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Adjusting music length to expected waiting time while caller...

Telephonic communications – Special services – Call waiting
Reexamination Certificate

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Advanced call waiting processing

Telephonic communications – Special services – Call waiting
Patent

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Advanced call waiting processing

Telephonic communications – Special services – Call waiting
Patent

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Advanced call waiting processing

Telephonic communications – Special services – Call waiting
Patent

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AIN call queuing

Telephonic communications – Special services – Call waiting
Reexamination Certificate

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Apparatus and method for call-waiting event interception

Telephonic communications – Special services – Call waiting
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Apparatus and method for called-party telephone messaging...

Telephonic communications – Special services – Call waiting
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Apparatus and method for CNG detection with call waiting

Telephonic communications – Special services – Call waiting
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Apparatus for blocking voice band signals when receiving caller

Telephonic communications – Special services – Call waiting
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Apparatus, method and system for personal telecommunication...

Telephonic communications – Special services – Call waiting
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