JPS5279707A - Key telephone main unit - Google Patents

Key telephone main unit

Info

Publication number
JPS5279707A
JPS5279707A JP15672675A JP15672675A JPS5279707A JP S5279707 A JPS5279707 A JP S5279707A JP 15672675 A JP15672675 A JP 15672675A JP 15672675 A JP15672675 A JP 15672675A JP S5279707 A JPS5279707 A JP S5279707A
Authority
JP
Japan
Prior art keywords
main unit
key telephone
telephone main
asconstruction
reponse
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
JP15672675A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5440404B2 (enEXAMPLES
Inventor
Koichi Sekiguchi
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
Iwasaki Tsushinki KK
Original Assignee
Iwatsu Electric Co Ltd
Iwasaki Tsushinki KK
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, Iwasaki Tsushinki KK filed Critical Iwatsu Electric Co Ltd
Priority to JP15672675A priority Critical patent/JPS5279707A/ja
Publication of JPS5279707A publication Critical patent/JPS5279707A/ja
Priority to US05/967,017 priority patent/US4254306A/en
Publication of JPS5440404B2 publication Critical patent/JPS5440404B2/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
    • H04M9/02—Arrangements for interconnection not involving centralised switching involving a common line for all parties

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
JP15672675A 1975-12-26 1975-12-26 Key telephone main unit Granted JPS5279707A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP15672675A JPS5279707A (en) 1975-12-26 1975-12-26 Key telephone main unit
US05/967,017 US4254306A (en) 1975-12-26 1978-12-06 Key telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15672675A JPS5279707A (en) 1975-12-26 1975-12-26 Key telephone main unit

Publications (2)

Publication Number Publication Date
JPS5279707A true JPS5279707A (en) 1977-07-05
JPS5440404B2 JPS5440404B2 (enEXAMPLES) 1979-12-03

Family

ID=15633978

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15672675A Granted JPS5279707A (en) 1975-12-26 1975-12-26 Key telephone main unit

Country Status (1)

Country Link
JP (1) JPS5279707A (enEXAMPLES)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52104008A (en) * 1976-02-27 1977-09-01 Taiko Denki Seisakusho:Kk Connecting method of button telephone apparatus
JPS53116706A (en) * 1977-03-22 1978-10-12 Tamura Electric Works Ltd Button telephone set

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52104008A (en) * 1976-02-27 1977-09-01 Taiko Denki Seisakusho:Kk Connecting method of button telephone apparatus
JPS53116706A (en) * 1977-03-22 1978-10-12 Tamura Electric Works Ltd Button telephone set

Also Published As

Publication number Publication date
JPS5440404B2 (enEXAMPLES) 1979-12-03

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