Designing a CORBA-based high performance open programmable signaling system for ATM switching platforms

ATM switching platforms are well suited for transporting multimedia streams with QOS requirements. This paper describes the system design of a high performance connection management system for xbind, a flexible open programmable signaling system for ATM switching platforms. The latency and throughput of call processing is improved by caching, message aggregation and processing of requests in parallel. Using a set of general purpose UNIX workstations, we are able to attain a maximum throughput of close to 600,000 call operations (setup and delete) per hour with an average call setup time of 85ms. With a low traffic load of 3,600 call operations per hour, an average call setup latency of 11ms can be obtained. The system is adaptive. By adjusting various control parameters, the connection manager(s) can be dynamically configured to trade-off between throughput and call setup time.