Cisco Systems 1.3.0 manual Figure C-27. User Agent to User Agent Call Waiting Diagram

VOCAL User Agent		UA Marshal		Redirect Server	VOCAL User Agent	VOCAL User Agent	User
		16.	INVITE				Agent
		17.	100				to
		18.	INVITE				User
		19.	302				Agent:
		20.	ACK
							Call
		21.	INVITE
							Waiting
		22.	302
		23.	ACK
		24.	INVITE
		25.	180
26. INVITE
27.	200
		28.	200
		29.	200
		30.	ACK
		31.	ACK

Figure C-27. User Agent to User Agent: Call Waiting — Diagram 2

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