ZA774771B - Device for conveying a high-voltage low-frequency signal over a carrier connection - Google Patents

Device for conveying a high-voltage low-frequency signal over a carrier connection

Info

Publication number
ZA774771B
ZA774771B ZA00774771A ZA774771A ZA774771B ZA 774771 B ZA774771 B ZA 774771B ZA 00774771 A ZA00774771 A ZA 00774771A ZA 774771 A ZA774771 A ZA 774771A ZA 774771 B ZA774771 B ZA 774771B
Authority
ZA
South Africa
Prior art keywords
conveying
frequency signal
signal over
voltage low
carrier connection
Prior art date
Application number
ZA00774771A
Other languages
English (en)
Inventor
F Bronner
Original Assignee
Cit Alcatel
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 Cit Alcatel filed Critical Cit Alcatel
Publication of ZA774771B publication Critical patent/ZA774771B/xx

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
    • H04Q5/24—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange for two-party-line systems
    • H04Q5/245—Circuit arrangements in which for one subscriber low frequency speech and/or signalling signals proceed on the line, while for the other subscriber the low frequency speech and/or signalling signals are modulated upon a high frequency carrier signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Telephonic Communication Services (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
ZA00774771A 1976-12-29 1977-08-08 Device for conveying a high-voltage low-frequency signal over a carrier connection ZA774771B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7639412A FR2408956A1 (fr) 1976-12-29 1976-12-29 Dispositif pour l'emission d'un signal basse frequence de tension elevee par l'intermediaire d'une liaison a courants porteurs

Publications (1)

Publication Number Publication Date
ZA774771B true ZA774771B (en) 1978-06-28

Family

ID=9181669

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00774771A ZA774771B (en) 1976-12-29 1977-08-08 Device for conveying a high-voltage low-frequency signal over a carrier connection

Country Status (11)

Country Link
US (1) US4197433A (enExample)
BE (1) BE861736A (enExample)
CA (1) CA1076724A (enExample)
DE (1) DE2757437C2 (enExample)
FR (1) FR2408956A1 (enExample)
GB (1) GB1526619A (enExample)
IE (1) IE45880B1 (enExample)
IT (1) IT1088940B (enExample)
LU (1) LU78745A1 (enExample)
NL (1) NL7714452A (enExample)
ZA (1) ZA774771B (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4361731A (en) * 1981-02-13 1982-11-30 Bell Telephone Laboratories, Incorporated Coin telephone control circuit
ATE421841T1 (de) * 1999-11-19 2009-02-15 Alcatel Lucent Telefonsystem, zentrale vermittlungsstelle und trennvorrichtung für analoge telefonsignalen und digitale datensignalen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2837605A (en) * 1955-02-28 1958-06-03 Bell Telephone Labor Inc Subscriber-loop carrier telephone ringing systems
US3886321A (en) * 1973-11-05 1975-05-27 Seismograph Service Corp Ringing generator for telephone station terminal
US3927266A (en) * 1974-01-16 1975-12-16 Gte Automatic Electric Lab Inc Ringer power generator circuit for subscriber carrier station terminal

Also Published As

Publication number Publication date
IE45880L (en) 1978-06-29
IT1088940B (it) 1985-06-10
FR2408956B1 (enExample) 1980-04-25
CA1076724A (fr) 1980-04-29
LU78745A1 (enExample) 1978-07-14
NL7714452A (nl) 1978-07-03
GB1526619A (en) 1978-09-27
FR2408956A1 (fr) 1979-06-08
IE45880B1 (en) 1982-12-15
DE2757437C2 (de) 1986-12-11
BE861736A (fr) 1978-06-12
US4197433A (en) 1980-04-08
DE2757437A1 (de) 1978-07-06

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