NL271594A - - Google Patents
Info
- Publication number
- NL271594A NL271594A NL271594DA NL271594A NL 271594 A NL271594 A NL 271594A NL 271594D A NL271594D A NL 271594DA NL 271594 A NL271594 A NL 271594A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/08—Indicating faults in circuits or apparatus
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/22—Arrangements for supervision, monitoring or testing
- H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
- H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
- H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL271594 | 1961-11-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL271594A true NL271594A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family
ID=19753423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL271594D NL271594A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1961-11-20 |
Country Status (9)
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1800417B1 (de) * | 1968-10-01 | 1970-04-23 | Siemens Ag | Schaltungsanordnung zur UEberwachung des Signalzustandes von Signalleitungen und/oder Schalteinrichtungen zwecks Identifizierung und Erledigung von Schaltauftraegen durch eine zentrale Einrichtung in Fernmelde-,insbesondere Fernsprechanlagen |
| JPS5114205B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1970-01-29 | 1976-05-07 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE546458A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1955-03-28 | |||
| BE546459A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1955-03-28 | |||
| DE1022641B (de) * | 1955-05-27 | 1958-01-16 | Wilhelm Vershoven | Schaltungsanordnung fuer handbediente schlagwettergeschuetzte Fernsprechvermittlungsstellen |
| US3064090A (en) * | 1960-09-29 | 1962-11-13 | Bell Telephone Labor Inc | Line testing circuit |
-
0
- NL NL271594D patent/NL271594A/xx unknown
- BE BE625034D patent/BE625034A/xx unknown
-
1962
- 1962-11-13 US US236902A patent/US3238312A/en not_active Expired - Lifetime
- 1962-11-16 DE DEN22364A patent/DE1172323B/de active Pending
- 1962-11-16 GB GB43461/62A patent/GB987089A/en not_active Expired
- 1962-11-17 CH CH1348162A patent/CH407317A/de unknown
- 1962-11-17 DK DK495662AA patent/DK107235C/da active
- 1962-11-19 SE SE12393/62A patent/SE302627B/xx unknown
- 1962-11-19 FR FR915837A patent/FR1340439A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1340439A (fr) | 1963-10-18 |
| SE302627B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1968-07-29 |
| DK107235C (da) | 1967-05-08 |
| GB987089A (en) | 1965-03-24 |
| BE625034A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | |
| CH407317A (de) | 1966-02-15 |
| US3238312A (en) | 1966-03-01 |
| DE1172323B (de) | 1964-06-18 |