[pjsip] Tone detection

Jose Suarez jsuarez at padirac.com.ar
Mon Aug 10 12:19:17 EDT 2009

Hi All,
I'd like to know how to detect a tone using PJSUA. I'm developing a dialer and when it makes a call and play a message I want to detect during the playing of the message a voice mail tone, that tone has the following specification:
Frequency: 875
Desviation: 5
It's a Single Tone.

Do you know how Can I do to create this tone and to detect it?

Thanks in advance,
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