JPH0310680U - - Google Patents

Info

Publication number
JPH0310680U
JPH0310680U JP7133789U JP7133789U JPH0310680U JP H0310680 U JPH0310680 U JP H0310680U JP 7133789 U JP7133789 U JP 7133789U JP 7133789 U JP7133789 U JP 7133789U JP H0310680 U JPH0310680 U JP H0310680U
Authority
JP
Japan
Prior art keywords
line
connects
telephones
central office
extension
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
JP7133789U
Other languages
English (en)
Other versions
JPH0810994Y2 (ja
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 JP7133789U priority Critical patent/JPH0810994Y2/ja
Publication of JPH0310680U publication Critical patent/JPH0310680U/ja
Application granted granted Critical
Publication of JPH0810994Y2 publication Critical patent/JPH0810994Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

Description

【図面の簡単な説明】
第１図は本考案の一実施例を示す図、第２図は
従来例を示す図である。 ２２……外線／内線切換リレースイツチ、２５
……演算制御手段、３１……保留回路、３５……
ＤＴＭＦ信号検出回路。

Claims (1)

    【実用新案登録請求の範囲】
  1. 単一局線に対して複数の電話機を接続すると共
    に、該電話機を局線と接続する外線側接続と前記
    電話機を相互に接続する内線側接続のいずれか一
    方の接続状態に切換える外線／内線切換手段と、
    ＤＴＭＦ信号を検出する検出手段と、前記外線／
    内線切換手段の接続状態に応じて前記検出手段の
    検出レベルを変化せしめる制御手段とを具備した
    ことを特徴とする電話装置。
JP7133789U 1989-06-19 1989-06-19 電話装置 Expired - Lifetime JPH0810994Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7133789U JPH0810994Y2 (ja) 1989-06-19 1989-06-19 電話装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7133789U JPH0810994Y2 (ja) 1989-06-19 1989-06-19 電話装置

Publications (2)

Publication Number Publication Date
JPH0310680U true JPH0310680U (ja) 1991-01-31
JPH0810994Y2 JPH0810994Y2 (ja) 1996-03-29

Family

ID=31608273

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7133789U Expired - Lifetime JPH0810994Y2 (ja) 1989-06-19 1989-06-19 電話装置

Country Status (1)

Country Link
JP (1) JPH0810994Y2 (ja)

Also Published As

Publication number Publication date
JPH0810994Y2 (ja) 1996-03-29

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term