Hello, I have installed freeSwitch 1.1beta from the git repository (FreeSWITCH-mod_sofia/1.1.beta1-git-d2edcad 2012-03-31 23-42-27 +0000). I have enabled iLBC@30i codec by setting global vars: <X-PRE-PROCESS cmd="set" data="global_codec_prefs=G7221@32000h,G7221@16000h,G722,PCMU,PCMA,GSM,iLBC@30i,SILK,G729"/> <X-PRE-PROCESS cmd="set" data="outbound_codec_prefs=PCMU,PCMA,GSM,iLBC@30i,SILK,G729"/> I try to call from Bria for iPhone to x-Lite 4.1. Bria offers iLBC@30i: 2012-04-20 00:24:03.740477 [NOTICE] switch_channel.c:926 New Channel sofia/internal/1001@sukmad.dyndns-home.com [624007f0-d580-4500-834f-76c2ba578df0] 2012-04-20 00:24:03.740477 [DEBUG] switch_core_state_machine.c:362 (sofia/internal/1001@sukmad.dyndns-home.com) Running State Change CS_NEW 2012-04-20 00:24:03.740477 [DEBUG] switch_core_state_machine.c:380 (sofia/internal/1001@sukmad.dyndns-home.com) State NEW 2012-04-20 00:24:03.740477 [DEBUG] sofia.c:5561 Channel sofia/internal/1001@sukmad.dyndns-home.com entering state [received][100] 2012-04-20 00:24:03.740477 [DEBUG] sofia.c:5572 Remote SDP: v=0 o=- 3543863125 3543863125 IN IP4 88.9.239.104 s=cpc_med c=IN IP4 88.9.239.104 t=0 0 m=audio 17002 RTP/AVP 112 18 105 101 c=IN IP4 88.9.239.104 a=rtpmap:112 SILK/8000 a=rtpmap:18 G729/8000 a=fmtp:18 annexb=no a=rtpmap:105 iLBC/8000 a=fmtp:105 mode=30 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-15 But FS set the codec to iLBC 98 (according to vars.xml, it corresponds to iLBC@20i): 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [SILK:112:8000:20:0]/[G7221:115:32000:20:48000] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [G729:18:8000:20:8000]/[G7221:115:32000:20:48000] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [iLBC:105:8000:30:0]/[G7221:115:32000:20:48000] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [telephone-event:101:8000:20:0]/[G7221:115:32000:20:48000] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:5016 Set 2833 dtmf send/recv payload to 101 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [SILK:112:8000:20:0]/[G7221:107:16000:20:32000] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [G729:18:8000:20:8000]/[G7221:107:16000:20:32000] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [iLBC:105:8000:30:0]/[G7221:107:16000:20:32000] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [telephone-event:101:8000:20:0]/[G7221:107:16000:20:32000] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:5016 Set 2833 dtmf send/recv payload to 101 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [SILK:112:8000:20:0]/[G722:9:8000:20:64000] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [G729:18:8000:20:8000]/[G722:9:8000:20:64000] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [iLBC:105:8000:30:0]/[G722:9:8000:20:64000] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [telephone-event:101:8000:20:0]/[G722:9:8000:20:64000] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:5016 Set 2833 dtmf send/recv payload to 101 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [SILK:112:8000:20:0]/[PCMU:0:8000:20:64000] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [G729:18:8000:20:8000]/[PCMU:0:8000:20:64000] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [iLBC:105:8000:30:0]/[PCMU:0:8000:20:64000] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [telephone-event:101:8000:20:0]/[PCMU:0:8000:20:64000] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:5016 Set 2833 dtmf send/recv payload to 101 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [SILK:112:8000:20:0]/[PCMA:8:8000:20:64000] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [G729:18:8000:20:8000]/[PCMA:8:8000:20:64000] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [iLBC:105:8000:30:0]/[PCMA:8:8000:20:64000] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [telephone-event:101:8000:20:0]/[PCMA:8:8000:20:64000] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:5016 Set 2833 dtmf send/recv payload to 101 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [SILK:112:8000:20:0]/[GSM:3:8000:20:13200] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [G729:18:8000:20:8000]/[GSM:3:8000:20:13200] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [iLBC:105:8000:30:0]/[GSM:3:8000:20:13200] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [telephone-event:101:8000:20:0]/[GSM:3:8000:20:13200] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:5016 