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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 fax/modem, you will find the
format for typing fax/modem commands and fax/ modem response helpful.
Using commands, you can have your fax/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 fax/modem, you
must access the modem in a terminal mode which is provided by most communication software.
To enter a command line, type:
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 fax/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 fax/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
The A/ command need not be prefixed by the 'AT' characters or ended with the [Enter] key.
NOTE:
The fax/modem command and response set are described in the text file, AT_CMD.TXT, in the
fax/modem Windows95 driver diskette. You can use DOS EDIT or any suitable editor to view this
file.
If a command requires a parameter such as 0 and 1, the parameter is identified as n in the left
column and described in the right column of the AT_CMD.TXT file.
IMPORTANT:
Each command, except for '+++' and 'A/', must be preceded by 'AT' and executed when you
press the [Enter] key. To review the format used to send fax/modem commands, refer to Section
of this manual.
ATccpp[Enter]
A/
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