JPS5480019A - Test method for communication circuit - Google Patents
Test method for communication circuitInfo
- Publication number
- JPS5480019A JPS5480019A JP14786377A JP14786377A JPS5480019A JP S5480019 A JPS5480019 A JP S5480019A JP 14786377 A JP14786377 A JP 14786377A JP 14786377 A JP14786377 A JP 14786377A JP S5480019 A JPS5480019 A JP S5480019A
- Authority
- JP
- Japan
- Prior art keywords
- unit
- circuit
- test
- terminal unit
- maintainer
- 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.)
- Pending
Links
Landscapes
- Monitoring And Testing Of Exchanges (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
PURPOSE: To secure easy decision for the quality of the optional circuit by transmitting the test signal with every communication circuit from the circuit test unit of the station where the maintainer resides to the terminal unit and the like and then detecting the return of the test signal from the terminal unit.
CONSTITUTION: Circuit test unit 2, 7 and 12 are provided between end office device 1 where the maintainer resides and multiple carrier end office device 3, between multiple carrier end device 6 where no maintainer resides and multiple carrier end device 9 and between device 6 and terminal unit 8 such as the FAX or telemeter device, etc. furthermore between multiple carrier end office device 12 and the terminal unit respectively. The test signal is transmitted to the terminal unit and the like from circuit test unit 2 with every these communication circuits. And when the test signal is received at the terminal unit, the signal is transmitted automatically to the circuit test unit. The test unit detects the presence or absence of the test signal returned. Thus, the quality of the optional circuit can be decided by unit 2 of station 101 where the maintainer resides.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14786377A JPS5480019A (en) | 1977-12-08 | 1977-12-08 | Test method for communication circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14786377A JPS5480019A (en) | 1977-12-08 | 1977-12-08 | Test method for communication circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5480019A true JPS5480019A (en) | 1979-06-26 |
Family
ID=15439943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14786377A Pending JPS5480019A (en) | 1977-12-08 | 1977-12-08 | Test method for communication circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5480019A (en) |
-
1977
- 1977-12-08 JP JP14786377A patent/JPS5480019A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6486643A (en) | Multi-medium mail system | |
| JPS5778237A (en) | Fault detection system for control channel of radio telephone set | |
| JPS5480019A (en) | Test method for communication circuit | |
| JPS57125550A (en) | Data collecting system | |
| JPS5784645A (en) | By-pass circuit | |
| JPS5459810A (en) | Signal waveform transmission system | |
| JPS56161750A (en) | Synchronizing system in telephone set | |
| JPS57160258A (en) | Circuit switching device | |
| JPS556628A (en) | Fault transfer systen | |
| JPS54918A (en) | Facsimile transmission system | |
| JPS5451702A (en) | Automatic power supply cut-off circuit | |
| JPS5390707A (en) | Detecting system for circuit fault | |
| JPS5537013A (en) | Facsimile device | |
| JPS5662436A (en) | Optical multiplex transmission system | |
| JPS5624848A (en) | Communication control device | |
| JPS5433609A (en) | Order line communication system for scpc | |
| JPS53133316A (en) | Urgent interruption communication system | |
| JPS548410A (en) | Two-way signal transmitting device | |
| JPS5487425A (en) | Still-picture video telephone set | |
| JPS5582547A (en) | Self check system of radio terminal station | |
| JPS57152265A (en) | Preventing device for holding of telephone circuit by communication equipment | |
| JPS5539410A (en) | Increasing method of transmission efficiency for data communication | |
| JPS53111227A (en) | Communication device for multiple access | |
| JPS5676661A (en) | Data transmission control circuit | |
| JPS57178447A (en) | Loop data transmission system |