Telecommunication system with subscriber controlled feature modification
Patent 4897866 Issued on January 30, 1990. Estimated Expiration Date: 
October 19, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 19, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesGeneral-purpose electronic telephone station set Message signaling arrangement between a switching system and user terminals Personal computer--as an interface between a telephone station set and a business communication system Patent #: 4748656 InventorsApplicationNo. 259939 filed on 10/19/1988US Classes:379/201.05, Distribution of service (e.g., downloading, uploading)379/93.14, Having switching station379/93.19, Having pressure or position sensitive surface (e.g., touch-screen, light pen)379/201.04, Display arrangement379/396, Visual signalling (e.g., lamp)379/916TOUCH SCREEN ASSOCIATED WITH TELEPHONE SETExaminersPrimary: Ng, Jin F.Assistant: Lewis, Bonita Attorney, Agent or FirmInternational ClassesH04M 003/42H04M 011/00 AbstractAn arrangement for allowing a subscriber to select telephone features from the subscriber terminal is disclosed. The subscriber terminal includes a touch screen display and a customer premises computer. The terminal in response to a touching of the appropriate area of the screen, displays a list of all possible telephone features available to this subscriber terminal together with an indication of currently subscribed features. By touching the screen in the appropriate areas, the subscriber may select features to be added or deleted. The information regarding the subscriber selection is transmitted to the central office to which the terminal is connected. The central office maintains a set of software packages corresponding to each of the possible combinations of features to be selected by a subscriber and in response to information from the terminal defining a new set of features, the central office transmits the appropriate software package to the terminal. From then on, the terminal is reconfigured to provide the newly selected set of features. The software package includes screen display software showing feature function buttons which indicate the current set of features when the terminal is activated.Other References
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