Subscriber's circuit

Details Subscriber's circuit Subscriber's circuit

H - Electricity

04

M

379/67

H04M 3/22 (2006.01) H04M 19/00 (2006.01) H04M 19/02 (2006.01)

Patent

CA 1119330

1 PHF 77-574 C ABSTRACTS: A subscriber's circuit for connecting a sub- scriber's line to a telephone exchange,comprising a sym- metrical amplifier circuit arranged between two feed points having different potentials, the amplifier circuit having two input terminals and two output terminals. Each one of these output terminals is connected to a wire of the subscriber's line and each input terminal of the sym- metrical amplifier circuit is connected to an output of an associated digital-to-analog converter. An input of the converter is connected to one or the other feed point by means of a change-over switch, the change-over switches being controlled in anti-phase by a binary digital signal characterizing a voltage desired for the subscriber's line and derived from a digital signal generator under the con- trol of the telephone exchange.

313083

Affiliated with

Also associated with

Rating

Subscriber's circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Subscriber's circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Subscriber's circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-355102