AT Commands
5-14
V.3600
Use spaces, hyphens, parentheses, or other punctuation, except dial
modifiers, to make the command line easier to read and enter. For
example, these are all treated the same:
AT D 1-800-555-1212
AT D 1 (800) 555-1212
ATD18005551212
The dial modifiers are as follows.
Tone Dialing — T
To tone dial a number sequence, insert a
T
in the dial sequence.
AT D T 323-1111
In this example, the modem tone dials the telephone number. The
dialing method selected remains in effect until changed.
Pulse Dialing — P
To pulse dial a number sequence, insert a
P
in the dial sequence.
AT D P 554-9902
Insert Long Pause — ,
To insert a long pause in the dialing sequence, use a comma. This inserts
a 2 second delay (or the value in register
S8
).
AT D P 9, 1-800-554-1000
Here the modem pulse dials a 9, pauses for the telephone system to
switch to an outside line, then dials the phone number. Comma pauses
may be inserted consecutively if desired.
Command
Operation
T
Tone dialing
P
Pulse dialing
,
Insert a long pause (2 sec or value in S8)
W
Wait for 2nd dial tone
!
Flash (1/2 sec)
R
Switch to answer mode after dialing
;
Return to command mode after dialing
@
Wait for silence
S
Dial stored command line or number
