Hi Alex, On 19-Dec-11 15:20, Alex Balashov wrote: > On 12/19/2011 09:13 AM, Alain Totouom wrote: > >> PTIME = 20? > > Yep. > >> After pjmedia_splitcomb_create_rev_channel what does >> conf_port->info.bytes_per_frame says? 320? > > Indeed. > >> pjmedia_frame to be written to the rev port pjmedia_frame::size == >> 320? PCM 16bit ;o) > > No, sorry, it's 160. > That is the troublemaker. Your problem might already has been solved by now. The decoded PCM your are passing to the bridge is 16 bit and your RTP 8 bit therefor adjust your frame size before passing it to the reverse port .. pcm_frame.size = rtp_payload_size * sizeof(unsigned short); /* 320 */ pjmedia_port_put_frame(conf_port, &pcm_frame); Cheers, Alain -- "" (o)(o) _____o00o__(__)__o00o_____ 3072D/146D10DE 2011-09-29 Alain Totouom <totouom at gmx.de> PGP Fingerprint 39A4F092 FFA7C746 CC305CB0 69091911 146D10DE