AU574146B2 - Key telephone signalling systems - Google Patents

Key telephone signalling systems

Info

Publication number
AU574146B2
AU574146B2 AU40236/85A AU4023685A AU574146B2 AU 574146 B2 AU574146 B2 AU 574146B2 AU 40236/85 A AU40236/85 A AU 40236/85A AU 4023685 A AU4023685 A AU 4023685A AU 574146 B2 AU574146 B2 AU 574146B2
Authority
AU
Australia
Prior art keywords
key telephone
signalling systems
telephone signalling
systems
key
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.)
Ceased
Application number
AU40236/85A
Other versions
AU4023685A (en
Inventor
Yujiro Makita
Katsuhiko Onotsuka
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.)
Tamura Electric Works Ltd
Original Assignee
Tamura Electric Works Ltd
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 Tamura Electric Works Ltd filed Critical Tamura Electric Works Ltd
Publication of AU4023685A publication Critical patent/AU4023685A/en
Application granted granted Critical
Publication of AU574146B2 publication Critical patent/AU574146B2/en
Anticipated expiration legal-status Critical
Ceased 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
    • H04M9/003—Transmission of control signals from or to the key telephone set; signalling equipment at key telephone set, e.g. keyboard or display equipment

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
AU40236/85A 1984-03-21 1985-03-20 Key telephone signalling systems Ceased AU574146B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP59-52093 1984-03-21
JP59052093A JPS60197095A (en) 1984-03-21 1984-03-21 Signal transmission system of pushbutton telephone set

Publications (2)

Publication Number Publication Date
AU4023685A AU4023685A (en) 1985-09-26
AU574146B2 true AU574146B2 (en) 1988-06-30

Family

ID=12905217

Family Applications (1)

Application Number Title Priority Date Filing Date
AU40236/85A Ceased AU574146B2 (en) 1984-03-21 1985-03-20 Key telephone signalling systems

Country Status (2)

Country Link
JP (1) JPS60197095A (en)
AU (1) AU574146B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6390249A (en) * 1986-10-03 1988-04-21 Oki Electric Ind Co Ltd Response signal system in data communication

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6041375B2 (en) * 1979-08-22 1985-09-17 富士通株式会社 Information error detection method
JPS57108994A (en) * 1980-12-25 1982-07-07 Mitsubishi Electric Corp Centralized automatic gage examination device
JPS58213597A (en) * 1982-06-05 1983-12-12 Nitsuko Ltd Key telephone device

Also Published As

Publication number Publication date
AU4023685A (en) 1985-09-26
JPH0310274B2 (en) 1991-02-13
JPS60197095A (en) 1985-10-05

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