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Campus crime neutralization method using dual-tone multi-frequency enhanced 2-way radio

  • US 9,928,711 B2
  • Filed: 03/14/2016
  • Issued: 03/27/2018
  • Est. Priority Date: 03/14/2016
  • Status: Active Grant
First Claim
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1. A system for initiating a lockdown at a venue comprising:

  • a plurality of unique 2-way portable radios and un-unique portable 2-way radios wherein each radio has a panic button;

    a plurality of user repeaters located at the venue wherein each repeater is capable of communicating with the plurality of unique and un-unique 2-way portable radios;

    a link repeater remotely located from the venue and in communication with the plurality of user repeaters, wherein the link repeater initiates a call to a first responder upon receipt of a link signal from the user repeater;

    a notification device at the venue to broadcast a message in response to a lockdown event;

    a containment device for restricting access in the venue wherein the containment device is activated in response to the lockdown event; and

    an obstruction device for interfering with the movement of a perpetrator in response to the lockdown event;

    wherein the activation of the panic button on any portable radio transmits a lockdown signal to the user repeater to initiate the lockdown event, wherein the user repeater triggers the notification device, the containment device, the obstruction device, and sends the link signal to the link repeater in response to the receipt of the lockdown signal and wherein the portable radio that initiates the lockdown event is in communication with other portable radios when the lockdown event is initiated.

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