;tag=[pid]SIPpTag00[call_number] To: Call-ID: [call_id] CSeq: [cseq] INVITE P-Early-Media: supported Supported: timer Contact: Content-Type: application/sdp Content-Length: [len] v=0 o=- 2890844526 2890844526 IN IP[local_ip_type] [local_ip] s=- c=IN IP[media_ip_type] [media_ip] t=0 0 m=audio 6065 RTP/AVP 121 a=rtpmap:121 wuff/8000 m=video [media_port] RTP/AVP 34 ]]>