ES2037147T3 - Instalacion de prueba para compensadores digitales de ecos. - Google Patents

Instalacion de prueba para compensadores digitales de ecos.

Info

Publication number
ES2037147T3
ES2037147T3 ES198888111242T ES88111242T ES2037147T3 ES 2037147 T3 ES2037147 T3 ES 2037147T3 ES 198888111242 T ES198888111242 T ES 198888111242T ES 88111242 T ES88111242 T ES 88111242T ES 2037147 T3 ES2037147 T3 ES 2037147T3
Authority
ES
Spain
Prior art keywords
amplitude
values
ecos
transmission path
test
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 - Lifetime
Application number
ES198888111242T
Other languages
English (en)
Inventor
Frank Dipl.-Ing. Kuhn
Dirsko Von Pfeil
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 AG
Original Assignee
Siemens AG
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 AG filed Critical Siemens AG
Application granted granted Critical
Publication of ES2037147T3 publication Critical patent/ES2037147T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/46—Monitoring; Testing
    • H04B3/493—Testing echo effects or singing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
    • H04B3/238—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers using initial training sequence

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Tests Of Electronic Circuits (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

LA INSTALACION DE REVISION (14) CONTIENE UN GENERADOR - AMPLIDINA (17), QUE PRODUCE 7 - BIT - VALOR DE LA AMPLITUD PARA LA ENTRADA DEL TRANSCURSO DE LA TRANSMISION Y PARA EL TRANSCURSO DE LA RECEPCION DEL COMPENSADOR DEL HECHO (2). UN GENERADOR CASUAL - QUASI (16) LLEVA SIGNOS CASUALES A ESTE, DONDE UN ARTICULO DE TIEMPO DE FUNCIONAMIENTO (15) FORMA EL TIEMPO DE FUNCIONAMIENTO. UNA INSTALACION DE VALOR DE LA AMPLITUD UN DISPOSITIVO DE VIGILANCIA (18) REVISA, SI EL VALOR DE LA AMPLITUD EN LA SALIDA DEL TRANSCURSO DETRANSMISION SE DISMINUYE DESPUES DEL ENCQARAMIENTO DE 7 - BIT - VALOR DE LA AMPLITUD SOBRE UN VALOR RESIDUO. ESTA INSTALACION DE REVISION SE APLICA PARA LA EXAMINACION DE COMPENSADORES DEL HECHO EN CENTRALES INTERNACIONALES CABEZALES.
ES198888111242T 1987-07-16 1988-07-13 Instalacion de prueba para compensadores digitales de ecos. Expired - Lifetime ES2037147T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3723569 1987-07-16

Publications (1)

Publication Number Publication Date
ES2037147T3 true ES2037147T3 (es) 1993-06-16

Family

ID=6331725

Family Applications (1)

Application Number Title Priority Date Filing Date
ES198888111242T Expired - Lifetime ES2037147T3 (es) 1987-07-16 1988-07-13 Instalacion de prueba para compensadores digitales de ecos.

Country Status (8)

Country Link
EP (1) EP0300352B1 (es)
JP (1) JPH0748680B2 (es)
AT (1) ATE83344T1 (es)
AU (1) AU584020B2 (es)
DE (1) DE3876523D1 (es)
ES (1) ES2037147T3 (es)
GR (1) GR3007224T3 (es)
NO (1) NO300520B1 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3908284C1 (en) * 1989-03-14 1990-06-07 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De Test device for checking the cancelling function of a digital echo canceller
DE19960051A1 (de) * 1999-12-14 2001-06-21 Alcatel Sa Verfahren zur Echounterdrückung in einem Telekommunikationssystem und Echounterdrückungseinrichtung zur Durchführung des Verfahrens

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2448251A1 (fr) * 1979-02-02 1980-08-29 Radiotechnique Compelec Filtre passe-bas pour signaux basse frequence
FR2448258A1 (fr) * 1979-02-05 1980-08-29 Trt Telecom Radio Electr Systeme de test d'un dispositif muni d'un annuleur d'echo
SE441052B (sv) * 1984-02-01 1985-09-02 Ellemtel Utvecklings Ab Forfarande for att testa funktionen hos en anordning for adaptiv ekoeliminering
DE3583052D1 (de) * 1984-03-30 1991-07-11 Siemens Ag Schaltungsanordnung zum pruefen der funktionsfaehigkeit einer datenuebertragunseinrichtung.

Also Published As

Publication number Publication date
JPH0748680B2 (ja) 1995-05-24
JPS6436226A (en) 1989-02-07
AU1911188A (en) 1989-02-02
NO883128D0 (no) 1988-07-13
EP0300352B1 (de) 1992-12-09
DE3876523D1 (de) 1993-01-21
AU584020B2 (en) 1989-05-11
ATE83344T1 (de) 1992-12-15
NO883128L (no) 1989-01-17
NO300520B1 (no) 1997-06-09
EP0300352A1 (de) 1989-01-25
GR3007224T3 (es) 1993-07-30

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