hi any of them know how to implement dtmf in iphone application. thanks in advance.
+1
A:
You couldn't just do a Google search? The first result for "iPhone DTMF" returns this Google Code project called iPhreak which should include what you're looking for.
Martin Gordon
2010-05-13 19:28:24
yes, i got that, but it is runnable state, help me
Jeevanantham
2010-05-14 04:31:30
A:
Generating DTMF is easy - you just need to generate two sinusoids at the appropriate frequencies.
Decoding DTMF is a little harder, but it can be implemented using a pair of Goertzel filters.
Paul R
2010-05-13 19:40:08