Example

Scenario : U1 -> P1 -> P2 -> U2
U1 -> P1
INVITE sip:callee@domain.com SIP/2.0
Contact: sip:caller@u1.example.com
P1 = outbound proxy, DNS을 이용하여 Record-Route 을 삽입
P1 -> P2
INVITE sip:callee@domain.com SIP/2.0
Contact: sip:caller@u1.example.com
Record-Route:

P2 -> U2 (Location server 이용)
INVITE sip:callee@u2.domain.com SIP/2.0
Contact: sip:caller@u1.example.com
Record-Route:
Record-Route:

Callee가 request을 받고 200 OK 송신
SIP/2.0 200 OK
Contact: sip:callee@u2.domain.com
Record-Route:
Record-Route:

U2 : dialog state 유지
Remote target : sip:caller@u1.example.com
Route : (,)

U1 response을 수신하고 dialog state 유지
Remote target : sip:caller@u2.example.com
Route : ,

U1이 BYE request 송신
BYE sip:callee@u2.domain.com SIP/2.0
Route: ,

P1 -> P2
BYE sip:callee@u2.domain.com SIP/2.0
Route:

P2 -> U@
BYE sip:callee@u2.domain.com SIP/2.0