JPS51136204A - Light pcm group transmission relay monitoring - Google Patents
Light pcm group transmission relay monitoringInfo
- Publication number
- JPS51136204A JPS51136204A JP50061183A JP6118375A JPS51136204A JP S51136204 A JPS51136204 A JP S51136204A JP 50061183 A JP50061183 A JP 50061183A JP 6118375 A JP6118375 A JP 6118375A JP S51136204 A JPS51136204 A JP S51136204A
- Authority
- JP
- Japan
- Prior art keywords
- light
- group transmission
- transmission relay
- relay monitoring
- pcm group
- 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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Time-Division Multiplex Systems (AREA)
- Dc Digital Transmission (AREA)
- Optical Communication System (AREA)
Abstract
PURPOSE:Defective point recognition at end station.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50061183A JPS51136204A (en) | 1975-05-21 | 1975-05-21 | Light pcm group transmission relay monitoring |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50061183A JPS51136204A (en) | 1975-05-21 | 1975-05-21 | Light pcm group transmission relay monitoring |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS51136204A true JPS51136204A (en) | 1976-11-25 |
Family
ID=13163783
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50061183A Pending JPS51136204A (en) | 1975-05-21 | 1975-05-21 | Light pcm group transmission relay monitoring |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS51136204A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53100701A (en) * | 1977-02-15 | 1978-09-02 | Fujitsu Ltd | Transmission relay monitor system for optical pcm group |
JPS59167161A (en) * | 1983-03-11 | 1984-09-20 | Hitachi Ltd | Trouble position searching system of digital transmission line |
US6081557A (en) * | 1996-05-16 | 2000-06-27 | Nec Corporation | Datalink system and communication network |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4870446A (en) * | 1971-12-23 | 1973-09-25 | ||
JPS49103508A (en) * | 1973-02-05 | 1974-10-01 |
-
1975
- 1975-05-21 JP JP50061183A patent/JPS51136204A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4870446A (en) * | 1971-12-23 | 1973-09-25 | ||
JPS49103508A (en) * | 1973-02-05 | 1974-10-01 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53100701A (en) * | 1977-02-15 | 1978-09-02 | Fujitsu Ltd | Transmission relay monitor system for optical pcm group |
JPS5719902B2 (en) * | 1977-02-15 | 1982-04-24 | ||
JPS59167161A (en) * | 1983-03-11 | 1984-09-20 | Hitachi Ltd | Trouble position searching system of digital transmission line |
JPH0557789B2 (en) * | 1983-03-11 | 1993-08-24 | Hitachi Ltd | |
US6081557A (en) * | 1996-05-16 | 2000-06-27 | Nec Corporation | Datalink system and communication network |
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