DK169115B1 - Fremgangsmåde og kredsløb til indstilling af programmerbare gaffelkoblingers abonnentlednings-balanceringsimpedanser - Google Patents
Fremgangsmåde og kredsløb til indstilling af programmerbare gaffelkoblingers abonnentlednings-balanceringsimpedanser Download PDFInfo
- Publication number
- DK169115B1 DK169115B1 DK201688A DK201688A DK169115B1 DK 169115 B1 DK169115 B1 DK 169115B1 DK 201688 A DK201688 A DK 201688A DK 201688 A DK201688 A DK 201688A DK 169115 B1 DK169115 B1 DK 169115B1
- Authority
- DK
- Denmark
- Prior art keywords
- connection
- pcm
- subscriber
- individual control
- wire
- Prior art date
Links
- 238000010168 coupling process Methods 0.000 title claims description 40
- 230000008878 coupling Effects 0.000 title claims description 39
- 238000005859 coupling reaction Methods 0.000 title claims description 39
- 238000000034 method Methods 0.000 title claims description 18
- 230000000694 effects Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 2
- 238000004886 process control Methods 0.000 claims 2
- 238000002592 echocardiography Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000003044 adaptive effect Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 150000002506 iron compounds Chemical class 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/54—Circuits using the same frequency for two directions of communication
- H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/03—Hybrid circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3712662 | 1987-04-14 | ||
| DE3712662 | 1987-04-14 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK201688D0 DK201688D0 (da) | 1988-04-13 |
| DK201688A DK201688A (da) | 1988-10-15 |
| DK169115B1 true DK169115B1 (da) | 1994-08-15 |
Family
ID=6325607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK201688A DK169115B1 (da) | 1987-04-14 | 1988-04-13 | Fremgangsmåde og kredsløb til indstilling af programmerbare gaffelkoblingers abonnentlednings-balanceringsimpedanser |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US5043977A (fi) |
| EP (1) | EP0286835B1 (fi) |
| JP (1) | JPS63263992A (fi) |
| AR (1) | AR243047A1 (fi) |
| AT (1) | ATE71783T1 (fi) |
| BR (1) | BR8801756A (fi) |
| DE (1) | DE3867676D1 (fi) |
| DK (1) | DK169115B1 (fi) |
| FI (1) | FI88090C (fi) |
| GR (1) | GR3004340T3 (fi) |
| PT (1) | PT87228B (fi) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE145507T1 (de) * | 1990-04-12 | 1996-12-15 | Siemens Ag | Verfahren zum überprüfen von übertragungseigenschaften einer teilnehmeranschlussschaltung |
| SE501975C2 (sv) * | 1993-11-09 | 1995-07-03 | Ericsson Telefon Ab L M | Gränssnittskrets mellan fyrtrådsledning och tvåtrådsledning |
| DE10120070A1 (de) * | 2001-04-24 | 2002-11-07 | Siemens Ag | Vorrichtung und Verfahren zum Anpassen der Leitungseigenschaften bei hochbitratigen Datenübertragungen |
| CN112964963B (zh) * | 2021-02-07 | 2024-06-04 | 中国南方电网有限责任公司 | 基于ca-wmm的混合直流线路故障测距方法及系统 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1583635A (en) * | 1977-03-02 | 1981-01-28 | Int Standard Electric Corp | Subscriber line or trunk circuit |
| US4254305A (en) * | 1979-02-07 | 1981-03-03 | International Telephone And Telegraph Corporation | Current limited subscriber line feed circuit |
| JPS56122580A (en) * | 1980-03-03 | 1981-09-26 | Hitachi Ltd | Line terminating system of time division telephone switchboard |
| US4381561A (en) * | 1980-10-23 | 1983-04-26 | International Telephone And Telegraph Corporation | All digital LSI line circuit for analog lines |
| US4489222A (en) * | 1982-09-13 | 1984-12-18 | The Board Of Trustees Of The Leland Stanford, Junior University | Telephone line interface |
| DE3409877A1 (de) * | 1984-03-17 | 1985-09-19 | Neumann Elektronik GmbH, 4330 Mülheim | Einrichtung zur optimalen anpassung einer gabelschaltung an eine fernmeldeleitung |
| CA1208715A (en) * | 1984-05-09 | 1986-07-29 | Northern Telecom Limited | Adaptive hybrid |
