GB1327862A - Apparatus for indicating the holding condition and or the non-holding condition on a subscribers line - Google Patents

Apparatus for indicating the holding condition and or the non-holding condition on a subscribers line

Info

Publication number
GB1327862A
GB1327862A GB2076271A GB2076271A GB1327862A GB 1327862 A GB1327862 A GB 1327862A GB 2076271 A GB2076271 A GB 2076271A GB 2076271 A GB2076271 A GB 2076271A GB 1327862 A GB1327862 A GB 1327862A
Authority
GB
United Kingdom
Prior art keywords
line
unloop
loop
devices
detector
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.)
Expired
Application number
GB2076271A
Other languages
English (en)
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.)
Zellweger Uster AG
Original Assignee
Zellweger Uster 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 Zellweger Uster AG filed Critical Zellweger Uster AG
Publication of GB1327862A publication Critical patent/GB1327862A/en
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
    • H04M3/2272—Subscriber line supervision circuits, e.g. call detection circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Interface Circuits In Exchanges (AREA)
GB2076271A 1970-02-03 1971-04-19 Apparatus for indicating the holding condition and or the non-holding condition on a subscribers line Expired GB1327862A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH156470A CH519835A (de) 1970-02-03 1970-02-03 Verfahren und Vorrichtung zur Anzeige des Zustandes der Belegung auf einer Teilnehmerleitung

Publications (1)

Publication Number Publication Date
GB1327862A true GB1327862A (en) 1973-08-22

Family

ID=4213371

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2076271A Expired GB1327862A (en) 1970-02-03 1971-04-19 Apparatus for indicating the holding condition and or the non-holding condition on a subscribers line

Country Status (7)

Country Link
CH (1) CH519835A (de)
DE (1) DE2100458C3 (de)
ES (1) ES387709A1 (de)
FI (1) FI56086C (de)
GB (1) GB1327862A (de)
NO (1) NO130448C (de)
SE (1) SE354954B (de)

Also Published As

Publication number Publication date
CH519835A (de) 1972-02-29
SE354954B (de) 1973-03-26
NO130448B (de) 1974-09-02
FI56086B (fi) 1979-07-31
DE2100458A1 (de) 1971-08-12
FI56086C (fi) 1979-11-12
ES387709A1 (es) 1974-02-16
DE2100458B2 (de) 1979-09-13
DE2100458C3 (de) 1980-06-04
NO130448C (de) 1974-12-18

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee