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C6144/C5144/Z3144/Z5144

MEGAHERTZ CORPORATION

C6144/C5144/Z3144/Z5144

Modem Type

Data (synchronous/asynchronous)/Fax

Maximum Data Rate

14.4Kbps

Maximum Fax Rate

14.4Kbps

Data Bus

Internal

Fax Class

Class II

Data Modulation Protocol

Bell 103A/212A

ITU-T V.21, V.22, V.22bis, V.23, 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

V1286

Proprietary AT Command Set

AUTO-RELIABLE FALLBACK CHARACTER

Type:

Register

Format:

AT [cmds] %An [cmds]

Example:

AT%A0 <CR>

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]

Example:

AT \C1 &W<CR>

Description:

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

Command

Function

\CO

Data is discarded.

\C1

Data is buffered.

\C2

Data is discarded, sets to normal mode and sends auto-reliable character to serial port.

AUTO-RETRAIN

Type:

Configuration

Format:

AT [cmds] %En [cmds]

Example:

AT %E1 <CR>

Description:

Selects auto-retrain mode.

Command

Function

%E0

Auto-retrain disabled.

%E1

Auto-retrain enabled.

BIT-MAPPED REGISTER S14

Format

AT [cmds] S14=n [cmds]

Example:

ATS14=10 <CR>

Default:

10

Range:

0 - 174

Unit:

Bit-mapped

Description:

Controls echo commands, result codes, pulse/tone dialing, and answer/originate modes.

Bit

Value

Function

0

0

Not used.

1

0

1

Echo disabled.

Echo enabled.

2

0

1

Result codes disabled.

Result codes enabled.

3

0

1

Numeric form.

Verbose form.

4

0

Not used.

5

0

1

Tone dialing enabled.

Pulse dialing enabled.

6

0

Not used.

7

0

1

Answer enabled.

Originate enabled.

BIT-MAPPED REGISTER S21

Format

AT [cmds] S21=n [cmds]

Example:

ATS21=4<CR>

Default:

4

Range:

0 - 253

Unit:

Bit-mapped

Description:

Controls jack type, CTS signal, low DTR action, DCD signal, DSR signal, and the Long Space Disconnect function.

Bit

Value

Function

0

0

1

Selects RJ-11, RJ-41S, or RJ45S jack.

Selects RJ-12 or RJ-13 jack.

1

0

Not used.

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

1

DCD forced high.

DCD normal.

6

0

1

DSR forced high.

DSR normal.

7

0

1

Long Space Disconnect function disabled.

Long Space Disconnect function enabled.

BIT-MAPPED REGISTER S22

Format

AT [cmds] S22=n [cmds]

Example:

ATS22=117<CR>

Default:

117

Range:

0-127

Unit:

Bit-mapped

Description:

Controls speaker volume and controls, and limits results codes.

Bit

Value

Function

1, 0

00

01

10

11

Off volume.

Low 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, 5, 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.

BIT-MAPPED REGISTER S23

Format

AT [cmds] S23=n [cmds]

Example:

ATS23=183<CR>

Default:

183

Range:

0-255

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, 2, 1

000

001

010

011

100

101

110

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.

5,4

00

10

11

Parity even.

Parity odd.

No parity.

7, 6

00

01

10

Guard tone disabled.

Guard tone disabled.

Guard tone 1800Hz enabled.

BREAK SEND

Type:

Configuration

Format:

AT [cmds] \Bn [cmds]

Example:

AT \B3 &W<CR>

Range:

1-9

Unit:

100ms

Description:

Sends break to modem.

BREAK TYPE

Type:

Configuration

Format:

AT [cmds] \Kn [cmds]

Example:

AT \K1 <CR>

Description:

Configures action of break signal.

Command

Break from DTE

Modem receives \B

Break received from remote modem

\K0

Online command mode enabled, send no break to remote modem.

Break sent to remote modem and buffered cleared.

Buffers cleared, break sent to DTE.

\K1

Break sent to remote modem and buffered cleared.

Break sent to remote modem and buffered cleared.

Buffers cleared, break sent to DTE.

\K2

Online command mode enabled, send no break 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.

Break sent immediately to DTE.

\K4

Online command mode enabled, send no break to remote modem.

Send break with transmitted data.

Break sent with received data to the DTE.

\K5

Send break with transmitted data.

Send break with transmitted data.

Break sent with received data to the DTE.

COMPRESSION

Type:

Configuration

Format:

AT %Cn

Example:

AT \N7 %C1 *AP0<CR>

Description:

Selects data compression.

Command

Function

%C0

Data compression disabled.

%C1

Data compression enabled.

CONNECT MODE

Type:

Configuration

Format:

AT [cmds] \Nn [cmds]

Example:

AT \N1 DT555-1212<CR>

Description:

Sets connect mode.

Command

Function

\N0

Normal mode enabled.

\N1

Normal mode enabled.

\N2

Reliable MNP mode enabled.

\N3

Auto-reliable MNP mode enabled.

\N4

Reliable LAPM mode enabled.

\N5

Auto-reliable LAPM mode enabled.

\N6

Reliable LAPM mode with fallback to MNP enabled.

\N7

Auto-reliable LAPM mode with fallback to MNP enabled.

CONNECTION SPEED LOWER LIMIT

Type:

Configuration

Format:

AT [cmds] %Mn [cmds]

Example:

AT %M300 \JO<CR>

Description:

Sets slowest allowed connection speed.

Command

Function

%M300

Select 300bps minimum speed.

