Understood your point about G722. But if my list has GSM at higher priority over PCMU/PCMA and far-end SDP supports GSM then why isn't the call using GSM? I don't know where G726 comparisons are coming from. If I haven't mentioned it in vars.xml and far-end SDP doesn't support it then why would it even consider that codec? Thanks. Malay On Wed, Apr 11, 2012 at 12:53 PM, Paul Cupis <paul@cupis.co.uk> wrote:
On 11/04/12 00:12, Malay Thakershi wrote:
Thanks for information.
But I am not able to use any other codec than PCMU/PCMA for some reason. I read related settings and what they mean.
I am using Vitelity for now and they say they do support G722/GSM/G729 on their end.
The far-end SDP says it supports PCMU/PCMA/GSM/G729 only, no G722.
In vars.xml, I have <X-PRE-PROCESS cmd="set" data="global_codec_prefs=G722,GSM,PCMU,PCMA"/> <X-PRE-PROCESS cmd="set" data="outbound_codec_prefs=G722,GSM,PCMU,PCMA"/>
The only matching codecs are PCMA/PCMU/GSM from what you've shown us. You have some G726 comparisons in your log as well, but you've not mentioned G726 at all.
2012-04-10 18:00:17.430961 [DEBUG] sofia.c:5572 Remote SDP: v=0 o=root 15681 15681 IN IP4 IP2 s=session c=IN IP4 IP2 t=0 0 m=audio 12860 RTP/AVP 0 8 3 18 101 a=rtpmap:0 PCMU/8000 a=rtpmap:8 PCMA/8000 a=rtpmap:3 GSM/8000 a=rtpmap:18 G729/8000 a=fmtp:18 annexb=no a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=silenceSupp:off - - - - a=ptime:20
Audio Codec Compare [G729:18:8000:20:8000]/[LPC:7:8000:90:2400] Audio Codec Compare [telephone-event:101:8000:20:0]/[LPC:7:8000:90:2400] Set 2833 dtmf send/recv payload to 101 Audio Codec Compare [PCMU:0:8000:20:64000]/[G726-16:124:8000:20:16000] Audio Codec Compare [PCMA:8:8000:20:64000]/[G726-16:124:8000:20:16000] Audio Codec Compare [GSM:3:8000:20:13200]/[G726-16:124:8000:20:16000] Audio Codec Compare [G729:18:8000:20:8000]/[G726-16:124:8000:20:16000] Audio Codec Compare [telephone-event:101:8000:20:0]/[G726-16:124:8000:20:16000] Set 2833 dtmf send/recv payload to 101 Audio Codec Compare [PCMU:0:8000:20:64000]/[AAL2-G726-16:124:8000:20:16000] Audio Codec Compare [PCMA:8:8000:20:64000]/[AAL2-G726-16:124:8000:20:16000] Audio Codec Compare [GSM:3:8000:20:13200]/[AAL2-G726-16:124:8000:20:16000] Audio Codec Compare [G729:18:8000:20:8000]/[AAL2-G726-16:124:8000:20:16000] Audio Codec Compare [telephone-event:101:8000:20:0]/[AAL2-G726-16:124:8000:20:16000] Set 2833 dtmf send/recv payload to 101 Audio Codec Compare [PCMU:0:8000:20:64000]/[PCMA:8:8000:20:64000] Audio Codec Compare [PCMA:8:8000:20:64000]/[PCMA:8:8000:20:64000] Bah HUMBUG! Sticking with PCMA@8000h@20i
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