CONCENTRATOR Russian patent published in 1994 - IPC

Abstract RU 2007879 C1

FIELD: electric communications. SUBSTANCE: device has trunk lines, station unit 2, user lines 3, user sets 4, line unit 5, control unit 6, commutation system 7, device for control of commutation system, unit of functional relays, cord circuit 11, dial tone generator, commutation units. EFFECT: increased functional capabilities. 2 cl, 3 dwg

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RU 2 007 879 C1

Authors

Drachev V.A.

Perekhodnik I.I.

Rogushin I.I.

Dates

1994-02-15—Published

1991-01-11—Filed