Apparatus for timely controlling the sound characteristic of a s

Details Apparatus for timely controlling the sound characteristic of a s Apparatus for timely controlling the sound characteristic of a s

1985-01-10

1987-02-17

Brown, Thomas W.

Telephonic communications

Supervisory or control line signaling

Signal reception at substation

34030915, 379387, H04M 121

Patent

active

046441069

ABSTRACT:
An automatic telephone silencer and volume controller having a microprocessor for storing time and volume information and for timely controlling the sound characteristics of a telephone ringer in accordance with the time and volume information stored. The time and volume information may be entered into the microprocessor by a suitable keyboard. Each time entry has associated with it a volume entry so that the telephone will ring at the prescribed volume from that time until the time denoted by the next time entry.

REFERENCES:
patent: 4046972 (1977-09-01), Huizinga et al.
patent: 4409439 (1983-10-01), Gamble
patent: 4480154 (1984-10-01), Klee
patent: 4521843 (1985-06-01), Pezzolo et al.

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