Core INAP CS3 shall comprise the CAMEL phase 1, 2, and 3 (release 1999); ensuring a unique IN Network infrastructure for fixed network and mobile applications suitable for implementation in Europe. This shall contain the CAMEL Application Part (CAP) for specification for Phase 3 to support GSM The first release is has the following main topics: Multiple Point of Control, Enhanced CPH capabilities; Enhanced Charging; Number Portability, IN Support for H.323 and SIP/SDP architecture SPAR Phase 1 requirements. CAMEL Phase 3 Release 1999.