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MT3400ZLX

MULTI-TECH SYSTEMS, INC.

MT3400ZLX

Card Type

Modem, Fax

Chip Set

Unidentified

Maximum Modem Rate

33.6Kbps

Maximum Fax Rate

14.4Kbps

Data Modulation Protocol

Bell 103/212A

ITU-T V.32bis, V.34, V34bis

Fax Modulation Protocol

ITU-T V.17, V29, V.27ter

Error Correction/Compression

MNP5, V.42bis

Fax Class

Class I & II

Data Bus

PCMCIA

54717

SUPPORTED COMMAND SET

Basic AT Commands

AT, A/

A, E, H, M, P, Q, T, V, W, X, Z

&C, &F, &G, &R, &V, &W, &Z

Extended AT Commands

\A, \G, \J, \K, \V, \X

S Registers

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

 

Note: See MHI Help File for full command documentation.

Proprietary AT Command Set

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 mode, handshake begins at line speed designated by the S37 register and the B command

í N1

In originate mode, handshake begins at line speed designated by the S37 register. and the B command. Modem can shift to a slower speed if necessary.

AUTOSYNC COMPATIBILITY

Type:

Configuration

Format:

AT [cmds] &J [cmds]

Description:

Dummy command for autosync compatibility

Command

Function

&J0

Send OK to DTE

COMMUNICATIONS MODE

Type:

Configuration

Format:

AT [cmds] &Mn [cmds]

Description:

Selects communications mode

Command

Mode

í &M0

Asynchronous mode

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 or V.21 at 300bps

B1

Bell 212A at 1200bps or Bell 103 at 300bps

B2

Deselects V.23 reverse channel

B3

Deselects V.23 reverse channel

í B16

V.21 at 300bps

DATA SET READY (DSR)

Type:

Configuration

Format:

AT [cmds] &Sn [cmds]

Description:

Selects DSR options

Command

Function

í &S0

DSR forced high

&S1

DSR high only while modem is connected

DATA TERMINAL READY (DTR)

Type:

Configuration

Format:

AT [cmds] &Dn [cmds]

Description:

Selects modem response to DTR

Command

Function

&D0

Modem does not respond to DTR

&D1

Modem goes to command mode after DTR goes is off

í &D2

Modem goes to command mode and disconnects (hangs up) after DTR goes off; Auto-Answer is disabled.

&D3

Modem is initialized after DTR goes off

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

Reverse dial. Originate call in answer mode

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 quiet 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.

FLOW CONTROL

Type:

Configuration

Format:

AT [cmds] &Kn [cmds]

Description:

Enables flow control options

Command

Function

&K0

Flow control disabled

í &K3

RTS to CTS flow control enabled

&K4

XON/XOFF flow control enabled

ON-LINE

Type:

Immediate

Format:

AT [cmds] On [cmds]

Description:

Controls on-line command (data transmission) state options.

Note: The O command must be placed at the end of the command string.

Command

Function

O0

On-line command mode with no retraining enabled

O1

On-line command mode with retraining enabled

O3-O14

Force modem to a new rate that is user defined by S62 regisiter

PULSE DIALING RATIO

Type:

Configuration

Format:

AT [cmds] &Pn [cmds]

Description:

Selects pulse dial make/break ratio

Command

Function

í &P0

39/61ms at 10pps (North America) or 33/67 (Japanese version)

&P1

33/67ms at 10pps (Europe) or 20pps (Japanese version)

RESTORE PROFILE ON POWER-UP

Type:

Configuration

Format:

AT [cmds] &Yn [cmds]

Description:

Restores a selected profile into the active profile on power-up (hard reset)

Command

Function

&Y0

Restore profile 0 on power-up

TEST MODES

Type:

Immediate

Format:

AT [cmds] &Tn

Description:

Selects test options

Command

Function

&T0

End current test

&T1

Begin local analog loopback test

&T3

Begin local digital loopback

V.32 - AUTO-RETRAIN

Type:

Configuration

Format:

AT [cmds] &Bn [cmds]

Description:

Controls auto-retrain function if poor line quality is detected

Command

Function

í &B1

Auto-retrain enabled if line quality is poor

&B2

Auto-retrain disabled; modem tolerates any line

Special Commands

COMPRESSION

Type:

Configuration

Format:

AT [cmds] %Cn [cmds]

Description:

Selects data compression

Command

Function

%C0

Data compression disabled

í %C1

MNP5 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

Reliable mode enabled

í \N3

Auto-reliable mode

\N4

V.42 or MNP 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

\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.

S(STATUS) -REGISTERS

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

Connects at last speed

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

33.6Kbps

DTE RATE STATUS

Type:

Register

Format

AT [cmds] S62=n [cmds]

Description:

Sets the maximum allowable data exchange rate attempted during handshake process.

Command

Function

S62=0

300bps

S62=1

600bps

S62=2

1200bps

S62=3

2400bps

S62=4

4800bps

S62=5

9600bps

S62=6

7200bps

S62=7

12.0Kbps

S62=8

14.4Kbps

S62=9

16.8Kbps

S62=10

19.2Kbps

S62=11

21.6Kbps

S62=12

24.0Kbps

S62=13

26.4Kbps

S62=14

28.8Kbps

S62=15

38.4Kbps

S62=16

57.6Kbps

S62=17

115.2Kbps

DTE TRANSFER SPEED

Type:

Register

Format

AT [cmds] S72=n [cmds]

Description:

Sets the maximum allowable data transfer speed

Command

Function

S72=0

300bps

S72=1

600bps

S72=2

600bps

S72=3

1200bps

S72=4

2400bps

S72=5

4800bps

S72=6

9600bps

S72=7

7200bps

S72=8

12.0Kbps

S72=9

14.4Kbps

S72=10

16.8Kbps

S72=11

19.2Kbps

S72=12

21.6Kbps

S72=13

24.0Kbps

S72=14

26.4Kbps

S72=15

28.8Kbps

S72=16

38.4Kbps

S72=17

57.6Kbps

S72=18

115.2Kbps

INACTIVITY TIMER

Type:

Register

Format:

AT [cmds] S46=n [cmds]

Range:

0-255

Unit:

1 second

Description:

Sets the length of time that the modem does not receive information before it goes into standby mode; S46=255 will disable. Default is 100.

POWER LEVEL

Type:

Register

Format:

AT [cmds] S64=n [cmds]

Range:

9-20

Unit:

1dBm

Description:

Transmission level power adjustment.

Note:

This register is only available in the Japanese version.