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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