Voice Over IP

CALL AGENTS AND CALLS

Call Agents use configuration databases to keep track of trunk groups and circuits within the trunk. We just learned that the Gateway is identified by a domain name. In addition, each physical interface is also identified by a name. The physical circuit is further identified by a circuit member, which is concatenated to the name to identify unambiguously a specific circuit.

Each call that is managed by the Call Agent must be identified with a name, which is created by the Call Agent. Call identifiers are important not just for the call, but for accounting purposes as well. The use of a domain name is quite important to this architecture. By the use of this name, instead of the address, components can be easily moved across ...