FR2270737A1 - Telephone exchange signal level survey system - uses selector of distributor to monitor selected points at regular intervals - Google Patents
Telephone exchange signal level survey system - uses selector of distributor to monitor selected points at regular intervalsInfo
- Publication number
- FR2270737A1 FR2270737A1 FR7416240A FR7416240A FR2270737A1 FR 2270737 A1 FR2270737 A1 FR 2270737A1 FR 7416240 A FR7416240 A FR 7416240A FR 7416240 A FR7416240 A FR 7416240A FR 2270737 A1 FR2270737 A1 FR 2270737A1
- Authority
- FR
- France
- Prior art keywords
- signal level
- telephone exchange
- distributor
- selector
- regular intervals
- Prior art date
- 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.)
- Granted
Links
- 239000000523 sample Substances 0.000 abstract 3
- 238000005259 measurement Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7416240A FR2270737A1 (en) | 1974-05-10 | 1974-05-10 | Telephone exchange signal level survey system - uses selector of distributor to monitor selected points at regular intervals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7416240A FR2270737A1 (en) | 1974-05-10 | 1974-05-10 | Telephone exchange signal level survey system - uses selector of distributor to monitor selected points at regular intervals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2270737A1 true FR2270737A1 (en) | 1975-12-05 |
| FR2270737B1 FR2270737B1 (https=) | 1978-10-27 |
Family
ID=9138684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7416240A Granted FR2270737A1 (en) | 1974-05-10 | 1974-05-10 | Telephone exchange signal level survey system - uses selector of distributor to monitor selected points at regular intervals |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2270737A1 (https=) |
-
1974
- 1974-05-10 FR FR7416240A patent/FR2270737A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2270737B1 (https=) | 1978-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4016557A (en) | Automatic gain controlled amplifier apparatus | |
| US3842247A (en) | Apparatus and method for measuring envelope delay utilizing {90 -point technique | |
| SE8601959D0 (sv) | Method and apparatus for testing communication systems | |
| US5063353A (en) | Method for accurate measurement of transmission line impedance by correcting gross impedance for the "dribble-up" effect | |
| US2891217A (en) | Noise figure meter | |
| GB970736A (en) | Improvements in or relating to pulse communication systems | |
| CA1061409A (en) | Method and apparatus for testing transmission lines | |
| FR2270737A1 (en) | Telephone exchange signal level survey system - uses selector of distributor to monitor selected points at regular intervals | |
| GB1139007A (en) | Improvements in electrical insulation testing and fault locating systems | |
| US3365716A (en) | Doppler radar devices | |
| US3439266A (en) | Method of and system for heterodyning employing a single source of signals | |
| US3875395A (en) | Arrangement for and method of obtaining a first, second or following derivative of a titration curve | |
| US3466553A (en) | Control circuit for a sampling system | |
| SU1219988A1 (ru) | Способ определени рассто ни до места повреждени линий электропередачи и св зи | |
| JPS5322757A (en) | Testing apparatus of electric a ppliances | |
| JPS6457189A (en) | Method for counting discrete pulse | |
| SU372513A1 (ru) | Способ измерения динамического контактного сопротивления в прецизионной скользящей паре | |
| JPS5262072A (en) | Device for measuring observation waveforms of oscilloscope | |
| HITCH | Reproducible adhesion test for soldered thick-film conductors[Final Report, 30 Jun. 1976- 30 Jun. 1977] | |
| SU419900A1 (ru) | Устройство для определения относительноговремени пребывания случайного процессав заданном интервале | |
| SU590692A1 (ru) | Устройство измерени временных интервалов | |
| SU413449A1 (https=) | ||
| SU570709A1 (ru) | Устройсто дл контрол местонахождени горного комбайна | |
| FR2318469A1 (fr) | Appareil a dessiner des circuits hydrauliques | |
| SU646343A1 (ru) | Устройство дл определени показател помехоустойчивости дискретных блоков |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |