JPS53102604A - Conference telephone system - Google Patents

Conference telephone system

Info

Publication number
JPS53102604A
JPS53102604A JP1707577A JP1707577A JPS53102604A JP S53102604 A JPS53102604 A JP S53102604A JP 1707577 A JP1707577 A JP 1707577A JP 1707577 A JP1707577 A JP 1707577A JP S53102604 A JPS53102604 A JP S53102604A
Authority
JP
Japan
Prior art keywords
telephone system
conference telephone
stations
conference
centering
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
JP1707577A
Other languages
Japanese (ja)
Other versions
JPS5924582B2 (en
Inventor
Hideaki Kondo
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 JP1707577A priority Critical patent/JPS5924582B2/en
Publication of JPS53102604A publication Critical patent/JPS53102604A/en
Publication of JPS5924582B2 publication Critical patent/JPS5924582B2/en
Expired 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 enable conference with a good communication quality, by setting the insertion loss of the audio switch circuit optimized depending on the entry stations for each terminal unit, in loudspeaker type conference system among a plurality of stations by centering the center station.
JP1707577A 1977-02-21 1977-02-21 conference call method Expired JPS5924582B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1707577A JPS5924582B2 (en) 1977-02-21 1977-02-21 conference call method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1707577A JPS5924582B2 (en) 1977-02-21 1977-02-21 conference call method

Publications (2)

Publication Number Publication Date
JPS53102604A true JPS53102604A (en) 1978-09-07
JPS5924582B2 JPS5924582B2 (en) 1984-06-11

Family

ID=11933850

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1707577A Expired JPS5924582B2 (en) 1977-02-21 1977-02-21 conference call method

Country Status (1)

Country Link
JP (1) JPS5924582B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02141791U (en) * 1989-04-28 1990-11-29

Also Published As

Publication number Publication date
JPS5924582B2 (en) 1984-06-11

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