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Cisco Systems 1.3.0 Manual De Usuario

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C-16 
SIP IP Phone to Analog Phone via Gateway
SIP IP Phone to Analog Phone via Gateway
Call Scenario
Figure C-7 illustrates a SIP phone to analog phone call made over an IP 
network via a gateway.
Figure C-7. SIP IP Phone to Analog Phone via Gateway
Call Flow Diagram
Figures C-8 and C-9 show a call originating from an on-network SIP phone 
and being routed through a gateway to the PSTN.
Gateway
SIP Phone
PSTN
Calling Party
Analog Phone
Called Party
Redirect Server
User Agent 
Gateway
Marshal Server
Marshal Server
VOCAL System