AU4346785A - Telephone instruments - Google Patents

Telephone instruments

Info

Publication number
AU4346785A
AU4346785A AU43467/85A AU4346785A AU4346785A AU 4346785 A AU4346785 A AU 4346785A AU 43467/85 A AU43467/85 A AU 43467/85A AU 4346785 A AU4346785 A AU 4346785A AU 4346785 A AU4346785 A AU 4346785A
Authority
AU
Australia
Prior art keywords
telephone instruments
instruments
telephone
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
AU43467/85A
Inventor
Kenneth Alexander Manson Arton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of AU4346785A publication Critical patent/AU4346785A/en
Abandoned legal-status Critical Current

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
    • H04M9/085—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using digital techniques
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Analogue/Digital Conversion (AREA)
  • Interface Circuits In Exchanges (AREA)
AU43467/85A 1984-06-28 1985-06-11 Telephone instruments Abandoned AU4346785A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8416415 1984-06-28
GB08416415A GB2161047B (en) 1984-06-28 1984-06-28 Improvements in telephone instruments

Publications (1)

Publication Number Publication Date
AU4346785A true AU4346785A (en) 1986-01-02

Family

ID=10563086

Family Applications (1)

Application Number Title Priority Date Filing Date
AU43467/85A Abandoned AU4346785A (en) 1984-06-28 1985-06-11 Telephone instruments

Country Status (7)

Country Link
JP (1) JPS6115451A (en)
AU (1) AU4346785A (en)
DE (1) DE3522915A1 (en)
ES (1) ES8609854A1 (en)
FR (1) FR2566980A1 (en)
GB (1) GB2161047B (en)
IT (1) IT1206478B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU604544B2 (en) * 1987-05-15 1990-12-20 Alcatel N.V. A volume control circuit

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4724540A (en) * 1986-09-02 1988-02-09 Motorola, Inc. Speakerphone with fast idle mode
GB2197166A (en) * 1986-11-07 1988-05-11 Storno As Controlling gain in speech-controlled telephones
CA1291837C (en) * 1987-07-15 1991-11-05 Juro Ohga Electronic telephone terminal having noise suppression function
US4879745A (en) * 1988-10-12 1989-11-07 Ibm Corporation Half-duplex speakerphone
US4901346A (en) * 1988-12-28 1990-02-13 American Telephone And Telegraph Co. Computer controlled speakerphone for adapting to a communication line
US4959857A (en) * 1988-12-28 1990-09-25 At&T Bell Laboratories Acoustic calibration arrangement for a voice switched speakerphone
US5007046A (en) * 1988-12-28 1991-04-09 At&T Bell Laboratories Computer controlled adaptive speakerphone
US4887288A (en) * 1988-12-28 1989-12-12 American Telephone And Telegraph Company Self calibration arrangement for a voice switched speakerphone
KR920017511A (en) * 1991-02-28 1992-09-26 빈센트 죠셉 로너 Integrated speakerphone circuit and serial port interface for speakerphone
DE4130045A1 (en) * 1991-09-10 1993-03-18 Standard Elektrik Lorenz Ag CIRCUIT ARRANGEMENT FOR THE DYNAMIC CONTROL OF A VOICE TERMINAL
CA2052351C (en) * 1991-09-27 2000-05-23 Gordon J. Reesor Telephone handsfree algorithm
DE4416550C1 (en) * 1994-05-10 1995-09-21 Siemens Ag Loudspeaking telephone terminal circuit with earpiece loudness control
US6978009B1 (en) 1996-08-20 2005-12-20 Legerity, Inc. Microprocessor-controlled full-duplex speakerphone using automatic gain control
JPH10304030A (en) 1997-04-28 1998-11-13 Saitama Nippon Denki Kk Portable telephone system
FR3028375B1 (en) * 2014-11-07 2017-11-24 Euro Prot Surveillance VOICE COMMUNICATION METHOD, AUDIO INTERFACE OF A SOCIAL ALARM SYSTEM, AND SOCIAL ALARM SYSTEM

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA996692A (en) * 1974-12-12 1976-09-07 Russell W. Brown Digital control of a loudspeaking telephone system
DE2651688A1 (en) * 1976-11-12 1978-05-24 Siemens Ag Full-duplex voice-controlled communications system - has voice direction recognition corrected according to noise level using digital circuit
JPS5797262A (en) * 1980-12-09 1982-06-16 Nippon Telegr & Teleph Corp <Ntt> Loud speaker telephone set system
GB2122851B (en) * 1982-06-10 1986-03-19 Standard Telephones Cables Ltd Loudspeaking telephones

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU604544B2 (en) * 1987-05-15 1990-12-20 Alcatel N.V. A volume control circuit

Also Published As

Publication number Publication date
FR2566980A1 (en) 1986-01-03
ES544628A0 (en) 1986-07-16
IT8521356A0 (en) 1985-06-28
JPS6115451A (en) 1986-01-23
GB2161047A (en) 1986-01-02
GB8416415D0 (en) 1984-08-01
GB2161047B (en) 1987-09-16
IT1206478B (en) 1989-04-27
DE3522915A1 (en) 1986-01-09
ES8609854A1 (en) 1986-07-16

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