Ringing signal reformatting circuit

Details Ringing signal reformatting circuit Ringing signal reformatting circuit

1985-05-02

1987-02-24

Dwyer, James L.

Telephonic communications

Supervisory or control line signaling

Signal reception at substation

379164, H04M 172

Patent

active

046463470

ABSTRACT:
A ringing signal reformatting circuit detects ringing signals having one or more ringing bursts and generates a code representing a modified distinctive ringing signal having a predetermined number of bursts and a predetermined on/off timing in response to all detected ringing signals having the same number of ringing bursts. This coded ring signal is sent to a station set and decoded thereat to generate a distinctive ring signal.

REFERENCES:
patent: 4066848 (1978-01-01), Darwood
patent: 4184053 (1980-01-01), Saneyoski
patent: 4477697 (1984-10-01), Judd et al.
patent: 4508937 (1985-04-01), Burger et al.
patent: 4567333 (1986-01-01), Embree et al.

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