NL6817629A - - Google Patents

Info

Publication number
NL6817629A
NL6817629A NL6817629A NL6817629A NL6817629A NL 6817629 A NL6817629 A NL 6817629A NL 6817629 A NL6817629 A NL 6817629A NL 6817629 A NL6817629 A NL 6817629A NL 6817629 A NL6817629 A NL 6817629A
Authority
NL
Netherlands
Application number
NL6817629A
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
Publication of NL6817629A publication Critical patent/NL6817629A/xx

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
    • H04M3/2272—Subscriber line supervision circuits, e.g. call detection circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
NL6817629A 1967-12-14 1968-12-09 NL6817629A (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1756667A CH466379A (de) 1967-12-14 1967-12-14 Schaltungsanordnung zur Ueberwachung der Schleifenzustandsänderungen auf zweidrähtigen, symmetrisch gespeisten Uebertragungsleitungen, insbesondere Teilnehmeranschlussleitungen in Fernmeldeanlagen

Publications (1)

Publication Number Publication Date
NL6817629A true NL6817629A (xx) 1969-06-17

Family

ID=4426406

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6817629A NL6817629A (xx) 1967-12-14 1968-12-09

Country Status (3)

Country Link
CH (1) CH466379A (xx)
DE (1) DE1812201A1 (xx)
NL (1) NL6817629A (xx)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3808377A (en) * 1972-09-15 1974-04-30 Gte Automatic Electric Lab Inc Remote sensing circuit

Also Published As

Publication number Publication date
CH466379A (de) 1968-12-15
DE1812201A1 (de) 1969-08-14

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