JPS58139757U - ring trip circuit - Google Patents

ring trip circuit

Info

Publication number
JPS58139757U
JPS58139757U JP3513182U JP3513182U JPS58139757U JP S58139757 U JPS58139757 U JP S58139757U JP 3513182 U JP3513182 U JP 3513182U JP 3513182 U JP3513182 U JP 3513182U JP S58139757 U JPS58139757 U JP S58139757U
Authority
JP
Japan
Prior art keywords
circuit
ring trip
trip circuit
hook
loop
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
JP3513182U
Other languages
Japanese (ja)
Inventor
斎藤　芳久
博之 松田
Original Assignee
株式会社日立製作所
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 株式会社日立製作所 filed Critical 株式会社日立製作所
Priority to JP3513182U priority Critical patent/JPS58139757U/en
Publication of JPS58139757U publication Critical patent/JPS58139757U/en
Pending legal-status Critical Current

Links

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来のリングトリップ回路の一例を示す回路図
であり、第２図は本考案のリング）　ＩＪツブ回路の一
実施例を示す回路図である。 １・・・端末器、２・・・呼出信号発振器、３・・・ｏ
ｐアンプ、４・・・リングトリップ表示回路、１１．２
１・・・平滑回路、１２．２２・・・抵抗減衰回路、１
３゜２３・・・判定回路、Ｒ１−Ｒ１８・・・抵抗、ｃ
ｌ、　ｃ２・・・コンデンサ。FIG. 1 is a circuit diagram showing an example of a conventional ring trip circuit, and FIG. 2 is a circuit diagram showing an example of the ring/IJ tube circuit of the present invention. 1...Terminal device, 2...Call signal oscillator, 3...o
p amplifier, 4... ring trip display circuit, 11.2
1... Smoothing circuit, 12.22... Resistance attenuation circuit, 1
3゜23...Judgment circuit, R1-R18...Resistor, c
l, c2... capacitor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 被呼端末機のオフフックによって該端末機を介して直流
ループを形成することにより、該端末機のオフフックを
検出し、それによって呼出信号を停止して回線を通話状
態にするリングトリップ回路において、上記直流ループ
内のリングトリップ検出用抵抗の両端に接続された抵抗
減衰回路と、該抵抗減衰回路の後段に接続された平滑回
路と、該平滑回路のコンデンサ両端からリングトリップ
判定信号を取り出し、該抵抗減衰回路内の抵抗値偏差に
よる差動電圧を小さくしたことを特徴とするリングトリ
ップ回路。The ring trip circuit detects the off-hook of a called terminal by forming a DC loop through the terminal when the called terminal goes off-hook, thereby stopping the ringing signal and putting the line into a communication state. A resistance attenuation circuit is connected to both ends of the ring trip detection resistor in the DC loop, a smoothing circuit is connected after the resistance attenuation circuit, and a ring trip judgment signal is extracted from both ends of the capacitor of the smoothing circuit. A ring trip circuit characterized by reducing the differential voltage caused by resistance value deviation within the attenuation circuit.
JP3513182U 1982-03-15 1982-03-15 ring trip circuit Pending JPS58139757U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3513182U JPS58139757U (en) 1982-03-15 1982-03-15 ring trip circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3513182U JPS58139757U (en) 1982-03-15 1982-03-15 ring trip circuit

Publications (1)

Publication Number Publication Date
JPS58139757U true JPS58139757U (en) 1983-09-20

Family

ID=30046615

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3513182U Pending JPS58139757U (en) 1982-03-15 1982-03-15 ring trip circuit

Country Status (1)

Country Link
JP (1) JPS58139757U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9108211B2 (en) 2005-05-25 2015-08-18 Nektar Therapeutics Vibration systems and methods

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS586649A (en) * 1981-07-06 1983-01-14 Nippon Telegr & Teleph Corp <Ntt> Ring trip circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS586649A (en) * 1981-07-06 1983-01-14 Nippon Telegr & Teleph Corp <Ntt> Ring trip circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9108211B2 (en) 2005-05-25 2015-08-18 Nektar Therapeutics Vibration systems and methods

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