Group emergency call system

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5166972
SERIAL NO

07426418

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A group emergency call system for use in a central office exchange or other communication system for alerting a group of people in the event of an emergency. Data in the form of a hunt group assignment table is stored within the communication system, containing a predetermined pilot number for defining a particular emergency hunt group within the communication system, and a plurality of directory numbers corresponding to respective ones of the subscriber sets assigned to the emergency hunt group. Circuitry is provided for receiving dialed digit signals designating an incoming emergency call from a predetermined one of the subscriber sets and comparing the dialed digits with the pilot number, and in the event the dialed digit signals correspond to the predetermined pilot number generating a request device message signal. Circuitry is provided for receiving the request device message signal and in response retrieving the directory numbers from the emergency hunt group assignment table and generating a plurality of ringing signals for simultaneously ringing respective ones of the subscriber sets assigned to the emergency hunt group, such that members of the emergency hunt group are alerted to the incoming emergency call.

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First Claim

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Patent Owner(s)

  • MITEL NETWORKS CORPORATION

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Smith, Dawn Carp, CA 13 407

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