JPS5837285U - Office line switching circuit - Google Patents

Office line switching circuit

Info

Publication number
JPS5837285U
JPS5837285U JP13043781U JP13043781U JPS5837285U JP S5837285 U JPS5837285 U JP S5837285U JP 13043781 U JP13043781 U JP 13043781U JP 13043781 U JP13043781 U JP 13043781U JP S5837285 U JPS5837285 U JP S5837285U
Authority
JP
Japan
Prior art keywords
office line
switching circuit
line switching
telephone
central office
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
JP13043781U
Other languages
Japanese (ja)
Inventor
友彦 佐藤
Original Assignee
日本電気株式会社
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 日本電気株式会社 filed Critical 日本電気株式会社
Priority to JP13043781U priority Critical patent/JPS5837285U/en
Publication of JPS5837285U publication Critical patent/JPS5837285U/en
Pending legal-status Critical Current

Links

Landscapes

  • Sub-Exchange Stations And Push- Button Telephones (AREA)

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図は従来の局線切替回路の一例を示す回路図、第２
図は本考案の一実施例を示す回路図である。Figure 1 is a circuit diagram showing an example of a conventional station line switching circuit;
The figure is a circuit diagram showing an embodiment of the present invention.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 構内電話交換機の局線トランクにトランク閉塞電鍵を備
え、該電鍵の接点を通した地気を局線切替用継電器に供
給することを特徴とする局線切替回路。1. A central office line switching circuit characterized in that a central office line trunk of a private telephone exchange is provided with a trunk blocking telephone key, and earth air passing through the contacts of the telephone key is supplied to a central telephone switching relay.
JP13043781U 1981-09-02 1981-09-02 Office line switching circuit Pending JPS5837285U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13043781U JPS5837285U (en) 1981-09-02 1981-09-02 Office line switching circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13043781U JPS5837285U (en) 1981-09-02 1981-09-02 Office line switching circuit

Publications (1)

Publication Number Publication Date
JPS5837285U true JPS5837285U (en) 1983-03-10

Family

ID=29924065

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13043781U Pending JPS5837285U (en) 1981-09-02 1981-09-02 Office line switching circuit

Country Status (1)

Country Link
JP (1) JPS5837285U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63302803A (en) * 1987-06-03 1988-12-09 ワイケイケイ株式会社 Button collet, and method and apparatus for producing the same
JPH06154011A (en) * 1992-11-24 1994-06-03 Gondora Kogyo Kk Covered button and its apparatus for production

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63302803A (en) * 1987-06-03 1988-12-09 ワイケイケイ株式会社 Button collet, and method and apparatus for producing the same
JPH06154011A (en) * 1992-11-24 1994-06-03 Gondora Kogyo Kk Covered button and its apparatus for production

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