see:
http://www.rt66.com/dthomas/pic/dtmf.txt

and other links at

http://204.210.50.240/techref/default.asp?url=pots.htm under "See also" and
"DTMF"

James Newton mailto:jamesnewton@geocities.com phone:1-619-652-0593
http://techref.homepage.com NOW OPEN (R/O) TO NON-MEMBERS!
Members can add private/public comments/pages ($0 TANSTAAFL web hosting)
PICLIST guide: http://204.210.50.240/techref/default.asp?url=piclist.htm


-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Duilio Foschi
Sent: Sunday, October 24, 1999 11:56 AM
To: PICLIST@MITVMA.MIT.EDU
Subject: send DTMF tones


Using an external modem, I need to do the following things:

1. dial a number
2. detect if the call is answered
3. send DTMF tones to the remote phone

I can do 1. with the command ATDT...
I can do 2. detecting when the ringback signal stops

I don't know how to do 3.

Any hint ?

Thank you

Duilio Foschi