JPS5687970A - Digital button telephone system - Google Patents

Digital button telephone system

Info

Publication number
JPS5687970A
JPS5687970A JP16461979A JP16461979A JPS5687970A JP S5687970 A JPS5687970 A JP S5687970A JP 16461979 A JP16461979 A JP 16461979A JP 16461979 A JP16461979 A JP 16461979A JP S5687970 A JPS5687970 A JP S5687970A
Authority
JP
Japan
Prior art keywords
control
loop
adaptors
voice
signal
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
JP16461979A
Other languages
Japanese (ja)
Inventor
Naofumi Nagai
Yoshio Nakano
Kazuyuki Yamamoto
Isao Kawashima
Michihiro Hamada
Hideo Fukazawa
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.)
Fujitsu Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd, Nippon Telegraph and Telephone Corp filed Critical Fujitsu Ltd
Priority to JP16461979A priority Critical patent/JPS5687970A/en
Publication of JPS5687970A publication Critical patent/JPS5687970A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/02—Arrangements for interconnection not involving centralised switching involving a common line for all parties
    • H04M9/022—Multiplex systems
    • H04M9/025—Time division multiplex systems, e.g. loop systems

Abstract

PURPOSE:To easily enable to realize a communication service for a data other than voice and picture, by digital coding of voice as well as control signal, and performing time sharing multiplex communication through the use of loop shape transmission line for all the information. CONSTITUTION:Stations 1-3 are provided with control units 4-6 performing the catch and release control of channel on loop transmission line and adaptors 9-11. When a calling is made from the terminal, the adaptors receive this and output channel request signal to the channel control section of the loop transmission unit. Thus, this control section detects the cahnnel where the bit of the control time slot is vacant, the bit is rewritten into occupancy and delivered on the loop to deliver the transmission permission signal to the adaptors. Further, when the incoming side responds, the response signal is located on the control time slot, allowing to simply make the communication service for the data other than voice and picture, through the time sharing multiplex communication through the loop.
JP16461979A 1979-12-18 1979-12-18 Digital button telephone system Pending JPS5687970A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16461979A JPS5687970A (en) 1979-12-18 1979-12-18 Digital button telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16461979A JPS5687970A (en) 1979-12-18 1979-12-18 Digital button telephone system

Publications (1)

Publication Number Publication Date
JPS5687970A true JPS5687970A (en) 1981-07-17

Family

ID=15796631

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16461979A Pending JPS5687970A (en) 1979-12-18 1979-12-18 Digital button telephone system

Country Status (1)

Country Link
JP (1) JPS5687970A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59123398A (en) * 1982-12-28 1984-07-17 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Switching circuit network
JPS62135097A (en) * 1985-12-06 1987-06-18 Matsushita Electric Ind Co Ltd Control system for bus-type connection telephone set
JPS636937A (en) * 1986-06-26 1988-01-12 Nec Corp Resources reservating method and device for opponent node
JPS63302690A (en) * 1987-06-02 1988-12-09 Canon Inc Control information transmission system for communication equipment system
JPS6464492A (en) * 1987-09-04 1989-03-10 Toshiba Corp Digital key telephone system
JPS6464493A (en) * 1987-09-04 1989-03-10 Toshiba Corp Digital key telephone system
JPS6464494A (en) * 1987-09-04 1989-03-10 Toshiba Corp Digital key telephone system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5032803A (en) * 1973-07-24 1975-03-29
JPS5032808A (en) * 1973-07-24 1975-03-29

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5032803A (en) * 1973-07-24 1975-03-29
JPS5032808A (en) * 1973-07-24 1975-03-29

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59123398A (en) * 1982-12-28 1984-07-17 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Switching circuit network
JPH0566080B2 (en) * 1982-12-28 1993-09-21 Ibm
JPS62135097A (en) * 1985-12-06 1987-06-18 Matsushita Electric Ind Co Ltd Control system for bus-type connection telephone set
JPS636937A (en) * 1986-06-26 1988-01-12 Nec Corp Resources reservating method and device for opponent node
JPS63302690A (en) * 1987-06-02 1988-12-09 Canon Inc Control information transmission system for communication equipment system
JPS6464492A (en) * 1987-09-04 1989-03-10 Toshiba Corp Digital key telephone system
JPS6464493A (en) * 1987-09-04 1989-03-10 Toshiba Corp Digital key telephone system
JPS6464494A (en) * 1987-09-04 1989-03-10 Toshiba Corp Digital key telephone system

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