JPS5642491A - Time-division switching system - Google Patents

Time-division switching system

Info

Publication number
JPS5642491A
JPS5642491A JP11766679A JP11766679A JPS5642491A JP S5642491 A JPS5642491 A JP S5642491A JP 11766679 A JP11766679 A JP 11766679A JP 11766679 A JP11766679 A JP 11766679A JP S5642491 A JPS5642491 A JP S5642491A
Authority
JP
Japan
Prior art keywords
information
registers
output
switching system
persons
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
JP11766679A
Other languages
Japanese (ja)
Inventor
Hiroyasu Ito
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 JP11766679A priority Critical patent/JPS5642491A/en
Publication of JPS5642491A publication Critical patent/JPS5642491A/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 switching system that enables a talk between two persons and among three persons by performing the superposition or alternative logic operation of selected plural inputs. CONSTITUTION:From the input highway, a coded sound signal is extracted by extracting circuits 1 and 2 and the writted in input buffer memories 3 and 4. With information from bus control register 29, selective read circuit 5 reads the contents of memories 3 and 4 and distributes them to arithmetic registers 26 and 27. The outputs of registers 26 and 27 are supplied to logic operating circuit 28 and on the basis of information from bus control register 29, the contents of registers 26 and 27 are superposed mutually or alternatively selected. The output of logic operating circuit 28 is written in output buffers 7 and 8 by writing circuit 6 and this information is inserted into an adequate time slot on the output highway as the coded sound signal.
JP11766679A 1979-09-12 1979-09-12 Time-division switching system Pending JPS5642491A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11766679A JPS5642491A (en) 1979-09-12 1979-09-12 Time-division switching system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11766679A JPS5642491A (en) 1979-09-12 1979-09-12 Time-division switching system

Publications (1)

Publication Number Publication Date
JPS5642491A true JPS5642491A (en) 1981-04-20

Family

ID=14717270

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11766679A Pending JPS5642491A (en) 1979-09-12 1979-09-12 Time-division switching system

Country Status (1)

Country Link
JP (1) JPS5642491A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58168375A (en) * 1982-03-15 1983-10-04 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン Conference communication connecting method and device
JPS5957558A (en) * 1982-06-24 1984-04-03 ウエスターン　エレクトリック　カムパニー，インコーポレーテッド Linear time division multiplex conference device
JPS60213158A (en) * 1984-04-06 1985-10-25 Nec Corp Bridge cut off system of digital channel switch

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51203A (en) * 1974-06-19 1976-01-05 Mitsubishi Electric Corp TASHATSUWA HOSHIKI

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51203A (en) * 1974-06-19 1976-01-05 Mitsubishi Electric Corp TASHATSUWA HOSHIKI

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58168375A (en) * 1982-03-15 1983-10-04 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン Conference communication connecting method and device
JPH0320946B2 (en) * 1982-03-15 1991-03-20 Fuiritsupusu Furuuiranpenfuaburiken Nv
JPS5957558A (en) * 1982-06-24 1984-04-03 ウエスターン　エレクトリック　カムパニー，インコーポレーテッド Linear time division multiplex conference device
JPS60213158A (en) * 1984-04-06 1985-10-25 Nec Corp Bridge cut off system of digital channel switch

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