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GM144E (REV.1)

MAXTECH

GM144E (REV.1)

Card Type

Fax, Modem (synchronous/asynchronous)

Chip Set

Unidentified

Maximum Data Rate

14.4Kbps

Maximum Fax Rate

14.4Kbps

Data Bus

External

Fax Class

Class I & II

Data Modulation Protocol

Bell 103/212A

ITU-T V.22, V.22bis, V.32, V.32bis

Fax Modulation Protocol

ITU-T V.17, V.21CH2, V.27ter, V.29

Error Correction/Compression

MNP5, V.42, V.42bis

CONNECTIONS

Function

Label

Function

Label

Line in

CN1

DC power

CN4

Line out

CN2

Power switch

SW1

RS-232/422

CN3

   

USER CONFIGURABLE SETTINGS

Setting

Label

Position

í SMART mode

JP1

Pins 2 & 3 closed

DUMB mode

JP1

Pins 1 & 2 closed

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

TST

Red

On

Normal operation

TST

Red

Flash

Modem has detected and corrected error

HS

Red

On

Modem is operating at 4800bps or faster

HS

Red

Off

Modem is operating at slower than 4800bps

AA

Red

On

Auto-answer enabled

AA

Red

Off

Auto-answer disabled

AA

Red

Blinking

Phone is ringing

CD

Red

On

Carrier signal detected

CD

Red

Off

Carrier signal not detected

OH

Red

On

Modem is off-hook

OH

Red

Off

Modem is on-hook

RD

Red

On

Modem is receiving data

RD

Red

Off

Modem is not receiving data

SD

Red

On

Modem is transmitting data

SD

Red

Off

Modem is not transmitting data

TR

Red

On

DTR signal is high

TR

Red

Off

DTR signal is low

MR

Red

On

Power is on

MR

Red

Off

Power is off

Proprietary AT Command Set

ACCEPT MNP RELIABLE MODE

Type:

Immediate

Format:

AT [cmds] \U [cmds]

Description:

Accept remote modemís request for MNP reliable mode

AUTO-RELIABLE FALLBACK CHARACTER

Type:

Configuration

Format:

AT [cmds] %An [cmds]

Default:

0

Range:

0-127

Unit:

ASCII

Description:

Sets the character used as the auto-reliable fallback character; %A0 will disable this function.

AUTO-RELIABLE TIME BUFFER CONFIGURATION

Type:

Configuration

Format:

AT [cmds] \Cn [cmds]

Description:

Controls the handling of incoming data during auto-reliable time period

Command

Function

í \C0

Data is discarded

\C1

Data is buffered

\C2

Data is discarded; modem returns to normal mode on receiving auto-reliable fallback character.

AUTO-RETRAIN

Type:

Configuration

Format:

AT [cmds] %En [cmds]

Description:

Controls auto-retrain mode

Command

Function

%E0

Auto-retrain disabled

í %E1

Auto-retrain enabled

BIT-MAPPED REGISTER S14

Format:

AT [cmds] S14=n [cmds]

Default:

Unidentified

Range:

0-255

Unit:

Bit-mapped

Description:

Controls echo, result codes and display, dumb mode, dial mode, stored profile, and answer/originate mode.

Bit

Value

Function

0

0

í 1

Command echo disabled

Command echo enabled

2, 1

í 00

01

10

Result codes enabled

Result codes disabled

Result codes enabled in originate mode only

3

0

í 1

Display result codes in numeric format

Display result codes in verbose format

4

í 0

1

Dumb mode disabled

Dumb mode enabled

5

í 0

1

Tone dial enabled

Pulse dial enabled

6

0

1

stored profile 0

stored profile 1

7

0

í 1

Answer mode enabled

Originate mode enabled

BIT-MAPPED REGISTER S16

Type:

Register

Format:

AT [cmds] S16=n [cmds]

Default:

23

Range:

0-55

Unit:

Bit-mapped

Description:

Grants/denies remote digital loopback; controls clear down signal, auto-retrain, and extended result codes.

Bit

Value

Function

0

0

í 1

Remote digital loopback denied

Remote digital loopback allowed

1

0

í 1

Disable clear down signal

Enable clear down signal

2

0

í 1

Auto-retrain disabled

Auto-retrain enabled

3

0

Not used

5, 4

00

í 01

10

11

Extended result codes disabled /DCE speed only

Extended result codes/DCE speed enabled

Extended result codes disabled /DTE speed only

Extended result codes/DTE speed enabled

BIT-MAPPED REGISTER S21

Format

AT [cmds] S21=n [cmds]

Default:

Unidentified

Range:

0-255

Unit:

Bit-mapped

Description:

Selects originate-only mode, line mode, CTS/DCD/DSR signals, low DTR action, and the long space disconnect function.

