Apparatus for annunciating the completion of a telephone call ho

Details Apparatus for annunciating the completion of a telephone call ho Apparatus for annunciating the completion of a telephone call ho

1982-02-22

1984-01-10

Schreyer, Stafford D.

179 99H, 179 84SS, H04M 1102, H04M 100

Patent

active

044254792

ABSTRACT:
An apparatus is disclosed for annunciating to an active party and a passive party the completion of a call hold interval in a telephone communication system. The apparatus comprises a voice detection circuit which senses the presence of a voice communication on the telecommunication line for actuation of an annunciation signal timer. The annunciation signal timer actuates an annunciation signal generator for a period of time referred to as the annunciation signal interval. While actuated, the annunciation signal generator produces tone bursts which are supplied to a speaker located proximate to the passive party. The tone bursts are also muted back to the active party via the telecommunication line. The apparatus of the invention as thus disclosed enables the passive party who has been put on hold by the active party to place the active party also on hold thereby eliminating the necessity of the passive party aurally monitoring the telephone. When the active party returns and speaks into the line, the apparatus senses such voice communication and produces the tone bursts, during the annunciation signal interval, which are heard by both the passive party and the ative party thereby indicating to the passive party to return to the line and indicating to the active party that the telephone line remains active. If the passive party is delayed in returning to the line, the active party may register his protest by again speaking into the telephone to initiate another series of tone bursts for a second annunciation signal interval.

REFERENCES:
patent: 2506279 (1950-05-01), Rowe
patent: 3806665 (1974-04-01), Goldberg
patent: 3961142 (1976-06-01), Caffine

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