GB8810882D0 - Hands-free telephone arrangement - Google Patents

Hands-free telephone arrangement

Info

Publication number
GB8810882D0
GB8810882D0 GB888810882A GB8810882A GB8810882D0 GB 8810882 D0 GB8810882 D0 GB 8810882D0 GB 888810882 A GB888810882 A GB 888810882A GB 8810882 A GB8810882 A GB 8810882A GB 8810882 D0 GB8810882 D0 GB 8810882D0
Authority
GB
United Kingdom
Prior art keywords
hands
free telephone
telephone arrangement
arrangement
free
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.)
Withdrawn
Application number
GB888810882A
Other versions
GB2218302A (en
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.)
Crystalate Electronics Ltd
Original Assignee
Crystalate Electronics Ltd
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 Crystalate Electronics Ltd filed Critical Crystalate Electronics Ltd
Priority to GB8810882A priority Critical patent/GB2218302A/en
Publication of GB8810882D0 publication Critical patent/GB8810882D0/en
Publication of GB2218302A publication Critical patent/GB2218302A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Telephone Function (AREA)
GB8810882A 1988-05-07 1988-05-07 Hands-free telephone Withdrawn GB2218302A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8810882A GB2218302A (en) 1988-05-07 1988-05-07 Hands-free telephone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8810882A GB2218302A (en) 1988-05-07 1988-05-07 Hands-free telephone

Publications (2)

Publication Number Publication Date
GB8810882D0 true GB8810882D0 (en) 1988-06-08
GB2218302A GB2218302A (en) 1989-11-08

Family

ID=10636553

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8810882A Withdrawn GB2218302A (en) 1988-05-07 1988-05-07 Hands-free telephone

Country Status (1)

Country Link
GB (1) GB2218302A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2770352B1 (en) * 1997-10-27 1999-11-19 Sagem DEVICE FOR IMPLEMENTING HANDS-FREE MODE OF A TELEPHONE SET

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1132378A (en) * 1966-07-02 1968-10-30 Malcolm Neville Shute Improvements in or relating to telephone equipment
DE2605086B2 (en) * 1976-02-10 1979-10-04 Elmeg Elektro-Mechanik Gmbh, 3150 Peine Hands-free facility for emergency telephones

Also Published As

Publication number Publication date
GB2218302A (en) 1989-11-08

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)