GR77765B - - Google Patents

Info

Publication number
GR77765B
GR77765B GR69943A GR820169943A GR77765B GR 77765 B GR77765 B GR 77765B GR 69943 A GR69943 A GR 69943A GR 820169943 A GR820169943 A GR 820169943A GR 77765 B GR77765 B GR 77765B
Authority
GR
Greece
Application number
GR69943A
Other languages
Greek (el)
Inventor
Frank Dipl Ing Bahr
Werner Hubner
Hans Gunther Dipl Ing Luhmann
Gunther Schultz
Original Assignee
Telefonwerke Und Kabelindustri
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 Telefonwerke Und Kabelindustri filed Critical Telefonwerke Und Kabelindustri
Publication of GR77765B publication Critical patent/GR77765B/el

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
GR69943A 1981-12-03 1982-12-01 GR77765B (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813148305 DE3148305A1 (de) 1981-12-03 1981-12-03 Schaltungsanordnung fuer eine freisprecheinrichtung

Publications (1)

Publication Number Publication Date
GR77765B true GR77765B (ja) 1984-09-25

Family

ID=6148050

Family Applications (1)

Application Number Title Priority Date Filing Date
GR69943A GR77765B (ja) 1981-12-03 1982-12-01

Country Status (10)

Country Link
BE (1) BE894144A (ja)
DE (1) DE3148305A1 (ja)
DK (1) DK534682A (ja)
FR (1) FR2517911B1 (ja)
GB (1) GB2110905B (ja)
GR (1) GR77765B (ja)
IE (1) IE53672B1 (ja)
IT (1) IT1154586B (ja)
LU (1) LU84322A1 (ja)
NL (1) NL8203010A (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3211184C2 (de) * 1981-03-31 1985-12-12 A. Grothe & Söhne KG, 5000 Köln Schaltungsanordnung für ein Freisprechtelefon
DE3301498A1 (de) * 1983-01-14 1984-07-19 Deutsche Telephonwerke Und Kabelindustrie Ag, 1000 Berlin Teilnehmersprechstellen-einrichtung fuer fernsprechvermittlungssysteme
DE3509658A1 (de) * 1985-03-18 1986-09-18 Drägerwerk AG, 2400 Lübeck Kommunikationseinheit fuer eine hoer-/sprecheinrichtung
FR2611408B1 (fr) * 1987-02-27 1989-05-26 Radiotechnique Compelec Circuit de commande d e gain d'un amplificateur d'ecoute par haut-parleur pour la suppression de l'effet larsen
WO1990004897A1 (en) * 1988-10-26 1990-05-03 Reptec Hb Telephone plant
DE4012175C2 (de) * 1990-04-14 1995-04-13 Telefunken Microelectron Freisprecheinrichtung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2120558A5 (ja) * 1971-01-08 1972-08-18 Brault Andre
SE365375B (ja) * 1972-12-18 1974-03-18 Ericsson Telefon Ab L M
DE2439740C3 (de) * 1974-08-19 1978-08-24 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltungsanordnung für sprachgesteuerte Freisprechgeräte mit von den Sprechspannungen abhängigem unterschiedlichen Dämpfungshub je Sprachkanal und je Sprechrichtung
DE2710816C3 (de) * 1977-03-11 1980-01-10 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltungsanordnung für eine Lautfernsprechstation
DE2714132C3 (de) * 1977-03-30 1980-02-07 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltungsanordnung für ein sprachgesteuertes Lautfernsprechgerät

Also Published As

Publication number Publication date
IT8224414A0 (it) 1982-11-24
DE3148305C2 (ja) 1988-02-04
DK534682A (da) 1983-06-04
GB2110905A (en) 1983-06-22
IE822583L (en) 1983-06-03
LU84322A1 (de) 1983-02-28
GB2110905B (en) 1985-11-13
FR2517911A1 (fr) 1983-06-10
DE3148305A1 (de) 1983-06-09
IE53672B1 (en) 1989-01-04
NL8203010A (nl) 1983-07-01
BE894144A (fr) 1982-12-16
FR2517911B1 (fr) 1986-04-18
IT8224414A1 (it) 1984-05-24
IT1154586B (it) 1987-01-21

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