Cisco Systems 1.3.0 manual Phone to SIP Phone via Gateway Call Screening

Phone to SIP Phone via Gateway: Call Screening

Phone to SIP Phone via Gateway: Call Screening

Call Scenario Figure C-16illustrates the following call scenario:

•User A initiates a call to User B

•User B has call screening enabled

•The feature server screene the call and returns a forbidden call message back to the gateway.

		VOCAL System
		Redirect Server
PSTN
Gateway	Gateway	Call Screening	User Agent
	Marshal Server	Feature Server	Marshal Server
User A			User B
Calling Party			Called Party
			(Screening)

Figure C-16. SIP IP Phone to Phone: Call Screening

Call Flow Diagram Figure C-17shows a call, originating from an on-network SIP IP phone, being screened by the feature server.

C-45