Circuit arrangement for a telephone station with ground connecti

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

379387, H04M 100

Patent

active

048093220

ABSTRACT:
The invention relates to a circuit arrangement for a telephone station with ground connection to a central supply device for the purpose of post-dialling signalling. The circuit arrangement operates independently of which terminal of an exchange battery in the central supply device is connected to ground. A second polarity reversal protection device (rectifier bridge) is used as an indicator of the polarity of the exchange battery, so that, dependent upon the polarity, different grounding paths are formed in the telephone station. The circuit arrangement is universally suitable for PBX exchanges.

REFERENCES:
patent: 4319092 (1982-03-01), Van den Enden et al.
patent: 4614843 (1986-09-01), Coulmance

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Circuit arrangement for a telephone station with ground connecti does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit arrangement for a telephone station with ground connecti, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit arrangement for a telephone station with ground connecti will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1375060

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.