JPS5634270A - Connection system between main units in key telephone set - Google Patents

Connection system between main units in key telephone set

Info

Publication number
JPS5634270A
JPS5634270A JP10972479A JP10972479A JPS5634270A JP S5634270 A JPS5634270 A JP S5634270A JP 10972479 A JP10972479 A JP 10972479A JP 10972479 A JP10972479 A JP 10972479A JP S5634270 A JPS5634270 A JP S5634270A
Authority
JP
Japan
Prior art keywords
telephone set
key telephone
key
extension
switch element
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
JP10972479A
Other languages
Japanese (ja)
Other versions
JPS6052635B2 (en
Inventor
Koichi Sekiguchi
Seiya Uchida
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.)
Iwatsu Electric Co Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Iwatsu Electric Co 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 Iwatsu Electric Co Ltd, Nippon Telegraph and Telephone Corp filed Critical Iwatsu Electric Co Ltd
Priority to JP10972479A priority Critical patent/JPS6052635B2/en
Publication of JPS5634270A publication Critical patent/JPS5634270A/en
Publication of JPS6052635B2 publication Critical patent/JPS6052635B2/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M9/00Arrangements for interconnection not involving centralised switching
    • H04M9/002Arrangements 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 make it possible to extend main wires and telephone sets without exchange of the provided equipment, by adding the same kind of key telephone set to the provided key telephone set and by connecting these sets between main units to make the scale double. CONSTITUTION:In case of extension calling service of key telephone set 20 from key telephone set 10, switch 16 is closed by hooking off the handset in key telephone set 10 and operating the extension key and so on, and extension link 31 is connected to key telephone set 10. Next, the dial signal dependent upon dial operations and so on is input to control circuit 34 through extension link 31, and its information is sent to control circuit 44 through control line 53. By these operations, switch elements 18, 55 and 28 are closed by output signals of control circuits 34 and 44, and a service circuit is formed through the route of telephone set 10 switch element 16 extension link 31 switch element 55 main unit link 43 switch element 28 telephone set 20 between telephone sets 10 and 20, thus making service possible.
JP10972479A 1979-08-30 1979-08-30 Connection method between main devices in button telephone equipment Expired JPS6052635B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10972479A JPS6052635B2 (en) 1979-08-30 1979-08-30 Connection method between main devices in button telephone equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10972479A JPS6052635B2 (en) 1979-08-30 1979-08-30 Connection method between main devices in button telephone equipment

Publications (2)

Publication Number Publication Date
JPS5634270A true JPS5634270A (en) 1981-04-06
JPS6052635B2 JPS6052635B2 (en) 1985-11-20

Family

ID=14517612

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10972479A Expired JPS6052635B2 (en) 1979-08-30 1979-08-30 Connection method between main devices in button telephone equipment

Country Status (1)

Country Link
JP (1) JPS6052635B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5922498A (en) * 1982-07-29 1984-02-04 Toshiba Corp Telephone system using line in common
JPS60183897A (en) * 1984-03-02 1985-09-19 Nec Corp Wire broadcast telephone exchange
JPS61218295A (en) * 1985-03-25 1986-09-27 Nitsuko Ltd Connecting system for inter-key telephone sets
JPH07322314A (en) * 1994-05-23 1995-12-08 Hitachi Electron Service Co Ltd Method for increasing extension line for small-sized private branch line controller

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5922498A (en) * 1982-07-29 1984-02-04 Toshiba Corp Telephone system using line in common
JPS60183897A (en) * 1984-03-02 1985-09-19 Nec Corp Wire broadcast telephone exchange
JPS61218295A (en) * 1985-03-25 1986-09-27 Nitsuko Ltd Connecting system for inter-key telephone sets
JPH07322314A (en) * 1994-05-23 1995-12-08 Hitachi Electron Service Co Ltd Method for increasing extension line for small-sized private branch line controller

Also Published As

Publication number Publication date
JPS6052635B2 (en) 1985-11-20

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