JPS56138394A - Test system of time sharing exchanger spare system - Google Patents

Test system of time sharing exchanger spare system

Info

Publication number
JPS56138394A
JPS56138394A JP4250780A JP4250780A JPS56138394A JP S56138394 A JPS56138394 A JP S56138394A JP 4250780 A JP4250780 A JP 4250780A JP 4250780 A JP4250780 A JP 4250780A JP S56138394 A JPS56138394 A JP S56138394A
Authority
JP
Japan
Prior art keywords
circuits
multiplex
time sharing
test
spare system
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
Application number
JP4250780A
Other languages
Japanese (ja)
Inventor
Susumu Iwasaki
Masakatsu Kuroki
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP4250780A priority Critical patent/JPS56138394A/en
Publication of JPS56138394A publication Critical patent/JPS56138394A/en
Pending 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)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To enable to make the test of channel system without competing with the present system, by inserting suitable input signal to the spare system of the time sharing channel and signal processor under the control of the spare system central processor and monitoring the output. CONSTITUTION:The test use simulating signal branch insertion circuits 13a, 13b are installed between the duplication time sharing networks 11a, 11b and multiplex/multiplex separation circuits 12a, 12b. The circuits 12a, 12b are interfaced with the nonduplicate device of the digital terminal 15 and A/D, D/A conversion circuits 16, 17. The analog trunk and subscriber line are respectively contained in the trunk circuit 18 and subscriber circuit 19, and connected to the multiplex/multiplex separating circuits 12a, 12b via the A/D, D/A conversion circuits 16 and 17.
JP4250780A 1980-03-31 1980-03-31 Test system of time sharing exchanger spare system Pending JPS56138394A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4250780A JPS56138394A (en) 1980-03-31 1980-03-31 Test system of time sharing exchanger spare system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4250780A JPS56138394A (en) 1980-03-31 1980-03-31 Test system of time sharing exchanger spare system

Publications (1)

Publication Number Publication Date
JPS56138394A true JPS56138394A (en) 1981-10-28

Family

ID=12637972

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4250780A Pending JPS56138394A (en) 1980-03-31 1980-03-31 Test system of time sharing exchanger spare system

Country Status (1)

Country Link
JP (1) JPS56138394A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58147295A (en) * 1982-02-26 1983-09-02 Fujitsu Ltd Highway connecting system of digital exchange
JPS59144255A (en) * 1983-02-07 1984-08-18 Nec Corp Extension testing system of electronic exchange
JPH04104630A (en) * 1990-08-24 1992-04-07 Nec Eng Ltd Channel editer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53136416A (en) * 1977-05-02 1978-11-29 Oki Electric Ind Co Ltd Testing system for time-division multiple switch
JPS5474616A (en) * 1977-11-28 1979-06-14 Nippon Telegr & Teleph Corp <Ntt> Tester for digital incoming line

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53136416A (en) * 1977-05-02 1978-11-29 Oki Electric Ind Co Ltd Testing system for time-division multiple switch
JPS5474616A (en) * 1977-11-28 1979-06-14 Nippon Telegr & Teleph Corp <Ntt> Tester for digital incoming line

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58147295A (en) * 1982-02-26 1983-09-02 Fujitsu Ltd Highway connecting system of digital exchange
JPH0359638B2 (en) * 1982-02-26 1991-09-11 Fujitsu Kk
JPS59144255A (en) * 1983-02-07 1984-08-18 Nec Corp Extension testing system of electronic exchange
JPH04104630A (en) * 1990-08-24 1992-04-07 Nec Eng Ltd Channel editer

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