[Freeswitch-users] Polycom G722 negotiation

[Spencer Thomason]

freeswitch at internal> version
FreeSWITCH Version 1.0.head (hacked-20110223T050150Z)


On Feb 25, 2011, at 4:18 PM, Brian West wrote:

> What version of FreeSWITCH are you running?
>
> /b
>
> On Feb 24, 2011, at 11:45 PM, Spencer Thomason wrote:
>
>> Hello all,
>> I have several Polycom IP-650s.  On the external profile I have:
>> CODECS IN        	G722,PCMU,G729,GSM
>> CODECS OUT       	PCMU,G729
>>
>> On the internal profile I have
>> CODECS IN        	G722,PCMU,G729,GSM
>> CODECS OUT       	G722,PCMU,G729,GSM
>>
>> The Polycoms have a similar codec priority set:
>> v=0
>> o=- 1167611879 1167611879 IN IP4 10.59.1.243
>> s=Polycom IP Phone
>> c=IN IP4 10.59.1.243
>> t=0 0
>> a=sendrecv
>> m=audio 2236 RTP/AVP 9 0 18 101
>> a=rtpmap:9 G722/8000
>> a=rtpmap:0 PCMU/8000
>> a=rtpmap:18 G729/8000
>> a=fmtp:18 annexb=yes
>> a=rtpmap:101 telephone-event/8000
>>
>> The issue I have is that if I leave the internal profile to  
>> generous and a user places a call from the PSTN on hold which is  
>> PCMU, when the user tries to pick up the call, the Polycoms'  
>> preference then changes the call to G722 and there is no audio.  If  
>> I set the profile to greedy, since the call is already PCMU  
>> Freeswitch keeps it at PCMU and audio is fine.  I realize this is  
>> the intended behavior for greedy vs generous but my question is why  
>> is there no audio when switching the codecs?  I didn't want to  
>> clutter this up any more but I'm happy to provide traces however  
>> the only real difference is the codec order.
>>
>> Thanks,
>> Spencer
>
>
> _______________________________________________
> FreeSWITCH-users mailing list
> FreeSWITCH-users at lists.freeswitch.org
> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
> http://www.freeswitch.org
>