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FR543176A - Call selector - Google Patents

Call selector

Info

Publication number
FR543176A
FR543176A FR543176DA FR543176A FR 543176 A FR543176 A FR 543176A FR 543176D A FR543176D A FR 543176DA FR 543176 A FR543176 A FR 543176A
Authority
FR
France
Prior art keywords
call selector
selector
call
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.)
Societe Francaise Radio Electrique
Original Assignee
Societe Francaise Radio Electrique
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 Societe Francaise Radio Electrique filed Critical Societe Francaise Radio Electrique
Application granted granted Critical
Publication of FR543176A publication Critical patent/FR543176A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L15/00—Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code
    • H04L15/24—Apparatus or circuits at the receiving end
    • H04L15/26—Apparatus or circuits at the receiving end operating only on reception of predetermined code signals, e.g. distress signals, party-line call signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
FR543176D 1921-03-22 1921-03-22 Call selector Expired FR543176A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR412575X 1921-03-22

Publications (1)

Publication Number Publication Date
FR543176A true FR543176A (en) 1922-08-29

Family

ID=8897793

Family Applications (1)

Application Number Title Priority Date Filing Date
FR543176D Expired FR543176A (en) 1921-03-22 1921-03-22 Call selector

Country Status (4)

Country Link
US (1) US1665622A (en)
DE (1) DE412575C (en)
FR (1) FR543176A (en)
GB (1) GB177488A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2462875A (en) * 1944-08-15 1949-03-01 Standard Telephones Cables Ltd Automatic alarm signaling system
BE460890A (en) * 1944-12-11
US2487178A (en) * 1947-06-04 1949-11-08 Martha W C Potts Divided channel telegraph system
US2598356A (en) * 1949-11-19 1952-05-27 Mcgraw Electric Co Remote switch control
US2669706A (en) * 1950-05-09 1954-02-16 Bell Telephone Labor Inc Code selector
DE1019375B (en) * 1953-06-22 1957-11-14 Landis & Gyr Ag Receiving device with synchronous dialers for a central remote control system working according to the pulse method with audio frequency overlay on power networks
US2812509A (en) * 1953-08-31 1957-11-05 Sperry Rand Corp Private line system

Also Published As

Publication number Publication date
GB177488A (en) 1923-04-03
DE412575C (en) 1925-04-24
US1665622A (en) 1928-04-10

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