[Freeswitch-users] codec inheritance in 3pcc mode

Serge S. Yuriev me at nevian.org
Fri Nov 6 19:18:26 MSK 2015


Our PBX sending INVITEs w/o SDP so we set enable 3pcc=proxy
In dialplan I have set inherit_codec=true

We receive from peer:

    m=audio 43512 RTP/AVP 18 101
    a=rtpmap:18 G729/8000
    a=fmtp:18 annexb=no
    a=rtpmap:101 telephone-event/8000
    a=fmtp:101 0-15

But FS refuses to send this to Caller

2015-11-06 19:00:06.331944 [DEBUG] switch_ivr_originate.c:416 Codec 
string G729 at 8000h@20i not supported on sofia/internal/12550 at, 
skipping inheritance

But why while there is no SDP from A side? PBX definitely supports G729.

Serge S. Yuriev
Lead VoIP engineer

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