JPS5795749A - System for test of subscriber's circuit device - Google Patents

System for test of subscriber's circuit device

Info

Publication number
JPS5795749A
JPS5795749A JP17155680A JP17155680A JPS5795749A JP S5795749 A JPS5795749 A JP S5795749A JP 17155680 A JP17155680 A JP 17155680A JP 17155680 A JP17155680 A JP 17155680A JP S5795749 A JPS5795749 A JP S5795749A
Authority
JP
Japan
Prior art keywords
highway
specific channel
channel
receiving
transmission
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
JP17155680A
Other languages
Japanese (ja)
Inventor
Hiroyuki Endo
Minoru Unzai
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 JP17155680A priority Critical patent/JPS5795749A/en
Publication of JPS5795749A publication Critical patent/JPS5795749A/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
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
    • H04M3/302—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop using modulation techniques for copper pairs
    • H04M3/303—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop using modulation techniques for copper pairs and using PCM multiplexers, e.g. pair gain systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)

Abstract

PURPOSE:To diagnose highways automatically to improve the reliability of the system, by collating the signal of a specific channel of the transmission-side highway and the signal of a specific channel of the receiving-side highway with each other. CONSTITUTION:A specific channel 10 of a highway 3 is assigned as the channel for channel test, and the specific channel 0 of a transmission-side highway 3A is always folded to the specific channel 0 of a receiving-side highway 3B, and it is checked whether the same data (g) as highway data (e) of the transmission side is returned to the receiving-side highway or not. Consequently, the fault of a subscriber's circuit device 2 and highways 3 between this device 2 and a time division switch circuit 7 are diagnosed automatically.
JP17155680A 1980-12-05 1980-12-05 System for test of subscriber's circuit device Pending JPS5795749A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17155680A JPS5795749A (en) 1980-12-05 1980-12-05 System for test of subscriber's circuit device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17155680A JPS5795749A (en) 1980-12-05 1980-12-05 System for test of subscriber's circuit device

Publications (1)

Publication Number Publication Date
JPS5795749A true JPS5795749A (en) 1982-06-14

Family

ID=15925313

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17155680A Pending JPS5795749A (en) 1980-12-05 1980-12-05 System for test of subscriber's circuit device

Country Status (1)

Country Link
JP (1) JPS5795749A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6077565A (en) * 1983-10-05 1985-05-02 Fujitsu Ltd Test method of data subscriber circuit
JPS62110354A (en) * 1985-11-08 1987-05-21 Fujitsu Ltd Loop back test system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6077565A (en) * 1983-10-05 1985-05-02 Fujitsu Ltd Test method of data subscriber circuit
JPS62110354A (en) * 1985-11-08 1987-05-21 Fujitsu Ltd Loop back test system

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