LandOfFree - US Patents - Listing for Telephonic communications,Substation or terminal circuitry,For loudspeaking terminal

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Full duplex communication circuits with bilateral T hybrid...

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Full duplex speaker-phone providing increased loop stability

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Full duplex speakerphone

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Full duplex speakerphone

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Full-duplex digital speakerphone

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Half duplex device and signal processing method thereof

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Hands-free communication unit having residual acoustic echo supp

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Hands-free device for use with a cellular telephone in a car to

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Hands-free telephone

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Hands-free telephone

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Handset proximity muting

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Handsfree communication apparatus

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Handsfree radiotelephone having dynamic path attenuation control

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Headset interface

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Headset/hand-free operating mode selecting and switching...

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Histogram-based processing of audio signals

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Howling canceller

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Information processing terminal, operation content notifying...

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Key telephone system