JPS5389606A - Conference telephone system - Google Patents

Conference telephone system

Info

Publication number
JPS5389606A
JPS5389606A JP207478A JP207478A JPS5389606A JP S5389606 A JPS5389606 A JP S5389606A JP 207478 A JP207478 A JP 207478A JP 207478 A JP207478 A JP 207478A JP S5389606 A JPS5389606 A JP S5389606A
Authority
JP
Japan
Prior art keywords
telephone system
conference telephone
conference
telephone
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.)
Granted
Application number
JP207478A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6133314B2 (es
Inventor
Botorosu Radamisu
Damiin Rafuransu Konratsudo
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
Publication of JPS5389606A publication Critical patent/JPS5389606A/ja
Publication of JPS6133314B2 publication Critical patent/JPS6133314B2/ja
Granted 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)
JP207478A 1977-01-14 1978-01-13 Conference telephone system Granted JPS5389606A (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 (2)

Publication Number Publication Date
JPS5389606A true JPS5389606A (en) 1978-08-07
JPS6133314B2 JPS6133314B2 (es) 1986-08-01

Family

ID=4107730

Family Applications (1)

Application Number Title Priority Date Filing Date
JP207478A Granted JPS5389606A (en) 1977-01-14 1978-01-13 Conference telephone system

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
JPS6133314B2 (es) 1986-08-01
IT1089288B (it) 1985-06-18
SE7800213L (sv) 1978-07-15
BE862702A (fr) 1978-07-06
DE2800882A1 (de) 1978-07-20
SE416510B (sv) 1981-01-05
GB1587549A (en) 1981-04-08
FR2377735B3 (es) 1980-10-24
ES465952A1 (es) 1978-09-16
DK5678A (da) 1978-07-15
CA1050154A (en) 1979-03-06
FR2377735A1 (fr) 1978-08-11
DE2800882C2 (de) 1985-02-28
NO780126L (no) 1978-07-17
NL7714104A (nl) 1978-07-18

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