JPS522206A - Indicator for termination of a telephone call - Google Patents

Indicator for termination of a telephone call

Info

Publication number
JPS522206A
JPS522206A JP7766275A JP7766275A JPS522206A JP S522206 A JPS522206 A JP S522206A JP 7766275 A JP7766275 A JP 7766275A JP 7766275 A JP7766275 A JP 7766275A JP S522206 A JPS522206 A JP S522206A
Authority
JP
Japan
Prior art keywords
termination
telephone call
indicator
telephone
enable
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
JP7766275A
Other languages
Japanese (ja)
Inventor
Yoshiaki Doi
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP7766275A priority Critical patent/JPS522206A/en
Publication of JPS522206A publication Critical patent/JPS522206A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/82—Line monitoring circuits for call progress or status discrimination

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To enable to know easily the termination of a telephone call from the outside even if any device is connected to the telephone set.
JP7766275A 1975-06-24 1975-06-24 Indicator for termination of a telephone call Pending JPS522206A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7766275A JPS522206A (en) 1975-06-24 1975-06-24 Indicator for termination of a telephone call

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7766275A JPS522206A (en) 1975-06-24 1975-06-24 Indicator for termination of a telephone call

Publications (1)

Publication Number Publication Date
JPS522206A true JPS522206A (en) 1977-01-08

Family

ID=13640076

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7766275A Pending JPS522206A (en) 1975-06-24 1975-06-24 Indicator for termination of a telephone call

Country Status (1)

Country Link
JP (1) JPS522206A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4409437A (en) * 1979-11-02 1983-10-11 Canon Kabushiki Kaisha Apparatus for indicating telephone line state
JPS60168810A (en) * 1984-09-17 1985-09-02 Takechi Koumushiyo:Kk Liquefaction-proofing structure of foundation ground
JPH0329546A (en) * 1989-06-27 1991-02-07 Toshiba Corp Telephone system
JPH04179352A (en) * 1990-11-13 1992-06-26 Mitsubishi Electric Corp Codeless telephone set

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4910604A (en) * 1972-05-24 1974-01-30

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4910604A (en) * 1972-05-24 1974-01-30

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4409437A (en) * 1979-11-02 1983-10-11 Canon Kabushiki Kaisha Apparatus for indicating telephone line state
JPS60168810A (en) * 1984-09-17 1985-09-02 Takechi Koumushiyo:Kk Liquefaction-proofing structure of foundation ground
JPH0329546A (en) * 1989-06-27 1991-02-07 Toshiba Corp Telephone system
JPH04179352A (en) * 1990-11-13 1992-06-26 Mitsubishi Electric Corp Codeless telephone set

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