Sing The At Command; This Chapter Includes Information About; Overview; General Rules For Using At Comman - 3Com Courier Reference

2

Overview

General rules for
using AT commands
U
SING THE

This chapter includes information about

Basic AT commands
Using S-Registers
Understanding bit-mapped S-Registers
You can use AT commands to change your modem settings at any time.
To send AT commands to your modem, you need to put your
communications software in Terminal Mode. In terminal mode, what you
type is sent directly to the modem.
You must follow some general guidelines to send AT commands to your
modem:
Type AT before each command and press Enter after each command.
The exceptions are A/, A> and +++, which require neither AT nor Enter.
Leave zeroes off the end of AT commands. A missing numeric
parameter is assumed to be a zero. For example, ATE is equivalent t
ATE0
Create compound commands of up to 56 characters between AT and
Enter. See the following example.
AT C
OMMAND
S
ET