Bit

Value

Function

0

í 0

1

Disable originate-only mode

Enable originate-only mode

1

í 0

1

Switched line

Leased-line

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 S22

Format

AT [cmds] S22=n [cmds]

Default:

118

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

í 10

11

Low level volume

Low level volume

Medium level volume

High level volume

3, 2

00

í 01

10

11

Speaker off

Speaker off on carrier

Speaker always on

Speaker on during handshake

6 - 4

000

100

101

110

í 111

Basic result codes only enabled

Basic and connection speed result codes enabled

Basic and connection speed result codes and dial-tone detection enabled

All result codes except dial-tone detection enabled

All result codes enabled

7

í 0

1

39/61ms at 10pps (North America)

33/67ms at 10pps (Europe)

BIT-MAPPED REGISTER S23

Format

AT [cmds] S23=n [cmds]

Default:

Unidentified

Range:

0-186

Unit:

Bit-mapped

Description:

Controls DTE rate and parity, and sets guard tone.

Bit

Value

Function

3 - 0

0000

0010

0011

0100

í 0110

1000

1001

1010

1011

1100

1101

Sets serial port speed to 300bps

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 14400bps

Sets serial port speed to 19200bps

Sets serial port speed to 28800bps

Sets serial port speed to 38400bps

Sets serial port speed to 57600bps

Sets serial port speed to 115200bps

5, 4

í 00

01

10

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]

Default:

Unidentified

Range:

0-235

Unit:

Bit-mapped

Description:

Selects synchronous/asynchronous mode, clock source, and sets DCE speed.

Bit

Value

Function

1, 0

í 00

01

10

11

Asynchronous mode, serial port speed follows connect speed

Asynchronous off-line command mode and synchronous connect mode

Synchronous connect mode

Asynchronous off-line command mode on low DTR, synchronous connect mode on high DTR

3, 2

í 00

01

10

Local modem generates transmit clock source

Local DTE generates transmit clock source

Remote DCE/DTE generates transmit clock source

7 - 4

0000

0010

0011

0100

0101

0110

0111

1000

1001

1010

1011

1100

1101

1110

Sets DCE speed to 300bps

Sets DCE speed to 1200bps

Sets DCE speed to 2400bps

Sets DCE speed to 4800bps

Sets DCE speed to 7200bps

Sets DCE speed to 9600bps

Sets DCE speed to 12000bps

Sets DCE speed to 14400bps

Sets DCE speed to 16800bps

Sets DCE speed to 19200bps

Sets DCE speed to 21600bps

Sets DCE speed to 24000bps

Sets DCE speed to 26400bps

Sets DCE speed to 28800bps

BIT-MAPPED REGISTER S28

Format

AT [cmds] S28=n [cmds]

Default:

16

Range:

0-149

Unit:

Bit-mapped

Description:

Controls power-on auto-connect, security call-back, auto-rate negotiation ,and DCE protocol.

Bit

Value

Function

0

í 0

1

Disabled power-on auto-connect

Enabled power-on auto-connect

2, 1

í 00

01

10

Disabled security call-back

Password security check only

Enabled security call-back

3

í 0

1

Disable auto-rate negotiation

Enable auto-rate negotiation

7 - 4

0000

í 0001

0010

0011

0100

0101

0110

0111

1000

1001

1010

1011

1100

1101

1110

1111

ITU-T mode

Bell mode

Auto-scan mode

V.23 mode

Set Connection speed to 300bps

Set Connection speed to 1200bps

Set Connection speed to 2400bps

Set Connection speed to 4800bps

Set Connection speed to 9600bps

Set Connection speed to 14400bps

Set Connection speed to 16800bps

Set Connection speed to 19200bps

Set Connection speed to 21600bps

Set Connection speed to 24000bps

Set Connection speed to 26400bps

Set Connection speed to 28800bps

BREAK SEND

Type:

Configuration

Format:

AT [cmds] \Bn [cmds]

Default:

3

Range:

1-9

Unit:

.1 second

Description:

Sends break to modem

BREAK TYPE

Type:

Configuration

Format:

AT [cmds] \Kn [cmds]

Description:

Configures action of break signal

Command

Break from DTE

in Reliable/Normal

mode

Break from DTE

in Direct mode

Modem receives \B

Break received from remote modem

\K0

No break sent to remote modem

On-line command mode enabled, break sent to remote modem

Break sent to remote modem and buffered cleared

Buffers cleared, break sent to DTE

\K1

Break sent to remote modem immediately and clear buffered

Send break to remote modem immediately

Break sent to remote modem and buffered cleared

Buffers cleared, break sent to DTE

\K2

No break sent to remote modem

On-line command mode enabled, break sent to remote modem

Send break to remote modem immediately

Break sent immediately to DTE

\K3

Send break to remote modem immediately

Send break to remote modem immediately

Send break to remote modem immediately

Break sent immediately to DTE

\K4

No break sent to remote modem

On-line command mode enabled, break sent to remote modem

Send break with transmitted data

Break sent with received data to the DTE

í \K5

Send break with transmitted data

Send break to remote modem immediately

Send break with transmitted data

Break sent with received data to the DTE

CLEAR DOWN SIGNAL

Type:

Configuration

Format:

