GB380592A - Improvements in or relating to telegraph systems - Google Patents

Improvements in or relating to telegraph systems

Info

Publication number
GB380592A
GB380592A GB25764/31A GB2576431A GB380592A GB 380592 A GB380592 A GB 380592A GB 25764/31 A GB25764/31 A GB 25764/31A GB 2576431 A GB2576431 A GB 2576431A GB 380592 A GB380592 A GB 380592A
Authority
GB
United Kingdom
Prior art keywords
relay
subscriber
line
exchange
calling
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
GB25764/31A
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.)
Siemens and Halske AG
Siemens Corp
Original Assignee
Siemens and Halske AG
Siemens Corp
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 Siemens and Halske AG, Siemens Corp filed Critical Siemens and Halske AG
Publication of GB380592A publication Critical patent/GB380592A/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
    • H04L12/12—Arrangements for remote connection or disconnection of substations or of equipment thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Interface Circuits In Exchanges (AREA)
GB25764/31A 1930-09-17 1931-09-14 Improvements in or relating to telegraph systems Expired GB380592A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE546955T 1930-09-17

Publications (1)

Publication Number Publication Date
GB380592A true GB380592A (en) 1932-09-22

Family

ID=34427991

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25764/31A Expired GB380592A (en) 1930-09-17 1931-09-14 Improvements in or relating to telegraph systems

Country Status (4)

Country Link
DE (1) DE546955C (enrdf_load_stackoverflow)
FR (1) FR723156A (enrdf_load_stackoverflow)
GB (1) GB380592A (enrdf_load_stackoverflow)
NL (1) NL33149C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
NL33149C (enrdf_load_stackoverflow)
FR723156A (fr) 1932-04-04
DE546955C (de) 1932-03-17

Similar Documents

Publication Publication Date Title
US2245799A (en) Telephone system
GB380592A (en) Improvements in or relating to telegraph systems
US2055647A (en) Telephone line system
US2334876A (en) Printing telegraph system
US2227121A (en) Printing telegraph system
ES349621A1 (es) Dispositivo de puntos de cruce.
US2906998A (en) Signaling system
US1592646A (en) Automatic telephone system
US1895112A (en) Printing telegraph exchange system
US2541589A (en) Arrangement for disconnecting switching equipment from telephone lines
US1954131A (en) Telephone system
US2584857A (en) Alarm system for unattended automatic exchanges
US2154230A (en) Signaling system
US2027142A (en) Telephone exchange system
US2413001A (en) Communication system
US2033283A (en) Signaling system
US2625608A (en) Open telegraph line indicator
US2147720A (en) Telegraphic exchange circuit
US1532888A (en) Telephone system
US2697139A (en) Testing arrangement for telephone lines
US2185851A (en) Signaling system
US1866260A (en) Telephone system
US2249103A (en) Open telegraph alarm circuit
US2058601A (en) Teletypewriter system
GB281987A (en) Improvements relating to electrical remote control and signalling systems