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AT Commands
5-14 Modem 3600
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.
Wait for Second Dial Tone W
To wait for second dial tone insert a W in the dialing sequence.
AT D 9 W 323-8000
Instead of using a comma pause for an outside line, wait up to 30
seconds (time specified by S7) for a second dial tone.
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