Cisco Systems 1.3.0 manual SIP Phone to Phone via Gateway Called Party is Busy, Call Scenario

SIP Phone to Phone via Gateway: Called Party is Busy

SIP Phone to Phone via Gateway: Called Party is Busy

Call Scenario Figure C-10illustrates User A initiating a call to User B while User B is busy.

	VOCAL System
	Redirect Server
		PSTN
User Agent	Gateway	Gateway
Marshal Server	Marshal Server
User A		User B
Calling Party		(Busy)

Figure C-10. SIP Phone to Phone: Called Party is Busy

Call Flow Diagram Figures C-11and C-12shows a call originating from an on-network SIP phone, being routed through a gateway to the PSTN, and returning a busy signal.

C-26