U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Call screening using subscriber specified timers and schedules

Patent 5757899 Issued on May 26, 1998. Estimated Expiration Date: Icon_subject August 28, 2017. 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 References

Universal answer arrangement for a PABX
Patent #: 3963875
Issued on: 06/15/1976
Inventor: Gueldenpfennig

Call restriction arrangement
Patent #: 4096356
Issued on: 06/20/1978
Inventor: Burtness, et al.

Method and apparatus for screening telephone calls
Patent #: 4277649
Issued on: 07/07/1981
Inventor: Sheinbein

Method of providing person locator service
Patent #: 4313035
Issued on: 01/26/1982
Inventor: Jordan ,   et al.

Electronic telephones with cooperative interaction between a master set and members' sets in a group
Patent #: 4351986
Issued on: 09/28/1982
Inventor: Fechalos

PBX telephone call control system
Patent #: 4783796
Issued on: 11/08/1988
Inventor: Ladd

Busy/no-answer call completion equipment
Patent #: 4809321
Issued on: 02/28/1989
Inventor: Morganstein ,   et al.

Telephone answering device with artificial intelligence
Patent #: 4850005
Issued on: 07/18/1989
Inventor: Hashimoto

Apparatus for restricting telephone calls
Patent #: 4866762
Issued on: 09/12/1989
Inventor: Pintar

Call announcement arrangement
Patent #: 4899358
Issued on: 02/06/1990
Inventor: Blakley

More ...

Inventors

Application

No. 921979 filed on 08/28/1997

US 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 transmission

Examiners

Primary: Hong, Harry S.

Attorney, Agent or Firm

International Classes

H04M 003/50
H04M 001/64
H04M 015/06
H04M 007/00

Abstract

A 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

  • Pierce et al., "Meeting Private Needs With the Public Network", Bellcore Exchange, pp. 8-13, Dated Jan. 1988
  • Berman et al., "Perspectives on the AIN Architecture", IEEE Communications Magazine, pp. 27-32, Dated Feb. 199
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