JPS53108209A - Interphone equipment - Google Patents

Interphone equipment

Info

Publication number
JPS53108209A
JPS53108209A JP2309777A JP2309777A JPS53108209A JP S53108209 A JPS53108209 A JP S53108209A JP 2309777 A JP2309777 A JP 2309777A JP 2309777 A JP2309777 A JP 2309777A JP S53108209 A JPS53108209 A JP S53108209A
Authority
JP
Japan
Prior art keywords
interphone equipment
interphone
equipment
conference
persons
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
JP2309777A
Other languages
Japanese (ja)
Other versions
JPS5942509B2 (en
Inventor
Haruo Hiki
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP2309777A priority Critical patent/JPS5942509B2/en
Publication of JPS53108209A publication Critical patent/JPS53108209A/en
Publication of JPS5942509B2 publication Critical patent/JPS5942509B2/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

Abstract

PURPOSE:To enable the call for a number of persons at a conference and others through a simple wiring and constitution, by using the common transmission line.
JP2309777A 1977-03-03 1977-03-03 intercom device Expired JPS5942509B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2309777A JPS5942509B2 (en) 1977-03-03 1977-03-03 intercom device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2309777A JPS5942509B2 (en) 1977-03-03 1977-03-03 intercom device

Publications (2)

Publication Number Publication Date
JPS53108209A true JPS53108209A (en) 1978-09-20
JPS5942509B2 JPS5942509B2 (en) 1984-10-15

Family

ID=12100934

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2309777A Expired JPS5942509B2 (en) 1977-03-03 1977-03-03 intercom device

Country Status (1)

Country Link
JP (1) JPS5942509B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0235863A (en) * 1988-07-26 1990-02-06 Matsushita Electric Works Ltd Adapter for television interphone system and television interphone system using adapter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0235863A (en) * 1988-07-26 1990-02-06 Matsushita Electric Works Ltd Adapter for television interphone system and television interphone system using adapter

Also Published As

Publication number Publication date
JPS5942509B2 (en) 1984-10-15

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Legal Events

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