JPS5240906A - Conference telephone conversation system through time division exchang e - Google Patents

Conference telephone conversation system through time division exchang e

Info

Publication number
JPS5240906A
JPS5240906A JP11691275A JP11691275A JPS5240906A JP S5240906 A JPS5240906 A JP S5240906A JP 11691275 A JP11691275 A JP 11691275A JP 11691275 A JP11691275 A JP 11691275A JP S5240906 A JPS5240906 A JP S5240906A
Authority
JP
Japan
Prior art keywords
exchang
time division
telephone conversation
conversation system
conference telephone
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
JP11691275A
Other languages
Japanese (ja)
Other versions
JPS5715507B2 (en
Inventor
Masami Miyazaki
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.)
TOUA TOKUSHIYU DENKI KK
Toa Corp
Toa Tokushu Denki KK
Original Assignee
TOUA TOKUSHIYU DENKI KK
Toa Electric Co Ltd
Toa Tokushu Denki KK
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 TOUA TOKUSHIYU DENKI KK, Toa Electric Co Ltd, Toa Tokushu Denki KK filed Critical TOUA TOKUSHIYU DENKI KK
Priority to JP11691275A priority Critical patent/JPS5240906A/en
Priority to US05/703,068 priority patent/US4097694A/en
Publication of JPS5240906A publication Critical patent/JPS5240906A/en
Publication of JPS5715507B2 publication Critical patent/JPS5715507B2/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/02—Telephonic communication systems specially adapted for combination with other electrical systems with bell or annunciator systems
    • H04M11/022—Paging systems

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:The conference call trunk is formed by combining plural normal call trunks of time deivsion exchange in order to give all subscribers the conference call operation function.
JP11691275A 1975-07-09 1975-09-26 Conference telephone conversation system through time division exchang e Granted JPS5240906A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP11691275A JPS5240906A (en) 1975-09-26 1975-09-26 Conference telephone conversation system through time division exchang e
US05/703,068 US4097694A (en) 1975-07-09 1976-07-06 Time-division telephone system embodying trunks having demodulating-adder circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11691275A JPS5240906A (en) 1975-09-26 1975-09-26 Conference telephone conversation system through time division exchang e

Publications (2)

Publication Number Publication Date
JPS5240906A true JPS5240906A (en) 1977-03-30
JPS5715507B2 JPS5715507B2 (en) 1982-03-31

Family

ID=14698717

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11691275A Granted JPS5240906A (en) 1975-07-09 1975-09-26 Conference telephone conversation system through time division exchang e

Country Status (1)

Country Link
JP (1) JPS5240906A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63292708A (en) * 1987-05-25 1988-11-30 Nec Corp Nonlinear signal generating circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4898705A (en) * 1972-03-27 1973-12-14

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4898705A (en) * 1972-03-27 1973-12-14

Also Published As

Publication number Publication date
JPS5715507B2 (en) 1982-03-31

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