Service Node System as a Service-providing Architecture for Future Telecommunications

摘要

New trends in the area of oncoming B-ISDN services, such as multimedia services demand new service-providing schemes. The new services can not be supported by the traditional public telecommunication networks due to their narrow transmission bandwidths. As telecommunication technologies evolve, the new services have become the reality. Especially, the ATM technology has been the most powerful driving force towards the B-ISDN era. The essential components which constitute the traditional schemes have been defined in the characteristic categories of transmission, terminal and switching. In this paper, we define an additional component for the new B-ISDN services on public networks. We propose a service-providing architecture to be implemented on an ATM-based switching system as a uniform service platform called Service Node System (SNS) for public telecommunication networks. SNS will provide a high degree of efficiency for providing a variety of new services on ATM-based telecommunication networks. We define various functions of the architecture and describe interaction schemes among its function modules. Also, some performance issues, such as network grade of service, signalling transfer delay are considered in an attempt to verify the usefulness and the adequacy of the proposed architecture.