JPH0753321Y2 - 呼出信号検出回路 - Google Patents

呼出信号検出回路

Info

Publication number
JPH0753321Y2
JPH0753321Y2 JP1989092538U JP9253889U JPH0753321Y2 JP H0753321 Y2 JPH0753321 Y2 JP H0753321Y2 JP 1989092538 U JP1989092538 U JP 1989092538U JP 9253889 U JP9253889 U JP 9253889U JP H0753321 Y2 JPH0753321 Y2 JP H0753321Y2
Authority
JP
Japan
Prior art keywords
signal
detection
ringing
detection circuit
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.)
Expired - Lifetime
Application number
JP1989092538U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0332851U (enrdf_load_stackoverflow
Inventor
徹 志村
Original Assignee
日通工株式会社
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 日通工株式会社 filed Critical 日通工株式会社
Priority to JP1989092538U priority Critical patent/JPH0753321Y2/ja
Publication of JPH0332851U publication Critical patent/JPH0332851U/ja
Application granted granted Critical
Publication of JPH0753321Y2 publication Critical patent/JPH0753321Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Interface Circuits In Exchanges (AREA)
JP1989092538U 1989-08-08 1989-08-08 呼出信号検出回路 Expired - Lifetime JPH0753321Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989092538U JPH0753321Y2 (ja) 1989-08-08 1989-08-08 呼出信号検出回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989092538U JPH0753321Y2 (ja) 1989-08-08 1989-08-08 呼出信号検出回路

Publications (2)

Publication Number Publication Date
JPH0332851U JPH0332851U (enrdf_load_stackoverflow) 1991-03-29
JPH0753321Y2 true JPH0753321Y2 (ja) 1995-12-06

Family

ID=31641959

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989092538U Expired - Lifetime JPH0753321Y2 (ja) 1989-08-08 1989-08-08 呼出信号検出回路

Country Status (1)

Country Link
JP (1) JPH0753321Y2 (enrdf_load_stackoverflow)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58116849A (ja) * 1981-12-29 1983-07-12 Toshiba Corp 電話機のインタフエ−ス回路
JPS63151144A (ja) * 1986-12-15 1988-06-23 Matsushita Electric Ind Co Ltd 着信検出装置

Also Published As

Publication number Publication date
JPH0332851U (enrdf_load_stackoverflow) 1991-03-29

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