GB496926A - Circuit arrangements for telegraph systems - Google Patents

Circuit arrangements for telegraph systems

Info

Publication number
GB496926A
GB496926A GB14537/38A GB1453738A GB496926A GB 496926 A GB496926 A GB 496926A GB 14537/38 A GB14537/38 A GB 14537/38A GB 1453738 A GB1453738 A GB 1453738A GB 496926 A GB496926 A GB 496926A
Authority
GB
United Kingdom
Prior art keywords
subscriber
contact
time
dial
circuit arrangements
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
GB14537/38A
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.)
Alcatel Lucent Deutschland AG
C Lorenz AG
Original Assignee
Standard Elektrik Lorenz AG
C Lorenz AG
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 Standard Elektrik Lorenz AG, C Lorenz AG filed Critical Standard Elektrik Lorenz AG
Publication of GB496926A publication Critical patent/GB496926A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

496,926. Telegraph exchange systems. LORENZ AKT.-GES., C. May 16, 1938, No. 14537. Convention date, May 15, 1937. [Class 40 (iii)] A switch AB at a subscriber's station releases a selecting dial a certain time after the subscriber has pressed a calling key AT. The interval of time is at least equal to the maximum time of transit of the pre-selector at the automatic exchange. The retarded relays A, B operate in sequence from current in the subscriber's line a, b, by the reversing of contacts a<2>, a3. The contact b3 de-energizes the relay A. Closure of the contact b<2> applies voltage from the mains Ne to energize. a magnet W to release the dial and simultaneously connects up a busy lamp BL.
GB14537/38A 1937-05-15 1938-05-16 Circuit arrangements for telegraph systems Expired GB496926A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE205031X 1937-05-15

Publications (1)

Publication Number Publication Date
GB496926A true GB496926A (en) 1938-12-08

Family

ID=5785026

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14537/38A Expired GB496926A (en) 1937-05-15 1938-05-16 Circuit arrangements for telegraph systems

Country Status (4)

Country Link
CH (1) CH205031A (en)
FR (1) FR837793A (en)
GB (1) GB496926A (en)
NL (1) NL48869C (en)

Also Published As

Publication number Publication date
NL48869C (en)
CH205031A (en) 1939-05-31
FR837793A (en) 1939-02-20

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