JPS57157671A - Automatic testing system for subscriber's circuit - Google Patents

Automatic testing system for subscriber's circuit

Info

Publication number
JPS57157671A
JPS57157671A JP4331681A JP4331681A JPS57157671A JP S57157671 A JPS57157671 A JP S57157671A JP 4331681 A JP4331681 A JP 4331681A JP 4331681 A JP4331681 A JP 4331681A JP S57157671 A JPS57157671 A JP S57157671A
Authority
JP
Japan
Prior art keywords
circuit
subscriber
lalt
switchboard
equipment
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
JP4331681A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6362150B2 (enrdf_load_stackoverflow
Inventor
Akio Saeki
Kentaro Todo
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 JP4331681A priority Critical patent/JPS57157671A/ja
Publication of JPS57157671A publication Critical patent/JPS57157671A/ja
Publication of JPS6362150B2 publication Critical patent/JPS6362150B2/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
    • H04M3/26—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)
JP4331681A 1981-03-25 1981-03-25 Automatic testing system for subscriber's circuit Granted JPS57157671A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4331681A JPS57157671A (en) 1981-03-25 1981-03-25 Automatic testing system for subscriber's circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4331681A JPS57157671A (en) 1981-03-25 1981-03-25 Automatic testing system for subscriber's circuit

Publications (2)

Publication Number Publication Date
JPS57157671A true JPS57157671A (en) 1982-09-29
JPS6362150B2 JPS6362150B2 (enrdf_load_stackoverflow) 1988-12-01

Family

ID=12660395

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4331681A Granted JPS57157671A (en) 1981-03-25 1981-03-25 Automatic testing system for subscriber's circuit

Country Status (1)

Country Link
JP (1) JPS57157671A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61150554A (ja) * 1984-12-25 1986-07-09 Nec Corp ライントランク回路の自己診断方式
JPS61230455A (ja) * 1985-04-04 1986-10-14 Nec Corp 擬似呼試験方式
JPS6384335A (ja) * 1986-09-29 1988-04-14 Nec Corp デ−タ呼試験方式

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61150554A (ja) * 1984-12-25 1986-07-09 Nec Corp ライントランク回路の自己診断方式
JPS61230455A (ja) * 1985-04-04 1986-10-14 Nec Corp 擬似呼試験方式
JPS6384335A (ja) * 1986-09-29 1988-04-14 Nec Corp デ−タ呼試験方式

Also Published As

Publication number Publication date
JPS6362150B2 (enrdf_load_stackoverflow) 1988-12-01

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