JPS5624866A - Sectioning test circuit - Google Patents

Sectioning test circuit

Info

Publication number
JPS5624866A
JPS5624866A JP10001279A JP10001279A JPS5624866A JP S5624866 A JPS5624866 A JP S5624866A JP 10001279 A JP10001279 A JP 10001279A JP 10001279 A JP10001279 A JP 10001279A JP S5624866 A JPS5624866 A JP S5624866A
Authority
JP
Japan
Prior art keywords
terminal
telephone line
signal
sectioning
detection
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
JP10001279A
Other languages
Japanese (ja)
Other versions
JPS5827708B2 (en
Inventor
Masanori Nakazawa
Kyoichi Nakakawara
Fukue Ogawa
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.)
Toshiba Corp
Nippon Telegraph and Telephone Corp
Original Assignee
Toshiba Corp
Nippon Telegraph and Telephone Corp
Tokyo Shibaura 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 Toshiba Corp, Nippon Telegraph and Telephone Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP54100012A priority Critical patent/JPS5827708B2/en
Publication of JPS5624866A publication Critical patent/JPS5624866A/en
Publication of JPS5827708B2 publication Critical patent/JPS5827708B2/en
Expired 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
    • H04M3/301—Circuit arrangements at the subscriber's side of the line

Landscapes

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

Abstract

PURPOSE:To enable to perform the sectioning test of the network control unit from the telephone station side, by sectioning the terminal unit from the subscribing telephone line to form the internal folding loop with the test signal from the telephone station. CONSTITUTION:When the signal fed from the telephone station 10 via the subscriber telephone line 20 is the terminal callout signal, it is detected at the terminal callout signal detection circuits 421, 422. Further, the switch circuits 43, 44 are controlled with this detection and the corresponding terminal units 501, 502 are connected to the subscriber telephone line 20. Further, when the test signal is fed, it is detected at the test signal detection circuit 423. The switch circuit 451 is controlled with this detection and the terminal units 501, 502 are sectioned from the subscriber telephone line 20 to form the internal folding loop via the resistor 452 and diodes 453, 454.
JP54100012A 1979-08-06 1979-08-06 Cut test circuit Expired JPS5827708B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54100012A JPS5827708B2 (en) 1979-08-06 1979-08-06 Cut test circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54100012A JPS5827708B2 (en) 1979-08-06 1979-08-06 Cut test circuit

Publications (2)

Publication Number Publication Date
JPS5624866A true JPS5624866A (en) 1981-03-10
JPS5827708B2 JPS5827708B2 (en) 1983-06-10

Family

ID=14262638

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54100012A Expired JPS5827708B2 (en) 1979-08-06 1979-08-06 Cut test circuit

Country Status (1)

Country Link
JP (1) JPS5827708B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60121837A (en) * 1983-12-05 1985-06-29 Nippon Telegr & Teleph Corp <Ntt> Remote test system
JPS6176883A (en) * 1984-09-15 1986-04-19 ダイムラ−ベンツ・アクチエンゲゼルシャフト Heat pipe consisting of aluminum, steel or gray cast iron
JPS635654A (en) * 1986-06-25 1988-01-11 Nec Corp Subscriber line loop back control system
JPH02211759A (en) * 1989-02-10 1990-08-23 Nippon Telegr & Teleph Corp <Ntt> Communication line terminal control equipment
JPH03463U (en) * 1989-05-25 1991-01-07
JPH06291838A (en) * 1991-10-04 1994-10-18 American Teleph & Telegr Co <Att> Connection interruption circuit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6049278A (en) * 1983-08-29 1985-03-18 Toyota Motor Corp Car laser radar equipment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55124352A (en) * 1979-03-19 1980-09-25 Toshiba Corp Bracketing test method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55124352A (en) * 1979-03-19 1980-09-25 Toshiba Corp Bracketing test method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60121837A (en) * 1983-12-05 1985-06-29 Nippon Telegr & Teleph Corp <Ntt> Remote test system
JPS6176883A (en) * 1984-09-15 1986-04-19 ダイムラ−ベンツ・アクチエンゲゼルシャフト Heat pipe consisting of aluminum, steel or gray cast iron
JPH0534597B2 (en) * 1984-09-15 1993-05-24 Daimler Benz Ag
JPS635654A (en) * 1986-06-25 1988-01-11 Nec Corp Subscriber line loop back control system
JPH02211759A (en) * 1989-02-10 1990-08-23 Nippon Telegr & Teleph Corp <Ntt> Communication line terminal control equipment
JPH03463U (en) * 1989-05-25 1991-01-07
JPH06291838A (en) * 1991-10-04 1994-10-18 American Teleph & Telegr Co <Att> Connection interruption circuit

Also Published As

Publication number Publication date
JPS5827708B2 (en) 1983-06-10

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