BE823865A - PROTECTION SYSTEM AGAINST ABNORMAL VOLTAGES APPLICABLE IN TELEPHONE SWITCHES - Google Patents
PROTECTION SYSTEM AGAINST ABNORMAL VOLTAGES APPLICABLE IN TELEPHONE SWITCHESInfo
- Publication number
- BE823865A BE823865A BE2054060A BE2054060A BE823865A BE 823865 A BE823865 A BE 823865A BE 2054060 A BE2054060 A BE 2054060A BE 2054060 A BE2054060 A BE 2054060A BE 823865 A BE823865 A BE 823865A
- Authority
- BE
- Belgium
- Prior art keywords
- protection system
- system against
- against abnormal
- telephone switches
- abnormal voltages
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
- H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7346497A FR2256610B1 (en) | 1973-12-27 | 1973-12-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
BE823865A true BE823865A (en) | 1975-06-27 |
Family
ID=9129754
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE2054060A BE823865A (en) | 1973-12-27 | 1974-12-27 | PROTECTION SYSTEM AGAINST ABNORMAL VOLTAGES APPLICABLE IN TELEPHONE SWITCHES |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE823865A (en) |
DE (1) | DE2459926B2 (en) |
FR (1) | FR2256610B1 (en) |
GB (1) | GB1452428A (en) |
-
1973
- 1973-12-27 FR FR7346497A patent/FR2256610B1/fr not_active Expired
-
1974
- 1974-12-10 GB GB5332574A patent/GB1452428A/en not_active Expired
- 1974-12-18 DE DE19742459926 patent/DE2459926B2/en not_active Withdrawn
- 1974-12-27 BE BE2054060A patent/BE823865A/en unknown
Also Published As
Publication number | Publication date |
---|---|
FR2256610B1 (en) | 1977-08-12 |
FR2256610A1 (en) | 1975-07-25 |
GB1452428A (en) | 1976-10-13 |
DE2459926B2 (en) | 1980-01-31 |
DE2459926A1 (en) | 1975-07-10 |
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