DE3885329D1 - Fernunterbrechung und Kurzschlussgerät. - Google Patents
Fernunterbrechung und Kurzschlussgerät.Info
- Publication number
- DE3885329D1 DE3885329D1 DE88303366T DE3885329T DE3885329D1 DE 3885329 D1 DE3885329 D1 DE 3885329D1 DE 88303366 T DE88303366 T DE 88303366T DE 3885329 T DE3885329 T DE 3885329T DE 3885329 D1 DE3885329 D1 DE 3885329D1
- Authority
- DE
- Germany
- Prior art keywords
- conductors
- pair
- short circuit
- tone
- mode
- 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 - Lifetime
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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Alarm Systems (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Locating Faults (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Burglar Alarm Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPI147387 | 1987-04-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3885329D1 true DE3885329D1 (de) | 1993-12-09 |
DE3885329T2 DE3885329T2 (de) | 1994-05-26 |
Family
ID=3772120
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3885329T Expired - Lifetime DE3885329T2 (de) | 1987-04-14 | 1988-04-14 | Fernunterbrechung und Kurzschlussgerät. |
Country Status (7)
Country | Link |
---|---|
US (1) | US4862491A (de) |
EP (1) | EP0287369B1 (de) |
JP (1) | JPS6447135A (de) |
AT (1) | ATE96963T1 (de) |
CA (1) | CA1282883C (de) |
DE (1) | DE3885329T2 (de) |
ES (1) | ES2050156T3 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4985917A (en) * | 1989-08-17 | 1991-01-15 | Altimier Jr David F | Personal artificial loop (p.a.l.) |
GB9213992D0 (en) * | 1992-07-01 | 1992-08-12 | Raychem Ltd | Remotely actuated switch and protection circuit |
GB9218134D0 (en) * | 1992-08-26 | 1992-10-14 | Raychem Sa Nv | Communication channel switching arrangement |
US5550894A (en) * | 1992-11-20 | 1996-08-27 | Atlas Telecom International Ltd. | Device for sequentially altering a communication line for remote diagnostic checks |
US5721524A (en) * | 1995-06-07 | 1998-02-24 | Power Parts, Inc. | Stator apparatus for small engine ignition system having improved grounding arrangement |
GB9602247D0 (en) * | 1996-02-05 | 1996-04-03 | British Telecomm | Telecommunications networks |
US5771285A (en) * | 1996-02-07 | 1998-06-23 | Lucent Technologies | Circuit and method for detecting telephone line status and telephone instrument embodying the same |
US5825850A (en) * | 1996-10-02 | 1998-10-20 | Time Warner Entertainment Co. L.P. | Automatic bypass switch for signal conductor |
AUPO694997A0 (en) * | 1997-05-22 | 1997-06-12 | Teletech Pty. Ltd. | Remote testing of a communications line |
SE9800249L (sv) * | 1998-01-29 | 1999-07-30 | Telia Ab | Förbättringar av, eller med avseende på, telekommunikationer |
US6160405A (en) * | 1998-03-30 | 2000-12-12 | Jovial Test Equipment, Inc. | Method and apparatus for remotely changing signal characteristics of a signal generator |
US6292541B1 (en) * | 1998-11-10 | 2001-09-18 | Pittway Corporation | Line shunt and ground fault apparatus method |
US6212258B1 (en) * | 1998-11-25 | 2001-04-03 | Westell Technologies, Inc. | Device for remotely testing a twisted pair transmission line |
US7010096B1 (en) * | 1999-11-24 | 2006-03-07 | Teletech Pty., Ltd. | Remote testing of a communications line |
GB2368487A (en) * | 2000-10-25 | 2002-05-01 | Alan Robert Perrett | Remote testing system |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3843848A (en) * | 1973-01-12 | 1974-10-22 | Magnetic Controls Co | Telephone looptest system |
US3912882A (en) * | 1973-12-07 | 1975-10-14 | Tm Systems | Remote loop-back terminating unit for testing telephone |
GB2118000B (en) * | 1982-04-05 | 1985-10-02 | Gen Electric Co Plc | Telecommunication system loop-back unit |
US4536703A (en) * | 1982-05-27 | 1985-08-20 | At&T Technologies, Inc. | Method and apparatus for testing cable wire connected to terminals at a remote location |
US4489220A (en) * | 1983-06-08 | 1984-12-18 | International Teldata Ii Corp. | Test set |
US4550225A (en) * | 1983-10-31 | 1985-10-29 | Keptel, Inc. | AC Signal-activated switching apparatus |
US4581494A (en) * | 1984-10-09 | 1986-04-08 | James A. Mayberry | Telephone interface-test device |
US4686696A (en) * | 1985-12-02 | 1987-08-11 | Keptel, Inc. | Transmission line signal sensing circuit employing means for conserving power, especially for use with a telephone disconnect circuit, and associated method |
-
1988
- 1988-04-13 US US07/181,533 patent/US4862491A/en not_active Expired - Lifetime
- 1988-04-14 AT AT88303366T patent/ATE96963T1/de not_active IP Right Cessation
- 1988-04-14 ES ES88303366T patent/ES2050156T3/es not_active Expired - Lifetime
- 1988-04-14 EP EP88303366A patent/EP0287369B1/de not_active Expired - Lifetime
- 1988-04-14 JP JP9263688A patent/JPS6447135A/ja active Pending
- 1988-04-14 DE DE3885329T patent/DE3885329T2/de not_active Expired - Lifetime
- 1988-04-14 CA CA000564200A patent/CA1282883C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0287369A3 (en) | 1989-09-13 |
ES2050156T3 (es) | 1994-05-16 |
DE3885329T2 (de) | 1994-05-26 |
JPS6447135A (en) | 1989-02-21 |
US4862491A (en) | 1989-08-29 |
EP0287369A2 (de) | 1988-10-19 |
CA1282883C (en) | 1991-04-09 |
ATE96963T1 (de) | 1993-11-15 |
EP0287369B1 (de) | 1993-11-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |