JPH0164248U - - Google Patents

Info

Publication number
JPH0164248U
JPH0164248U JP1987157977U JP15797787U JPH0164248U JP H0164248 U JPH0164248 U JP H0164248U JP 1987157977 U JP1987157977 U JP 1987157977U JP 15797787 U JP15797787 U JP 15797787U JP H0164248 U JPH0164248 U JP H0164248U
Authority
JP
Japan
Prior art keywords
pulse
dial
switching means
polarity reversal
circuit
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
JP1987157977U
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 JP1987157977U priority Critical patent/JPH0164248U/ja
Publication of JPH0164248U publication Critical patent/JPH0164248U/ja
Pending legal-status Critical Current

Links

Description

【図面の簡単な説明】
第1図は本考案の実施例における電話機のブロ
ツク図である。 7:ダイヤルボタン、8:ダイアラー回路、9
:切換スイツチ、10:極性反転検出回路。

Claims (1)

    【実用新案登録請求の範囲】
  1. ダイヤルボタンのボタン操作に従つてダイヤル
    パルスを発信するダイアラー回路と、該ダイアラ
    ー回路の発信パルスをダイヤルパルスからトーン
    パルスに切換える切換手段とを備えるものにおい
    て、相手方電話機のオフフツクによる極性反転を
    検出して上記切換手段を動作させる極性反転検出
    回路を設けたことを特徴とする電話機。
JP1987157977U 1987-10-15 1987-10-15 Pending JPH0164248U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987157977U JPH0164248U (ja) 1987-10-15 1987-10-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987157977U JPH0164248U (ja) 1987-10-15 1987-10-15

Publications (1)

Publication Number Publication Date
JPH0164248U true JPH0164248U (ja) 1989-04-25

Family

ID=31437892

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987157977U Pending JPH0164248U (ja) 1987-10-15 1987-10-15

Country Status (1)

Country Link
JP (1) JPH0164248U (ja)

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