On Wed, 20 Aug 2008 21:35:25 +0100, "Benny Prijono" <bennylp at pjsip.org> wrote: >> Right now, I'm using SpanDSP for reading DTMF digits. However, it >> doesn't >> seem to work (no digits are received). Has anyone tried to integrate >> SpanDSP and PJSIP before? >> > Could you explain exactly what you mean by "doesn't work"? I'm sorry, I should have been more clear! When I connect to an Asterisk server, and press the digits on my phone, my application receives the digits properly using the callback I supplied to PJSUA. Now when I disable the callback, and use my own module, nothing happens. I've verified that dtmfdet_put_frame() is called correctly. However, SpanDSP doesn't seem to detect the digits, and the callback function supplied to SpanDSP (dtmfdet_digits_rx()) is never called. While typing this, I realized that something else could be happening: perhaps the DTMF tones generated by my phone aren't in the stream at all. I've Googled this, and found http://www.experts-exchange.com/Networking/Telecommunications/IP_Telephony/Asterisk_/Q_23280368.html. I guess I'll have to record the stream and find out. >> Currently, I'm feeding the samples as-is to SpanDSP, and I'm relying on >> SpanDSP's callback mechanism to receive the digits: >> [snip] >> >> > Not knowing SpanDSP, that looks fine. But perhaps you'd want to handle the > case where frame->type is not FRAME_TYPE_AUDIO (i.e. just ignore them if > it's not audio). Yes, good point, thanks. Regards, Maarten -- Privateer Software Development (www.privateer-software.nl) * web usability, web accessibility, web development * cross-platform software development
