TDM SWITCHING NETWORK USING TIME SPACED CONTROL SIGNALS

摘要

The description covers the general organization of a switching network for a TDM exchange using PCM principles. The network comprises two selection stages and there is a particular grouping of the space, time and junctor memories which simplifies their access and which allows for a ready extension of the capacity of the network. The switching network may establish a special connection for the supervision of a traffic connection between a calling channel and an outgoing channel by using a junctor different from that used for the traffic connection. Thus in order to supervise the messages sent from the calling channel to the outgoing channel, there is established a first partial connection from the calling channel to the intermediate junctor on a first synchronous signal and using one address connection and a second partial connection from the junctor to the outgoing channel on an asynchronous signal spaced in time from said first signal, the channel having a second address. The two partial connections complete the connection through the switching network to complete the connection.