Software Investigate

An Application Router for SIP Servlet Application Composition

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Executive Summary

The SIP servlet standard offers a familiar Java Application Programming Interface (API) for developing Session Initiation Protocol (SIP) applications, and the upcoming version 1.1 specification standardizes how multiple SIP servlet applications are composed and invoked to service a communication episode. Such disciplined composition promotes software modularity and reuse, and also helps manage feature interactions. At the core of the application composition framework in the SIP servlet API 1.1 is the application router that performs the task of selecting an application to service a SIP request.

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