CA1050154A - Telephone conferencing apparatus - Google Patents

Telephone conferencing apparatus

Info

Publication number
CA1050154A
CA1050154A CA269,735A CA269735A CA1050154A CA 1050154 A CA1050154 A CA 1050154A CA 269735 A CA269735 A CA 269735A CA 1050154 A CA1050154 A CA 1050154A
Authority
CA
Canada
Prior art keywords
microphone
housing
speaker
telephone
base member
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.)
Expired
Application number
CA269,735A
Other languages
English (en)
French (fr)
Inventor
Conrad D. Lafrance
Radamis Botros
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.)
Nortel Networks Ltd
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
Priority to CA269,735A priority Critical patent/CA1050154A/en
Priority to GB52043/77A priority patent/GB1587549A/en
Priority to NL7714104A priority patent/NL7714104A/xx
Priority to IT31487/77A priority patent/IT1089288B/it
Priority to FR7800105A priority patent/FR2377735A1/fr
Priority to DK5678A priority patent/DK5678A/da
Priority to BE184153A priority patent/BE862702A/xx
Priority to SE7800213A priority patent/SE416510B/sv
Priority to DE2800882A priority patent/DE2800882C2/de
Priority to NO780126A priority patent/NO780126L/no
Priority to ES465952A priority patent/ES465952A1/es
Priority to JP207478A priority patent/JPS5389606A/ja
Application granted granted Critical
Publication of CA1050154A publication Critical patent/CA1050154A/en
Expired legal-status Critical Current

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)
CA269,735A 1977-01-14 1977-01-14 Telephone conferencing apparatus Expired CA1050154A (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
CA269,735A CA1050154A (en) 1977-01-14 1977-01-14 Telephone conferencing apparatus
GB52043/77A GB1587549A (en) 1977-01-14 1977-12-14 Telephone conferencing apparatus
NL7714104A NL7714104A (nl) 1977-01-14 1977-12-20 Telefoonconferentietoestel.
IT31487/77A IT1089288B (it) 1977-01-14 1977-12-30 Apparato telefonico per conferenze
FR7800105A FR2377735A1 (fr) 1977-01-14 1978-01-04 Appareil telephonique pour salle de conferences
DK5678A DK5678A (da) 1977-01-14 1978-01-05 Konferencefelefonapparat
BE184153A BE862702A (fr) 1977-01-14 1978-01-06 Appareil telephonique pour salle de conferences
SE7800213A SE416510B (sv) 1977-01-14 1978-01-09 Telefonapparat for anvendning i ett konferensrum
DE2800882A DE2800882C2 (de) 1977-01-14 1978-01-10 Konferenz-Telefonapparat
NO780126A NO780126L (no) 1977-01-14 1978-01-12 Telefonkonferanseapparat.
ES465952A ES465952A1 (es) 1977-01-14 1978-01-13 Perfeccionamientos en aparatos telefonicos para salas de conferencias.
JP207478A JPS5389606A (en) 1977-01-14 1978-01-13 Conference telephone system

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
CA1050154A true CA1050154A (en) 1979-03-06

Family

ID=4107730

Family Applications (1)

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

Country Status (12)

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

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
BE862702A (fr) 1978-07-06
JPS6133314B2 (es) 1986-08-01
GB1587549A (en) 1981-04-08
DK5678A (da) 1978-07-15
SE7800213L (sv) 1978-07-15
NL7714104A (nl) 1978-07-18
ES465952A1 (es) 1978-09-16
FR2377735A1 (fr) 1978-08-11
FR2377735B3 (es) 1980-10-24
JPS5389606A (en) 1978-08-07
DE2800882A1 (de) 1978-07-20
NO780126L (no) 1978-07-17
SE416510B (sv) 1981-01-05
DE2800882C2 (de) 1985-02-28
IT1089288B (it) 1985-06-18

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