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JPS57212856A - Terminal adaptor system - Google Patents

Terminal adaptor system

Info

Publication number
JPS57212856A
JPS57212856A JP9755281A JP9755281A JPS57212856A JP S57212856 A JPS57212856 A JP S57212856A JP 9755281 A JP9755281 A JP 9755281A JP 9755281 A JP9755281 A JP 9755281A JP S57212856 A JPS57212856 A JP S57212856A
Authority
JP
Japan
Prior art keywords
terminal
main trunk
button
telephone
trunk
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
JP9755281A
Other languages
Japanese (ja)
Other versions
JPS644717B2 (en
Inventor
Kazuyuki Yamamoto
Yuichi Yamazaki
Kenichi Ishii
Teruyuki Kubo
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 JP9755281A priority Critical patent/JPS57212856A/en
Publication of JPS57212856A publication Critical patent/JPS57212856A/en
Publication of JPS644717B2 publication Critical patent/JPS644717B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

PURPOSE:To combine the function of a telephone terminal with that of a button telephone, by using a terminal adaptor having functions of a line state display lamp and a line selection button of a button telephone set, and connecting various telephone terminals to the button telephone device via the adaptor. CONSTITUTION:In case of a main trunk call from a telephone terminal 4, off- hook or busy state is made at the telephone terminal 4, a main trunk lamp 10 (101-10n) illuminates, a main trunk in vacant state is selected and a main trunk button 12 (121-12n) corresponding to the trunk is depressed. Then, the information is transmitted to a control circuit 7 of a main device 2 via control circuit 9 (91-9n). The circuit 7 connects an extension from the terminal 4 with a main trunk 1 designated with a main trunk button 12 with a channel switch 14, the information of busy main trunk is transmitted to the control circuit 9 of each button telephone set 3 (31-3n) to change the lamp 10 (101-10n) into busy display. In this state, a dial tone from an exchanger of a station is returned and a dial call tone can be made. Through the operation, the selection of main trunk and dial call can be made via a terminal adaptor 8 from the terminal 4.
JP9755281A 1981-06-25 1981-06-25 Terminal adaptor system Granted JPS57212856A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9755281A JPS57212856A (en) 1981-06-25 1981-06-25 Terminal adaptor system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9755281A JPS57212856A (en) 1981-06-25 1981-06-25 Terminal adaptor system

Publications (2)

Publication Number Publication Date
JPS57212856A true JPS57212856A (en) 1982-12-27
JPS644717B2 JPS644717B2 (en) 1989-01-26

Family

ID=14195399

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9755281A Granted JPS57212856A (en) 1981-06-25 1981-06-25 Terminal adaptor system

Country Status (1)

Country Link
JP (1) JPS57212856A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59221098A (en) * 1983-05-31 1984-12-12 Toshiba Corp Terminal interface device of key telephone device
JPS6096992A (en) * 1983-10-31 1985-05-30 Toshiba Corp Interface system between main device of key telephone set and standard telephone set
JPS60180294A (en) * 1984-02-27 1985-09-14 Nippon Telegr & Teleph Corp <Ntt> Telephone system
JPS61212990A (en) * 1985-03-18 1986-09-20 Nitsuko Ltd Extension telephone calling system
JPS63294057A (en) * 1987-05-26 1988-11-30 Matsushita Electric Works Ltd Telephone system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59221098A (en) * 1983-05-31 1984-12-12 Toshiba Corp Terminal interface device of key telephone device
JPH0588599B2 (en) * 1983-05-31 1993-12-22 Tokyo Shibaura Electric Co
JPS6096992A (en) * 1983-10-31 1985-05-30 Toshiba Corp Interface system between main device of key telephone set and standard telephone set
JPS60180294A (en) * 1984-02-27 1985-09-14 Nippon Telegr & Teleph Corp <Ntt> Telephone system
JPS61212990A (en) * 1985-03-18 1986-09-20 Nitsuko Ltd Extension telephone calling system
JPS63294057A (en) * 1987-05-26 1988-11-30 Matsushita Electric Works Ltd Telephone system

Also Published As

Publication number Publication date
JPS644717B2 (en) 1989-01-26

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