Traffic Assistance Service System for ESS

This paper describes the traffic assistance service system that has been developed as a standard operator position system applicable to ESS and is employed in a variety of NEC´s telephone switching systems. To provide services of various kinds of semiautomatic calls, it is important that operator position system is not only a cost-saving system but also has a wide range of flexibility. For this reason, this operator position system has been developed as an operator position system which is theoretically independent of the main switching system and is employing a variable function share control system and an optimum modularity of both hardware and software. Also, as the operators attend their positions continuously during their work time, it is important that various human engineering factors are incorporated in the operator position system. In this regard, the following factors have been introduced in this operator position system; equalization of operators´ work loads and a call handling system which depend on the operator´s will, simplification of call handling procedures inclusive of automatization of some operations, plasma display provision designed with operator´s visual sense taken into consideration, and employment of operator console of such physical construction that is based on the movable range of the human body and on easiness of the operator´s work performance.