;tag=[pid]SIPpTag00[call_number] To: Call-ID: NGCP%[field4 file="callee.csv" line=0]%///[call_id] CSeq: [cseq] INVITE Contact: Max-Forwards: 70 Session-Expires: 20;refresher=uac Min-SE: 2 Content-Type: application/sdp Content-Length: 0 ]]> ;tag=[pid]SIPpTag00[call_number] To: [peer_tag_param] Call-ID: NGCP%[field4 file="callee.csv" line=0]%///[call_id] [routes] CSeq: [cseq] ACK Contact: Max-Forwards: 70 Content-Length: 0 ]]> ;tag=[pid]SIPpTag00[call_number] To: [peer_tag_param] Call-ID: NGCP%[field4 file="callee.csv" line=0]%///[call_id] CSeq: [cseq] INVITE Contact: Max-Forwards: 70 Content-Type: application/sdp Content-Length: 0 ]]> ;tag=[pid]SIPpTag00[call_number] To: [peer_tag_param] Call-ID: NGCP%[field4 file="callee.csv" line=0]%///[call_id] [routes] CSeq: [cseq] ACK Contact: Max-Forwards: 70 Content-Length: 0 ]]> ;tag=[pid]SIPpTag00[call_number] To: [peer_tag_param] Call-ID: NGCP%[field4 file="callee.csv" line=0]%///[call_id] CSeq: [cseq] BYE Contact: [routes] Max-Forwards: 70 Content-Length: 0 ]]>