MODELING AND PERFORMANCE ANALYSIS OF COMMON CHANNEL SIGNALING NETWORKS

Connection control and the realization of Intelligent Network function s in digital networks is supported by common channel signalling based on the CCITT Signalling System No. 7. In this paper, a generic modelli ng approach for the signalling network is developed which yields the l oading of all network resources and the network performance. The model s are obtained considering the signalling system protocol functions sp ecified by the CCITT, as well as the information flows through these f unctions. The approach allows the derivation of virtual processor mode ls, which in a further step are mapped onto the implementation accordi ng to individual architectures. Using these principles, a signalling n etwork planning tool has been developed. The capabilities of the plann ing tool are demonstrated by an example, where the new service Univers al Personal Telecommunication (UPT) is introduced additionally to ISDN and mobile communication services.