HTTP/1.0 200 OK
Date: Fri Mar 26 16:45:48 2010
Server: GoAhead-Webs/2.5.0
Pragma: no-cache
Cache-Control: no-cache, must-revalidate
Expires: Sat, 1 Jan 2005 00:00:00 GMT
Content-type: text/html

VPN (IKE)

Initiator SPI: 7568696d77377579
Responder SPI: 37786c326c633668
Next Payload: RESERVED
Version: 2.0
Exchange Type: DOI Specific Use
Flags:
    Encryption:     False
    Commit:         False
    Authentication: False
Message ID: 00000000
Length: 36

SIP/2.0 200 OK
Via: SIP/2.0/UDP nm;branch=foo;rport=26810;received=224.220.42.33
From: <sip:nm@nm>;tag=root
To: <sip:nm2@nm2>;tag=93948424
Call-ID: 50000
CSeq: 42 OPTIONS
Content-Type: application/sdp
Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, NOTIFY, PRACK, UPDATE, REFER
Content-Length:   311

v=0
o=ipr 123456 654321 IN IP4 192.168.15.100
s=Radio Over IP Session
c=IN IP4 192.168.15.100
t=0 0
a=sendrecv
m=audio 8098 RTP/AVP 0 8 2 3 97
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:2 G726-32/8000
a=rtpmap:3 GSM/8000
a=rtpmap:97 telephone-event/8000
a=fmtp:97 0-16, 144-159
a=ptime:20