×

Combination telephone set and security panel monitor

  • US 5,457,730 A
  • Filed: 05/31/1994
  • Issued: 10/10/1995
  • Est. Priority Date: 05/31/1994
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of utilizing display type telephone sets connected to a common control panel to function in the alternative as a security panel of a security system and as a telephone set where said control panel is interconnected to both a public telephone network and a security system comprising, in combination:

  • incorporating a "hot-key" in each telephone set for altering the function of said telephone set;

    monitoring the key condition of all keys in each of the telephone sets at the common control panel;

    altering the interpretation of key depressions from a given telephone set upon detection of activation of the "hot-key" in said given telephone set; and

    locking out other telephone sets and security panels from alarm mode access to security system information until the given telephone set returns to a telephone mode.

View all claims
  • 5 Assignments
Timeline View
Assignment View
    ×
    ×