SIP Method : 180 Ringing

[ Line 1  ] SIP/2.0 180 Ringing

[ Line 2  ] Via: SIP/2.0/UDP 192.168.1.15:5060;branch=z9hG4bK3298736468smg;transport=UDP

[ Line 3  ] To: <sip:+10123456789@ims.sharetechnote.com>;tag=123456789

[ Line 4  ] From: <sip:+11234567890@ims.sharetechnote.com>;tag=659747293

[ Line 5  ] Max-Forwards: 70

[ Line 6  ] Contact: <sip:+10123456789@192.168.1.2:5060;transport=udp>

[ Line 7  ] Call-ID: 131949458@192.168.1.15

[ Line 8  ] Record-Route: <sip:192.168.1.2:5060;lr>

[ Line 9  ] CSeq: 1 INVITE

[ Line 10 ] Content-Length: 0