BE483450A - - Google Patents

Info

Publication number
BE483450A
BE483450A BE483450DA BE483450A BE 483450 A BE483450 A BE 483450A BE 483450D A BE483450D A BE 483450DA BE 483450 A BE483450 A BE 483450A
Authority
BE
Belgium
Application number
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.)
Publication of BE483450A publication Critical patent/BE483450A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • 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
    • H04M3/42221—Conversation recording systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Telephonic Communication Services (AREA)
BE483450D 1942-05-02 BE483450A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL309354X 1942-05-02

Publications (1)

Publication Number Publication Date
BE483450A true BE483450A (fr)

Family

ID=19783577

Family Applications (1)

Application Number Title Priority Date Filing Date
BE483450D BE483450A (fr) 1942-05-02

Country Status (5)

Country Link
BE (1) BE483450A (fr)
CH (1) CH309354A (fr)
DE (1) DE851825C (fr)
FR (1) FR958997A (fr)
NL (1) NL57012C (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE548354A (fr) * 1955-06-06

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2056277A (en) * 1935-07-24 1936-10-06 Telegraph repeating system
US2149386A (en) * 1936-04-02 1939-03-07 Teletype Corp Intercommunicating and broadcasting switchboard
BE428135A (fr) * 1937-05-21

Also Published As

Publication number Publication date
DE851825C (de) 1952-10-09
NL57012C (fr)
FR958997A (fr) 1950-03-22
CH309354A (fr) 1955-08-31

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