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Adaptive echo canceller for voice messaging system

Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
Patent

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Adjunct processor embedded in a switching system

Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
Patent

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Alphanumeric caller identification telephone

Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
Patent

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Analog/digital voice storage cellular telephone

Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
Patent

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Analog/digital voice storage cellular telephone

Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
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Announcement apparatus for switching system

Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
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Anonymous interactive telephone system

Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
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Answering device

Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
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Apparatus and accompanying methods for preventing toll fraud thr

Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
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Apparatus and method for automatically determining whether a tel

Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
Patent

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Apparatus and method for obtaining information in a wide-area te

Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
Patent

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Apparatus and method for obtaining information in a wide-area te

Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
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Apparatus and method for transparent telephony utilizing speech-

Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
Patent

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Apparatus and methods for conveying telephone numbers and other

Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
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Apparatus for controlling digital voice recording and playback o

Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
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Apparatus for voice communication over local area networks

Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
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Architecture for voice messaging systems

Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
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Audio recording apparatus using an imperfect memory circuit

Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
Patent

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Auto response phone system

Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
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Automated call screening

Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
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