IE822583L - Handsfree telephone facility - Google Patents

Handsfree telephone facility

Info

Publication number
IE822583L
IE822583L IE822583A IE258382A IE822583L IE 822583 L IE822583 L IE 822583L IE 822583 A IE822583 A IE 822583A IE 258382 A IE258382 A IE 258382A IE 822583 L IE822583 L IE 822583L
Authority
IE
Ireland
Prior art keywords
telephone facility
handsfree telephone
handsfree
facility
telephone
Prior art date
Application number
IE822583A
Other versions
IE53672B1 (en
Original Assignee
Deutsche Telephonwerk Kabel
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 Deutsche Telephonwerk Kabel filed Critical Deutsche Telephonwerk Kabel
Publication of IE822583L publication Critical patent/IE822583L/en
Publication of IE53672B1 publication Critical patent/IE53672B1/en

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
IE2583/82A 1981-12-03 1982-10-27 A circiut arrangement for providing a handsfree telephone facility IE53672B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813148305 DE3148305A1 (en) 1981-12-03 1981-12-03 CIRCUIT ARRANGEMENT FOR A HANDS-FREE UNIT

Publications (2)

Publication Number Publication Date
IE822583L true IE822583L (en) 1983-06-03
IE53672B1 IE53672B1 (en) 1989-01-04

Family

ID=6148050

Family Applications (1)

Application Number Title Priority Date Filing Date
IE2583/82A IE53672B1 (en) 1981-12-03 1982-10-27 A circiut arrangement for providing a handsfree telephone facility

Country Status (10)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3211184C2 (en) * 1981-03-31 1985-12-12 A. Grothe & Söhne KG, 5000 Köln Circuit arrangement for a handsfree telephone
DE3301498A1 (en) * 1983-01-14 1984-07-19 Deutsche Telephonwerke Und Kabelindustrie Ag, 1000 Berlin Subscriber telephone station device for telephone switching systems
DE3509658A1 (en) * 1985-03-18 1986-09-18 Drägerwerk AG, 2400 Lübeck Communication unit for a microtelephone set
FR2611408B1 (en) * 1987-02-27 1989-05-26 Radiotechnique Compelec GAIN CONTROL CIRCUIT OF A LOUDSPEAKER AMPLIFIER FOR THE SUPPRESSION OF THE LARSEN EFFECT
WO1990004897A1 (en) * 1988-10-26 1990-05-03 Reptec Hb Telephone plant
DE4012175C2 (en) * 1990-04-14 1995-04-13 Telefunken Microelectron Speakerphone

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2120558A5 (en) * 1971-01-08 1972-08-18 Brault Andre
SE365375B (en) * 1972-12-18 1974-03-18 Ericsson Telefon Ab L M
DE2439740C3 (en) * 1974-08-19 1978-08-24 Siemens Ag, 1000 Berlin Und 8000 Muenchen Circuit arrangement for voice-controlled hands-free devices with different attenuation levels depending on the voice voltages for each voice channel and each direction of speech
DE2710816C3 (en) * 1977-03-11 1980-01-10 Siemens Ag, 1000 Berlin Und 8000 Muenchen Circuit arrangement for a loudspeaker station
DE2714132C3 (en) * 1977-03-30 1980-02-07 Siemens Ag, 1000 Berlin Und 8000 Muenchen Circuit arrangement for a voice-controlled loudspeaker device

Also Published As

Publication number Publication date
FR2517911B1 (en) 1986-04-18
DE3148305C2 (en) 1988-02-04
DK534682A (en) 1983-06-04
GB2110905A (en) 1983-06-22
IT8224414A0 (en) 1982-11-24
GB2110905B (en) 1985-11-13
IE53672B1 (en) 1989-01-04
GR77765B (en) 1984-09-25
BE894144A (en) 1982-12-16
IT1154586B (en) 1987-01-21
LU84322A1 (en) 1983-02-28
DE3148305A1 (en) 1983-06-09
NL8203010A (en) 1983-07-01
IT8224414A1 (en) 1984-05-24
FR2517911A1 (en) 1983-06-10

Similar Documents

Publication Publication Date Title
GB2111800B (en) Telephone sets
DE3262435D1 (en) Cordless telephone set
GB2102249B (en) Telephone line circuit
GB2096434B (en) Loudspeaking telephone system
GB2122454B (en) Loudspeaking telephone
DE3274509D1 (en) Telephone line circuit
IL68359A0 (en) Telephone set
ZA826941B (en) Telephone apparatus
GB2124454B (en) Cordless telephone system
GB2100096B (en) Telephone apparatus
GB2110905B (en) Handsfree telephone facility
DE3264570D1 (en) Telephone set
GB2066023B (en) Telephone line interface
GB2110055B (en) Cordless telephone systems
GB2137049B (en) Handsfree telephone
AU8088782A (en) Cordless telephone system
GB2073542B (en) Telephone handset
GB2107153B (en) Telephone autodiallers
GB2086185B (en) Telephone re-dial facility
GB2105946B (en) Telephone
GB2113043B (en) Telephone dialling system
CA48920S (en) Telephone handset
GB2101451B (en) Telephone instrument
GB8305573D0 (en) Handsfree telephone system
PL234461A1 (en) Telephone set