%M1200

Select 1200bps minimum speed.

%M2400

Select 2400bps minimum speed.

%M4800

Select 4800bps minimum speed.

%M7200

Select 7200bps minimum speed.

%M9600

Select 9600bps minimum speed.

%M12000

Select 12Kbps minimum speed.

%M14400

Select 14.4Kbps minimum speed.

CONNECTION SPEED UPPER LIMIT

Type:

Configuration

Format:

AT [cmds] %Bn [cmds]

Example:

AT %L3 %B9600 \J0<CR>

Description:

Sets fastest allowed connection speed.

Command

Function

%B300

Select 300bps maximum speed.

%B1200

Select 1200bps maximum speed.

%B2400

Select 2400bps maximum speed.

%B4800

Select 4800bps maximum speed.

%B9600

Select 9600bps maximum speed.

%B7200

Select 7200bps maximum speed.

%B12000

Select 12Kbps maximum speed.

%B14400

Select 14.4Kbps maximum speed.

EXTENDED RESULT CODES

Type:

Configuration

Format:

AT [cmds] \Vn [cmds]

Example:

AT \V1 %C1<CR>

Description:

Selects extended result codes.

Command

Function

\V0

Extended result codes disabled.

\V1

Reliable mode result codes enabled.

\V2

Reliable mode, error control, and compression result codes enabled.

FLOW CONTROL

Type:

Configuration

Format:

AT [cmds] \Gn [cmds]

Example:

AT \G1 &K3<CR>

Description:

Selects modem port flow control.

Command

Function

\G0

Flow control disabled.

\G1

Flow control enabled.

FLOW CONTROL - ENQ/ACK

Type:

Configuration

Format:

AT [cmds] \Hn [cmds]

Example:

AT \H9 <CR>

Description:

Selects ENQ/ACK pacing.

Command

Function

\H0

Disables ENQ/ACK pacing.

\H1

Enables ENQ/ACK pacing in terminal mode.

\H2

Enables ENQ/ACK pacing in host mode.

FLOW CONTROL TYPE

Type:

Configuration

Format:

AT [cmds] \Qn [cmds]

Example:

AT \Q5<CR>

Description:

Sets type of flow control used by modem.

Command

Function

\Q0

Flow control disabled.

\Q1

Bi-directional XON/XOFF flow control enabled.

\Q2

Unidirectional CTS/RTS flow control enabled.

\Q3

Bi-directional CTS/RTS flow control enabled.

\Q4

Unidirectional XON/XOFF flow control enabled.

\Q5

Unidirectional CTS/RTS flow control enabled with CTS forced low until connect.

\Q6

Bi-directional CTS/RTS flow control enabled with CTS forced low until connect.

INACTIVITY TIMER

Type:

Configuration

Format:

AT [cmds] \Tn [cmds]

Example:

AT\T20<CR>

Default:

0

Range:

0 - 90

Unit:

1 minute

Description:

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

LOCK SERIAL PORT

Type:

Configuration

Format:

AT [cmds] \Jn [cmds]

Example:

AT %L3 %B14 \J0 <CR>

Description:

Sets operation of serial port speed.

Command

Function

\J0

Serial speed locked.

\J1

Serial speed follows connect speed.

MAXIMUM BLOCK SIZE FOR TRANSMISSION

Type:

Configuration

Format:

AT [cmds] \An [cmds]

Example:

AT \A3 %C1<CR>

Description:

Sets the maximum transmittable block size.

Command

Function

\A0

Maximum MNP block size is 64 characters.

\A1

Maximum MNP block size is 128 characters.

\A2

Maximum MNP block size is 192 characters.

\A3

Maximum MNP block size is 256 characters.

PROTOCOL

Type:

Configuration

Format:

AT [cmds] Bn [cmds]

Example:

AT S27=64 <CR>

Description:

Selects the active protocols.

Command

Function

S27=0

ITU-T protocols.

S27=64

Bell protocols.

REPORT PRODUCT VERSION

Type:

Immediate

Format:

AT [cmds] %V [cmds]

Example:

AT I3 &V1 %V <CR>

Description:

Reports product version.

SDLC CONFIGURATION

Format

AT [cmds] S19=n [cmds]

Example:

AT S19=40 <CR>

Default:

0

Range:

0 - 22

Unit:

Bit-mapped

Description:

Controls synchronous communication mode, SDLC address detection, and SDLC idle.

Bit

Value

Function

0

0

Not used.

1

0

1

Binary synchronous communication.

SDLC.

2

0

1

SDLC address detect disabled.

SDLC address detect enabled.

3

0

Not used.

4

0

1

SDLC idle MARK

SDLC idle FLAG

SWITCH TO MNP MODE

Type:

Configuration

Format:

AT [cmds] \Z [cmds]

Example:

AT \Z &W<CR>

Description:

Switches to normal mode from MNP mode.

TEST MODES

Format

AT [cmds] S16=n [cmds]

Example:

AT S16=40 <CR>

Default:

Unidentified

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 with self-test not in progress.

Remote digital loopback with self-test in progress.

6

0

1

Local analog loopback with self-test not in progress.

Local analog loopback with self-test in progress.

XON/XOFF PASS-THROUGH

Type:

Configuration

Format:

AT [cmds] \Xn [cmds]

Example:

AT \X1 O <CR>

Description:

Selects whether XON/XOFF signals are sent to remote modem.

Command

Function

\X0

XON/XOFF signals trapped by local modem.

\X1

XON/XOFF passed through local modem.