JPH0129120B2 - - Google Patents

Info

Publication number
JPH0129120B2
JPH0129120B2 JP56160721A JP16072181A JPH0129120B2 JP H0129120 B2 JPH0129120 B2 JP H0129120B2 JP 56160721 A JP56160721 A JP 56160721A JP 16072181 A JP16072181 A JP 16072181A JP H0129120 B2 JPH0129120 B2 JP H0129120B2
Authority
JP
Japan
Prior art keywords
call
circuit
signal
telephone
extension
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
JP56160721A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5862959A (ja
Inventor
Kosuke Hashimoto
Michiaki Iwanami
Masaru Kudo
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
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 JPS5862959A (ja) 1983-04-14
JPH0129120B2 true 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)

Families Citing this family (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

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5317685Y2 (enrdf_load_stackoverflow) * 1973-02-09 1978-05-12
JPS5933950Y2 (ja) * 1977-07-27 1984-09-20 株式会社日立ホームテック 温風機

Also Published As

Publication number Publication date
JPS5862959A (ja) 1983-04-14

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