GB343009A - Improvements in or relating to exchange systems for interconnecting telegraph apparatus - Google Patents

Improvements in or relating to exchange systems for interconnecting telegraph apparatus

Info

Publication number
GB343009A
GB343009A GB3385529A GB3385529A GB343009A GB 343009 A GB343009 A GB 343009A GB 3385529 A GB3385529 A GB 3385529A GB 3385529 A GB3385529 A GB 3385529A GB 343009 A GB343009 A GB 343009A
Authority
GB
United Kingdom
Prior art keywords
relay
contact
contacts
jack
subscriber
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
GB3385529A
Other languages
English (en)
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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
Priority to BE374583D priority Critical patent/BE374583A/xx
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB3385529A priority patent/GB343009A/en
Priority to FR705747D priority patent/FR705747A/fr
Publication of GB343009A publication Critical patent/GB343009A/en
Expired legal-status Critical Current

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
    • H04L12/04—Switchboards

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
GB3385529A 1929-11-06 1929-11-06 Improvements in or relating to exchange systems for interconnecting telegraph apparatus Expired GB343009A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE374583D BE374583A (fr) 1929-11-06
GB3385529A GB343009A (en) 1929-11-06 1929-11-06 Improvements in or relating to exchange systems for interconnecting telegraph apparatus
FR705747D FR705747A (fr) 1929-11-06 1930-10-29 Arrangements de circuits pour bureaux centraux permettant l'interconnexion d'appareils télégraphiques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3385529A GB343009A (en) 1929-11-06 1929-11-06 Improvements in or relating to exchange systems for interconnecting telegraph apparatus

Publications (1)

Publication Number Publication Date
GB343009A true GB343009A (en) 1931-02-06

Family

ID=10358317

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3385529A Expired GB343009A (en) 1929-11-06 1929-11-06 Improvements in or relating to exchange systems for interconnecting telegraph apparatus

Country Status (3)

Country Link
BE (1) BE374583A (fr)
FR (1) FR705747A (fr)
GB (1) GB343009A (fr)

Also Published As

Publication number Publication date
FR705747A (fr) 1931-06-11
BE374583A (fr)

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