JPS5313806A - Telephone extension system - Google Patents

Telephone extension system

Info

Publication number
JPS5313806A
JPS5313806A JP8723776A JP8723776A JPS5313806A JP S5313806 A JPS5313806 A JP S5313806A JP 8723776 A JP8723776 A JP 8723776A JP 8723776 A JP8723776 A JP 8723776A JP S5313806 A JPS5313806 A JP S5313806A
Authority
JP
Japan
Prior art keywords
telephone extension
extension system
telephone
transfer
plural number
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
JP8723776A
Other languages
Japanese (ja)
Other versions
JPS5528628B2 (en
Inventor
Masaki Ogawa
Minoru Sasai
Takashi Sasaki
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 JP8723776A priority Critical patent/JPS5313806A/en
Publication of JPS5313806A publication Critical patent/JPS5313806A/en
Publication of JPS5528628B2 publication Critical patent/JPS5528628B2/ja
Granted 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
    • H04M1/68—Circuit arrangements for preventing eavesdropping
    • H04M1/70—Lock-out or secrecy arrangements in party-line systems

Landscapes

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

Abstract

PURPOSE:To realize a simple and economical system, by adding the communicating call for transfer and the privacy functions to the telephone extension in which a plural number of telephones utilize one telephone line.
JP8723776A 1976-07-23 1976-07-23 Telephone extension system Granted JPS5313806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8723776A JPS5313806A (en) 1976-07-23 1976-07-23 Telephone extension system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8723776A JPS5313806A (en) 1976-07-23 1976-07-23 Telephone extension system

Publications (2)

Publication Number Publication Date
JPS5313806A true JPS5313806A (en) 1978-02-07
JPS5528628B2 JPS5528628B2 (en) 1980-07-29

Family

ID=13909212

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8723776A Granted JPS5313806A (en) 1976-07-23 1976-07-23 Telephone extension system

Country Status (1)

Country Link
JP (1) JPS5313806A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59180190A (en) * 1983-03-26 1984-10-13 東海ゴム工業株式会社 Hose joint
JPS62288791A (en) * 1986-04-22 1987-12-15 ザ・ゲ−ツ・ラバ−・カンパニ− Assembly of connected hose
JPH0262496A (en) * 1988-08-29 1990-03-02 Tokai Rubber Ind Ltd Manufacture of hose having joint
JPH0266394A (en) * 1988-08-30 1990-03-06 Tokai Rubber Ind Ltd Hose having joint
JPH02221791A (en) * 1989-02-02 1990-09-04 Teleflex Inc Coated woven hose assembly and manufacture thereof
JPH02236086A (en) * 1989-03-07 1990-09-18 Yokohama Rubber Co Ltd:The Join of hose and joint fitting

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4915083A (en) * 1972-05-22 1974-02-09
JPS5042606U (en) * 1973-08-20 1975-04-30

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4915083A (en) * 1972-05-22 1974-02-09
JPS5042606U (en) * 1973-08-20 1975-04-30

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59180190A (en) * 1983-03-26 1984-10-13 東海ゴム工業株式会社 Hose joint
JPH034800B2 (en) * 1983-03-26 1991-01-23 Tokai Rubber Ind Ltd
JPS62288791A (en) * 1986-04-22 1987-12-15 ザ・ゲ−ツ・ラバ−・カンパニ− Assembly of connected hose
JPH0262496A (en) * 1988-08-29 1990-03-02 Tokai Rubber Ind Ltd Manufacture of hose having joint
JPH0266394A (en) * 1988-08-30 1990-03-06 Tokai Rubber Ind Ltd Hose having joint
JPH02221791A (en) * 1989-02-02 1990-09-04 Teleflex Inc Coated woven hose assembly and manufacture thereof
JPH0577915B2 (en) * 1989-02-02 1993-10-27 Teleflex Inc
JPH02236086A (en) * 1989-03-07 1990-09-18 Yokohama Rubber Co Ltd:The Join of hose and joint fitting

Also Published As

Publication number Publication date
JPS5528628B2 (en) 1980-07-29

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