NL7714104A - TELEPHONE CONFERENCE DEVICE. - Google Patents

TELEPHONE CONFERENCE DEVICE.

Info

Publication number
NL7714104A
NL7714104A NL7714104A NL7714104A NL7714104A NL 7714104 A NL7714104 A NL 7714104A NL 7714104 A NL7714104 A NL 7714104A NL 7714104 A NL7714104 A NL 7714104A NL 7714104 A NL7714104 A NL 7714104A
Authority
NL
Netherlands
Prior art keywords
conference device
telephone conference
telephone
conference
Prior art date
Application number
NL7714104A
Other languages
Dutch (nl)
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 NL7714104A publication Critical patent/NL7714104A/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)
NL7714104A 1977-01-14 1977-12-20 TELEPHONE CONFERENCE DEVICE. NL7714104A (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
NL7714104A true NL7714104A (en) 1978-07-18

Family

ID=4107730

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7714104A NL7714104A (en) 1977-01-14 1977-12-20 TELEPHONE CONFERENCE 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
GB1587549A (en) 1981-04-08
NO780126L (en) 1978-07-17
ES465952A1 (en) 1978-09-16
FR2377735B3 (en) 1980-10-24
FR2377735A1 (en) 1978-08-11
DK5678A (en) 1978-07-15
CA1050154A (en) 1979-03-06
DE2800882C2 (en) 1985-02-28
BE862702A (en) 1978-07-06
JPS6133314B2 (en) 1986-08-01
SE7800213L (en) 1978-07-15
SE416510B (en) 1981-01-05
JPS5389606A (en) 1978-08-07
IT1089288B (en) 1985-06-18
DE2800882A1 (en) 1978-07-20

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Legal Events

Date Code Title Description
BV The patent application has lapsed