Time slot interchange apparatus for maintenance dedicated line o

Details Time slot interchange apparatus for maintenance dedicated line o Time slot interchange apparatus for maintenance dedicated line o

1994-01-28

1995-03-28

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 68, H04J 302

Patent

active

054024145

ABSTRACT:
A time slot interchange apparatus for a maintenance dedicated line of a signal transmission system, capable of utilizing effectively the orderwire line having only one line and of avoiding a crosstalk, data error or the like, has switching units for on/off switching the line at both sides of each of the signal transmission stations, and a control circuit which controls the on/off switching of the switching units, so that, at calling in, the opposite line is made to be off and, at calling out, the line opposite to the calling station is made to be off.

REFERENCES:
patent: 4621357 (1986-11-01), Naiman et al.
patent: 5226042 (1993-07-01), Ardon et al.
patent: 5301190 (1994-05-01), Tsukuda et al.

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