Cisco/SPA122-1.3.5(004p)

SIP/2.0 404 Not Found
To: <sip:nm2@nm2>;tag=21ccc0ed13fb37ddi0
From: <sip:nm@nm>;tag=root
Call-ID: 50000
CSeq: 42 OPTIONS
Via: SIP/2.0/UDP nm;branch=foo;received=224.73.30.3;rport=26810
Server: Cisco/SPA122-1.3.5(004p)
Content-Length: 0

HTTP/1.1 200 Ok
Server: httpd
Date: Fri, 27 Feb 1970 17:56:46 GMT
Cache-Control: no-cache
Pragma: no-cache
Expires: 0
Content-Type: text/html
Connection: close