CH607486A5 - - Google Patents

Info

Publication number
CH607486A5
CH607486A5 CH836176A CH836176A CH607486A5 CH 607486 A5 CH607486 A5 CH 607486A5 CH 836176 A CH836176 A CH 836176A CH 836176 A CH836176 A CH 836176A CH 607486 A5 CH607486 A5 CH 607486A5
Authority
CH
Switzerland
Application number
CH836176A
Inventor
Roger Edward Holtz
Roger Allen Radosevich
Original Assignee
Western 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 Western Electric Co filed Critical Western Electric Co
Publication of CH607486A5 publication Critical patent/CH607486A5/xx

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)
  • Amplifiers (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
CH836176A 1975-06-30 1976-06-30 CH607486A5 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/591,956 US3963876A (en) 1975-06-30 1975-06-30 Amplifier circuit for increasing transmit and receive levels in a telephone hybrid network

Publications (1)

Publication Number Publication Date
CH607486A5 true CH607486A5 (fr) 1978-12-29

Family

ID=24368655

Family Applications (1)

Application Number Title Priority Date Filing Date
CH836176A CH607486A5 (fr) 1975-06-30 1976-06-30

Country Status (13)

Country Link
US (1) US3963876A (fr)
JP (1) JPS526004A (fr)
AU (1) AU497007B2 (fr)
BE (1) BE843421A (fr)
CA (1) CA1039873A (fr)
CH (1) CH607486A5 (fr)
DE (1) DE2629033A1 (fr)
ES (1) ES449356A1 (fr)
FR (1) FR2316811A1 (fr)
IL (1) IL49923A0 (fr)
IT (1) IT1063840B (fr)
NL (1) NL7607118A (fr)
SE (1) SE7607374L (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1056970A (fr) * 1977-01-10 1979-06-19 Northern Telecom Limited Reseau electronique pour poste telephonique
US4178484A (en) * 1977-06-27 1979-12-11 Vincent Ogden W Long line telephone system with an amplifying substation
US4112262A (en) * 1977-07-26 1978-09-05 Bell Telephone Laboratories, Incorporated Telephone station repeater
US4268723A (en) * 1979-09-04 1981-05-19 Western Electric Company Circuits and methods for initializing the loop current of a telephone set
FR2481550B1 (fr) * 1980-04-25 1985-08-02 Trt Telecom Radio Electr Dispositif de protection contre l'effet larsen dans un poste telephonique a haut-parleur
KR820001673B1 (ko) * 1981-03-18 1982-09-15 금성통신 주식회사 음성 스위칭 회로
USRE33309E (en) * 1981-06-15 1990-08-21 Walker Equipment Corporation Telephone handset amplifier circuit
US4466120A (en) * 1981-06-15 1984-08-14 Walker Equipment Corporation Telephone handset amplifier circuit
US4588859A (en) * 1983-08-02 1986-05-13 Zvie Liberman Two channel audio communication system
US4577310A (en) * 1984-05-16 1986-03-18 Tie/Communications, Inc. Station interface for digital electronic telephone switching system having centralized digital audio processor
JPS6195151U (fr) * 1984-11-27 1986-06-19
AU645860B2 (en) * 1990-12-18 1994-01-27 Alcatel Australia Limited Method of automatically adjusting side-tone in a telephone subset
US6125630A (en) * 1995-10-27 2000-10-03 Tuff Torq Corporation Axle driving apparatus
US5920846A (en) * 1996-02-27 1999-07-06 Southwestern Bell Telephone Co. Method and system for processing a service request relating to installation, maintenance or repair of telecommunications services provided to a customer premises
US6993125B2 (en) * 2003-03-06 2006-01-31 Avaya Technology Corp. Variable sidetone system for reducing amplitude induced distortion

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE759917A (fr) * 1969-12-08 1971-05-17 Western Electric Co Reseau a frequence acoustique
US3751602A (en) * 1971-08-13 1973-08-07 Bell Telephone Labor Inc Loudspeaking telephone
US3823273A (en) * 1971-12-17 1974-07-09 Gte Automatic Electric Lab Inc Subscriber's telephone circuit
GB1406663A (en) * 1972-08-22 1975-09-17 Standard Telephones Cables Ltd Telphone subset circuits
US3889059A (en) * 1973-03-26 1975-06-10 Northern Electric Co Loudspeaking communication terminal apparatus and method of operation

Also Published As

Publication number Publication date
DE2629033A1 (de) 1977-01-27
US3963876A (en) 1976-06-15
BE843421A (fr) 1976-10-18
ES449356A1 (es) 1977-07-16
IT1063840B (it) 1985-02-18
IL49923A0 (en) 1976-08-31
AU497007B2 (en) 1978-11-16
NL7607118A (nl) 1977-01-03
CA1039873A (fr) 1978-10-03
FR2316811A1 (fr) 1977-01-28
JPS526004A (en) 1977-01-18
AU1526276A (en) 1978-01-05
SE7607374L (sv) 1976-12-31

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Legal Events

Date Code Title Description
PL Patent ceased