[Freeswitch-users] Possible to disable core codecs?

[Malay Thakershi]

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 at 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 at 8000h@20i
>
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