JPS5729896B2 - - Google Patents

Info

Publication number
JPS5729896B2
JPS5729896B2 JP10151275A JP10151275A JPS5729896B2 JP S5729896 B2 JPS5729896 B2 JP S5729896B2 JP 10151275 A JP10151275 A JP 10151275A JP 10151275 A JP10151275 A JP 10151275A JP S5729896 B2 JPS5729896 B2 JP S5729896B2
Authority
JP
Japan
Prior art keywords
economized
minimized
simplified
arithmetic circuit
time sharing
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.)
Expired
Application number
JP10151275A
Other languages
Japanese (ja)
Other versions
JPS5225508A (en
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 filed Critical
Priority to JP10151275A priority Critical patent/JPS5225508A/en
Publication of JPS5225508A publication Critical patent/JPS5225508A/en
Publication of JPS5729896B2 publication Critical patent/JPS5729896B2/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)
  • Time-Division Multiplex Systems (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To obtain a simplified, minimized and economized multi arithmetic circuit by using digital logical ICs for a conference call unit of a time sharing call switching.
JP10151275A 1975-08-21 1975-08-21 Digital conference call unit Granted JPS5225508A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10151275A JPS5225508A (en) 1975-08-21 1975-08-21 Digital conference call unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10151275A JPS5225508A (en) 1975-08-21 1975-08-21 Digital conference call unit

Publications (2)

Publication Number Publication Date
JPS5225508A JPS5225508A (en) 1977-02-25
JPS5729896B2 true JPS5729896B2 (en) 1982-06-25

Family

ID=14302605

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10151275A Granted JPS5225508A (en) 1975-08-21 1975-08-21 Digital conference call unit

Country Status (1)

Country Link
JP (1) JPS5225508A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS555502A (en) * 1978-06-28 1980-01-16 Fujitsu Ltd Audio packet conference telehone system
JPS59196642A (en) * 1983-04-23 1984-11-08 Nippon Telegr & Teleph Corp <Ntt> Privacy device of digital conference telephone set

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51149711A (en) * 1975-06-18 1976-12-22 Oki Electric Ind Co Ltd Conference telephone system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51149711A (en) * 1975-06-18 1976-12-22 Oki Electric Ind Co Ltd Conference telephone system

Also Published As

Publication number Publication date
JPS5225508A (en) 1977-02-25

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