BE603609A - Meespreek-en hoorinrichting voor vierdraadstelefoonverbindingen - Google Patents

Meespreek-en hoorinrichting voor vierdraadstelefoonverbindingen

Info

Publication number
BE603609A
BE603609A BE603609A BE603609A BE603609A BE 603609 A BE603609 A BE 603609A BE 603609 A BE603609 A BE 603609A BE 603609 A BE603609 A BE 603609A BE 603609 A BE603609 A BE 603609A
Authority
BE
Belgium
Prior art keywords
talk
hearing device
wire telephone
telephone connections
connections
Prior art date
Application number
BE603609A
Other languages
English (en)
Dutch (nl)
Inventor
Cornelis De Jong
Original Assignee
Nederlanden Staat
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 Nederlanden Staat filed Critical Nederlanden Staat
Publication of BE603609A publication Critical patent/BE603609A/nl

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/568—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities audio processing specific to telephonic conferencing, e.g. spatial distribution, mixing of participants

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)
BE603609A 1960-05-16 1961-05-10 Meespreek-en hoorinrichting voor vierdraadstelefoonverbindingen BE603609A (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL251680 1960-05-16

Publications (1)

Publication Number Publication Date
BE603609A true BE603609A (nl) 1961-09-01

Family

ID=19752351

Family Applications (1)

Application Number Title Priority Date Filing Date
BE603609A BE603609A (nl) 1960-05-16 1961-05-10 Meespreek-en hoorinrichting voor vierdraadstelefoonverbindingen

Country Status (4)

Country Link
BE (1) BE603609A (pm)
CH (1) CH424876A (pm)
DE (1) DE1190050B (pm)
NL (2) NL251680A (pm)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE825854C (de) * 1949-08-26 1951-12-20 Mix & Genest A G Sprechschaltung fuer vierdraehtige Durchschaltung

Also Published As

Publication number Publication date
CH424876A (de) 1966-11-30
NL251680A (pm)
NL127682C (pm)
DE1190050B (de) 1965-04-01

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