DE2523475A1 - - Google Patents

Info

Publication number
DE2523475A1
DE2523475A1 DE19752523475 DE2523475A DE2523475A1 DE 2523475 A1 DE2523475 A1 DE 2523475A1 DE 19752523475 DE19752523475 DE 19752523475 DE 2523475 A DE2523475 A DE 2523475A DE 2523475 A1 DE2523475 A1 DE 2523475A1
Authority
DE
Germany
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.)
Granted
Application number
DE19752523475
Other languages
German (de)
Other versions
DE2523475C2 (de
DE2523475B1 (de
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 filed Critical
Priority to DE19752523475 priority Critical patent/DE2523475C2/de
Priority claimed from DE19752523475 external-priority patent/DE2523475C2/de
Publication of DE2523475B1 publication Critical patent/DE2523475B1/de
Publication of DE2523475A1 publication Critical patent/DE2523475A1/de
Application granted granted Critical
Publication of DE2523475C2 publication Critical patent/DE2523475C2/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/32—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for lines between exchanges

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Alarm Systems (AREA)
DE19752523475 1975-05-27 Verfahren für eine Fernmelde-, insbesondere Fernsprechanlage, zur Überwachung von Erstwegestörungen und Umschaltung auf Notbetrieb Expired DE2523475C2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19752523475 DE2523475C2 (de) 1975-05-27 Verfahren für eine Fernmelde-, insbesondere Fernsprechanlage, zur Überwachung von Erstwegestörungen und Umschaltung auf Notbetrieb

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752523475 DE2523475C2 (de) 1975-05-27 Verfahren für eine Fernmelde-, insbesondere Fernsprechanlage, zur Überwachung von Erstwegestörungen und Umschaltung auf Notbetrieb

Publications (3)

Publication Number Publication Date
DE2523475B1 DE2523475B1 (de) 1976-06-16
DE2523475A1 true DE2523475A1 (enExample) 1976-06-16
DE2523475C2 DE2523475C2 (de) 1977-01-27

Family

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Also Published As

Publication number Publication date
DE2523475B1 (de) 1976-06-16

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Legal Events

Date Code Title Description
E77 Valid patent as to the heymanns-index 1977
8339 Ceased/non-payment of the annual fee