FR600084A - Improvements to call devices for electrical carrier wave signaling installations - Google Patents

Improvements to call devices for electrical carrier wave signaling installations

Info

Publication number
FR600084A
FR600084A FR600084DA FR600084A FR 600084 A FR600084 A FR 600084A FR 600084D A FR600084D A FR 600084DA FR 600084 A FR600084 A FR 600084A
Authority
FR
France
Prior art keywords
carrier wave
electrical carrier
call devices
wave signaling
signaling installations
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR600084A publication Critical patent/FR600084A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/14—Arrangements providing for calling or supervisory signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Mobile Radio Communication Systems (AREA)
FR600084D 1925-05-20 1925-06-25 Improvements to call devices for electrical carrier wave signaling installations Expired FR600084A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1314825A GB253697A (en) 1925-05-20 1925-05-20 Improvements in signalling (ringing) arrangements for carrier wave systems

Publications (1)

Publication Number Publication Date
FR600084A true FR600084A (en) 1926-01-29

Family

ID=10017733

Family Applications (1)

Application Number Title Priority Date Filing Date
FR600084D Expired FR600084A (en) 1925-05-20 1925-06-25 Improvements to call devices for electrical carrier wave signaling installations

Country Status (3)

Country Link
DE (1) DE593115C (en)
FR (1) FR600084A (en)
GB (1) GB253697A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE756915C (en) * 1938-08-05 1952-05-05 Lorenz A G C Arrangement for call transmission in carrier frequency systems
DE865327C (en) * 1938-08-05 1953-02-02 Lorenz C Ag Arrangement for call transmission in carrier frequency systems

Also Published As

Publication number Publication date
GB253697A (en) 1926-06-24
DE593115C (en) 1934-02-22

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