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

1987-06-18

1989-08-08

Ng, Jin F.

Telephonic communications

Supervisory or control line signaling

Signal reception at substation

379387, H04M 121

Patent

active

048560561

ABSTRACT:
An apparatus is provided for programmably silencing a telephone ringer for one or more predetermined periods of time on a daily basis. In accordance with the time set by a user, the apparatus places the telephone ringer under the control of the data stored in the read only memory and the random access memory of the central processing unit, whereby the ringer can be automatically set at predetermined sounding condition.

REFERENCES:
patent: 3885171 (1975-05-01), Hirono
patent: 4409439 (1983-10-01), Gamble
patent: 4480154 (1984-10-01), Klee
patent: 4644106 (1987-02-01), Yeh

Affiliated with

Also associated with

Rating

Apparatus for timely controlling the sound characteristic of a s does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for timely controlling the sound characteristic of a s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for timely controlling the sound characteristic of a s will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-912055