Standard Horizon GM29 manual Introduction to AT Commands, Syntax Description

1. Introduction to AT Commands

1.1 Overview

AT commands, issued from a computer in your application are used to control and implement the functions of the modem.

Using AT commands, the following actions are possible:

•Control of DCE

•GPRS

•Call control

•Supplementary Service

•SIM application tool kit

The GM29 contains a large number of Ericsson-specific commands in addition to those implemented in accordance with the GSM and ITU-T recommendations. These commands are provided to enhance the functions of the modem. The Ericsson-specific commands are identified by the asterisk that precedes the command (see the syntax description provided below).

1.2 Syntax Description

This section provides a brief description of the syntax used for the GM29, AT command set. See the ITU-T recommendation V.25ter for additional information.

1.2.1 Conventions

In this manual, the following conventions are used to explain the AT commands.

<command>	The name of the command that is to be entered.
<parameter>	The parameter values that are defined for a certain
	command.
<CR>	The command line is terminated by the Carriage
	Return (or Enter key) or ATS3 command.
<LF>	Line feed character or ATS4 command.
< >	The term enclosed in angle brackets is a syntactical
	element. The brackets do not appear in the command
	line.
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