JPS6033649Y2 - ボタン電話装置における秘話回路 - Google Patents

ボタン電話装置における秘話回路

Info

Publication number
JPS6033649Y2
JPS6033649Y2 JP13504579U JP13504579U JPS6033649Y2 JP S6033649 Y2 JPS6033649 Y2 JP S6033649Y2 JP 13504579 U JP13504579 U JP 13504579U JP 13504579 U JP13504579 U JP 13504579U JP S6033649 Y2 JPS6033649 Y2 JP S6033649Y2
Authority
JP
Japan
Prior art keywords
telephone
line
circuit
thyristor
central office
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.)
Expired
Application number
JP13504579U
Other languages
English (en)
Japanese (ja)
Other versions
JPS5653850U (enrdf_load_html_response
Inventor
勝行 関根
富夫 西村
Original Assignee
株式会社田村電機製作所
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 by 株式会社田村電機製作所 filed Critical 株式会社田村電機製作所
Priority to JP13504579U priority Critical patent/JPS6033649Y2/ja
Publication of JPS5653850U publication Critical patent/JPS5653850U/ja
Application granted granted Critical
Publication of JPS6033649Y2 publication Critical patent/JPS6033649Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Sub-Exchange Stations And Push- Button Telephones (AREA)
JP13504579U 1979-09-29 1979-09-29 ボタン電話装置における秘話回路 Expired JPS6033649Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13504579U JPS6033649Y2 (ja) 1979-09-29 1979-09-29 ボタン電話装置における秘話回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13504579U JPS6033649Y2 (ja) 1979-09-29 1979-09-29 ボタン電話装置における秘話回路

Publications (2)

Publication Number Publication Date
JPS5653850U JPS5653850U (enrdf_load_html_response) 1981-05-12
JPS6033649Y2 true JPS6033649Y2 (ja) 1985-10-07

Family

ID=29366598

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13504579U Expired JPS6033649Y2 (ja) 1979-09-29 1979-09-29 ボタン電話装置における秘話回路

Country Status (1)

Country Link
JP (1) JPS6033649Y2 (enrdf_load_html_response)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH089944Y2 (ja) * 1989-02-23 1996-03-21 松下電工株式会社 電話コンセント

Also Published As

Publication number Publication date
JPS5653850U (enrdf_load_html_response) 1981-05-12

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