| GB2178925B (en) * | 1985-08-09 | 1989-04-12 | Plessey Co Plc | Line terminating apparatus |
| US4685103A (en) * | 1985-12-24 | 1987-08-04 | Gte Communication Systems Corporation | Control circuit for a centrex attendant console interface |
-
1988
- 1988-03-10 DE DE8888103805T patent/DE3867676D1/de not_active Expired - Fee Related
- 1988-03-10 AT AT88103805T patent/ATE71783T1/de active
- 1988-03-10 EP EP88103805A patent/EP0286835B1/de not_active Expired - Lifetime
- 1988-03-25 AR AR88310411A patent/AR243047A1/es active
- 1988-04-05 JP JP63082391A patent/JPS63263992A/ja active Pending
- 1988-04-13 BR BR8801756A patent/BR8801756A/pt not_active IP Right Cessation
- 1988-04-13 PT PT87228A patent/PT87228B/pt not_active IP Right Cessation
- 1988-04-13 DK DK201688A patent/DK169115B1/da not_active IP Right Cessation
- 1988-04-13 FI FI881717A patent/FI88090C/fi not_active IP Right Cessation
-
1990
- 1990-01-31 US US07/474,316 patent/US5043977A/en not_active Expired - Fee Related
-
1992
- 1992-04-15 GR GR910402216T patent/GR3004340T3/el unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FI88090C (fi) | 1993-03-25 |
| US5043977A (en) | 1991-08-27 |
| PT87228A (pt) | 1989-05-12 |
| GR3004340T3 (fi) | 1993-03-31 |
| DE3867676D1 (de) | 1992-02-27 |
| JPS63263992A (ja) | 1988-10-31 |
| ATE71783T1 (de) | 1992-02-15 |
| PT87228B (pt) | 1995-05-31 |
| DK201688A (da) | 1988-10-15 |
| EP0286835A1 (de) | 1988-10-19 |
| FI881717A0 (fi) | 1988-04-13 |
| BR8801756A (pt) | 1988-11-16 |
| EP0286835B1 (de) | 1992-01-15 |
| DK201688D0 (da) | 1988-04-13 |
| FI88090B (fi) | 1992-12-15 |
| FI881717A (fi) | 1988-10-15 |
| AR243047A1 (es) | 1993-06-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0791251B1 (en) | Echo cancellation using cross-correlation of buffered receive and transmit sample segments to determine cancelling filter coefficients | |
| US4911515A (en) | Optical fiber communications system with optical fiber monitoring | |
| JP2648406B2 (ja) | ディジタルループ伝送システム装置 | |
| US4547633A (en) | Method of and circuit for locating faults in a digital telecommunication subscriber termination | |
| US5559854A (en) | Subscriber's line testing apparatus | |
| DK169115B1 (da) | Fremgangsmåde og kredsløb til indstilling af programmerbare gaffelkoblingers abonnentlednings-balanceringsimpedanser | |
| US5479503A (en) | Two-wire to four-wire switching exchanger | |
| US7664232B2 (en) | Method and system for distance measurements | |
| US3637954A (en) | Method and apparatus for dynamic testing of echo suppressors in telephone trunk systems | |
| US5596623A (en) | Testing and complaint accepting communication unit | |
| US4331843A (en) | Apparatus for controlling and indicating the integrity of the connection of telephone subscribers to a switching system | |
| CZ71896A3 (en) | Apparatus for detecting identifiers of elements within a telecommunications system | |
| US4445007A (en) | Remote testing of subscriber line interface circuits | |
| CA1131739A (en) | Test arrangement for communication paths in time-division multi-plexed switching systems | |
| EP1699171A1 (en) | Test system and test method for broadband telecommunications | |
| US3662125A (en) | Telephone line testing arrangement | |
| CA2481089C (en) | Global digital measurement device | |
| JPS6394756A (ja) | 無効保留呼の判定方式 | |
| SU771903A1 (ru) | Устройство дл св зи телефонных станций | |
| AU691045C (en) | Echo cancellation using cross-correlation of buffered receive and transmit sample segments to determine cancelling filter coefficients | |
| JPH0695653B2 (ja) | エコー補償装置 | |
| SU566394A2 (ru) | Устройство дл непрерывного контрол качества телефонных каналов дальней св зи | |
| JPS61154343A (ja) | デイジタル加入者線監視方式 | |
| WO1998005179A1 (en) | Improvements in, or relating to, measurement of telecommunications connection quality | |
| JPH0217980B2 (fi) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B1 | Patent granted (law 1993) | ||
| PBP | Patent lapsed |