JPS5537026A - Distribution control type push button telephone - Google Patents

Distribution control type push button telephone

Info

Publication number
JPS5537026A
JPS5537026A JP10978478A JP10978478A JPS5537026A JP S5537026 A JPS5537026 A JP S5537026A JP 10978478 A JP10978478 A JP 10978478A JP 10978478 A JP10978478 A JP 10978478A JP S5537026 A JPS5537026 A JP S5537026A
Authority
JP
Japan
Prior art keywords
telephone
push button
communication
button type
communication line
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
JP10978478A
Other languages
Japanese (ja)
Other versions
JPS5928318B2 (en
Inventor
Kazuyuki Yamamoto
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 JP10978478A priority Critical patent/JPS5928318B2/en
Publication of JPS5537026A publication Critical patent/JPS5537026A/en
Publication of JPS5928318B2 publication Critical patent/JPS5928318B2/en
Expired 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
    • H04M9/005—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line

Landscapes

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

Abstract

PURPOSE:To enable the construction of the push button type telephone without requiring the main device by connecting the communication lines of a plurality of the push button type telephones to the control lines in parallel and making the push button type telephones compact and large number of telephone production possible. CONSTITUTION:There are accommodated a line CO-1 to k in which to the push button type telephone KT-i, other telephone is connected in parallel, an internal communication line INT-1 to l, and a control line CL and provided with a data transmission and receiving circuit T-i and R-i, a control circuit having a communication line INT empty condition mimorizing function CC-i, a communication switch SW-i, and a telephone circuit NW-i. Based on the internal communication line number specifying information and the partner telephone specifying information, the control circuit CC-i supplements the vacancy of the communication line. In accordance with the data transmission and receiving circuit, the data necessary for the relative communication is exchanged and the internal communication line is connected to the telephone circuit by the communication passage switch.
JP10978478A 1978-09-08 1978-09-08 Distributed control button telephone Expired JPS5928318B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10978478A JPS5928318B2 (en) 1978-09-08 1978-09-08 Distributed control button telephone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10978478A JPS5928318B2 (en) 1978-09-08 1978-09-08 Distributed control button telephone

Publications (2)

Publication Number Publication Date
JPS5537026A true JPS5537026A (en) 1980-03-14
JPS5928318B2 JPS5928318B2 (en) 1984-07-12

Family

ID=14519126

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10978478A Expired JPS5928318B2 (en) 1978-09-08 1978-09-08 Distributed control button telephone

Country Status (1)

Country Link
JP (1) JPS5928318B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5856597A (en) * 1981-09-11 1983-04-04 ミテル・コーポレーション Service circuit in telephone system
JPS6172498A (en) * 1984-09-18 1986-04-14 Nakayo Tsushinki:Kk Constitution and connection system of key telephone set
JPS6180993A (en) * 1984-09-21 1986-04-24 アルカテル・エヌ・ブイ Button telephone system which can be distributed and controlled
JPS61294990A (en) * 1985-06-21 1986-12-25 Tamura Electric Works Ltd Data transmission system for key telephone system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5856597A (en) * 1981-09-11 1983-04-04 ミテル・コーポレーション Service circuit in telephone system
JPH0439838B2 (en) * 1981-09-11 1992-06-30
JPS6172498A (en) * 1984-09-18 1986-04-14 Nakayo Tsushinki:Kk Constitution and connection system of key telephone set
JPS6180993A (en) * 1984-09-21 1986-04-24 アルカテル・エヌ・ブイ Button telephone system which can be distributed and controlled
JPS61294990A (en) * 1985-06-21 1986-12-25 Tamura Electric Works Ltd Data transmission system for key telephone system

Also Published As

Publication number Publication date
JPS5928318B2 (en) 1984-07-12

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