SIP/2.0 200 OK
Via:      SIP/2.0/UDP c.bell-tel.com
From:     A. Bell <sip:a.g.bell@bell-tel.com>;tag=3
To:       T. Watson <sip:t.watson@ieee.org>;tag=35253448
Call-ID:  31415@c.bell-tel.com
CSeq:     2 BYE