BE812636A - Circuit de conference etablissant des communications avec passage de 2 fils a 4 fils a l'interieur d'un pont - Google Patents

Circuit de conference etablissant des communications avec passage de 2 fils a 4 fils a l'interieur d'un pont

Info

Publication number
BE812636A
BE812636A BE142280A BE142280A BE812636A BE 812636 A BE812636 A BE 812636A BE 142280 A BE142280 A BE 142280A BE 142280 A BE142280 A BE 142280A BE 812636 A BE812636 A BE 812636A
Authority
BE
Belgium
Prior art keywords
wires
bridge
passage
establishing communications
conference circuit
Prior art date
Application number
BE142280A
Other languages
English (en)
French (fr)
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
Publication of BE812636A publication Critical patent/BE812636A/xx

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
    • 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)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Amplifiers (AREA)
BE142280A 1973-03-22 1974-03-21 Circuit de conference etablissant des communications avec passage de 2 fils a 4 fils a l'interieur d'un pont BE812636A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00343826A US3824344A (en) 1973-03-22 1973-03-22 Conference bridge circuit

Publications (1)

Publication Number Publication Date
BE812636A true BE812636A (fr) 1974-07-15

Family

ID=23347840

Family Applications (1)

Application Number Title Priority Date Filing Date
BE142280A BE812636A (fr) 1973-03-22 1974-03-21 Circuit de conference etablissant des communications avec passage de 2 fils a 4 fils a l'interieur d'un pont

Country Status (11)

Country Link
US (1) US3824344A (xx)
JP (1) JPS557986B2 (xx)
BE (1) BE812636A (xx)
CA (1) CA992229A (xx)
CH (1) CH589986A5 (xx)
DE (1) DE2413075C3 (xx)
FR (1) FR2222811B1 (xx)
GB (1) GB1447694A (xx)
IT (1) IT1009344B (xx)
NL (1) NL165016C (xx)
SE (1) SE397162B (xx)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3882276A (en) * 1974-03-22 1975-05-06 Bell Telephone Labor Inc Conferencing system utilizing oppositely phased hybrids
US3885100A (en) * 1974-05-31 1975-05-20 Bell Telephone Labor Inc Six-port conference amplifier circuit
USRE30111E (en) * 1974-10-15 1979-10-09 Motorola, Inc. Digital single signal line full duplex method and apparatus
US3993867A (en) * 1974-10-15 1976-11-23 Motorola, Inc. Digital single signal line full duplex method and apparatus
US3970797A (en) * 1975-01-13 1976-07-20 Gte Sylvania Incorporated Digital conference bridge
US3991279A (en) * 1975-05-23 1976-11-09 Bell Telephone Laboratories, Incorporated Monobus interface circuit
US3991280A (en) * 1975-05-23 1976-11-09 Bell Telephone Laboratories, Incorporated Monobus variable resistance transmission circuit
US4045615A (en) * 1976-05-21 1977-08-30 Bell Telephone Laboratories, Incorporated Monobus interface circuit using opto-coupled hybrids
US4139731A (en) * 1977-09-12 1979-02-13 Wescom, Inc. Telephone conference system with active analog conference
JPS5921237B2 (ja) * 1978-02-01 1984-05-18 ミテル・コ−ポレ−シヨン 電話ライン回路
DE2833712C3 (de) * 1978-07-28 1982-04-08 Siemens AG, 1000 Berlin und 8000 München Nachrichtenübertragungseinrichtung mit mehreren aus separaten Sende- und Empfangsleitungen gebildeten Übertragungswegen
CA1154185A (en) * 1981-01-23 1983-09-20 Patrick R. Beirne Subscriber line interface circuit
JPS5976160U (ja) * 1982-11-12 1984-05-23 富士通株式会社 拡声会議電話装置
FI79769C (fi) * 1988-06-10 1991-01-14 Heikki Malkki Snabbtelefonsystem samt foerfarande foer uppkoppling i ett snabbtelefonsystem.
US4982426A (en) * 1989-01-19 1991-01-01 Northern Telecom Limited Telecommunications line interface circuits
US5579530A (en) * 1992-06-11 1996-11-26 Intel Corporation Method and apparatus for dynamically allocating access time to a resource shared between a peripheral bus and a host bus by dynamically controlling the size of burst data transfers on the peripheral bus

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3108157A (en) * 1959-06-15 1963-10-22 Bell Telephone Labor Inc Multiple station communication circuit
US3060265A (en) * 1960-01-26 1962-10-23 Itt Conference call circuit
US3511931A (en) * 1966-02-02 1970-05-12 Sylvania Electric Prod Conferencing networks employing virtual ground summation to obtain isolation
US3524929A (en) * 1967-06-29 1970-08-18 Automatic Elect Lab Telephone conference circuit
US3502823A (en) * 1967-10-26 1970-03-24 Bell Telephone Labor Inc Hybridless bilateral transmission circuit
FR2120248A5 (xx) * 1970-12-04 1972-08-18 Int Standard Electric Corp
US3761624A (en) * 1972-07-31 1973-09-25 Bell Telephone Labor Inc Time division signal transfer network
US3789152A (en) * 1972-12-11 1974-01-29 Bell Telephone Labor Inc Data format converter
US3789154A (en) * 1972-12-11 1974-01-29 Bell Telephone Labor Inc Switchhook status signaling arrangement
US3787631A (en) * 1972-12-11 1974-01-22 Bell Telephone Labor Inc Time slot number compensating arrangement

Also Published As

Publication number Publication date
DE2413075A1 (de) 1974-10-03
JPS49129408A (xx) 1974-12-11
IT1009344B (it) 1976-12-10
GB1447694A (en) 1976-08-25
FR2222811B1 (xx) 1979-01-26
AU6676474A (en) 1975-09-18
CH589986A5 (xx) 1977-07-29
JPS557986B2 (xx) 1980-02-29
NL165016B (nl) 1980-09-15
DE2413075C3 (de) 1980-09-11
FR2222811A1 (xx) 1974-10-18
NL7403597A (xx) 1974-09-24
SE397162B (sv) 1977-10-17
US3824344A (en) 1974-07-16
CA992229A (en) 1976-06-29
NL165016C (nl) 1981-02-16
DE2413075B2 (de) 1976-12-23

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: WESTERN ELECTRIC CY INC.

Effective date: 19890331