Cisco Systems 1.3.0 manual Phone to

C-60

SIP Phone		UA Marshal		Redirect Server	Feature Server:	SIP Phone	SIP
							IP
					Call Return
48.	180						Phone to
		49.	180
50.	200						SIP
							IP
		51.	200				Phone:
		52.	ACK
53.	ACK						Call
54.	BYE						Return
		55.	BYE
		56.	200
57.	200

Figure C-24. SIP IP Phone to SIP IP Phone: Call Return — Diagram 4