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Centralized call processing

Telephonic communications – Call or terminal access alarm or control – Fraud or improper use mitigating or indication
Reexamination Certificate

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Centralized voice over IP recording and retrieval method and...

Telephonic communications – Call or terminal access alarm or control – Time out
Reexamination Certificate

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Clip-on fraud prevention method and apparatus

Telephonic communications – Call or terminal access alarm or control – Fraud or improper use mitigating or indication
Reexamination Certificate

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Coded phone security system

Telephonic communications – Call or terminal access alarm or control – At substation
Patent

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Communication facilities access control arrangement

Telephonic communications – Call or terminal access alarm or control – Fraud or improper use mitigating or indication
Patent

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Communication request processing system communication...

Telephonic communications – Call or terminal access alarm or control – At switching center
Reexamination Certificate

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Communication support system for providing security of...

Telephonic communications – Call or terminal access alarm or control – At substation
Reexamination Certificate

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Communication support system for providing security of...

Telephonic communications – Call or terminal access alarm or control – At substation
Reexamination Certificate

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Communication terminal unit for connection to an ISDN

Telephonic communications – Call or terminal access alarm or control – At substation
Patent

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Computer-based method and apparatus for controlling, monitoring,

Telephonic communications – Call or terminal access alarm or control
Patent

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Computer-based method and apparatus for controlling, monitoring,

Telephonic communications – Call or terminal access alarm or control
Patent

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Computer-based method and apparatus for controlling,...

Telephonic communications – Call or terminal access alarm or control
Reexamination Certificate

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Computer-based method and apparatus for controlling,...

Telephonic communications – Call or terminal access alarm or control – Time out
Reexamination Certificate

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Computer-based method and apparatus for controlling,...

Telephonic communications – Call or terminal access alarm or control
Reexamination Certificate

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Computer-based method and apparatus for controlling,...

Telephonic communications – Call or terminal access alarm or control
Reexamination Certificate

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Computer-based method and apparatus for controlling,...

Telephonic communications – Call or terminal access alarm or control – Fraud or improper use mitigating or indication
Reexamination Certificate

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Connection management servicing method for communication...

Telephonic communications – Call or terminal access alarm or control – Time out
Reexamination Certificate

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Consistency of state model visualization across different...

Telephonic communications – Call or terminal access alarm or control
Reexamination Certificate

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Controllable annunciator using ring signal

Telephonic communications – Call or terminal access alarm or control – At substation
Patent

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Copy protection of software for use in a private branch exchange

Telephonic communications – Call or terminal access alarm or control – Fraud or improper use mitigating or indication
Patent

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