AT Commands

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.

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

 

 

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.

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V.3600

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Motorola V.3600 manual Tone Dialing T, Pulse Dialing P, Insert Long Pause