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Message playback concurrent with speakerphone operation

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
Reexamination Certificate

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Method and apparatus for active reduction of speakerphone...

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
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Method and apparatus for active reduction of speakerphone...

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
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Method and apparatus for active reduction of speakerphone...

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
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Method and apparatus for canceling tone signal noise generated w

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
Patent

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Method and apparatus for multiparty collaboration enhancement

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
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Method and apparatus for outbound wave subtraction using a...

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
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Method and apparatus for personalized conference and...

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
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Method and apparatus for volume and intelligibility control for

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
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Method and apparatus for volume and intelligibility control for

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
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Method and apparatus for volume switched gain control

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
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Method and device for changing to a speakerphone mode

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
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Method and system for automatic gain control with adaptive...

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
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Method for active feedback suppression

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
Patent

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Method for electrically simulating a cradle switch and a hands f

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
Patent

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Method for fail-safe operation in a speaker phone system

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
Patent

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Method for reducing noise from a non-linear device that...

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
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Method for the control of voice channel attenuation

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
Patent

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Method of and device for echo cancellation

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
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Microphone/loudspeaker having a speakerphone mode and a micropho

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
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