JPS5862959A - ドアホンの呼び出し信号方式 - Google Patents

ドアホンの呼び出し信号方式

Info

Publication number
JPS5862959A
JPS5862959A JP16072181A JP16072181A JPS5862959A JP S5862959 A JPS5862959 A JP S5862959A JP 16072181 A JP16072181 A JP 16072181A JP 16072181 A JP16072181 A JP 16072181A JP S5862959 A JPS5862959 A JP S5862959A
Authority
JP
Japan
Prior art keywords
call
door phone
telephone
circuit
telephone set
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.)
Granted
Application number
JP16072181A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0129120B2 (enrdf_load_stackoverflow
Inventor
Kosuke Hashimoto
橋本　孔佑
Michiaki Iwanami
岩波　道昭
Masaru Kudo
賢 工藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Meisei Electric Co Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Meisei Electric Co Ltd
Nippon Telegraph and Telephone Corp
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 Meisei Electric Co Ltd, Nippon Telegraph and Telephone Corp filed Critical Meisei Electric Co Ltd
Priority to JP16072181A priority Critical patent/JPS5862959A/ja
Publication of JPS5862959A publication Critical patent/JPS5862959A/ja
Publication of JPH0129120B2 publication Critical patent/JPH0129120B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/02—Telephonic communication systems specially adapted for combination with other electrical systems with bell or annunciator systems
    • H04M11/025—Door telephones

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
JP16072181A 1981-10-08 1981-10-08 ドアホンの呼び出し信号方式 Granted JPS5862959A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16072181A JPS5862959A (ja) 1981-10-08 1981-10-08 ドアホンの呼び出し信号方式

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16072181A JPS5862959A (ja) 1981-10-08 1981-10-08 ドアホンの呼び出し信号方式

Publications (2)

Publication Number Publication Date
JPS5862959A true JPS5862959A (ja) 1983-04-14
JPH0129120B2 JPH0129120B2 (enrdf_load_stackoverflow) 1989-06-07

Family

ID=15721027

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16072181A Granted JPS5862959A (ja) 1981-10-08 1981-10-08 ドアホンの呼び出し信号方式

Country Status (1)

Country Link
JP (1) JPS5862959A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0672182U (ja) * 1993-03-10 1994-10-07 デルタ エレクトロニクス インコーポレイティド 電源フィルタ

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49117705U (enrdf_load_stackoverflow) * 1973-02-09 1974-10-08
JPS5426758U (enrdf_load_stackoverflow) * 1977-07-27 1979-02-21

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49117705U (enrdf_load_stackoverflow) * 1973-02-09 1974-10-08
JPS5426758U (enrdf_load_stackoverflow) * 1977-07-27 1979-02-21

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0672182U (ja) * 1993-03-10 1994-10-07 デルタ エレクトロニクス インコーポレイティド 電源フィルタ

Also Published As

Publication number Publication date
JPH0129120B2 (enrdf_load_stackoverflow) 1989-06-07

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