JPS57133752A - Test system for extension - Google Patents

Test system for extension

Info

Publication number
JPS57133752A
JPS57133752A JP1924381A JP1924381A JPS57133752A JP S57133752 A JPS57133752 A JP S57133752A JP 1924381 A JP1924381 A JP 1924381A JP 1924381 A JP1924381 A JP 1924381A JP S57133752 A JPS57133752 A JP S57133752A
Authority
JP
Japan
Prior art keywords
extension
test
circuit
lead
flows
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
JP1924381A
Other languages
Japanese (ja)
Other versions
JPS6359574B2 (en
Inventor
Hiroshi Sato
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 JP1924381A priority Critical patent/JPS57133752A/en
Publication of JPS57133752A publication Critical patent/JPS57133752A/en
Publication of JPS6359574B2 publication Critical patent/JPS6359574B2/ja
Granted 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)

Abstract

PURPOSE:To achieve connection test at extension, by providing a control section corresponding to the time division network installed duplicatedly to a simplex line interface device and changing the connection at normal and test. CONSTITUTION:At the test of extension, a communication signal from an interface device 1 to duplicated networks NWs 3, 4 flows to both the NWs 3, 4 via a lead 102 and a gate 110 from an interface circuit 10. Taking the device 1 as the objective of test for extension for example, and the NW3 as a spare device, the communication signal flowing to the lead 112 flows to the circuit 10 via gates 118, 119. The channel signal from the circuit 10 to the NW3 flows via the lead 102 and the gates 108, 109. Thus, the connection between the circuit 10 and the NW3 is possible at the test for extension.
JP1924381A 1981-02-12 1981-02-12 Test system for extension Granted JPS57133752A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1924381A JPS57133752A (en) 1981-02-12 1981-02-12 Test system for extension

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1924381A JPS57133752A (en) 1981-02-12 1981-02-12 Test system for extension

Publications (2)

Publication Number Publication Date
JPS57133752A true JPS57133752A (en) 1982-08-18
JPS6359574B2 JPS6359574B2 (en) 1988-11-21

Family

ID=11993959

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1924381A Granted JPS57133752A (en) 1981-02-12 1981-02-12 Test system for extension

Country Status (1)

Country Link
JP (1) JPS57133752A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6149547A (en) * 1984-08-18 1986-03-11 Fujitsu Ltd Diagnostic system for dual highway

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6149547A (en) * 1984-08-18 1986-03-11 Fujitsu Ltd Diagnostic system for dual highway
JPH0414821B2 (en) * 1984-08-18 1992-03-16 Fujitsu Ltd

Also Published As

Publication number Publication date
JPS6359574B2 (en) 1988-11-21

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