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LZT 123 7263 R1A
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 module.
Using AT commands, the following actions are possible:
• Control of DCE
•GPRS
• Call control
• Supplementary Service
• SIM application tool kit
The GM47 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
functionsof the module. 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
GM47, 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.
<LF> Line feed character.
< > The term enclosed in angle brackets is a syntactical
element. The brackets do not appear in the command
line.
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