JPS5615174B2 - - Google Patents
Info
- Publication number
- JPS5615174B2 JPS5615174B2 JP9377573A JP9377573A JPS5615174B2 JP S5615174 B2 JPS5615174 B2 JP S5615174B2 JP 9377573 A JP9377573 A JP 9377573A JP 9377573 A JP9377573 A JP 9377573A JP S5615174 B2 JPS5615174 B2 JP S5615174B2
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/40—Monitoring; Testing of relay systems
- H04B17/401—Monitoring; Testing of relay systems with selective localization
- H04B17/402—Monitoring; Testing of relay systems with selective localization using different frequencies
- H04B17/403—Monitoring; Testing of relay systems with selective localization using different frequencies generated by local oscillators
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NLAANVRAGE7211531,A NL171512C (nl) | 1972-08-24 | 1972-08-24 | Foutlokalisatiesysteem voor lijnversterkers van versterkerstations in een transmissielijn. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4965118A JPS4965118A (en:Method) | 1974-06-24 |
| JPS5615174B2 true JPS5615174B2 (en:Method) | 1981-04-08 |
Family
ID=19816779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9377573A Expired JPS5615174B2 (en:Method) | 1972-08-24 | 1973-08-21 |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US3904827A (en:Method) |
| JP (1) | JPS5615174B2 (en:Method) |
| AR (1) | AR196940A1 (en:Method) |
| AT (1) | AT331861B (en:Method) |
| BE (1) | BE803911A (en:Method) |
| CA (1) | CA1005179A (en:Method) |
| CH (1) | CH563085A5 (en:Method) |
| DE (1) | DE2339705C2 (en:Method) |
| DK (1) | DK133488B (en:Method) |
| FR (1) | FR2197283B1 (en:Method) |
| GB (1) | GB1446193A (en:Method) |
| NL (1) | NL171512C (en:Method) |
| SE (1) | SE380698B (en:Method) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2436373C3 (de) * | 1974-07-27 | 1983-02-24 | TE KA DE Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg | Fehlerortungsverfahren für Vierdraht-Trägerfrequenzsysteme |
| DE2945392C2 (de) * | 1979-11-09 | 1985-06-27 | Siemens AG, 1000 Berlin und 8000 München | Fehlerortung für digitale Übertragungsstrecken mit höherer Übertragungsgeschwindigkeit |
| DE2949639C2 (de) * | 1979-12-10 | 1985-10-10 | Siemens AG, 1000 Berlin und 8000 München | Überwachung von Übertragungsstrecken für digitale Signale mit höherer Übertragungsgeschwindigkeit |
| GB2075311B (en) * | 1980-08-26 | 1984-10-03 | Standard Telephones Cables Ltd | Supervision of transmission systems |
| US4642426A (en) * | 1984-12-10 | 1987-02-10 | Gte Communication Systems Corporation | Apparatus for locating faults in a carrier subscriber communication system |
| DE3522446C1 (de) * | 1985-06-22 | 1986-08-07 | ANT Nachrichtentechnik GmbH, 7150 Backnang | Schaltungsanordnung zur Fehlerortung für eine Leitungsübertragunseinrichtung |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3450847A (en) * | 1966-07-28 | 1969-06-17 | Bell Telephone Labor Inc | Method and apparatus for monitoring the operation of unattended amplifiers |
| DE1287644B (en:Method) * | 1967-03-29 | 1969-01-23 | ||
| GB1154647A (en) * | 1967-09-01 | 1969-06-11 | Standard Telephones Cables Ltd | Supervisory Circuit for Unattended Repeaters. |
| DE1937697B2 (de) * | 1969-07-24 | 1971-03-04 | Einrichtung zur fehlerortung bei traegerfrequenz systemen | |
| DE1941492C2 (de) * | 1969-08-14 | 1973-09-20 | Siemens Ag, 1000 Berlin U. 8000 Muenchen | Verfahren u. Fehlerortung bei einer Trägerfrequenz -Nachrichtenübertragungsstrecke |
| JPS5219926B2 (en:Method) * | 1972-06-05 | 1977-05-31 |
-
1972
- 1972-08-24 NL NLAANVRAGE7211531,A patent/NL171512C/xx not_active IP Right Cessation
-
1973
- 1973-06-27 AR AR248782A patent/AR196940A1/es active
- 1973-08-06 DE DE2339705A patent/DE2339705C2/de not_active Expired
- 1973-08-15 US US388387A patent/US3904827A/en not_active Expired - Lifetime
- 1973-08-20 CA CA179,215A patent/CA1005179A/en not_active Expired
- 1973-08-21 CH CH1203473A patent/CH563085A5/xx not_active IP Right Cessation
- 1973-08-21 GB GB3937973A patent/GB1446193A/en not_active Expired
- 1973-08-21 DK DK459973AA patent/DK133488B/da unknown
- 1973-08-21 SE SE7311380A patent/SE380698B/xx unknown
- 1973-08-21 JP JP9377573A patent/JPS5615174B2/ja not_active Expired
- 1973-08-21 AT AT729673A patent/AT331861B/de not_active IP Right Cessation
- 1973-08-22 BE BE134841A patent/BE803911A/xx not_active IP Right Cessation
- 1973-08-23 FR FR7330550A patent/FR2197283B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DK133488C (en:Method) | 1976-10-11 |
| BE803911A (fr) | 1974-02-22 |
| DE2339705C2 (de) | 1984-08-23 |
| US3904827A (en) | 1975-09-09 |
| AR196940A1 (es) | 1974-02-28 |
| CA1005179A (en) | 1977-02-08 |
| NL7211531A (en:Method) | 1974-02-26 |
| JPS4965118A (en:Method) | 1974-06-24 |
| GB1446193A (en) | 1976-08-18 |
| DE2339705A1 (de) | 1974-02-28 |
| DK133488B (da) | 1976-05-24 |
| FR2197283A1 (en:Method) | 1974-03-22 |
| FR2197283B1 (en:Method) | 1978-03-10 |
| ATA729673A (de) | 1975-12-15 |
| AT331861B (de) | 1976-08-25 |
| NL171512B (nl) | 1982-11-01 |
| CH563085A5 (en:Method) | 1975-06-13 |
| SE380698B (sv) | 1975-11-10 |
| AU5936473A (en) | 1975-02-20 |
| NL171512C (nl) | 1983-04-05 |