CH443411A - Circuit arrangement for monitoring telecommunication lines, in particular telephone lines - Google Patents

Circuit arrangement for monitoring telecommunication lines, in particular telephone lines

Info

Publication number
CH443411A
CH443411A CH1301366A CH1301366A CH443411A CH 443411 A CH443411 A CH 443411A CH 1301366 A CH1301366 A CH 1301366A CH 1301366 A CH1301366 A CH 1301366A CH 443411 A CH443411 A CH 443411A
Authority
CH
Switzerland
Prior art keywords
lines
circuit arrangement
particular telephone
monitoring telecommunication
telephone lines
Prior art date
Application number
CH1301366A
Other languages
German (de)
Inventor
Baade Otto
Original Assignee
Int Standard Electric Corp
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 Int Standard Electric Corp filed Critical Int Standard Electric Corp
Publication of CH443411A publication Critical patent/CH443411A/en

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)
CH1301366A 1965-09-10 1966-09-08 Circuit arrangement for monitoring telecommunication lines, in particular telephone lines CH443411A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST024377 1965-09-10

Publications (1)

Publication Number Publication Date
CH443411A true CH443411A (en) 1967-09-15

Family

ID=7460090

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1301366A CH443411A (en) 1965-09-10 1966-09-08 Circuit arrangement for monitoring telecommunication lines, in particular telephone lines

Country Status (4)

Country Link
BE (1) BE686584A (en)
CH (1) CH443411A (en)
FR (1) FR1513305A (en)
NL (1) NL6612564A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3783198A (en) * 1971-03-18 1974-01-01 Gte Automatic Electric Lab Inc Battery reversal detection

Also Published As

Publication number Publication date
NL6612564A (en) 1967-03-13
FR1513305A (en) 1968-02-16
BE686584A (en) 1967-03-08

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