JPS5783959A - Voice conference system using time-division multiple circuit - Google Patents

Voice conference system using time-division multiple circuit

Info

Publication number
JPS5783959A
JPS5783959A JP15812280A JP15812280A JPS5783959A JP S5783959 A JPS5783959 A JP S5783959A JP 15812280 A JP15812280 A JP 15812280A JP 15812280 A JP15812280 A JP 15812280A JP S5783959 A JPS5783959 A JP S5783959A
Authority
JP
Japan
Prior art keywords
conference system
time
subscriber
telephone
voice
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
JP15812280A
Other languages
Japanese (ja)
Inventor
Yoshihiro Tomita
Kazuo Murano
Fumio Amano
Masami Koshikawa
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP15812280A priority Critical patent/JPS5783959A/en
Publication of JPS5783959A publication Critical patent/JPS5783959A/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
    • 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)

Abstract

PURPOSE:To obtain a time-division voice conference system which enables a telephone conference system by processing inside of a telephone terminal equipment. CONSTITUTION:A time slot frame assigned to each subscriber terminal of a telephone conference system which uses a looped time-division circuit consists of three parts, i.e., a synchronizing signal, control information and data; the control information has a call type display bit part indicating all-subscriber simultaneous communication and a subscriber address part for a call with a specific subscriber, and the data part includes digital data obtained by PCM-coding a voice. One frame of a signal received from a circuit is latched 12 and the data part of the latch contents is accumulated by an adder 13 and an accumulator 14. Further, the accumulated contents are latched 15 and D/A-converted 16 to realize a voice conference telephone system.
JP15812280A 1980-11-12 1980-11-12 Voice conference system using time-division multiple circuit Pending JPS5783959A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15812280A JPS5783959A (en) 1980-11-12 1980-11-12 Voice conference system using time-division multiple circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15812280A JPS5783959A (en) 1980-11-12 1980-11-12 Voice conference system using time-division multiple circuit

Publications (1)

Publication Number Publication Date
JPS5783959A true JPS5783959A (en) 1982-05-26

Family

ID=15664772

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15812280A Pending JPS5783959A (en) 1980-11-12 1980-11-12 Voice conference system using time-division multiple circuit

Country Status (1)

Country Link
JP (1) JPS5783959A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60124198A (en) * 1983-12-08 1985-07-03 Mitsubishi Electric Corp Voice communication system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60124198A (en) * 1983-12-08 1985-07-03 Mitsubishi Electric Corp Voice communication system

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