BE720273A - - Google Patents
Info
- Publication number
- BE720273A BE720273A BE720273DA BE720273A BE 720273 A BE720273 A BE 720273A BE 720273D A BE720273D A BE 720273DA BE 720273 A BE720273 A BE 720273A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/20—Testing circuits or apparatus; Circuits or apparatus for detecting, indicating, or signalling faults or troubles
- H04Q1/22—Automatic arrangements
- H04Q1/26—Automatic arrangements for signalling trouble in unoccupied sub-exchanges
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/40—Monitoring; Testing of relay systems
- H04B17/407—Monitoring; Testing of relay systems without selective localization
- H04B17/408—Monitoring; Testing of relay systems without selective localization using successive loop-backs
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Dc Digital Transmission (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB40019/67A GB1154647A (en) | 1967-09-01 | 1967-09-01 | Supervisory Circuit for Unattended Repeaters. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE720273A true BE720273A (xx) | 1969-03-03 |
Family
ID=10412764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE720273D BE720273A (xx) | 1967-09-01 | 1968-09-02 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3560670A (xx) |
| JP (1) | JPS4945606B1 (xx) |
| BE (1) | BE720273A (xx) |
| CH (1) | CH493170A (xx) |
| ES (1) | ES357628A1 (xx) |
| FR (1) | FR1599741A (xx) |
| GB (1) | GB1154647A (xx) |
| NL (1) | NL6812348A (xx) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7105347A (xx) * | 1971-04-21 | 1972-10-24 | ||
| US3856996A (en) * | 1971-06-14 | 1974-12-24 | D Greenberg | Self-test arrangement for an entertainment-service system |
| US3814839A (en) * | 1972-05-08 | 1974-06-04 | Telecommunications Technology | Remote digital switching technique for use on communications circuits |
| NL171512C (nl) * | 1972-08-24 | 1983-04-05 | Philips Nv | Foutlokalisatiesysteem voor lijnversterkers van versterkerstations in een transmissielijn. |
| JPS49107852U (xx) * | 1972-12-29 | 1974-09-13 | ||
| GB1465909A (en) * | 1973-12-18 | 1977-03-02 | Plessey Co Ltd | Supervisory systems for telecommunication line transmission system |
| JPS50125619A (xx) * | 1974-03-19 | 1975-10-02 | ||
| DE2436373C3 (de) * | 1974-07-27 | 1983-02-24 | TE KA DE Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg | Fehlerortungsverfahren für Vierdraht-Trägerfrequenzsysteme |
| JPS532127U (xx) * | 1976-06-24 | 1978-01-10 | ||
| US4161634A (en) * | 1978-07-31 | 1979-07-17 | Bell Telephone Laboratories, Incorporated | Count-down addressing system |
| US4161635A (en) * | 1978-07-31 | 1979-07-17 | Bell Telephone Laboratories, Incorporated | Address verification system |
| US20080198827A1 (en) * | 2007-02-21 | 2008-08-21 | At&T Knowledge Ventures, Lp | System for sharing cabling in a building |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1074089B (de) * | 1956-06-15 | 1960-01-28 | Compagnie Generale d'Electricite Paris | Anordnung zur Überwachung von Übertragungssystemen großer Länge mit ferngespeisten Verstärkerstationen |
| US3054865A (en) * | 1959-12-16 | 1962-09-18 | British Telecomm Res Ltd | Means for locating an inoperative signalling repeater |
-
1967
- 1967-09-01 GB GB40019/67A patent/GB1154647A/en not_active Expired
-
1968
- 1968-07-02 JP JP4566468A patent/JPS4945606B1/ja active Pending
- 1968-08-27 US US755583A patent/US3560670A/en not_active Expired - Lifetime
- 1968-08-27 CH CH1283868A patent/CH493170A/de not_active IP Right Cessation
- 1968-08-28 ES ES357628A patent/ES357628A1/es not_active Expired
- 1968-08-30 NL NL6812348A patent/NL6812348A/xx not_active Application Discontinuation
- 1968-09-02 BE BE720273D patent/BE720273A/xx unknown
- 1968-09-02 FR FR1599741D patent/FR1599741A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1599741A (xx) | 1970-07-20 |
| NL6812348A (xx) | 1969-03-04 |
| US3560670A (en) | 1971-02-02 |
| CH493170A (de) | 1970-06-30 |
| GB1154647A (en) | 1969-06-11 |
| ES357628A1 (es) | 1970-03-16 |
| JPS4945606B1 (xx) | 1974-12-05 |