Set 2833 dtmf send/recv payload to 101 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [SILK:112:8000:20:0]/[iLBC:98:8000:20:15200] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [G729:18:8000:20:8000]/[iLBC:98:8000:20:15200] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:4895 Audio Codec Compare [iLBC:105:8000:30:0]/[iLBC:98:8000:20:15200] 2012-04-20 00:24:03.740477 [DEBUG] sofia_glue.c:3006 Set Codec sofia/internal/1001@sukmad.dyndns-home.com iLBC/8000 20 ms 160 samples 15200 bits 2012-04-20 00:24:03.740477 [DEBUG] switch_core_codec.c:111 sofia/internal/1001@sukmad.dyndns-home.com Original read codec set to iLBC:98 I'm trying to fix the codec in the dialplan by setting absolute_codec_string channel variable: Dialplan: sofia/internal/1001@sukmad.dyndns-home.com Action hash(insert/${domain_name}-call_return/${dialed_extension}/${caller_id_number}) Dialplan: sofia/internal/1001@sukmad.dyndns-home.com Action hash(insert/${domain_name}-last_dial_ext/${dialed_extension}/${uuid}) Dialplan: sofia/internal/1001@sukmad.dyndns-home.com Action set(called_party_callgroup=${user_data(${dialed_extension}@${domain_name} var callgroup)}) Dialplan: sofia/internal/1001@sukmad.dyndns-home.com Action hash(insert/${domain_name}-last_dial_ext/${called_party_callgroup}/${uuid}) Dialplan: sofia/internal/1001@sukmad.dyndns-home.com Action hash(insert/${domain_name}-last_dial_ext/global/${uuid}) Dialplan: sofia/internal/1001@sukmad.dyndns-home.com Action hash(insert/${domain_name}-last_dial/${called_party_callgroup}/${uuid}) Dialplan: sofia/internal/1001@sukmad.dyndns-home.com Action bridge({absolute_codec_string='iLBC@30i,G729'}user/${dialed_extension}@${domain_name}) Dialplan: sofia/internal/1001@sukmad.dyndns-home.com Action answer() When FS rings in the B-leg, I think it sends an incorrect codec (mode=20) 2012-04-20 00:24:04.170478 [DEBUG] mod_sofia.c:2582 Ring SDP: v=0 o=FreeSWITCH 1334863010 1334863011 IN IP4 88.9.239.104 s=FreeSWITCH c=IN IP4 88.9.239.104 t=0 0 m=audio 11234 RTP/AVP 105 101 a=rtpmap:105 iLBC/8000 a=fmtp:105 mode=20 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=silenceSupp:off - - - - a=ptime:20 a=sendrecv When I try to answer in B-leg (x-Lite softphone) it offers iLBC 98 (30 ms): 2012-04-20 00:24:13.750480 [DEBUG] switch_core_session.c:877 Send signal sofia/internal/sip:1002@192.168.0.2:3348 [BREAK] 2012-04-20 00:24:13.750480 [DEBUG] switch_core_session.c:877 Send signal sofia/internal/sip:1002@192.168.0.2:3348 [BREAK] 2012-04-20 00:24:13.750480 [DEBUG] sofia.c:5561 Channel sofia/internal/sip:1002@192.168.0.2:3348 entering state [completing][200] 2012-04-20 00:24:13.750480 [DEBUG] sofia.c:5572 Remote SDP: v=0 o=- 1334874336856091 1 IN IP4 192.168.1.2 s=CounterPath X-Lite 4.1 c=IN IP4 192.168.1.2 t=0 0 m=audio 54624 RTP/AVP 98 101 a=rtpmap:98 iLBC/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-15 and the call ends with the following error: 2012-04-20 00:24:13.800478 [DEBUG] switch_core_session.c:793 Send signal sofia/internal/1001@sukmad.dyndns-home.com [BREAK] 2012-04-20 00:24:13.810479 [DEBUG] switch_core_io.c:1095 Engaging Write Buffer at 320 bytes to accommodate 480->320 2012-04-20 00:24:13.980477 [WARNING] mod_sofia.c:1158 Asynchronous PTIME not supported, changing our end from 20 to 30 2012-04-20 00:24:13.980477 [DEBUG] sofia_glue.c:2924 Changing Codec from iLBC@20ms@8000hz to iLBC@30ms@8000hz 2012-04-20 00:24:14.020479 [WARNING] switch_core_codec.c:691 Codec iLBC Exists but not at the desired implementation. 8000hz 30ms 2012-04-20 00:24:14.020479 [ERR] sofia_glue.c:2954 Can't load codec? 2012-04-20 00:24:14.020479 [DEBUG] switch_channel.c:2848 (sofia/internal/1001@sukmad.dyndns-home.com) Callstate Change ACTIVE -> HANGUP 2012-04-20 00:24:14.020479 [NOTICE] sofia_glue.c:2955 Hangup sofia/internal/1001@sukmad.dyndns-home.com [CS_EXECUTE] [INCOMPATIBLE_DESTINATION] Is it possible to re-packetize iLBC streams from iLBC@20i to iLBC@30i?. Why FS choose an incorrect packet time?. I have read about this problem in Internet and I try to uncomment the following line: <param name="rtp-autofix-timing" value="false"/> But when I try to make the call I don't hear nothing (except a big noise)... There are any solution?. I attach all the dump from fs_cli. Thanks in advance. Regards.