Cisco Systems 1.3.0 manual SIP Phone to Pstn Call Blocking

SIP Phone to PSTN: Call Blocking

SIP Phone to PSTN: Call Blocking

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

•User A initiates a long distance or 1-900 number call

•The VOCAL System blocks the call

		VOCAL System
	Redirect Server
			PSTN
User Agent	Call Blocking	Gateway	Gateway
Marshal Server	Feature Server	Marshal Server
User A			1-900
Calling Party			Called Party

Figure C-18. SIP IP Phone to Phone: Call Blocking

Call Flow Diagram Figure C-19shows a call, originating from an on-network SiP IP phone, being blocked by the feature server.

C-51