DE2645330A1 - Hochfrequenz-telefonrundspruch-anlage mit alarmdurchsage-einrichtung - Google Patents

Hochfrequenz-telefonrundspruch-anlage mit alarmdurchsage-einrichtung

Info

Publication number
DE2645330A1
DE2645330A1 DE19762645330 DE2645330A DE2645330A1 DE 2645330 A1 DE2645330 A1 DE 2645330A1 DE 19762645330 DE19762645330 DE 19762645330 DE 2645330 A DE2645330 A DE 2645330A DE 2645330 A1 DE2645330 A1 DE 2645330A1
Authority
DE
Germany
Prior art keywords
frequency
carrier frequency
telephone
switching
additional carrier
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
DE19762645330
Other languages
German (de)
English (en)
Inventor
Kurt Wehrlin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hasler AG
Original Assignee
Hasler AG
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 Hasler AG filed Critical Hasler AG
Publication of DE2645330A1 publication Critical patent/DE2645330A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B27/00—Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations
    • G08B27/006—Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations with transmission via telephone network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/76—Wired systems
    • H04H20/77—Wired systems using carrier waves
    • H04H20/81—Wired systems using carrier waves combined with telephone network over which the broadcast is continuously available

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
  • Circuits Of Receivers In General (AREA)
DE19762645330 1975-12-23 1976-10-07 Hochfrequenz-telefonrundspruch-anlage mit alarmdurchsage-einrichtung Withdrawn DE2645330A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1667675A CH593593A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1975-12-23 1975-12-23

Publications (1)

Publication Number Publication Date
DE2645330A1 true DE2645330A1 (de) 1977-07-07

Family

ID=4419295

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19762645330 Withdrawn DE2645330A1 (de) 1975-12-23 1976-10-07 Hochfrequenz-telefonrundspruch-anlage mit alarmdurchsage-einrichtung

Country Status (3)

Country Link
CH (1) CH593593A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2645330A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES452438A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3324517A1 (de) * 1983-07-07 1985-01-17 ANT Nachrichtentechnik GmbH, 7150 Backnang Notrufsystem

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3324517A1 (de) * 1983-07-07 1985-01-17 ANT Nachrichtentechnik GmbH, 7150 Backnang Notrufsystem

Also Published As

Publication number Publication date
CH593593A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1977-12-15
ES452438A1 (es) 1977-11-01

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Legal Events

Date Code Title Description
8130 Withdrawal