JPS5414105A - Extension telephone set - Google Patents

Extension telephone set

Info

Publication number
JPS5414105A
JPS5414105A JP7955177A JP7955177A JPS5414105A JP S5414105 A JPS5414105 A JP S5414105A JP 7955177 A JP7955177 A JP 7955177A JP 7955177 A JP7955177 A JP 7955177A JP S5414105 A JPS5414105 A JP S5414105A
Authority
JP
Japan
Prior art keywords
telephone set
extension telephone
extension
wires
pairs
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
JP7955177A
Other languages
Japanese (ja)
Inventor
Shiokazu Fujiwara
Yuichiro Takagawa
Minoru Sasai
Katsumi Fujikawa
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.)
Kanda Tsushin Kogyo Co Ltd
NTT Inc
Original Assignee
Nippon Telegraph and Telephone Corp
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, Kanda Tsushin Kogyo Co Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP7955177A priority Critical patent/JPS5414105A/en
Publication of JPS5414105A publication Critical patent/JPS5414105A/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 obtain the unit having the same functions as conventional telephone sets and less in installation cost and easy for extension, by constituting the main telephone set and the additional telephone set so that they can be connected with two pairs of wires.
JP7955177A 1977-07-05 1977-07-05 Extension telephone set Pending JPS5414105A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7955177A JPS5414105A (en) 1977-07-05 1977-07-05 Extension telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7955177A JPS5414105A (en) 1977-07-05 1977-07-05 Extension telephone set

Publications (1)

Publication Number Publication Date
JPS5414105A true JPS5414105A (en) 1979-02-02

Family

ID=13693134

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7955177A Pending JPS5414105A (en) 1977-07-05 1977-07-05 Extension telephone set

Country Status (1)

Country Link
JP (1) JPS5414105A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6025923A (en) * 1983-07-22 1985-02-08 Otsuka Pharmaceut Co Ltd 15-lipoxygenase inhibitor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5137374U (en) * 1974-09-12 1976-03-19

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5137374U (en) * 1974-09-12 1976-03-19

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6025923A (en) * 1983-07-22 1985-02-08 Otsuka Pharmaceut Co Ltd 15-lipoxygenase inhibitor

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