Subscriber terminal for use in a TDM switching system

Details Subscriber terminal for use in a TDM switching system Subscriber terminal for use in a TDM switching system

1978-02-06

1979-12-11

Brown, Thomas W.

H04Q 1104

Patent

active

041784782

ABSTRACT:
A subscriber termnal for use in a TDM telephone system operating in a multiframe format where each time frame consists of a plurality of time slots, said system including a base switch connected to a plurality of multitime slot data buses for switching encoded data between specified ones of the time slots. A subscriber switch is connected to a plurality of local subscriber lines and to a pair of the data buses for switching encoded data between the subscriber lines and specified time slots on the pair of data buses. The subscriber switch includes a number of subscriber terminals where each terminal is connected to some of the subscriber lines and includes a pair of subscriber switch controllers for controlling the switching of data between the subscriber lines and the pair of buses. Each subscriber terminal provides the capability of encoding, multiplexing and switching data from a plurality of subscriber lines to specified time slots on the pair of multitime slot buses and capability of decoding, demultiplexing and switching other encoded data from specified time slots on the pair of data buses to the subscriber lines.

REFERENCES:
patent: 3514541 (1970-05-01), Inose et al.
patent: 3912873 (1975-10-01), Skaperda
patent: 4069399 (1978-01-01), Barrett et al.
Special Issue on Telecommunications Circuit Switching, Proceedings of the IEEE, Sep. 1977, pp. 1235-1390.

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