DK5678A - CONFERENCE PHONE DEVICE - Google Patents

CONFERENCE PHONE DEVICE

Info

Publication number
DK5678A
DK5678A DK5678A DK5678A DK5678A DK 5678 A DK5678 A DK 5678A DK 5678 A DK5678 A DK 5678A DK 5678 A DK5678 A DK 5678A DK 5678 A DK5678 A DK 5678A
Authority
DK
Denmark
Prior art keywords
phone device
conference phone
conference
phone
Prior art date
Application number
DK5678A
Other languages
Danish (da)
Inventor
R Botros
C D Lafrance
Original Assignee
Northern Telecom 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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Publication of DK5678A publication Critical patent/DK5678A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Telephone Set Structure (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Catalysts (AREA)
DK5678A 1977-01-14 1978-01-05 CONFERENCE PHONE DEVICE DK5678A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA269,735A CA1050154A (en) 1977-01-14 1977-01-14 Telephone conferencing apparatus

Publications (1)

Publication Number Publication Date
DK5678A true DK5678A (en) 1978-07-15

Family

ID=4107730

Family Applications (1)

Application Number Title Priority Date Filing Date
DK5678A DK5678A (en) 1977-01-14 1978-01-05 CONFERENCE PHONE DEVICE

Country Status (12)

Country Link
JP (1) JPS5389606A (en)
BE (1) BE862702A (en)
CA (1) CA1050154A (en)
DE (1) DE2800882C2 (en)
DK (1) DK5678A (en)
ES (1) ES465952A1 (en)
FR (1) FR2377735A1 (en)
GB (1) GB1587549A (en)
IT (1) IT1089288B (en)
NL (1) NL7714104A (en)
NO (1) NO780126L (en)
SE (1) SE416510B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61242499A (en) * 1985-04-19 1986-10-28 シユア・ブラザ−ズ・インコ−ポレイテツド Microphone apparatus
FR2617660B1 (en) * 1987-06-30 1990-06-08 Larvor Rene SOUND RECORDING AND RESTITUTION DEVICE, PARTICULARLY FOR AUDIO-CONFERENCES
DE3734447C1 (en) * 1987-10-12 1989-05-18 Telefonbau & Normalzeit Gmbh Conference speakerphone
FR2670351B1 (en) * 1990-12-05 1997-04-30 France Etat SOUND RECORDING AND RESTITUTING APPARATUS.
FR2702918B1 (en) * 1993-03-19 1995-05-12 Prescom Sarl Sound recording and reproducing apparatus, and its application to audio conference.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH400245A (en) * 1965-10-02 1965-10-15 Peiker Heinrich Facility for two-way communication

Also Published As

Publication number Publication date
JPS5389606A (en) 1978-08-07
NO780126L (en) 1978-07-17
FR2377735B3 (en) 1980-10-24
SE7800213L (en) 1978-07-15
DE2800882A1 (en) 1978-07-20
BE862702A (en) 1978-07-06
GB1587549A (en) 1981-04-08
CA1050154A (en) 1979-03-06
IT1089288B (en) 1985-06-18
JPS6133314B2 (en) 1986-08-01
NL7714104A (en) 1978-07-18
ES465952A1 (en) 1978-09-16
SE416510B (en) 1981-01-05
DE2800882C2 (en) 1985-02-28
FR2377735A1 (en) 1978-08-11

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