JPS57127345A - Detecting system of faulty area - Google Patents
Detecting system of faulty areaInfo
- Publication number
- JPS57127345A JPS57127345A JP1254881A JP1254881A JPS57127345A JP S57127345 A JPS57127345 A JP S57127345A JP 1254881 A JP1254881 A JP 1254881A JP 1254881 A JP1254881 A JP 1254881A JP S57127345 A JPS57127345 A JP S57127345A
- Authority
- JP
- Japan
- Prior art keywords
- repeater
- office
- fault
- optical
- code rule
- 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.)
- 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
- H04B17/403—Monitoring; Testing of relay systems with selective localization using different frequencies generated by local oscillators
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1254881A JPS57127345A (en) | 1981-01-30 | 1981-01-30 | Detecting system of faulty area |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1254881A JPS57127345A (en) | 1981-01-30 | 1981-01-30 | Detecting system of faulty area |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57127345A true JPS57127345A (en) | 1982-08-07 |
Family
ID=11808380
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1254881A Pending JPS57127345A (en) | 1981-01-30 | 1981-01-30 | Detecting system of faulty area |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57127345A (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2456127A1 (en) * | 2009-09-28 | 2012-05-23 | ZTE Corporation | Method, system and apparatus for diagnosing physical downlink failure |
-
1981
- 1981-01-30 JP JP1254881A patent/JPS57127345A/ja active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2456127A1 (en) * | 2009-09-28 | 2012-05-23 | ZTE Corporation | Method, system and apparatus for diagnosing physical downlink failure |
EP2456127A4 (en) * | 2009-09-28 | 2014-06-25 | Zte Corp | METHOD, SYSTEM AND APPARATUS FOR DIAGNOSING DOWNLINK PHYSICAL LINK FAILURE |
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