Distinctive telephone annunciator

Details Distinctive telephone annunciator Distinctive telephone annunciator

1996-02-23

1997-08-05

Zele, Krista M.

Telephonic communications

Supervisory or control line signaling

Signal reception at substation

379375, 379373, H04M 100

Patent

active

056550162

ABSTRACT:
An annunciator is connectable between a phone line terminal and a telephone. The annunciator includes a connector for connecting to a ring conductor in the terminal. A sense circuit is coupled to the connector and converts the ring signal to a control signal. The annunciator further includes a speaker and a memory for storing data indicative of a distinctive annunciation pattern. A processor is responsive to an input control signal from the sensor circuit to utilize the data from the memory to drive the speaker to output the distinctive annunciation pattern. The processor further includes an input for enabling a user to input the distinctive annunciation pattern so that the pattern can be stored for later access by the processor.

REFERENCES:
patent: 4467144 (1984-08-01), Wilkerson et al.
patent: 4847895 (1989-07-01), Wen
patent: 5086458 (1992-02-01), Bowen
patent: 5127045 (1992-06-01), Cragun et al.
patent: 5142569 (1992-08-01), Peters et al.
patent: 5323451 (1994-06-01), Yatsunami

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