Chime pulser for phone call backup interpreter
AssigneeRotelcom, Inc.
InventorEugene H. Kohlmeier
Life of this patent
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Abstract
The flashing light, which is used by automatic telephone call distributing equipment to indicate that incoming calls have backed up and are awaiting service, generates voltage signals the frequency of which increases with the increase in the number of calls awaiting service. The voltage signals control several relays energized one at a time and successively as the signal frequency increases, and one such relay causes the emitter-collector circuit of a transistor momentarily to conduct each time the relay is energized and deenergized, respectively. Each time the transistor conducts it energizes another relay which momentarily energizes a bell chime to produce an audible signal.
Claims13
In combination with automatic telephone call distributing equipment, having a flashing indicator light intermittently energized at a frequency which increases in proportion with the increase in incoming telephone calls awaiting service.
- a first plurality of relays connected to said equipment and responsive to the frequency of said flashing light to be energized one at a time and successively as said frequency increases,
- audible signal generating means, and
- means interposed between said relays and said signal generating means and operative momentarily to energize said signal generating means to produce an audible signal each time one of said relays is energized and deenergized, respectively.
Apparatus for monitoring telephone call backup associated with automatic call distributing equipment of the type which produces an intermittent control signal the frequency of which increases in proportion to the increase in incoming calls which have been backed up by the equipment and are awaiting service, comprising
- a plurality of switching devices each of which is operative in response to a different frequency range of said control signal to produce an output signal only when the frequency of said control signal is within the range associated with each device,
- means responsive to one of said devices to generate a first electrical signal whenever said one device produces an output signal, and to generate a second electrical signal when said output signal is no longer generated from the output of said one device, and
- means for producing an audible signal each time one of said first and second electrical signals, respectively, is generated.
Dependencies are inferred from the claim text.