NO931268L - PROCEDURE FOR DATA TRANSFER ON TELEPHONE LINES - Google Patents

PROCEDURE FOR DATA TRANSFER ON TELEPHONE LINES

Info

Publication number
NO931268L
NO931268L NO93931268A NO931268A NO931268L NO 931268 L NO931268 L NO 931268L NO 93931268 A NO93931268 A NO 93931268A NO 931268 A NO931268 A NO 931268A NO 931268 L NO931268 L NO 931268L
Authority
NO
Norway
Prior art keywords
telephone lines
procedure
data transfer
carrier frequency
ltg
Prior art date
Application number
NO93931268A
Other languages
Norwegian (no)
Other versions
NO931268D0 (en
Inventor
Rolf Baumeister
Original Assignee
Deutsche Telephonwerk Kabel
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 Deutsche Telephonwerk Kabel filed Critical Deutsche Telephonwerk Kabel
Publication of NO931268D0 publication Critical patent/NO931268D0/en
Publication of NO931268L publication Critical patent/NO931268L/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

En fremgangsmåte til dataoverføring på telefonlinjer parallelt med taleoverføringen og med en bærefrekvens som ligger over frekvensen for talebåndet benytter bare en eneste generator (G) til generering av bærefrekvensen som jevnlig forekommer på telefonlinjene (LTG). Dataoverføringen selv styres ved refleksjon av bærefrekvensen på variable avslutningsimpedanser (ZA, ZB) i telefonlinjene (LTG).A method of data transmission on telephone lines parallel to the voice transmission and with a carrier frequency exceeding the frequency of the voice band uses only a single generator (G) to generate the carrier frequency that occurs regularly on the telephone lines (LTG). The data transmission itself is controlled by reflection of the carrier frequency of variable termination impedances (ZA, ZB) in the telephone lines (LTG).

NO93931268A 1992-04-04 1993-04-01 PROCEDURE FOR DATA TRANSFER ON TELEPHONE LINES NO931268L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4211820A DE4211820C1 (en) 1992-04-04 1992-04-04 Methods of data transmission on telephone lines

Publications (2)

Publication Number Publication Date
NO931268D0 NO931268D0 (en) 1993-04-01
NO931268L true NO931268L (en) 1993-10-05

Family

ID=6456401

Family Applications (1)

Application Number Title Priority Date Filing Date
NO93931268A NO931268L (en) 1992-04-04 1993-04-01 PROCEDURE FOR DATA TRANSFER ON TELEPHONE LINES

Country Status (10)

Country Link
EP (1) EP0564702A3 (en)
CZ (1) CZ368992A3 (en)
DE (1) DE4211820C1 (en)
FI (1) FI931477A (en)
HR (1) HRP930616A2 (en)
HU (1) HUT64167A (en)
NO (1) NO931268L (en)
PL (1) PL298339A1 (en)
SI (1) SI9300165A (en)
SK (1) SK368992A3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29605537U1 (en) * 1996-03-14 1997-07-10 Elmeg Gmbh Kommunikationstechnik, 31228 Peine Telecommunication system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2047630A1 (en) * 1970-09-28 1972-03-30 Siemens Ag Arrangement for providing an additional data channel on subscriber lines
WO1981002962A1 (en) * 1980-04-10 1981-10-15 F Yong Electrical supervisory control and data acquisition system
DE3427139C2 (en) * 1983-07-28 1986-04-24 Neumann Elektronik GmbH, 4330 Mülheim Device for the transmission of data over a telephone line
GB2146509B (en) * 1983-09-10 1986-08-13 Stc Plc Data transmission system
DE3531078C2 (en) * 1985-08-30 1993-10-28 Siemens Ag Data transmission outside the voice band on two-wire lines
DE3534868A1 (en) * 1985-09-30 1987-04-02 Siemens Ag Method for signal and data transmission for featurephone stations connected via a two-wire transmission channel
DE3631477C3 (en) * 1986-09-16 1995-01-26 Siegfried Dipl Ing Schwarz Network for control, measurement and regulation technology for data and energy transmission
FR2646303B1 (en) * 1989-04-25 1994-03-18 Alcatel Cit COMMUNICATION ADAPTER FOR TELEACTION TERMINAL

Also Published As

Publication number Publication date
CZ368992A3 (en) 1993-11-17
SI9300165A (en) 1993-12-31
EP0564702A3 (en) 1995-06-21
FI931477A0 (en) 1993-04-01
HUT64167A (en) 1993-11-29
HU9300794D0 (en) 1993-06-28
DE4211820C1 (en) 1993-11-18
FI931477A (en) 1993-10-05
NO931268D0 (en) 1993-04-01
PL298339A1 (en) 1993-10-18
HRP930616A2 (en) 1994-10-31
EP0564702A2 (en) 1993-10-13
SK368992A3 (en) 1995-03-08

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