The voice data encapsulation policy is: for voice data entering Ethernet from PSTN and exchanging among Ethernet, MAC address is acted as addressingobject when voice data is encapsulated;
The WS-Addressing session model provides coupling between the Web service endpoint information and the session data, which is analogous to object references in distributed object systems.
At the core of WS-Addressing is an object known as an EndpointReference, which serves as a reference to and a description of a specific Web service instance.