Programmable timer circuit for the signal generator of a communi

Details Programmable timer circuit for the signal generator of a communi Programmable timer circuit for the signal generator of a communi

1996-06-11

1998-06-16

Zele, Krista

Telephonic communications

Supervisory or control line signaling

Signal reception at substation

379373, 379377, 379418, H04M 121

Patent

active

057683638

ABSTRACT:
A programmable timer circuit having ON and OFF volume control states; for controlling the volume of audible signals generated by a signal generator of a communication device at preprogrammed times is disclosed. The programmable timer circuit monitors a communication link for the presence of signals indicative of an incoming communication. When such signals are detected and the volume control state of the timer circuit is ON, the volume of the audible signals generated by the signal generator of the communication device is adjusted so that such audible signals are broadcast with a programmed loudness. Volume control of the audible signals generated by the signal generator does not prevent outgoing communications using the communication device. The fact that the volume of the audible signals generated by the signal generator is controlled, is not apparent to the calling party. Incoming calls for which the volume of the audible signals generated by the signal generator have been controlled can be automatically forwarded to a locally connected answering machine. An override feature is provided that allows an audible signal indicative of an incoming call to be generated, even when the timer circuit is ON, if an authorized signal is detected.

REFERENCES:
patent: 4146754 (1979-03-01), Rose
patent: 4266098 (1981-05-01), Novak
patent: 4558179 (1985-12-01), Bond
patent: 4644106 (1987-02-01), Yeh
patent: 4791664 (1988-12-01), Lutz et al.
patent: 4924499 (1990-05-01), Serby
patent: 5172408 (1992-12-01), Petty et al.
Patent No. 5,062,134 filed on Sep. 17, 1990 and Issued on Oct. 29, 1991 to Laird. Class: 379/131.

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