JPS56986B2 - - Google Patents
Info
- Publication number
- JPS56986B2 JPS56986B2 JP1002772A JP1002772A JPS56986B2 JP S56986 B2 JPS56986 B2 JP S56986B2 JP 1002772 A JP1002772 A JP 1002772A JP 1002772 A JP1002772 A JP 1002772A JP S56986 B2 JPS56986 B2 JP S56986B2
- 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.)
- Expired
Links
Classifications
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- 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
- H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1002772A JPS56986B2 (en) | 1972-01-26 | 1972-01-26 | |
| DE19732303820 DE2303820C2 (en) | 1972-01-26 | 1973-01-26 | Fault detection in multi-channel digital microwave relay system - distinguishing individual faults from common faults e.g. due to rain |
| IT1971273A IT978558B (en) | 1972-01-26 | 1973-01-26 | DEVICE FOR TROUBLESHOOTING PARTICULARLY USEFUL IN A MULTIPLE LI CHANNEL REPEATER SYSTEM |
| US423613A US3882456A (en) | 1972-01-26 | 1973-12-10 | Fault-detecting system for a multi-channel relay system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1002772A JPS56986B2 (en) | 1972-01-26 | 1972-01-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4879914A JPS4879914A (en) | 1973-10-26 |
| JPS56986B2 true JPS56986B2 (en) | 1981-01-10 |
Family
ID=11738901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1002772A Expired JPS56986B2 (en) | 1972-01-26 | 1972-01-26 |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS56986B2 (en) |
| DE (1) | DE2303820C2 (en) |
| IT (1) | IT978558B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52109303A (en) * | 1976-03-10 | 1977-09-13 | Hitachi Ltd | By-pass change-over system |
| JPH0810850B2 (en) * | 1987-03-20 | 1996-01-31 | 日本電信電話株式会社 | Interference measurement method in mobile communication |
| DE19649305A1 (en) * | 1996-11-28 | 1998-06-04 | Alsthom Cge Alcatel | Hybrid transmission system with fallback for links with high availability requirements |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH443421A (en) * | 1965-05-06 | 1967-09-15 | Sits Soc It Telecom Siemens | Arrangement of circuits designed to control the operation-reserve switching in a plurality of Hertzian channels, consisting of several operation channels and a single reserve channel |
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1972
- 1972-01-26 JP JP1002772A patent/JPS56986B2/ja not_active Expired
-
1973
- 1973-01-26 DE DE19732303820 patent/DE2303820C2/en not_active Expired
- 1973-01-26 IT IT1971273A patent/IT978558B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| DE2303820A1 (en) | 1973-08-02 |
| JPS4879914A (en) | 1973-10-26 |
| DE2303820C2 (en) | 1983-01-05 |
| IT978558B (en) | 1974-09-20 |