[Freeswitch-users] mod_sofia.c:2219 CODEC NEGOTIATION ERROR

Dear All ; many thanks in advance for your help. I have problem of CODEC NEGOTIATION in my freeswitch installed on Raspberry PI board. following is logs I have : 2014-11-23 16:52:16.832177 [ERR] mod_sofia.c:2219 CODEC NEGOTIATION ERROR. SDP:v=0o=- 3625750336 3625750336 IN IP4 192.168.1.5s=pjmediac=IN IP4 192.168.1.5t=0 0m=audio 4006 RTP/AVP 99 0 8 101c=IN IP4 192.168.1.5a=rtpmap:99 SILK/24000a=fmtp:99 useinbandfec=0a=rtpmap:0 PCMU/8000a=rtpmap:8 PCMA/8000a=rtpmap:101 telephone-event/8000a=fmtp:101 0-16a=rtcp:4007 IN IP4 192.168.1.5 freeswitch@internal> versionFreeSWITCH Version 1.5.15b+git~20141024T202644Z~12b6940644~32bit (git 12b6940 2014-10-24 20:26:44Z 32bit)