MultiModemDSVD User Guide

4 AT Commands, S-Registers, and Result Codes

 

 

Online command mode. The modem receives a \Bn command

 

 

from the computer:

 

\K0

Clear data buffers and send break to the remote modem.

 

\K1

Same as \K0.

 

\K2

Send break immediately to the remote modem.

 

\K3

Same as \K2.

 

\K4

Send break to the remote modem in sequence with the trans-

 

 

mitted data.

 

\K5

Same as \K4.

Command:

\Nn

Error Correction Mode Selection

Values:

 

n = 0–5

Default:

 

3

Description:

\N0

Normal (non-error correction) mode with data buffering.

 

 

(Forces &Q6.)

 

\N1

Direct mode. Equivalent of &M0 and &Q0 modes. (Forces &Q0.)

 

\N2

V.42/MNP reliable (error-correction) mode. The modem at-

 

 

tempts first a V.42 connection and then an MNP connection.

 

 

Failure to make a reliable connection results in the modem

 

 

hanging up. (Forces &Q5, S36=4, and S48=7.)

 

\N3

V.42/MNP auto-reliable mode. The modem attempts first to

 

 

connect in V.42 mode, then in MNP mode, and finally in non-

 

 

error-correction mode with data buffering. (Forces &Q5, S36=7,

 

 

and S48=7.)

 

\N4

V.42 (LAPM) reliable mode.If the modem cannot make a V.42

 

 

connection, it disconnects. (Forces &Q5 and S48=0.) Note: The

 

 

-K1command can override the \N4 command.

 

\N5

MNP reliable mode.If the modem cannot make an MNP con-

 

 

nection, it disconnects. (Forces &Q5, S36=4, and S48=128.)

Command:

\Vn

Single Line Connect Message

Values:

 

n = 0 or 1

Default:

 

0

Description:

\V0

Disables single line connect message. Connect messages are

 

 

controlled by the X, W, and S95 settings.

 

\V1

Enables single line connect messages in the format: CONNECT

 

 

<Serial Port Speed></Modulation></Protocol></Compression>

 

 

</Line Speed>/<Voice and Data>. Overrides the X, W, and S95

commands. Connect messages are displayed in the single line format subject to the commands V and Q. In non-verbose mode (V0), single line connect messages are disabled and a single numeric result code is generated for CONNECT.

Multi-Tech Systems, Inc.

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