C h a p t e r
5
AT Commands
AT Commands
5-1
The AT commands are used to directly handle fax/modem data
activities, such as dialing or answering a data call or sending a fax. To
send commands to your modem, you must access the modem in a
terminal mode which is provided by most communication software.
Also, you need to know the format for typing the fax/modem commands
and responses.
This chapter tells you how to properly use the AT commands.
If you will be using a communication software
program to do fax/modem communication, you will
probably not need to type the commands because the
software program will handle these tasks for you.
Similarly, you will not see the response because your
software program may intercept them.
5.1
Entering a Command
To enter a command:
1. Type
AT
. This is the Attention Code informing the modem that a
command follows. The Attention Code may be in upper or lower
case.
2.
Type the command. Refer to the succeeding sections.
3. Press
to send the command to the modem (except for A/ and
+++ commands).
