4. Telephonic communications
  5. Special services
  6. Service trigger

Donald L. Andruska

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Access to unsubscribed features

Telephonic communications – Special services – Anonymous party
Patent

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Controll of call features provided to a subscriber by a hierarch

Telephonic communications – Special services – Service trigger
Patent

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Method for identifying the originating network at the terminatin

Telephonic communications – With usage measurement – Call charge metering or monitoring
Patent

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System allowing telephone customers to send and retrieve...

Telephonic communications – Audio message storage – retrieval – or synthesis – Interaction with an external nontelephone network
Reexamination Certificate

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