BR7404623D0 - Sistema comutador telefonico tdm - Google Patents

Sistema comutador telefonico tdm

Info

Publication number
BR7404623D0
BR7404623D0 BR4623/74A BR462374A BR7404623D0 BR 7404623 D0 BR7404623 D0 BR 7404623D0 BR 4623/74 A BR4623/74 A BR 4623/74A BR 462374 A BR462374 A BR 462374A BR 7404623 D0 BR7404623 D0 BR 7404623D0
Authority
BR
Brazil
Prior art keywords
switching system
telephone switching
tdm telephone
tdm
telephone
Prior art date
Application number
BR4623/74A
Other languages
English (en)
Inventor
Aro Enn
Original Assignee
North Electric Co
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 North Electric Co filed Critical North Electric Co
Publication of BR7404623D0 publication Critical patent/BR7404623D0/pt

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)
BR4623/74A 1973-06-05 1974-06-05 Sistema comutador telefonico tdm BR7404623D0 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US367233A US3903372A (en) 1973-06-05 1973-06-05 Time division multiplex conferencing system

Publications (1)

Publication Number Publication Date
BR7404623D0 true BR7404623D0 (pt) 1975-01-21

Family

ID=23446400

Family Applications (1)

Application Number Title Priority Date Filing Date
BR4623/74A BR7404623D0 (pt) 1973-06-05 1974-06-05 Sistema comutador telefonico tdm

Country Status (4)

Country Link
US (1) US3903372A (pt)
BR (1) BR7404623D0 (pt)
CA (1) CA1033441A (pt)
IT (1) IT1013361B (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3997730A (en) * 1975-08-29 1976-12-14 Bell Telephone Laboratories, Incorporated Time division conference circuit
US4119807A (en) * 1977-06-13 1978-10-10 Rca Corporation Digital time division multiplex switching system
US4342111A (en) * 1980-11-18 1982-07-27 The United States Of America As Represented By The Director, National Security Agency, U.S. Government Digital bridging apparatus for telephone conferencing system
FR2498403A1 (fr) * 1981-01-21 1982-07-23 Telephonie Ind Commerciale Procede et dispositif de melange de signaux basse frequence transmis par des voies temporelles differentes vers un meme organe telephonique recepteur

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3551600A (en) * 1968-02-23 1970-12-29 Stromberg Carlson Corp High capacity,high side-tone suppression,4-wire conference circuit
GB1234419A (pt) * 1968-08-27 1971-06-03
US3617643A (en) * 1969-07-25 1971-11-02 Bell Telephone Labor Inc Time division switching system employing common transmission highways
US3692947A (en) * 1970-12-21 1972-09-19 Bell Telephone Labor Inc Time division switching system conference circuit
US3787630A (en) * 1972-07-31 1974-01-22 Bell Telephone Labor Inc Time division communication system

Also Published As

Publication number Publication date
IT1013361B (it) 1977-03-30
CA1033441A (en) 1978-06-20
US3903372A (en) 1975-09-02

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