TIME SHARING EXCHANGE SYSTEM

摘要

PURPOSE:To offer a time sharing exchange system which can easily integrate an encoding system of a PCM-codic IC and a channel pulse of a decoding system by providing a memory switch of new constitution. CONSTITUTION:In order to match an encoder channel pulse to be supplied to an encoder 601a to a decoder channel pulse to be supplied to a decoder 601b, timing of an output highway 307 is set so that the output highway 307 will be read integer-times of frame length later than timing of an input highway 207. This means that the output highway is sequentially written in the order of time series in the memory switch where three pairs of memory switches are provided or a memory area is divided in three locations. When the output highway is read out from the memory switch by giving delay with integer-times of one-frame length in order to match to the input highway, a subscriber circuit for connecting to a self-station and a channel pulse of a decoder and of an encoder mounted on an analogue trunk are used together as all-in-one.