JPS5474616A - Tester for digital incoming line - Google Patents

Tester for digital incoming line

Info

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
Application number
JP14253177A
Other languages
Japanese (ja)
Other versions
JPS5842979B2 (en
Inventor
Shiro Kikuchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP14253177A priority Critical patent/JPS5842979B2/en
Publication of JPS5474616A publication Critical patent/JPS5474616A/en
Publication of JPS5842979B2 publication Critical patent/JPS5842979B2/en
Expired legal-status Critical Current

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)
  • Monitoring And Testing Of Exchanges (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (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.
JP14253177A 1977-11-28 1977-11-28 Digital input line tester Expired JPS5842979B2 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (9)

* Cited by examiner, † Cited by third party
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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