on LCD line 1

#LCD2

"STRING string is displayed on LCD line 2

MODE SELECTION

Type:

Immediate

Format:

AT [cmds] #CLS=n [cmds]

Description:

Selects which mode the modem will operate in.

Command

Function

#CLS=0

Modem will operate in data mode.

#CLS=1

Modem will operate in fax class I mode.

#CLS=2

Modem will operate in fax class II mode.

#CLS=8

Modem will operate in voice mode.

SELECT DATA, FAX, OR VOICE/AUDIO

Type:

Immediate

Format:

AT [cmds] #CLSn [cmds]

Description:

Selects data, fax, or voice/audio

Command

Function

#CLS0

Select data mode

#CLS1

Select class 1 fax

#CLS2

Select class 2 fax

#CLS8

Select voice/audio mode

#CLS8

Select online voice command mode

TOTAL VOLUME GAIN

Type:

Configuration

Format:

AT [cmds] L:nn [cmds]

Description:

Sets the total volume gain adjustment

Command

Function

í L:=00

Lowest gain

L:=31

Highest gain

VOICE DEVICE

Type:

Configuration

Format:

AT [cmds] #VLS=n [cmds]

Description:

Selects the I/O device for the DSP chip.

Note:

This modem may not support all options listed below. The #VLS? Command will display the available options.

Command

Function

í #VLS=0

Telephone line and handset used for voice I/O.

#VLS=1

Telephone handset used for voice I/O.

#VLS=2

Internal speaker only used for voice I/O.

#VLS=3

External microphone only used for voice I/O.

#VLS=4

Telephone line and handset used for voice I/O; internal speaker enabled.

#VLS=5

Headset used for voice I/O.

#VLS=6

Speakerphone used for voice I/O.

#VLS=7

Handset muted by disconnecting handset or speakerphone from telephone line.

#VLS=8

Connects caller ID relay for recording of conversation over handset.

#VLS=9

Connects handset (or speakerphone) to DSP chip for recording or playback.

VOICE DEVICE

Type:

Configuration

Format:

AT [cmds] #VLS=n [cmds]

Description:

Selects the I/O device for the DSP chip.

Note:

This modem may not support all options listed below. The #VLS? Command will display the available options.

Command

Function

í #VLS=0

Telephone line and handset used for voice I/O.

#VLS=1

Telephone handset used for voice I/O.

#VLS=2

Internal speaker only used for voice I/O.

#VLS=3

External microphone only used for voice I/O.

#VLS=4

Telephone line and handset used for voice I/O; internal speaker enabled.

#VLS=5

Headset used for voice I/O.

#VLS=6

Speakerphone used for voice I/O.

#VLS=7

Handset muted by disconnecting handset or speakerphone from telephone line.

#VLS=8

Connects caller ID relay for recording of conversation over handset.

#VLS=9

Connects handset (or speakerphone) to DSP chip for recording or playback.

VOICE RING DETECT TIME

Type:

Configuration

Format:

AT [cmds] #VRN=n [cmds]

Default:

Unidentified

Range:

Unidentified

Unit:

Unidentified

Description:

Sets the maximum time the modem will wait for the remote station to ring before it assumes that it went off-hook before it rang.

Command

Function

í #VLS=0

Disables the "ringback never came timer"

VOICE RING DETECT TIME

Type:

Configuration

Format:

AT [cmds] #VRN=n [cmds]

Default:

Unidentified

Range:

Unidentified

Unit:

Unidentified

Description:

Sets the maximum time the modem will wait for the remote station to ring before it assumes that it went off-hook before it rang.

