SE8300558L - DEVICE IN AN ALARM SYSTEM - Google Patents

DEVICE IN AN ALARM SYSTEM

Info

Publication number
SE8300558L
SE8300558L SE8300558A SE8300558A SE8300558L SE 8300558 L SE8300558 L SE 8300558L SE 8300558 A SE8300558 A SE 8300558A SE 8300558 A SE8300558 A SE 8300558A SE 8300558 L SE8300558 L SE 8300558L
Authority
SE
Sweden
Prior art keywords
error
line
receivers
initiated
unit
Prior art date
Application number
SE8300558A
Other languages
Swedish (sv)
Other versions
SE8300558D0 (en
SE458565B (en
Inventor
Borje Enblom
Bruno Forsen
Bo Stenberg
Bjorn Lexell
Original Assignee
Borje Enblom
Bruno Forsen
Bo Stenberg
Lexell Bjoern
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Borje Enblom, Bruno Forsen, Bo Stenberg, Lexell Bjoern filed Critical Borje Enblom
Priority to SE8300558A priority Critical patent/SE458565B/en
Publication of SE8300558D0 publication Critical patent/SE8300558D0/en
Publication of SE8300558L publication Critical patent/SE8300558L/en
Publication of SE458565B publication Critical patent/SE458565B/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Alarm Systems (AREA)

Abstract

Device in an alarm system, notably a security, operational, or break-in alarm system which includes a transmitter (1) with an automatic dialling unit (2), one or more receivers (3) which can be called through the automatic dialling unit (2) in the transmitter via the switch and line system in the telephone system. A voltage detection device (4) is connected a subscriber or connection line (L). When voltage on the line falls below a predetermined value because of a short-circuit, open circuit, or extension error on the line or another error in the system, the voltage detection unit initiates an error signal. With this error signal, a local alarm for the problem is initiated and/or a further dialling unit (6) is initiated which via a fixed or dial-up connection (L') in the telephone network is intended to transfer information about said error to one or more of the said receivers (3).<IMAGE>
SE8300558A 1983-02-03 1983-02-03 Device in an alarm system, notably a security, operational, or break-in alarm system which includes a transmitter with an automatic dialling unit SE458565B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE8300558A SE458565B (en) 1983-02-03 1983-02-03 Device in an alarm system, notably a security, operational, or break-in alarm system which includes a transmitter with an automatic dialling unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8300558A SE458565B (en) 1983-02-03 1983-02-03 Device in an alarm system, notably a security, operational, or break-in alarm system which includes a transmitter with an automatic dialling unit

Publications (3)

Publication Number Publication Date
SE8300558D0 SE8300558D0 (en) 1983-02-03
SE8300558L true SE8300558L (en) 1984-08-04
SE458565B SE458565B (en) 1989-04-10

Family

ID=20349873

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8300558A SE458565B (en) 1983-02-03 1983-02-03 Device in an alarm system, notably a security, operational, or break-in alarm system which includes a transmitter with an automatic dialling unit

Country Status (1)

Country Link
SE (1) SE458565B (en)

Also Published As

Publication number Publication date
SE8300558D0 (en) 1983-02-03
SE458565B (en) 1989-04-10

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