Loop sensing circuit for use with a subscriber loop interface ci

Details Loop sensing circuit for use with a subscriber loop interface ci Loop sensing circuit for use with a subscriber loop interface ci

1980-08-05

1982-11-09

Tupper, Robert S.

179 16AA, 179170T, H04B 158

Patent

active

043586457

ABSTRACT:
A loop sensing circuit is coupled between a solid state hybrid circuit that provides signal conversion between a pair of unidirectional transmission paths and a bidirectional subscriber loop. The loop sensing circuit includes placing respective protection resistors coupled in parallel with first and second sensing resistors between the hybrid and the subscriber loop terminals to provide a dc current path between the bidirectional subscriber loop and the hybrid circuit.

REFERENCES:
patent: 3849609 (1974-11-01), Voorman
patent: 4004109 (1977-01-01), Boxall
patent: 4203012 (1980-05-01), Boxall

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