FI793831A - Abonnentkoppling - Google Patents
AbonnentkopplingInfo
- Publication number
- FI793831A FI793831A FI793831A FI793831A FI793831A FI 793831 A FI793831 A FI 793831A FI 793831 A FI793831 A FI 793831A FI 793831 A FI793831 A FI 793831A FI 793831 A FI793831 A FI 793831A
- Authority
- FI
- Finland
- Prior art keywords
- abonnentkoppling
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/58—Anti-side-tone circuits
- H04M1/585—Anti-side-tone circuits implemented without inductive element
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2853167A DE2853167C2 (de) | 1978-12-08 | 1978-12-08 | Teilnehmerschaltung |
Publications (1)
Publication Number | Publication Date |
---|---|
FI793831A true FI793831A (fi) | 1980-06-09 |
Family
ID=6056702
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI793831A FI793831A (fi) | 1978-12-08 | 1979-12-07 | Abonnentkoppling |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0012247A1 (fi) |
DE (1) | DE2853167C2 (fi) |
FI (1) | FI793831A (fi) |
ZA (1) | ZA796649B (fi) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3121545C2 (de) * | 1981-05-29 | 1986-12-04 | Siemens AG, 1000 Berlin und 8000 München | Übersprech- u./o. Echo-Kompensationsschaltung |
US4887288A (en) * | 1988-12-28 | 1989-12-12 | American Telephone And Telegraph Company | Self calibration arrangement for a voice switched speakerphone |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL163926C (nl) * | 1970-03-12 | 1980-10-15 | Siemens Ag | Groep van echo-onderdrukkingsinrichtingen. |
FR2277470A1 (fr) * | 1974-07-03 | 1976-01-30 | Cit Alcatel | Dispositif de centrage d'un filtre transversal d'un annuleur d'echo |
US4126770A (en) * | 1975-11-07 | 1978-11-21 | Kokusai Denshin Denwa Kabushiki Kaisha | Echo canceller |
-
1978
- 1978-12-08 DE DE2853167A patent/DE2853167C2/de not_active Expired
-
1979
- 1979-11-20 EP EP79104614A patent/EP0012247A1/de not_active Ceased
- 1979-12-07 FI FI793831A patent/FI793831A/fi not_active Application Discontinuation
- 1979-12-07 ZA ZA00796649A patent/ZA796649B/xx unknown
Also Published As
Publication number | Publication date |
---|---|
ZA796649B (en) | 1980-11-26 |
DE2853167C2 (de) | 1980-10-30 |
DE2853167B1 (de) | 1980-03-13 |
EP0012247A1 (de) | 1980-06-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FA | Application withdrawn |
Owner name: SIEMENS AKTIENGESELLSCHAFT |