JPS5474616A - Tester for digital incoming line - Google Patents
Tester for digital incoming lineInfo
- Publication number
- JPS5474616A JPS5474616A JP14253177A JP14253177A JPS5474616A JP S5474616 A JPS5474616 A JP S5474616A JP 14253177 A JP14253177 A JP 14253177A JP 14253177 A JP14253177 A JP 14253177A JP S5474616 A JPS5474616 A JP S5474616A
- Authority
- JP
- Japan
- Prior art keywords
- lines
- test
- signal
- channel
- tester
- 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
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
- H04M3/24—Arrangements for supervision, monitoring or testing with provision for checking the normal operation
- H04M3/244—Arrangements for supervision, monitoring or testing with provision for checking the normal operation for multiplex systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Time-Division Multiplex Systems (AREA)
Abstract
PURPOSE:To enable to perform the test for specific channel, without giving any effect to other channels, by using the dropper inserter circuit, selector and designation line corresponding to the digital lines of a plurality. CONSTITUTION:a plurality of selectors 12-1, 12-2, 13-1 and 13-2 are provided according to the digital lines 19, and have the designated lines 8, 9 designating the line and channel to test the digital lines 19, frame synchronizing circuit 23 and frame synchronizing circuit of signal. Further, the dropper, inserter circuits 4, 5, 6 and 7 are commonly provided for a plurality of selectors 12-1, 12-2, 13-1 and 13-2, audio and signal of the channel designated with the designation lines 8 and 9 are picked up and audio and signal are newly inserted. Thus, the test for specific channel can be made without giving effect to other channels.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14253177A JPS5842979B2 (en) | 1977-11-28 | 1977-11-28 | Digital input line tester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14253177A JPS5842979B2 (en) | 1977-11-28 | 1977-11-28 | Digital input line tester |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5474616A true JPS5474616A (en) | 1979-06-14 |
JPS5842979B2 JPS5842979B2 (en) | 1983-09-22 |
Family
ID=15317515
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14253177A Expired JPS5842979B2 (en) | 1977-11-28 | 1977-11-28 | Digital input line tester |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5842979B2 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5665560A (en) * | 1979-11-01 | 1981-06-03 | Nec Corp | Test system of time sharing multiplex line directly accommodated in time sharing exchanger |
JPS56138394A (en) * | 1980-03-31 | 1981-10-28 | Nec Corp | Test system of time sharing exchanger spare system |
JPS56147548A (en) * | 1980-04-17 | 1981-11-16 | Nec Corp | Test method for digital subscriber line carrier system |
JPS5840959A (en) * | 1981-09-04 | 1983-03-10 | Hitachi Ltd | Highway draw-in system for test of time shared channel |
JPS592476A (en) * | 1982-06-28 | 1984-01-09 | Nec Corp | System for testing digital signal generator |
JPS59152855U (en) * | 1983-03-29 | 1984-10-13 | 日本電気株式会社 | highway monitoring device |
JPS6072459A (en) * | 1983-09-29 | 1985-04-24 | Oki Electric Ind Co Ltd | Signal monitoring system |
JPH01177753A (en) * | 1988-01-08 | 1989-07-14 | Fujitsu Ltd | Voice channel data extraction/insertion circuit |
-
1977
- 1977-11-28 JP JP14253177A patent/JPS5842979B2/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5665560A (en) * | 1979-11-01 | 1981-06-03 | Nec Corp | Test system of time sharing multiplex line directly accommodated in time sharing exchanger |
JPS56138394A (en) * | 1980-03-31 | 1981-10-28 | Nec Corp | Test system of time sharing exchanger spare system |
JPS56147548A (en) * | 1980-04-17 | 1981-11-16 | Nec Corp | Test method for digital subscriber line carrier system |
JPS6361823B2 (en) * | 1980-04-17 | 1988-11-30 | ||
JPS5840959A (en) * | 1981-09-04 | 1983-03-10 | Hitachi Ltd | Highway draw-in system for test of time shared channel |
JPS592476A (en) * | 1982-06-28 | 1984-01-09 | Nec Corp | System for testing digital signal generator |
JPS59152855U (en) * | 1983-03-29 | 1984-10-13 | 日本電気株式会社 | highway monitoring device |
JPS6072459A (en) * | 1983-09-29 | 1985-04-24 | Oki Electric Ind Co Ltd | Signal monitoring system |
JPH01177753A (en) * | 1988-01-08 | 1989-07-14 | Fujitsu Ltd | Voice channel data extraction/insertion circuit |
Also Published As
Publication number | Publication date |
---|---|
JPS5842979B2 (en) | 1983-09-22 |
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