Cisco Systems 1.3.0 manual Cancel

C-58

					Feature Server:		SIP
SIP Phone		UA Marshal		Redirect Server		SIP Phone	IP
					Call Return
		16.	INVITE				Phone
		17.	100
							to
		18.	180				SIP IP
		19.	180
		20.	180				Phone:
21.	180						Call
22. CANCEL							Return
23.	200
		24.	CANCEL
		25.	200
		26.	CANCEL
		27.	200
		28.	CANCEL
		29.	200
		30.	INVITE
		31.	100

Figure C-22. SIP IP Phone to SIP IP Phone: Call Return — Diagram 2