Звонок выглядит так:
SIP/SDP Request: INVITE sip:*******4800@*******208.10, with session description
SIP Status: 181 Call Is Being Forwarded
SIP/SDP Status: 183 Session Progress, with session description
RTP PT=ITU-T G.711 PCMA, SSRC=0x1FEDBA46, Seq=30782, Time=179360
RTP PT=ITU-T G.711 PCMA, SSRC ...