Ringing application circuit

Details Ringing application circuit Ringing application circuit

1985-11-06

1987-03-24

Rubinson, Gene Z.

Telephonic communications

Supervisory or control line signaling

Signal reception at substation

379382, 379412, H04M 322, H04M 1902

Patent

active

046527010

ABSTRACT:
This invention relates to line circuits and, in particular, to the apparatus contained therein for switching the ringing signal on to the communication pair which connects the line circuit to the telephone station set which it serves.
Electromechanical relays provide an ideal switching function but require a significant amount of space while semiconductor switches do not require much space but provide an imperfect switching function which adversely affects the performance characteristics of the line circuit.
The subject ringing apparatus makes use of a semiconductor switch to provide the ring relay function and incorporates additional circuitry to eliminate the difficulties associated with semiconductor switches.

REFERENCES:
patent: 4539438 (1985-09-01), Rosenbaum et al.
patent: 4595796 (1986-06-01), Robra et al.
"Electronic Line Pack with Opto-Electronic Line Isolation", M. A. Patten, IBM Technical Disclosure Bulletin, vol. 20, No. 1, Jun. 1977, pp. 375-376.
"One Chip Closes in on SLIC Functions", L. Brown et al., Electronic Design, Sep. 27, 1980, pp. 85-91.

Affiliated with

Also associated with

Rating

Ringing application 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 Ringing application circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ringing application circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1355160