JPH0366257U - - Google Patents

Info

Publication number
JPH0366257U
JPH0366257U JP12465789U JP12465789U JPH0366257U JP H0366257 U JPH0366257 U JP H0366257U JP 12465789 U JP12465789 U JP 12465789U JP 12465789 U JP12465789 U JP 12465789U JP H0366257 U JPH0366257 U JP H0366257U
Authority
JP
Japan
Prior art keywords
base unit
ring back
connection operation
exchange
call
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
JP12465789U
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 JP12465789U priority Critical patent/JPH0366257U/ja
Publication of JPH0366257U publication Critical patent/JPH0366257U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)

Description

【図面の簡単な説明】
第1図は本考案に係るドアホン呼出確認装置が
設けられた宅内交換機の要部ブロツク図である。 10……親機、14,16,18……ドアホン
、20……切替器、22……CPU、24……音
声ライン、26……コールライン、32……リン
グバツクトーン発生器。

Claims (1)

  1. 【実用新案登録請求の範囲】 電話回線に接続された親機と、該親機に接続さ
    れ親機での接続操作によつて通話可能となる少な
    くとも1個のドアホンと、を含む宅内交換機にお
    いて、 前記親機には前記接続操作によつて所定回数の
    リングバツクトーンを親機の受話器に供給するリ
    ングバツクトーン発生器が内蔵されていることを
    特徴とする宅内交換機におけるドアホン呼出確認
    装置。
JP12465789U 1989-10-25 1989-10-25 Pending JPH0366257U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12465789U JPH0366257U (ja) 1989-10-25 1989-10-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12465789U JPH0366257U (ja) 1989-10-25 1989-10-25

Publications (1)

Publication Number Publication Date
JPH0366257U true JPH0366257U (ja) 1991-06-27

Family

ID=31672564

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12465789U Pending JPH0366257U (ja) 1989-10-25 1989-10-25

Country Status (1)

Country Link
JP (1) JPH0366257U (ja)

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