Hi All, I have code that worked with G711 but crash with GSM. I am using the regular codec frame work and changes only three lines: pjmedia_codec_info codecs; codecs.encoding_name = pj_str("GSM");//pj_str("PCMU") - CHANGE codecs.pt = PJMEDIA_RTP_PT_GSM ;//PJMEDIA_RTP_PT_PCMU - CHANGE codecs.type = PJMEDIA_TYPE_AUDIO; codecs.clock_rate = 8000; codecs.channel_cnt = 1; status = pjmedia_codec_mgr_alloc_codec(codec_mgr, &codecs,&_codec); //OK!!! For encoding: pjmedia_codec_encode ( _codec, &_in_frame,FRAME_SIZE, &_out_frame1); Here I changed FRAME_SIZE from 160 to 33 and it crash! - no error, simply crash. Please advice, Thanks, Dan -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20151021/7400a98c/attachment.html>