[Freeswitch-users] Codec Negotiation: Codec telephone-event:101:8000:20

Mark Campbell-Smith mcampbellsmith at gmail.com
Tue Jan 5 21:40:10 PST 2010


Thanks Brian and Anthony.

Brian: 2 = G723-32 Do you mean G721 instead of G723-32 ?

2010-01-05 18:57:56.845029 [DEBUG] sofia_glue.c:3306 Audio Codec
Compare [G721:2:8000:20]/[G726-32:2:8000:20]

So the only codec they have offered is G723-32 (or G721), which FS
only supports as a passthrough codec.  Is that correct?


On Wed, Jan 6, 2010 at 4:20 PM, Anthony Minessale
<anthony.minessale at gmail.com> wrote:
> those are not audio codecs CN is just comfort noise and telephone-event is
> dtmf
>
>
> On Tue, Jan 5, 2010 at 11:03 PM, Mark Campbell-Smith
> <mcampbellsmith at gmail.com> wrote:
>>
>> ahh... thats what I thought originally.
>>
>> So what codecs match CN and telephony-event?  Where can I find these
>> mappings?
>>
>> m=audio 47904 RTP/AVP 2 101 13
>>
>> Audio Codec Compare [telephone-event:101:8000:20]/[PCMA:8:8000:20]
>> Audio Codec Compare [CN:13:8000:20]/[G726-32:2:8000:20]
>>
>> Thanks Brian!
>>
>> On Wed, Jan 6, 2010 at 3:20 PM, Brian West <brian at freeswitch.org> wrote:
>> > Lets try this again.. THIS SDP IS NOT from FreeSWITCH its an inbound
>> > invite to FreeSWITCH... fix that and you'll be golden.
>> >
>> > /b
>> >
>> > On Jan 5, 2010, at 9:36 PM, Mark Campbell-Smith wrote:
>> >
>> >> 2010-01-05 18:57:56.845029 [DEBUG] sofia.c:3845 Remote SDP:
>> >> v=0
>> >> o=Sippy 257534956 1 IN IP4 80.232.37.178
>> >> s=-
>> >> t=0 0
>> >> m=audio 47904 RTP/AVP 2 101 13
>> >> c=IN IP4 213.50.90.3
>> >> a=rtpmap:101 telephone-event/8000
>> >> a=fmtp:101 0-15
>> >
>> >
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>
>
> --
> Anthony Minessale II
>
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