Hi,Can anyone help regarding generating tone based on frequency modulation and frequency conjugation?????? pjmedia_tone_desc tones[1]; tones[0].freq1 = 200; tones[0].freq2 = 0; tones[0].on_msec = ON_DURATION; tones[0].off_msec = OFF_DURATION;?status = pjmedia_tonegen_play(port, 1, tones, 0); Here 'freq2' is frequency which is used only if 'freq1' is wrong..ON_DURATION & OFF-DURATION refers to time in ms?unto?which tone should be on and off respectively... Now i want that when i provide 2 frequencies it should do modulation(*) and/or conjugation(+) and generate ring accordingly!! Can anybody help with it???????It is same as generation of various tone like dial tone,busy tone,error tone....etc Thanks,Vikas Khanna. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20111115/e4ecb248/attachment.html>