Intelligent networking and services in the business communications environment

This paper proposes an intelligent network architecture and protocol, Telecommunication and Computer Service Interface (TCSI) which will provide advanced communication services for the private network in the ISDN era. To achieve a service-independent protocol, the reference model is defined, then protocol sets are discussed based on the model. The protocol, which includes protocols between PBXs and computers and between PBXs for achieving the interworking between multiple PBXs and computers to provide advanced communication services are based on international standards defined by CCITT and ISO to maintain compatible connections between systems provided by different vendors. Also, the implementation of TCSI in the PBX and service example provided by making use of TCSI are described.