ENABLING CREATION OF CONVERGED INTERNET PROTOCOL MULTIMEDIA SUBSYSTEM SERVICES BY THIRD-PARTY APPLICATION DEVELOPERS USING SESSION INITIATION PROTOCOL SUPPORT

A plurality of pure operator type rules are instantiated within a domain of a telecommunications operator and a plurality of pure application type rules are instantiated within a domain of a third party telecommunications application provider. The plurality of pure operator type rules and the plurality of pure application type rules are associated with a composite service. A plurality of network components are established to transmit given events of a plurality of protocol-level events to at least one of the domain of the telecommunications operator and the domain of the third party telecommunications application provider. The composite service is deployed in an execution engine of the third party telecommunications application provider.