Circuit arrangement for centrally controlled time division multi

Details Circuit arrangement for centrally controlled time division multi Circuit arrangement for centrally controlled time division multi

1987-02-19

1988-08-09

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 58, 379273, 340827, H04J 116

Patent

active

047633166

ABSTRACT:
A circuit for a centrally controlled time division multiplex telecommunication exchange having PCM line/trunk groups connected to a switching network wherein each line/trunk group comprises a plurality of line units to connect one time division multiplex interexchange trunk each and is connected to a switching network over a time division multiplex line. Two line/trunk groups are assigned to each other in pairs. The connection devices which are assigned to one and to the other of two line/trunk groups and which in normal operation are connected with the time division multiplex switching device of each of their own line/trunk group can be changed over during emergency operation of one of the two line/trunk groups to the time division multiplex switching device of the other line/trunk group.

REFERENCES:
patent: 4382294 (1983-05-01), Beuscher et al.
Telecom Report 4 (1981); Beiheft, "Digital Vermittlung-System EWSD"; Siemens Aktiengesellschaft; 1981; pp. 1-74.

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