Return | Cisco Systems 1.3.0 specs

							Feature Server:		SIP
	SIP Phone	UA Marshal			Redirect Server		Feature Server:	SIP Phone	IP
	SIP Phone	UA Marshal			Redirect Server		Call Return	SIP Phone
							Call Return

	1. INVITE								Phone
	2. 100								Phone
									to
		3.	INVITE						SIP IP
		4.	302						SIP IP
		5.	ACK						Phone:
		6.	INVITE						Phone:
		6.	INVITE						Call
									Call
		7.		100					Return
					8. INVITE

					9.	302
					10. ACK
		11.		INVITE
		12.		100
		13.		INVITE
		14.		302
		15.		ACK

Figure C-21. SIP IP Phone to SIP IP Phone: Call Return — Diagram 1

C-57

Image 113

Cisco Systems 1.3.0 manual Return