JPS57112168A - System for switching conference trunk - Google Patents

System for switching conference trunk

Info

Publication number
JPS57112168A
JPS57112168A JP18789980A JP18789980A JPS57112168A JP S57112168 A JPS57112168 A JP S57112168A JP 18789980 A JP18789980 A JP 18789980A JP 18789980 A JP18789980 A JP 18789980A JP S57112168 A JPS57112168 A JP S57112168A
Authority
JP
Japan
Prior art keywords
board
night
switching
conference trunk
conference
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
JP18789980A
Other languages
Japanese (ja)
Inventor
Kenji Takato
Hiroshi Ozawa
Saburo Nishinomiya
Tokuji Koga
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 JP18789980A priority Critical patent/JPS57112168A/en
Publication of JPS57112168A publication Critical patent/JPS57112168A/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)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To reduce the number of conference trunks, by using the night B board, which is switched at night, as a conference trunk for B board which is used in daylight. CONSTITUTION:In respect to the switching (PASS switching) of a network NW in case of connection of the conference trunk of the time division multiple switching system to the B board, the rewrite of a memory for switching control fixes the assignment of time slots among CFT-ATT of a high frequency and makes a specific position of the time slot for the night B board variable only at a switching time for night to use the night B board as a conference trunk for the general B board, and thus, a private conference trunk for the night B board is unnecessary.
JP18789980A 1980-12-29 1980-12-29 System for switching conference trunk Pending JPS57112168A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18789980A JPS57112168A (en) 1980-12-29 1980-12-29 System for switching conference trunk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18789980A JPS57112168A (en) 1980-12-29 1980-12-29 System for switching conference trunk

Publications (1)

Publication Number Publication Date
JPS57112168A true JPS57112168A (en) 1982-07-13

Family

ID=16214137

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18789980A Pending JPS57112168A (en) 1980-12-29 1980-12-29 System for switching conference trunk

Country Status (1)

Country Link
JP (1) JPS57112168A (en)

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