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
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.
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)
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 |
-
1984
- 1984-10-18 GB GB08426343A patent/GB2149274A/en not_active Withdrawn
- 1984-10-30 BE BE0/213931A patent/BE900947A/en not_active IP Right Cessation
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 |