Additional line coupling circuit to an intercom telephone set

Details Additional line coupling circuit to an intercom telephone set Additional line coupling circuit to an intercom telephone set

1983-06-30

1985-03-12

Schreyer, S. D.

179 18AD, H04M 174

Patent

active

045047022

ABSTRACT:
An additional line coupling circuit to an intercom telephone set having inserted between the additional line and the intercom telephone set, a d.c. line uncoupling circuit as well as means coupled to one of the wires of the line for transmitting signals on the line and means connected to one or the other line wires for receiving the signals transmitted on the line.

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