;tag=[pid]SIPpTag00[call_number] To: Call-ID: NGCP%[field4 file="callee.csv" line=0]%///[call_id] CSeq: 1 REGISTER Contact: sip:[field0 file="callee.csv" line=0]@@[local_ip]:[local_port] Expires: 600 Max-Forwards: 70 Content-Length: 0 ]]> ;tag=[pid]SIPpTag00[call_number] To: Call-ID: NGCP%[field4 file="callee.csv" line=0]%///[call_id] CSeq: 2 REGISTER [field2 file="callee.csv" line=0] Contact: sip:[field0 file="callee.csv" line=0]@@[local_ip]:[local_port] Expires: 600 Max-Forwards: 70 Content-Length: 0 ]]>