JPS55104165A - Automatic test system for telephone set in emergency telephone set for road - Google Patents

Automatic test system for telephone set in emergency telephone set for road

Info

Publication number
JPS55104165A
JPS55104165A JP1048279A JP1048279A JPS55104165A JP S55104165 A JPS55104165 A JP S55104165A JP 1048279 A JP1048279 A JP 1048279A JP 1048279 A JP1048279 A JP 1048279A JP S55104165 A JPS55104165 A JP S55104165A
Authority
JP
Japan
Prior art keywords
telephone set
exchanger
fed
signal
circuit
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
JP1048279A
Other languages
English (en)
Other versions
JPS5938785B2 (ja
Inventor
Hiroshi Hiraide
Kousaku Fujiwara
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.)
Sumitomo Electric Industries Ltd
Kanda Tsushin Kogyo Co Ltd
Original Assignee
Sumitomo Electric Industries Ltd
Kanda Tsushin Kogyo 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 Sumitomo Electric Industries Ltd, Kanda Tsushin Kogyo Co Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP1048279A priority Critical patent/JPS5938785B2/ja
Publication of JPS55104165A publication Critical patent/JPS55104165A/ja
Publication of JPS5938785B2 publication Critical patent/JPS5938785B2/ja
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
    • 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)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
JP1048279A 1979-02-02 1979-02-02 道路用非常電話装置における電話機自動試験方式 Expired JPS5938785B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1048279A JPS5938785B2 (ja) 1979-02-02 1979-02-02 道路用非常電話装置における電話機自動試験方式

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1048279A JPS5938785B2 (ja) 1979-02-02 1979-02-02 道路用非常電話装置における電話機自動試験方式

Publications (2)

Publication Number Publication Date
JPS55104165A true JPS55104165A (en) 1980-08-09
JPS5938785B2 JPS5938785B2 (ja) 1984-09-19

Family

ID=11751375

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1048279A Expired JPS5938785B2 (ja) 1979-02-02 1979-02-02 道路用非常電話装置における電話機自動試験方式

Country Status (1)

Country Link
JP (1) JPS5938785B2 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59172874A (ja) * 1983-03-23 1984-09-29 Iwatsu Electric Co Ltd 通話路検査方式
KR100326948B1 (ko) * 1999-07-24 2002-03-13 다우전자통신 주식회사 비상 전화의 상태 감지 장치

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59172874A (ja) * 1983-03-23 1984-09-29 Iwatsu Electric Co Ltd 通話路検査方式
KR100326948B1 (ko) * 1999-07-24 2002-03-13 다우전자통신 주식회사 비상 전화의 상태 감지 장치

Also Published As

Publication number Publication date
JPS5938785B2 (ja) 1984-09-19

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