AT [cmds] %Dn [cmds]

Description:

Controls clear down signal

Command

Function

%D0

Disable clear down signal

í %D1

Enable clear down signal

COMPRESSION

Type:

Configuration

Format:

AT [cmds] %Cn [cmds]

Description:

Selects data compression

Command

Function

%C0

Data compression disabled

í %C1

Data compression 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

Direct mode enabled

\N2

MNP mode enabled

\N3

MNP reliable mode enabled

\N4

V.42 reliable mode enabled

\N5

Reliable mode enabled

í \N6

Auto-reliable mode enabled

CONVERT TO MNP RELIABLE MODE

Type:

Immediate

Format:

AT [cmds] \Y [cmds]

Description:

Converts to MNP reliable mode from normal or direct mode

COUNTRY CODE

Type:

Configuration

Format:

AT [cmds] *NCn [cmds]

Description:

Select country code to be used

Command

Function

0

Austria

1

Belgium

2

Denmark

3

Finland

4

France

5

Germany

6

Ireland

7

Italy

8

Luxembourg

9

Netherlands

10

Norway

11

Portugal

12

Spain

13

Sweden

14

Switzerland

15

United Kingdom

16

New Zealand

17

Australia

DISPLAY PASSWORD

Type:

Configuration

Format:

AT [cmds] \P=? [cmds]

Description:

Displays a password from non-volatile memory

Note: NO PASSWORD SAVED is returned if no password was saved.

ECHO DATA

Type:

Configuration

Format:

AT [cmds] \En [cmds]

Description:

Enables modem to echo received data

Command

Function

í \E0

Data echo disabled

\E1

Data echo enabled

EXTENDED RESULT CODES

Type:

Configuration

Format:

AT [cmds] \Vn [cmds]

Description:

Selects extended result codes

Command

Function

\V0

Extended result codes/DCE speed disabled

í \V1

Extended result codes/DCE speed enabled

\V2

Extended result codes/DTE speed disabled

\V3

Extended result codes/DTE speed enabled

FLOW CONTROL

Type:

Configuration

Format:

AT [cmds] \Gn [cmds]

Description:

Selects modem port flow control

Command

Function

í \G0

Flow control disabled

\G1

Flow control 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

\Q4

Unidirectional XON/XOFF flow control by DCE enabled

INACTIVITY TIMER

Type:

Configuration

Format:

AT [cmds] \Tn [cmds]

Default:

0

Range:

0-90

Unit:

1 minute

Description:

Sets the length of time that the modem does not receive information before it disconnects.

INITIATE MNP RELIABLE MODE

Type:

Immediate

Format:

AT [cmds] \O [cmds]

Description:

Initiates MNP reliable mode from normal or direct mode

LOCK SERIAL PORT

Type:

Configuration

Format:

AT [cmds] \Jn [cmds]

Description:

Sets operation of serial port speed

Command

Function

í \J0

Serial speed locked

\J1

Serial speed follows connect speed

MAXIMUM BLOCK SIZE FOR TRANSMISSION

Type:

Configuration

Format:

AT [cmds] \An [cmds]

Description:

Sets the maximum transmittable block size

Command

Function

\A0

MNP block size is 64 characters

\A1

MNP block size is 128 characters

\A2

MNP block size is 192 characters

í \A3

MNP block size is 256 characters

PASSWORD

Type:

Configuration

Format:

AT [cmds] \P=n [cmds]

Description:

Stores a password in non-volatile memory

Note: Maximum of 7 characters and password is not case sensitive.

POWER-ON AUTO-CONNECT

Type:

Configuration

Format:

AT [cmds] %Pn [cmds]

Description:

Controls power-on auto-connect

Command

Function

í %P0

Disabled power-on auto-connect

%P1

Enabled power-on auto-connect

REPORT INFORMATION

Type:

Immediate

Format:

AT [cmds] In [cmds]

Description:

Displays information requested

Command

Function

I0

Reports product identification code

I1

Reports ROM checksum

I2

Internal memory test

I3

Reports V.42bis ID

I4

Reports internal ID

I90

Report country code

SECURITY CALL-BACK

Type:

Configuration

Format:

AT [cmds] %Sn [cmds]

Description:

Controls security call-back

Command

Function

í %S0

Disabled security call-back

%S1

Enabled security call-back

%S2

Password security check only

SWITCH TO NORMAL MODE

Type:

Immediate

Format:

AT [cmds] \Z [cmds]

Description:

Switches to normal mode from MNP mode

TRANSMISSION LEVEL

Type

Configuration

Format

AT [cmds] %Ln [cmds]

Default

12

Range

0-15

Unit

-1 dBm

Description

Sets the signal level for transmission

XON/XOFF PASS-THROUGH

Type:

Configuration

Format:

AT [cmds] \Xn [cmds]

Description:

Selects whether XON/XOFF signals are sent to remote modem

Command

Function

í \X0

XON/XOFF signals trapped by local modem

\X1

XON/XOFF passed through local modem