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5. Executing Commands
If you will be using a communication software program to make data calls,
you will probably not need to type commands, because your software
program will handle these tasks for you. Similarly, you will probably not see
the responses because your software program may intercept them. However,
if you perform data activities directly with your External Modem, you will find
the format for typing External Modem commands and fax/ modem response
helpful.
Using commands, you can have your External Modem perform a variety of
activities, such as dialing or answering a data call or sending a fax. In order
to send commands to your External Modem, you must access the modem in
a terminal mode which is provided by most communication software. To
enter a command line, type:
ATccpp[Enter]
where AT must precede every command line (except when you type the A/
command).
cc any of the commands available, described in succeeding sections.
pp any parameters that is required by the command.
If you make a mistake while typing a command, press the Backspace key to
delete the error.
To make a command line easy to read, you can insert spaces parentheses,
hyphens, and other punctuation in your command line. For example:
AT M3 DT 9, 1(818)555-1234
Your External Modem ignores spaces and punctuation marks when
executing a command line, but these characters apply to the 40 characters
limit.
A command line can contain up to 39 characters. If you want to type more
than 39 characters on a command line, type a regular command line (up to
39 characters long) and end it with a semicolon as the last character. When
you press Enter, your External Modem executes the commands and returns
to command mode, so you can type your next command line.
For your convenience, the last command line you execute remains stored in
the modem's memory until you type a new command line and press the
Enter key. If you want to re-execute the last command, type
A/
The A/ command need not be prefixed by the 'AT' characters or ended with
the [Enter] key.
