IT1089288B - Apparato telefonico per conferenze - Google Patents

Apparato telefonico per conferenze

Info

Publication number
IT1089288B
IT1089288B IT31487/77A IT3148777A IT1089288B IT 1089288 B IT1089288 B IT 1089288B IT 31487/77 A IT31487/77 A IT 31487/77A IT 3148777 A IT3148777 A IT 3148777A IT 1089288 B IT1089288 B IT 1089288B
Authority
IT
Italy
Prior art keywords
conferences
telephone apparatus
telephone
Prior art date
Application number
IT31487/77A
Other languages
English (en)
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
Application granted granted Critical
Publication of IT1089288B publication Critical patent/IT1089288B/it

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)
IT31487/77A 1977-01-14 1977-12-30 Apparato telefonico per conferenze IT1089288B (it)

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
IT1089288B true IT1089288B (it) 1985-06-18

Family

ID=4107730

Family Applications (1)

Application Number Title Priority Date Filing Date
IT31487/77A IT1089288B (it) 1977-01-14 1977-12-30 Apparato telefonico per conferenze

Country Status (12)

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

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61242499A (ja) * 1985-04-19 1986-10-28 シユア・ブラザ−ズ・インコ−ポレイテツド マイクロホン装置
FR2617660B1 (fr) * 1987-06-30 1990-06-08 Larvor Rene Dispositif de prise et de restitution du son, notamment pour audio-conferences
DE3734447C1 (de) * 1987-10-12 1989-05-18 Telefonbau & Normalzeit Gmbh Konferenz-Freisprecheinrichtung
FR2670351B1 (fr) * 1990-12-05 1997-04-30 France Etat Appareil de prise et de restitution du son.
FR2702918B1 (fr) * 1993-03-19 1995-05-12 Prescom Sarl Appareil de prise et de restitution de son, et son application à l'audio-conférence.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH400245A (de) * 1965-10-02 1965-10-15 Peiker Heinrich Einrichtung zum Gegensprechen

Also Published As

Publication number Publication date
FR2377735B3 (it) 1980-10-24
DE2800882C2 (de) 1985-02-28
DE2800882A1 (de) 1978-07-20
CA1050154A (en) 1979-03-06
SE7800213L (sv) 1978-07-15
NL7714104A (nl) 1978-07-18
NO780126L (no) 1978-07-17
BE862702A (fr) 1978-07-06
JPS5389606A (en) 1978-08-07
JPS6133314B2 (it) 1986-08-01
GB1587549A (en) 1981-04-08
DK5678A (da) 1978-07-15
SE416510B (sv) 1981-01-05
ES465952A1 (es) 1978-09-16
FR2377735A1 (fr) 1978-08-11

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