Telephone subscriber paging arrangement

Claim 2

A ringing circuit for a telephone set comprising: in combination, means including a transducer responsive to an oscillatory signal for generating an audible ringing tone; means for detecting a frequency modulated voice signal; and means for applying the output of said detecting means to said transducer, thereby to utilize said transducer as a loudspeaker for speech signals when said set is either in an on-hook or off-hook condition.

Claim 3

Apparatus in accordance with claim 1 wherein said responsive means includes a pair of parallel connected, band-pass amplifiers.

Claim 4

Apparatus in accordance with claim 2 wherein said detecting means is connected for operation independent of said amplifiers.

Claim 5

Apparatus in accordance with claim 2 wherein said detecting means comprises the tandem connected combination of an FM to AM conversion circuit and an AM detector circuit, said combination being connected in parallel relation with said amplifiers.

Claim 6

Apparatus in accordance with claim 2 wherein said responsive means further includes means responsive to coincident outputs from said amplifiers for generating an intermediate output signal and a transducer-driving amplifier circuit responsive to said intermediate output signal for applying an amplified signal to said transducer.

Claim 7

A telephone set comprising: in combination, first means responsive to an oscillatory input signal applied to an input point for generating a first intermediate output signal; recording-reproducer means having an audio message recorded thereon responsive to said first intermediate signal for generating an audio frequency signal corresponding to said message; electroacoustic transducer means for translating said audio frequency signal to a corresponding acoustic signal; and second means responsive to a voice modulated FM signal applied to said input point for driving said transducer.

Claim 8

A telephone set comprising: in combination, first means responsive to an oscillatory input signal applied to an input point for generating a first intermediate output signal; recording-reproducer means having an audio message recorded thereon responsive to said first intermediate signal for generating an audio frequency signal corresponding to said message; electroacoustic transducer means for translating said audio frequency signal to a corresponding acoustic signal; and second means responsive to a voice modulated FM signal applied to said input point for driving said transducer.

Claim 9

Apparatus in accordance with claim 6 wherein said first means includes a plurality of parallel-connected, band-pass amplifiers each tuned to a respective peak frequency.

Claim 10

Apparatus in accordance with claim 7 wherein said second means comprises a circuit path in parallel relation with said amplifiers, said path including an FM to AM conversion circuit and an AM detector circuit in tandem relation.

Claim 11

A combination tone ringing audio announcement circuit for a telephone set comprising: an input point for receiving either tone ringing signals or voice modulated signals from a telephone line; an electrOacoustic transducer; first means for converting said ringing signals to first transducer driving signals; second means for applying said first driving signals to said transducer; third means for converting said voice modulated signals to second transducer driving signals; fourth means for applying said second driving signals to said transducer; said transducer operating as a tone ringer in response to said first driving signals and as a loudspeaker in response to said second driving signals; and wherein said first means includes a pair of parllel-connected, band-pass amplifiers, a signal generating circuit responsive to coincident outputs from said amplifiers for generating an output signal and a third amplifier circuit for applying said output signal to said transducer.

Claim 12

A combination tone ringing audio announcement circuit for a telephone set comprising: an input point for receiving either tone ringing signals or voice modulated signals from a telephone line; an electrOacoustic transducer; first means for converting said ringing signals to first transducer driving signals; second means for applying said first driving signals to said transducer; third means for converting said voice modulated signals to second transducer driving signals; fourth means for applying said second driving signals to said transducer; said transducer operating as a tone ringer in response to said first driving signals and as a loudspeaker in response to said second driving signals; and wherein said first means includes a pair of parllel-connected, band-pass amplifiers, a signal generating circuit responsive to coincident outputs from said amplifiers for generating an output signal and a third amplifier circuit for applying said output signal to said transducer.

Claim 13

A combination tone ringing audio announcement circuit for a telephone set comprising: an input point for receiving either tone ringing signals or voice modulated signals from a telephone line, an electroacoustic transducer; first means for converting said ringing signals to first transducer driving signals; second means for applying said first driving signals to said transducer; third means for converting said voice modulated signals to second transducer driving signals; fourth means for applying said second driving signals to said transducer; said transducer operating as a tone ringer in response to said first driving signals and as a loudspeaker in response to said second driving signals; and wherein said third means comprises an FM-AM converting circuit in tandem relation with an AM detector circuit, said converting circuit and said detector circuit being connected in parallel relation with said first means.

Claim 14

A combination tone ringing audio announcement circuit for a telephone set comprising: an input point for receiving either tone ringing signals or voice modulated signals from a telephone line, an electroacoustic transducer; first means for converting said ringing signals to first transducer driving signals; second means for applying said first driving signals to said transducer; third means for converting said voice modulated signals to second transducer driving signals; fourth means for applying said second driving signals to said transducer; said transducer operating as a tone ringer in response to said first driving signals and as a loudspeaker in response to said second driving signals; and wherein said third means comprises an FM-AM converting circuit in tandem relation with an AM detector circuit, said converting circuit and said detector circuit being connected in parallel relation with said first means.

Claim 15

A tone ringing circuit for a telephone set comprising: in combination; an input point; an electroacoustic transducer; first means responsive to tone ringing signals applied to said input point from a telephone line for driving said transducer thereby to produce tone ringing; second means responsive to voice modulated signals applied to said input point from said telephone line for driving said transducer thereby to produce an audible signal corresponding to said voice modulated signals; and said first and second means being operable when said telephone set is in either an on-hook or an off-hook condition.

Claim 16

A tone ringing circuit for a telephone set comprising: in combination; an input point; an electroacoustic transducer; first means responsive to tone ringing signals applied to said input point from a telephone line for driving said transducer thereby to produce tone ringing; second means responsive to voice modulated signals applied to said input point from said telephone line for driving said transducer thereby to produce an audible signal corresponding to said voice modulated signals; and said first and second means being operable when said telephone set is in either an on-hook or an off-hook condition.