JPS51149711A - Conference telephone system - Google Patents

Conference telephone system

Info

Publication number
JPS51149711A
JPS51149711A JP7317475A JP7317475A JPS51149711A JP S51149711 A JPS51149711 A JP S51149711A JP 7317475 A JP7317475 A JP 7317475A JP 7317475 A JP7317475 A JP 7317475A JP S51149711 A JPS51149711 A JP S51149711A
Authority
JP
Japan
Prior art keywords
conference telephone
telephone system
conference
switchboards
reflections
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
JP7317475A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5537898B2 (cs
Inventor
Koji Hirose
Kiyoshi Hasegawa
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry Co 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP7317475A priority Critical patent/JPS51149711A/ja
Publication of JPS51149711A publication Critical patent/JPS51149711A/ja
Publication of JPS5537898B2 publication Critical patent/JPS5537898B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/561—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities by multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
JP7317475A 1975-06-18 1975-06-18 Conference telephone system Granted JPS51149711A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7317475A JPS51149711A (en) 1975-06-18 1975-06-18 Conference telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7317475A JPS51149711A (en) 1975-06-18 1975-06-18 Conference telephone system

Publications (2)

Publication Number Publication Date
JPS51149711A true JPS51149711A (en) 1976-12-22
JPS5537898B2 JPS5537898B2 (cs) 1980-10-01

Family

ID=13510504

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7317475A Granted JPS51149711A (en) 1975-06-18 1975-06-18 Conference telephone system

Country Status (1)

Country Link
JP (1) JPS51149711A (cs)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5225508A (en) * 1975-08-21 1977-02-25 Nippon Telegr & Teleph Corp <Ntt> Digital conference call unit
JPS5455306A (en) * 1977-10-12 1979-05-02 Fujitsu Ltd Multi-address communication system of time-division switchboard

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5225508A (en) * 1975-08-21 1977-02-25 Nippon Telegr & Teleph Corp <Ntt> Digital conference call unit
JPS5455306A (en) * 1977-10-12 1979-05-02 Fujitsu Ltd Multi-address communication system of time-division switchboard

Also Published As

Publication number Publication date
JPS5537898B2 (cs) 1980-10-01

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