JPH0270590U - - Google Patents

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Publication number
JPH0270590U
JPH0270590U JP14984788U JP14984788U JPH0270590U JP H0270590 U JPH0270590 U JP H0270590U JP 14984788 U JP14984788 U JP 14984788U JP 14984788 U JP14984788 U JP 14984788U JP H0270590 U JPH0270590 U JP H0270590U
Authority
JP
Japan
Prior art keywords
circuit
extension
extension telephone
office line
bypass
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
JP14984788U
Other languages
English (en)
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 filed Critical
Priority to JP14984788U priority Critical patent/JPH0270590U/ja
Publication of JPH0270590U publication Critical patent/JPH0270590U/ja
Pending legal-status Critical Current

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Description

【図面の簡単な説明】
図は本考案の一実施例のブロツク図である。 1−1,1−2,1−3……局線、2−1,2
−2,2−3……局線回路、3……ネツトワーク
スイツチ、4−1,4−2……検出手段、5−1
,5−2,5−3……内線回路、6−1,6−2
……切換手段、7−1,7−2,7−3……内線
電話機、8……信号分配回路、9……制御部、1
0−1,10−2……側路回路。

Claims (1)

  1. 【実用新案登録請求の範囲】 構内交換機等に備えられた局線回路と内線回路
    を側路回路により側路して内線電話機を直接局線
    に接続する直通切換回路において、 前記側路回路が使用中であるか否かを検出する
    検出手段と、前記内線電話機を前記側路回路ある
    いは前記内線回路のいずれか一方に接続する切換
    手段と、前記検出手段の出力に基づいて前記切換
    手段及び前記局線回路を制御する制御部と、を備
    えて成ることを特徴とする直通切換回路。
JP14984788U 1988-11-16 1988-11-16 Pending JPH0270590U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14984788U JPH0270590U (ja) 1988-11-16 1988-11-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14984788U JPH0270590U (ja) 1988-11-16 1988-11-16

Publications (1)

Publication Number Publication Date
JPH0270590U true JPH0270590U (ja) 1990-05-29

Family

ID=31422452

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14984788U Pending JPH0270590U (ja) 1988-11-16 1988-11-16

Country Status (1)

Country Link
JP (1) JPH0270590U (ja)

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