JPS6114560U - 公衆電話機の着信検知回路 - Google Patents

公衆電話機の着信検知回路

Info

Publication number
JPS6114560U
JPS6114560U JP9610484U JP9610484U JPS6114560U JP S6114560 U JPS6114560 U JP S6114560U JP 9610484 U JP9610484 U JP 9610484U JP 9610484 U JP9610484 U JP 9610484U JP S6114560 U JPS6114560 U JP S6114560U
Authority
JP
Japan
Prior art keywords
light
detection circuit
incoming call
public telephone
call 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
JP9610484U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0314860Y2 (enrdf_load_stackoverflow
Inventor
栄司 是安
和夫 浅田
修 篠原
幸雄 植木
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP9610484U priority Critical patent/JPS6114560U/ja
Publication of JPS6114560U publication Critical patent/JPS6114560U/ja
Application granted granted Critical
Publication of JPH0314860Y2 publication Critical patent/JPH0314860Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Prepayment Telephone Systems (AREA)
JP9610484U 1984-06-28 1984-06-28 公衆電話機の着信検知回路 Granted JPS6114560U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9610484U JPS6114560U (ja) 1984-06-28 1984-06-28 公衆電話機の着信検知回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9610484U JPS6114560U (ja) 1984-06-28 1984-06-28 公衆電話機の着信検知回路

Publications (2)

Publication Number Publication Date
JPS6114560U true JPS6114560U (ja) 1986-01-28
JPH0314860Y2 JPH0314860Y2 (enrdf_load_stackoverflow) 1991-04-02

Family

ID=30655436

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9610484U Granted JPS6114560U (ja) 1984-06-28 1984-06-28 公衆電話機の着信検知回路

Country Status (1)

Country Link
JP (1) JPS6114560U (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPH0314860Y2 (enrdf_load_stackoverflow) 1991-04-02

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