JPS5124325B1 - - Google Patents
Info
- Publication number
- JPS5124325B1 JPS5124325B1 JP46089158A JP8915871A JPS5124325B1 JP S5124325 B1 JPS5124325 B1 JP S5124325B1 JP 46089158 A JP46089158 A JP 46089158A JP 8915871 A JP8915871 A JP 8915871A JP S5124325 B1 JPS5124325 B1 JP S5124325B1
- Authority
- JP
- Japan
- 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.)
- Pending
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 (1)
| Publication Number | Publication Date |
|---|---|
| JPS5124325B1 true JPS5124325B1 (ja) | 1976-07-23 |
Family
ID=22210555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP46089158A Pending JPS5124325B1 (ja) | 1970-11-10 | 1971-11-10 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3651284A (ja) |
| JP (1) | JPS5124325B1 (ja) |
| BE (1) | BE775050A (ja) |
| DE (1) | DE2155610B2 (ja) |
| FR (1) | FR2113880B1 (ja) |
| GB (1) | GB1358910A (ja) |
| SE (1) | SE369462B (ja) |
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/xx 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 |
|---|---|
| FR2113880B1 (ja) | 1976-12-03 |
| DE2155610B2 (de) | 1973-10-25 |
| DE2155610A1 (de) | 1972-05-18 |
| SE369462B (ja) | 1974-08-26 |
| US3651284A (en) | 1972-03-21 |
| FR2113880A1 (ja) | 1972-06-30 |
| GB1358910A (en) | 1974-07-03 |
| BE775050A (fr) | 1972-03-01 |