  In this paper, we propose a novel abstraction layer for application service
implementation compliant with the Java Call Control (JCC) specifications. It
simplifies creation of multimedia services using the Session Initiation
Protocol (SIP) and the Media Gateway Control Protocol (MGCP). In order to show
its effectiveness, we have implemented a JCC Resource Adaptor for a JAIN
Service Logic Execution Environment (JSLEE), using the Mobicents application
server, which is the only existing open source JSLEE implementation.
Experimental results, obtained by implementing a complex VoIP service, show
both a significant simplification of service implementation and improved
performance over legacy solutions.
