Cisco Systems 1.3.0 manual Phone

C-36

SIP Phone		UA Marshal		Redirect Server	Feature Server:	FAC	SIP Phone	SIP
								IP
1. INVITE								Phone
2. 100
								to
		3.	INVITE					SIP IP
		4.	302
		5.	ACK					Phone:
		6.	INVITE
								Forward
		7.	100
		8.	302					All
		9.	ACK					Calls
10.	302
11. ACK
12. INVITE
13.	100
		14. INVITE
		15. 302

Figure C-14. Call Flow Diagram: SIP IP Phone to SIP IP Phone: Forward All Calls — Diagram 1