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Next generation telephony applications will be based on Sip Servlet. The execution environment for such applications is the Sip Servlet Container.
Today, there are a number of commercial and open source J2EE containers that have been extended to support the specific requirements for Sip Servlets. The extension of the J2EE container to support Sip Servlets allows application developers to “enjoy” a very wide set of services starting from simple services as redundant database connections up to very complicated services among them transaction support, clustering of services, distribution of tasks and automatic replication and failover.
These extended J2EE containers are required to comply with a full set of J2EE requirements to provide the full set of services. The J2EE containers architects and developers are thus forced in their design and implementation to take into account the general container requirement as well as the specific Sip Container requirements, often c
