JPS5297604A - Extension telephone system - Google Patents

Extension telephone system

Info

Publication number
JPS5297604A
JPS5297604A JP1314276A JP1314276A JPS5297604A JP S5297604 A JPS5297604 A JP S5297604A JP 1314276 A JP1314276 A JP 1314276A JP 1314276 A JP1314276 A JP 1314276A JP S5297604 A JPS5297604 A JP S5297604A
Authority
JP
Japan
Prior art keywords
telephone system
extension telephone
telephone
jack
plug
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
JP1314276A
Other languages
Japanese (ja)
Inventor
Masao Makino
Akinobu Sekiguchi
Nobuo Yamato
Yoshio Nagasaki
Takashi Sasaki
Shuichi Nishimuta
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
Taiko Electric Works Ltd
Kanda Tsushin Kogyo Co Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
Taiko Electric Works Ltd
Kanda Tsushin Kogyo Co Ltd
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, Taiko Electric Works Ltd, Kanda Tsushin Kogyo Co Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP1314276A priority Critical patent/JPS5297604A/en
Publication of JPS5297604A publication Critical patent/JPS5297604A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/71—Substation extension arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To realize necessary telephone service and to eliminate installation work by inserting the plug of telephone or main unit into the jack of parallel connection.
JP1314276A 1976-02-12 1976-02-12 Extension telephone system Pending JPS5297604A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1314276A JPS5297604A (en) 1976-02-12 1976-02-12 Extension telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1314276A JPS5297604A (en) 1976-02-12 1976-02-12 Extension telephone system

Publications (1)

Publication Number Publication Date
JPS5297604A true JPS5297604A (en) 1977-08-16

Family

ID=11824898

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1314276A Pending JPS5297604A (en) 1976-02-12 1976-02-12 Extension telephone system

Country Status (1)

Country Link
JP (1) JPS5297604A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5487004A (en) * 1977-12-23 1979-07-11 Nippon Telegr & Teleph Corp <Ntt> Plug-in telephone holding device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5487004A (en) * 1977-12-23 1979-07-11 Nippon Telegr & Teleph Corp <Ntt> Plug-in telephone holding device

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