FR2113880B1 - - Google Patents
Info
- Publication number
- FR2113880B1 FR2113880B1 FR7140097A FR7140097A FR2113880B1 FR 2113880 B1 FR2113880 B1 FR 2113880B1 FR 7140097 A FR7140097 A FR 7140097A FR 7140097 A FR7140097 A FR 7140097A FR 2113880 B1 FR2113880 B1 FR 2113880B1
- Authority
- FR
- France
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/40—Monitoring; Testing of relay systems
- H04B17/401—Monitoring; Testing of relay systems with selective localization
- H04B17/402—Monitoring; Testing of relay systems with selective localization using different frequencies
- H04B17/404—Monitoring; Testing of relay systems with selective localization using different frequencies selected by local filters
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US8829770A | 1970-11-10 | 1970-11-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2113880A1 FR2113880A1 (fr) | 1972-06-30 |
FR2113880B1 true FR2113880B1 (fr) | 1976-12-03 |
Family
ID=22210555
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7140097A Expired FR2113880B1 (fr) | 1970-11-10 | 1971-11-09 |
Country Status (7)
Country | Link |
---|---|
US (1) | US3651284A (fr) |
JP (1) | JPS5124325B1 (fr) |
BE (1) | BE775050A (fr) |
DE (1) | DE2155610B2 (fr) |
FR (1) | FR2113880B1 (fr) |
GB (1) | GB1358910A (fr) |
SE (1) | SE369462B (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1369062A (en) * | 1971-01-29 | 1974-10-02 | Sits Soc It Telecom Siemens | Fault location system for use in the location of faults in both a pcm link between two terminal stations |
US3864528A (en) * | 1973-08-22 | 1975-02-04 | Bell Northern Research Ltd | Fault locating system for a digital transmission system |
US3909563A (en) * | 1973-11-06 | 1975-09-30 | Wescom | Procedure and apparatus for locating faults in digital repeatered lines |
DE2436373C3 (de) * | 1974-07-27 | 1983-02-24 | TE KA DE Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg | Fehlerortungsverfahren für Vierdraht-Trägerfrequenzsysteme |
US3917916A (en) * | 1974-08-29 | 1975-11-04 | Wescom | Method and means for interrogation of digital repeatered lines |
JPH0632517B2 (ja) * | 1985-07-19 | 1994-04-27 | ホーチキ株式会社 | 異常監視装置 |
US5323145A (en) * | 1992-03-02 | 1994-06-21 | Alcatel Network Systems, Inc. | Alarm collection architecture with redundant bus |
KR0143113B1 (ko) * | 1995-08-18 | 1998-08-01 | 김광호 | 중계 전송로에서 급전 불 평형 감지회로 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2315434A (en) * | 1940-07-03 | 1943-03-30 | Bell Telephone Labor Inc | Transmission system |
-
1970
- 1970-11-10 US US88297A patent/US3651284A/en not_active Expired - Lifetime
-
1971
- 1971-10-29 SE SE13792/71A patent/SE369462B/xx unknown
- 1971-11-04 GB GB5131371A patent/GB1358910A/en not_active Expired
- 1971-11-08 BE BE775050A patent/BE775050A/fr unknown
- 1971-11-09 DE DE2155610A patent/DE2155610B2/de not_active Ceased
- 1971-11-09 FR FR7140097A patent/FR2113880B1/fr not_active Expired
- 1971-11-10 JP JP46089158A patent/JPS5124325B1/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE2155610B2 (de) | 1973-10-25 |
DE2155610A1 (de) | 1972-05-18 |
SE369462B (fr) | 1974-08-26 |
US3651284A (en) | 1972-03-21 |
JPS5124325B1 (fr) | 1976-07-23 |
FR2113880A1 (fr) | 1972-06-30 |
GB1358910A (en) | 1974-07-03 |
BE775050A (fr) | 1972-03-01 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |