JPS6421553U - - Google Patents

Info

Publication number
JPS6421553U
JPS6421553U JP11563387U JP11563387U JPS6421553U JP S6421553 U JPS6421553 U JP S6421553U JP 11563387 U JP11563387 U JP 11563387U JP 11563387 U JP11563387 U JP 11563387U JP S6421553 U JPS6421553 U JP S6421553U
Authority
JP
Japan
Prior art keywords
circuit
switch
handsets
handset
telephone
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
JP11563387U
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 JP11563387U priority Critical patent/JPS6421553U/ja
Publication of JPS6421553U publication Critical patent/JPS6421553U/ja
Pending legal-status Critical Current

Links

Description

【図面の簡単な説明】
図面は本考案の要部である通話回路を示し、第
1図が待機状態の回路、第2図が一方の受話器A
を取つた状態の回路、第3図が両受話器A,Bを
取つた状態の回路。 1……電話回線に並列接続した回路、1,2…
…増設回路、A,B……一対の電話器、3……切
換えスイツチ、4……使用報知灯、6……第三回
路。

Claims (1)

    【実用新案登録請求の範囲】
  1. 一対の電話器A,Bを一電話回線に並列接続し
    、その回路1に、一方の受話器を上げることによ
    り他方の回線を断つ切換えスイツチ3と、前記一
    方の受話器が通話中であることを知らせる使用報
    知灯4と、両受話器A,Bを上げると前記切換え
    スイツチ3により双方に電流を通して通話状態を
    維持させる第三回路6とから構成される増設回路
    2を組込んだことを特徴とする秘話回路付電話器
JP11563387U 1987-07-28 1987-07-28 Pending JPS6421553U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11563387U JPS6421553U (ja) 1987-07-28 1987-07-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11563387U JPS6421553U (ja) 1987-07-28 1987-07-28

Publications (1)

Publication Number Publication Date
JPS6421553U true JPS6421553U (ja) 1989-02-02

Family

ID=31357470

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11563387U Pending JPS6421553U (ja) 1987-07-28 1987-07-28

Country Status (1)

Country Link
JP (1) JPS6421553U (ja)

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