Network Utilization in a Sectionalized Space-Division Switching System

In the sectionalized electronic switching system under consideration, serial combinations of connections established through a general purpose switching network are used to associate any required combination of peripheral equipments with a call. The implementation of this process, known as serial trunking, is described with emphasis on the functions of registers which act as an interface between the switching network and the common control. The combination of serial trunking stored program control and sectionalization provides security and flexibility for the incorporation of new facilities.