SIP/2.0 200 OK
Via: SIP/2.0/UDP nm;branch=foo;rport
CSeq: 42 OPTIONS
Content-Length: 0
Call-ID: 50000
To: <sip:nm2@nm2>
Contact: <sip:nm2@220.179.249.21;transport=udp>
Organization: ValueHD Corporation
From: <sip:nm@nm>;tag=root
User-Agent: VHD/V2.2.1-181229.0950
