JPH02133044U - - Google Patents

Info

Publication number
JPH02133044U
JPH02133044U JP4139489U JP4139489U JPH02133044U JP H02133044 U JPH02133044 U JP H02133044U JP 4139489 U JP4139489 U JP 4139489U JP 4139489 U JP4139489 U JP 4139489U JP H02133044 U JPH02133044 U JP H02133044U
Authority
JP
Japan
Prior art keywords
extension call
response
ringing signal
circuit
detection 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
JP4139489U
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 JP4139489U priority Critical patent/JPH02133044U/ja
Publication of JPH02133044U publication Critical patent/JPH02133044U/ja
Pending legal-status Critical Current

Links

Description

【図面の簡単な説明】
第１図はこの考案に係る構内自動電話交換機の
ブロツク図である。 １……構内自動電話交換機、２……呼出信号検
出回路、３……応答メツセージ送出回路、４……
内線加入電話転送回路、５，６，７……切換スイ
ツチ。

Claims (1)

  1. 【実用新案登録請求の範囲】 複数の局線および複数の内線加入電話を備えた
    構内自動電話交換機において、 相手からの呼出し信号を検出する呼出信号検出
    回路と、 上記呼出信号検出回路の出力信号に応じて予め
    定められた応答メツセージを送出する応答メツセ
    ージ送出回路と、 相手からの内線呼出し信号に応じて内線加入電
    話を自動中継する内線加入電話転送回路と、 によつて構成したことを特徴とする構内自動電
    話交換機。
JP4139489U 1989-04-07 1989-04-07 Pending JPH02133044U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4139489U JPH02133044U (ja) 1989-04-07 1989-04-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4139489U JPH02133044U (ja) 1989-04-07 1989-04-07

Publications (1)

Publication Number Publication Date
JPH02133044U true JPH02133044U (ja) 1990-11-05

Family

ID=31552021

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4139489U Pending JPH02133044U (ja) 1989-04-07 1989-04-07

Country Status (1)

Country Link
JP (1) JPH02133044U (ja)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4992908A (ja) * 1972-12-27 1974-09-04
JPS56129469A (en) * 1980-03-14 1981-10-09 Fujitsu Ltd Transfer system of incoming call

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4992908A (ja) * 1972-12-27 1974-09-04
JPS56129469A (en) * 1980-03-14 1981-10-09 Fujitsu Ltd Transfer system of incoming call

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