FR856228A - Connection device for automatic teletype transmission systems - Google Patents

Connection device for automatic teletype transmission systems

Info

Publication number
FR856228A
FR856228A FR856228DA FR856228A FR 856228 A FR856228 A FR 856228A FR 856228D A FR856228D A FR 856228DA FR 856228 A FR856228 A FR 856228A
Authority
FR
France
Prior art keywords
automatic
connection device
transmission systems
teletype
teletype transmission
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
Other languages
French (fr)
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.)
Fides BV
Original Assignee
Fides BV
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 Fides BV filed Critical Fides BV
Application granted granted Critical
Publication of FR856228A publication Critical patent/FR856228A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
    • H04L63/105—Multiple levels of security
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/22—Arrangements for preventing the taking of data from a data transmission channel without authorisation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
FR856228D 1935-08-17 1939-06-15 Connection device for automatic teletype transmission systems Expired FR856228A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEN38498D DE683898C (en) 1935-08-17 1935-08-17 Circuit arrangement for self-connection telex switching systems

Publications (1)

Publication Number Publication Date
FR856228A true FR856228A (en) 1940-06-07

Family

ID=7347815

Family Applications (1)

Application Number Title Priority Date Filing Date
FR856228D Expired FR856228A (en) 1935-08-17 1939-06-15 Connection device for automatic teletype transmission systems

Country Status (3)

Country Link
CH (1) CH215249A (en)
DE (1) DE683898C (en)
FR (1) FR856228A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE866201C (en) * 1940-08-24 1953-02-09 Mix & Genest Ag Circuit arrangement for telephone systems with dialer operation, in which incoming high-quality connections run over connection devices also provided for low-value connections and are only established with authorized subscriber stations
DE838318C (en) * 1948-10-14 1952-05-08 Lorenz C Ag Circuit arrangement for teletype networks with long-distance lines and dialers, in which both normal and privileged connections are established over the same routes
DE1027710B (en) * 1956-03-20 1958-04-10 Siemens Ag Circuit arrangement for determining the traffic authorization of calling subscribers in switching systems

Also Published As

Publication number Publication date
DE683898C (en) 1939-11-18
CH215249A (en) 1941-06-15

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