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
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.
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)
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)
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. |
-
1988
- 1988-07-13 ES ES198888111242T patent/ES2037147T3/es not_active Expired - Lifetime
- 1988-07-13 EP EP88111242A patent/EP0300352B1/de not_active Expired - Lifetime
- 1988-07-13 NO NO883128A patent/NO300520B1/no unknown
- 1988-07-13 AT AT88111242T patent/ATE83344T1/de not_active IP Right Cessation
- 1988-07-13 DE DE8888111242T patent/DE3876523D1/de not_active Expired - Fee Related
- 1988-07-14 JP JP63173862A patent/JPH0748680B2/ja not_active Expired - Fee Related
- 1988-07-15 AU AU19111/88A patent/AU584020B2/en not_active Ceased
-
1993
- 1993-03-05 GR GR920402733T patent/GR3007224T3/el unknown
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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