JPH01159443U - - Google Patents

Info

Publication number
JPH01159443U
JPH01159443U JP5439288U JP5439288U JPH01159443U JP H01159443 U JPH01159443 U JP H01159443U JP 5439288 U JP5439288 U JP 5439288U JP 5439288 U JP5439288 U JP 5439288U JP H01159443 U JPH01159443 U JP H01159443U
Authority
JP
Japan
Prior art keywords
telephone line
telephone
line network
predetermined period
signal
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
JP5439288U
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 JP5439288U priority Critical patent/JPH01159443U/ja
Publication of JPH01159443U publication Critical patent/JPH01159443U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Electric Clocks (AREA)

Description

【図面の簡単な説明】
第1図は本考案の一例の構成図、第2図はその
説明のための図、第3図は他の例の説明のための
図である。 1は電話回線制御装置、2は電話回線網、3は
電話機、11,12は電話回線、13はスイツチ
、14はタイマー装置、17は呼出信号検出回路
である。

Claims (1)

  1. 【実用新案登録請求の範囲】 電話回線網と電話機との間に設けられ、 タイマー装置と、 上記タイマー装置によつて設定される所定の期
    間に上記電話回線網から上記電話機に接続される
    電話回線を遮断するスイツチと、 少くとも上記所定の期間に上記電話回線網から
    の信号の有無の識別手段とを有してなる電話回線
    制御装置。
JP5439288U 1988-04-22 1988-04-22 Pending JPH01159443U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5439288U JPH01159443U (ja) 1988-04-22 1988-04-22

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5439288U JPH01159443U (ja) 1988-04-22 1988-04-22

Publications (1)

Publication Number Publication Date
JPH01159443U true JPH01159443U (ja) 1989-11-06

Family

ID=31280326

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5439288U Pending JPH01159443U (ja) 1988-04-22 1988-04-22

Country Status (1)

Country Link
JP (1) JPH01159443U (ja)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5689161A (en) * 1979-12-22 1981-07-20 Kenji Kamiya Telephone line temporary breaking device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5689161A (en) * 1979-12-22 1981-07-20 Kenji Kamiya Telephone line temporary breaking device

Similar Documents

Publication Publication Date Title
JPS62105655U (ja)
JPH01159443U (ja)
JPH03103652U (ja)
JPH0359760U (ja)
JPS6335239U (ja)
JPS63187199U (ja)
JPH039564U (ja)
JPS62169566U (ja)
JPS6361850U (ja)
JPS62169557U (ja)
JPS63106252U (ja)
JPS6447150U (ja)
JPS63106253U (ja)
JPH0273852U (ja)
JPH01137646U (ja)
JPS63538U (ja)
JPH0353058U (ja)
JPS62201555U (ja)
JPH03464U (ja)
JPS6253796U (ja)
JPS6421554U (ja)
JPH0328858U (ja)
JPH0332853U (ja)
JPS6434037U (ja)
JPS63196137U (ja)