BR7906128A - Disposicao de circuito para uma estacao telefonica de alto-falante controlada pela voz,em instalacoes de telecomunicacoes,sobretudo em instalacoes telefonicas - Google Patents

Disposicao de circuito para uma estacao telefonica de alto-falante controlada pela voz,em instalacoes de telecomunicacoes,sobretudo em instalacoes telefonicas

Info

Publication number
BR7906128A
BR7906128A BR7906128A BR7906128A BR7906128A BR 7906128 A BR7906128 A BR 7906128A BR 7906128 A BR7906128 A BR 7906128A BR 7906128 A BR7906128 A BR 7906128A BR 7906128 A BR7906128 A BR 7906128A
Authority
BR
Brazil
Prior art keywords
installations
telephone
voice
over
circuit arrangement
Prior art date
Application number
BR7906128A
Other languages
English (en)
Inventor
K Walla
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of BR7906128A publication Critical patent/BR7906128A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/10—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic with switching of direction of transmission by voice frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Amplifiers (AREA)
BR7906128A 1978-09-28 1979-09-25 Disposicao de circuito para uma estacao telefonica de alto-falante controlada pela voz,em instalacoes de telecomunicacoes,sobretudo em instalacoes telefonicas BR7906128A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782842369 DE2842369A1 (de) 1978-09-28 1978-09-28 Schaltungsanordnung fuer eine sprachgesteuerte lautfernsprechstation in fernmelde-, insbesondere fernsprechanlagen

Publications (1)

Publication Number Publication Date
BR7906128A true BR7906128A (pt) 1980-07-15

Family

ID=6050778

Family Applications (1)

Application Number Title Priority Date Filing Date
BR7906128A BR7906128A (pt) 1978-09-28 1979-09-25 Disposicao de circuito para uma estacao telefonica de alto-falante controlada pela voz,em instalacoes de telecomunicacoes,sobretudo em instalacoes telefonicas

Country Status (6)

Country Link
US (1) US4315103A (pt)
EP (1) EP0009591A1 (pt)
JP (1) JPS5545299A (pt)
AU (1) AU5128079A (pt)
BR (1) BR7906128A (pt)
DE (1) DE2842369A1 (pt)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56105832A (en) * 1980-01-25 1981-08-22 Hitachi Cable Ltd Working method for compression joint and connecting element for pipe type cable
US4346261A (en) * 1980-03-17 1982-08-24 United Networks, Inc. Speaker phones
DE3412111A1 (de) * 1984-03-31 1985-10-10 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung fuer eine sprachgesteuerte freisprecheinrichtung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1282720B (de) * 1966-03-23 1968-11-14 Siemens Ag Schaltungsanordnung fuer sprachgesteuerte Freisprechgeraete
US3610835A (en) * 1970-03-17 1971-10-05 Bell Telephone Labor Inc Loudspeaking telephone
GB1406243A (en) * 1971-10-28 1975-09-17 Gen Electric Co Ltd Loudspeaking telephone instruments
US3725585A (en) * 1972-03-21 1973-04-03 Itt Loudspeaking telephone station circuit
CA976677A (en) * 1973-03-12 1975-10-21 Northern Electric Company Loudspeaking communication terminal apparatus and method of operation
ZA755743B (en) * 1974-09-27 1976-08-25 Gen Electric Improvements in or relating to loudspeaking telephone instruments
CA1058340A (en) * 1975-06-30 1979-07-10 International Standard Electric Corporation Two-way loudspeaking device for telephone stations

Also Published As

Publication number Publication date
US4315103A (en) 1982-02-09
AU5128079A (en) 1980-04-03
EP0009591A1 (de) 1980-04-16
JPS5545299A (en) 1980-03-29
DE2842369A1 (de) 1980-04-10

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