BYE sip:anonymous@10.8.0.174:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.0.220:5060;rport;branch=z9hG4bK29047
From: <sip:10007@192.168.0.220:5060;line=573273a9135b13e>;tag=16142
To: "Anonymous" <sip:anonymous@anonymous.invalid>;tag=as49499d01
Call-ID: 17772bc65156bc5d2d5dcf016c772d46@10.8.0.174:5060
CSeq: 2 BYE
Contact: <sip:10007@192.168.0.220:5060>
Max-Forwards: 70
User-Agent: 2N Helios IP Vario 2.9.0.18.5
Content-Length: 0