Command

Function

í #VRN=0

Turns off the ringback never came timer. After dialing the modem sends VCON and immediately enters online voice command control

ERROR CONTROL SELECTION

Type:

Configuration

Format:

AT [cmds] +ESn, m, o, [cmds]

Description:

Selects the error control setting

Command

Function

n=0

Direct mode

n=1

Buffered mode

n=2

Initiate V.42 without detection

n=3

Initiate V.42 with detection

n=4

Alternate protocol (MNP)

n=5

Initiate with synchronous mode

n=6

Initiate with V.80 synchronous access mode

m=0

Error control optional; if error control is not established, maintain DTE-DCE data rate to match line rate and use buffered mode with flow control.

m=1

Error control optional; if error control is not established, change DTE-DCE data rate to match line rate and use direct mode

m=2

Error control required; if no LAPM, disconnect

m=3

MNP required; if no MNP, disconnect

o=0

Direct mode

o=1

EC disabled, buffered mode

o=3

EC optional; if no EC, use direct mode

o=4

Error control required; if no EC, disconnect

o=5

Error control optional; if no EC, disconnect

o=6

MNP error control required, if no MNP, disconnect

o=7

Synchronous mode

o=8

V.80 synchronous access mode.

INPUT BUFFER

Type:

Configuration

Format:

AT [cmds] Cn [cmds]

Description:

Controls the input buffer size.

Command

Function

n=0

10 - 759 bytes

o=0

11 - 760 bytes

p=0

Disables transmit level reporting

q=0

Sets the lowest carrier rate that may be used

r=0

Sets the maximum carrier rate that may be used

MANUFACTURER ID

Type:

Configuration

Format:

AT [cmds] +GMI [cmds]

Description:

Displays the manufacturer ID

MODEL ID

Type:

Configuration

Format:

AT [cmds] +GMM [cmds]

Description:

Displays the model ID

REQUEST CAPABILITIES LIST

Type:

Configuration

Format:

AT [cmds] +GCAP [cmds]

Description:

Displays one or more lines of information reporting the V.25ter commands available in the modem

ROM CODE

Type:

Configuration

Format:

AT [cmds] +GMRn, o, p, q, r [cmds]

Description:

Display the ROM code

SELECTIVE REPEAT

Type:

Configuration

Format:

AT [cmds] +ESRn [cmds]

Description:

Control selective repeat

Command

Function

+ESR0

Do not use SREJ

+ESR1

Use SREJ if available in remote DCE; continue without it if not

SYNCHRONOUS ACCESS MODE

Type:

Configuration

Format:

AT [cmds] +ESAn, m, o, p, q, r, s, t [cmds]

Description:

Specifies the bit sequence transmitted by the DCE when a transmit data buffer underrun condition occures while operating in transparent sub-mode

Command

Function

n=0

In transparent sub-mode, the DCE transmits SYN1 on idle. DCE receiver does not seek synchronization sequence

n=0

In transparent sub-mode, the DCE transmits SYN1 on idle. DCE receiver seeks SYN1 as a synchronization sequence

m=0

In framed sub-mode, the DCE transmits HDLC flage on idle

m=0

In framed sub-mode, the DCE transmits marks on idle

o=0

In framed sub-mode, DCE transmits HDLC abort when underrun during a frame

o=0

In framed sub-mode, the DCE transmits HDLC flag when underrun during a frame

p=0

Half duplex V.34 carriers are not supported. Value must be 0

q=0

CRC generation and checking disabled

r=0

NRZI encoding and decoding disabled

r=0

NRZI encoding and decoding enabled

s=0

Specifies the 8-bit transparent sub-mode synchronization sequence and idle transmission value.

T=0

Specifies the 16-bit synchronization sequences are not supported.

V.42bis DATA COMPRESSION

Type:

Configuration

Format:

AT [cmds] +DSn, m, o, p [cmds]

Description:

Controls the V.42bis data compression

Command

Function

n=0

Disabled

n=1

Compression on transmit only

n=2

Compression on receive only

n=3

Bi-directional compression

m=0

Do not require V>42bis compression when connecting

o=0

V.43bis dictionary size for bi-directional compression

o=1

V.42bis maximum dictionary size for bi-directional compression

p=0

Maximum V.42bis string size