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AT Commands
5-16 Modem 3600
For example, you might enter a dollar amount for a banking transaction
by entering
AT D 1400 ;
This sends the sequence 1400 and then returns to the command mode
for further entries, according to the requirements of the banking service.
Dialing a Stored Telephone Number Sn
To dial one of the previously stored numbers, enter Sn where n
represents a stored telephone number location between 1 and 9.
AT D S9
In this example, the number stored in location 9 is dialed.
Note
DS and DS1 are the same location.
Autodial Number Location *AUn
The *AUn command selects stored number n (n=1 to 9) to be
autodialed. This is the autodial number, which is used for any autodial
application.
Voice Calls
To make a voice call, dial the number with the telephone. To use the dial
command for the call, enter the following dialing sequence:
AT D (number);
The ; modifier recalls the command mode and prevents the modem from
training. The remote site must be answered by the telephone for the
voice call to be successful.
Switching from Voice to Data
After dialing, place the modems at both ends in data mode by pressing
the TALK/DATA button. The *DA1 command can also be used to
change from talk mode to data mode.
Answering A Call
There are three ways to answer a call for a data connection:
• Manually
• AT Command
• Autoanswer