JPS5526773A - Conference telephone set - Google Patents

Conference telephone set

Info

Publication number
JPS5526773A
JPS5526773A JP9985978A JP9985978A JPS5526773A JP S5526773 A JPS5526773 A JP S5526773A JP 9985978 A JP9985978 A JP 9985978A JP 9985978 A JP9985978 A JP 9985978A JP S5526773 A JPS5526773 A JP S5526773A
Authority
JP
Japan
Prior art keywords
conference
transmission
participators
reception
amplified
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.)
Pending
Application number
JP9985978A
Other languages
Japanese (ja)
Inventor
Tetsuo Ishizaka
Kinichi Uno
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP9985978A priority Critical patent/JPS5526773A/en
Publication of JPS5526773A publication Critical patent/JPS5526773A/en
Pending 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)

Abstract

PURPOSE:To make it possible to confirm the state of a party conference room between remote conference participators by providing a transmission part with a conversational microphone and signal generating part which generates a message and music and then by performing switching transmission by a switch part. CONSTITUTION:In ordinary conference communication, change-over part 6 of transmission part 1 is connected to microphone part 2 and a signal is amplified by transmitting amplifier 7 to a line transmission level and then sent out to transmission-line circuit terminal 8. In reception part 11, the reception signal arriving at terminal 14 is amplified by reception line amplifier 13 and applied to speaker 12. Until conference participators all gather in a conference room, change-over part 6 of transmission part 1 is connected to signal generating part 5 to send a message or music via amlifier 7. Consequently, in the session of remote conference, confirmation that the party conference room is in a stand-by state can be made until all conference participators gathers, so that the smooth conference will be carried out.
JP9985978A 1978-08-16 1978-08-16 Conference telephone set Pending JPS5526773A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9985978A JPS5526773A (en) 1978-08-16 1978-08-16 Conference telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9985978A JPS5526773A (en) 1978-08-16 1978-08-16 Conference telephone set

Publications (1)

Publication Number Publication Date
JPS5526773A true JPS5526773A (en) 1980-02-26

Family

ID=14258516

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9985978A Pending JPS5526773A (en) 1978-08-16 1978-08-16 Conference telephone set

Country Status (1)

Country Link
JP (1) JPS5526773A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5134605A (en) * 1974-09-19 1976-03-24 Iwatsu Electric Co Ltd HORYUONSOSHUTSUKINOOJUSURU DENWAKI

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5134605A (en) * 1974-09-19 1976-03-24 Iwatsu Electric Co Ltd HORYUONSOSHUTSUKINOOJUSURU DENWAKI

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