BE900947A - REMOTE ISOLATION DEVICE. - Google Patents

REMOTE ISOLATION DEVICE.

Info

Publication number
BE900947A
BE900947A BE0/213931A BE213931A BE900947A BE 900947 A BE900947 A BE 900947A BE 0/213931 A BE0/213931 A BE 0/213931A BE 213931 A BE213931 A BE 213931A BE 900947 A BE900947 A BE 900947A
Authority
BE
Belgium
Prior art keywords
isolation device
remote isolation
telephone
impedance
state
Prior art date
Application number
BE0/213931A
Other languages
French (fr)
Inventor
N F Muelleman
Original Assignee
Teradyne Inc
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 Teradyne Inc filed Critical Teradyne Inc
Publication of BE900947A publication Critical patent/BE900947A/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
    • H04M3/26—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
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
    • H04M3/301—Circuit arrangements at the subscriber's side of the line

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Electronic Switches (AREA)

Abstract

Un dispositif d'isolement à distance à grande vitesse très fiable pour déconnecter temporairement du matériel téléphonique d'un abonné des fils téléphoniques, en vue de procéder à des essais, comprend au moins un élément à semi-conducteurs changeant d'impédance connecté à chaque fil téléphonique, cet élément étant normalement conducteur, mais pouvant etre sélectivement amené dans un état de haute impédance dans lequel il déconnecte le matériel, pour ensuite revenir à l'état conducteur.A highly reliable high-speed remote isolation device for temporarily disconnecting subscriber telephone equipment from telephone wires for testing purposes includes at least one impedance-changing semiconductor element connected to each telephone wire, this element being normally conducting, but being able to be selectively brought into a state of high impedance in which it disconnects the material, to then return to the conducting state.

BE0/213931A 1983-10-31 1984-10-30 REMOTE ISOLATION DEVICE. BE900947A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US54684083A 1983-10-31 1983-10-31

Publications (1)

Publication Number Publication Date
BE900947A true BE900947A (en) 1985-02-15

Family

ID=24182250

Family Applications (1)

Application Number Title Priority Date Filing Date
BE0/213931A BE900947A (en) 1983-10-31 1984-10-30 REMOTE ISOLATION DEVICE.

Country Status (2)

Country Link
BE (1) BE900947A (en)
GB (1) GB2149274A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4200775C1 (en) * 1992-01-11 1993-05-19 Krone Ag, 1000 Berlin, De
TW264598B (en) * 1992-07-01 1995-12-01 Ray Chem Ltd
GB9213992D0 (en) * 1992-07-01 1992-08-12 Raychem Ltd Remotely actuated switch and protection circuit
GB9223770D0 (en) * 1992-11-12 1992-12-23 Raychem Ltd Communication channel testing arrangement
GB9403646D0 (en) * 1994-02-25 1994-04-13 Raychem Ltd Switching device for telecommunications channel
US6201853B1 (en) * 1999-07-13 2001-03-13 Communications Manufacturing Company Telephone technician's remote assist apparatus and method

Also Published As

Publication number Publication date
GB8426343D0 (en) 1984-11-21
GB2149274A (en) 1985-06-05

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: TERADYNE INC.

Effective date: 19861031