Patent ReferencesUniversal answer arrangement for a PABX Call restriction arrangement Method and apparatus for screening telephone calls Method of providing person locator service Electronic telephones with cooperative interaction between a master set and members' sets in a group PBX telephone call control system Busy/no-answer call completion equipment Telephone answering device with artificial intelligence Apparatus for restricting telephone calls Call announcement arrangement InventorsApplicationNo. 921979 filed on 08/28/1997US Classes:379/196, At switching center379/207.02, Service trigger (activation or deactivation)379/207.03, Time (e.g., time of day, expiration of time period, time zone, date)379/243Class of service determination or transmissionExaminersPrimary: Hong, Harry S.Attorney, Agent or FirmInternational ClassesH04M 003/50H04M 001/64 H04M 015/06 H04M 007/00 AbstractA call screening service and system are disclosed for a telephone switching network. The call screening service provides a service subscriber with a number of call screening features that are subscriber setable via an automated call screening configuration subsystem internal to the telephone switching network. In particular, the call screening service allows the subscriber to set multiple call screening service activation schedules as well as to set both call screening activation and deactivation timers for immediately activating and deactivating the call screening service, respectively. An important aspect of the present invention allows the subscriber to deactivate the call screening service for a time and at the expiration of this time, the call screening service automatically reverts to using any schedules the subscriber has set for activating the call screening service.Other References
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