JPS6320067B2 - - Google Patents

Info

Publication number
JPS6320067B2
JPS6320067B2 JP55025302A JP2530280A JPS6320067B2 JP S6320067 B2 JPS6320067 B2 JP S6320067B2 JP 55025302 A JP55025302 A JP 55025302A JP 2530280 A JP2530280 A JP 2530280A JP S6320067 B2 JPS6320067 B2 JP S6320067B2
Authority
JP
Japan
Prior art keywords
test
subscriber
line
circuit
concentrator
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.)
Expired
Application number
JP55025302A
Other languages
English (en)
Japanese (ja)
Other versions
JPS56122561A (en
Inventor
Akira Horiki
Kazuyuki Tamai
Shigeru Nishama
Hidetoshi Takeshita
Hiroshi Shinkawa
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.)
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Original Assignee
Fujitsu Ltd
Hitachi Ltd
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
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 Fujitsu Ltd, Hitachi Ltd, Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd, Nippon Electric Co Ltd filed Critical Fujitsu Ltd
Priority to JP2530280A priority Critical patent/JPS56122561A/ja
Publication of JPS56122561A publication Critical patent/JPS56122561A/ja
Publication of JPS6320067B2 publication Critical patent/JPS6320067B2/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)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
JP2530280A 1980-03-03 1980-03-03 Subscriber line concentration stage testing system Granted JPS56122561A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2530280A JPS56122561A (en) 1980-03-03 1980-03-03 Subscriber line concentration stage testing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2530280A JPS56122561A (en) 1980-03-03 1980-03-03 Subscriber line concentration stage testing system

Publications (2)

Publication Number Publication Date
JPS56122561A JPS56122561A (en) 1981-09-26
JPS6320067B2 true JPS6320067B2 (enrdf_load_stackoverflow) 1988-04-26

Family

ID=12162211

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2530280A Granted JPS56122561A (en) 1980-03-03 1980-03-03 Subscriber line concentration stage testing system

Country Status (1)

Country Link
JP (1) JPS56122561A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59201568A (ja) * 1983-04-28 1984-11-15 Nec Corp 加入者回線試験方式

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5478005A (en) * 1977-12-05 1979-06-21 Nec Corp Subscribersigma line control system
JPS5482906A (en) * 1977-12-14 1979-07-02 Nec Corp Test connection system of subscriber line

Also Published As

Publication number Publication date
JPS56122561A (en) 1981-09-26

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