Multitech MT2834ZPX Betriebsanweisung PDF herunterladen (Seite 5)

3. AT Command Set

This section describes the AT command set. Note the following:

Type commands in either upper or lower case. Do not use a combination of upper and lower case

characters.

Use the Backspace key to delete errors.

All commands begin with the AT prefix, and are invoked by pressing [Enter] (Carriage Return). The

only exceptions are the A/ command (Repeat previous command) and +++ (Exit to on-line command

mode).

The maximum command length is 40 characters. This does not include the AT prefix, Carriage

Returns, or spaces.

Defaults are marked with an asterisk (*).

Command Function/Options

AT Attention Command. Required prefix for most command strings except A/, A: and

Escape Codes.

A Forced Answer. Answers call, even if no ring is present.

A/ Re-execute Last Command. Used mainly to redial. Does not require the AT prefix or a

Carriage Return to execute.

A: Continuous Redial. Redials last number dialed until answered.

$ Calling Card Symbol. When placed in the dialing string, this character allows the modem

to detect AT&T's "Call Card" tones to access the user's calling card when originating an

on-line connection.

$An Discard / Buffer Data during Auto-Reliable Linking.

$A0 Discards data during auto-reliable linking.

$A1 Buffers data during auto-reliable linking.

#An Selects Initial Handshake

* #A0 Detect all speeds during handshake.

#A1 14.4K bps only if V.32Bis, 9600 bps only if V.32.

#A2 Detect high speed only (14.4K, 9600, 4800 bps).

#A3 Disable high speed detect (2400, 1200, 300 bps).

&Bn Transmit Buffer Size

* &B0 Normal transmit buffer size (2K).

&B1 Reduced transmit buffer size (512).

&BSn Transmit Block Size

&BS0 Maximum transmit block size of 64 characters.

* &BS1 Maximum transmit block size of 256 characters

(MNP mode) / 128 characters (LAP-M mode).

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Multitech MT2834ZPX Betriebsanweisung Seite 5