CA2247729A1 - Communications signal splitter and filter - Google Patents
Communications signal splitter and filterInfo
- Publication number
- CA2247729A1 CA2247729A1 CA002247729A CA2247729A CA2247729A1 CA 2247729 A1 CA2247729 A1 CA 2247729A1 CA 002247729 A CA002247729 A CA 002247729A CA 2247729 A CA2247729 A CA 2247729A CA 2247729 A1 CA2247729 A1 CA 2247729A1
- Authority
- CA
- Canada
- Prior art keywords
- traffic
- telephony
- filter
- low
- response
- 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.)
- Granted
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
Abstract
A splitter separates telephony traffic (POTS) from digital subscriber line (ADSL) traffic occupying a higher frequency band. The splitter comprises a low-pass filter for passing the telephony traffic, the low-pass filter being operable to vary its filtering response between a first low-pass response for use during telephony speech traffic, and a second, more restrictive, low-pass response for use during at least part of the time that telephony signalling traffic is present. During speech traffic a filter is used which provides a good impedance match with a telephony terminal or linecard so as to minimise detrimental effects on sidetone and echo performance which may impair a user's speech quality. The filter response can be varied according to a detected property of the telephony traffic, such as amplitude or rate of change of amplitude of the traffic.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9726037.6A GB9726037D0 (en) | 1997-12-09 | 1997-12-09 | Communications signal splitter |
GB9726037.6 | 1997-12-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2247729A1 true CA2247729A1 (en) | 1999-06-09 |
CA2247729C CA2247729C (en) | 2007-01-09 |
Family
ID=10823348
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002247729A Expired - Lifetime CA2247729C (en) | 1997-12-09 | 1998-09-21 | Communications signal splitter and filter |
Country Status (6)
Country | Link |
---|---|
US (1) | US6477249B1 (en) |
EP (1) | EP0923221B1 (en) |
AT (1) | ATE280469T1 (en) |
CA (1) | CA2247729C (en) |
DE (1) | DE69827103T2 (en) |
GB (1) | GB9726037D0 (en) |
Families Citing this family (48)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI981319A (en) | 1998-06-10 | 1999-12-11 | Nokia Networks Oy | Separation of narrowband and broadband services on a transmission connection |
EP1118245B1 (en) | 1998-09-30 | 2007-06-20 | Infineon Technologies AG | Line terminator unit for a subscriber line |
US6188750B1 (en) | 1998-11-19 | 2001-02-13 | Excelsus Technologies, Inc. | Impedance blocking filter circuit |
US6181777B1 (en) * | 1998-11-19 | 2001-01-30 | Excelsus Technologies, Inc. | Impedance blocking filter circuit |
US6212259B1 (en) * | 1998-11-19 | 2001-04-03 | Excelsus Technologies, Inc. | Impedance blocking filter circuit |
US6757377B1 (en) * | 1998-12-30 | 2004-06-29 | Paradyne Corporation | Central office filter system and method |
DE19912008A1 (en) * | 1999-03-17 | 2000-09-21 | Philips Corp Intellectual Pty | Network station |
FR2793633B1 (en) * | 1999-04-23 | 2002-09-06 | France Telecom | LOW-PASS FILTERING DEVICE WITH INTEGRATED ISOLATOR AND PRIVATE INSTALLATION COMPRISING SUCH A DEVICE |
US6459790B1 (en) * | 1999-08-27 | 2002-10-01 | Efficient Networks, Inc. | System and method for selective filter isolation |
US6693916B1 (en) * | 1999-10-22 | 2004-02-17 | Viadux, Inc. | Method and system for combining symmetric DSL signals and voice signals |
EP1102514B1 (en) * | 1999-11-19 | 2009-01-21 | Alcatel Lucent | Telephone system, central office installation and splitter for analog telephone signals and digital data signals |
US20030223375A1 (en) * | 2000-01-03 | 2003-12-04 | Dael Govreen-Segal | Apparatus and method for shared line testing |
SE518713C2 (en) * | 2000-01-27 | 2002-11-12 | Ericsson Telefon Ab L M | Method and apparatus for signal filtration consisting of a passive filter with complex impedance |
US7447305B2 (en) * | 2000-01-27 | 2008-11-04 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and arrangement for filtering of signals |
US6826265B1 (en) | 2000-02-16 | 2004-11-30 | Paradyne Corporation | DSL-ready pots device and method |
DE10011125A1 (en) * | 2000-03-09 | 2002-03-07 | Alcatel Sa | Device and method for filtering signals |
JP3521840B2 (en) * | 2000-03-30 | 2004-04-26 | 日本電気株式会社 | Communication device |
US7333606B1 (en) | 2000-04-13 | 2008-02-19 | Adc Telecommunications, Inc. | Splitter architecture for a telecommunications system |
US6862353B2 (en) * | 2000-04-24 | 2005-03-01 | Broadcom Corporation | System and method for providing power over a home phone line network |
ES2240268T3 (en) * | 2000-04-28 | 2005-10-16 | Telbit Ag | CIRCUIT PROVISION FOR A WIDE BAND TRANSMITTER. |
IL152540A0 (en) * | 2000-05-22 | 2003-05-29 | Infineon Technologies Ag | Termination device for a telephone line |
US20020010870A1 (en) * | 2000-06-07 | 2002-01-24 | Gardner Steven Holmsen | Method and apparatus for dual-band modulation in powerline communication network systems |
US6785325B1 (en) * | 2000-06-07 | 2004-08-31 | Nortel Networks Limited | DSL splitter providing test access to an interconnected subscriber loop and method |
AU2001273416A1 (en) * | 2000-07-20 | 2002-02-05 | Adc Telecommunications Inc. | Voice/data signal splitter employing controllable bypass apparatus and method |
KR200207562Y1 (en) * | 2000-08-05 | 2000-12-15 | 주식회사씨앤드씨엔지니어링 | Sdsl data communication system using telephone circuit |
EP1325619A2 (en) * | 2000-10-02 | 2003-07-09 | Nortel Networks Limited | Filter and method therefor |
US6594343B1 (en) * | 2000-10-24 | 2003-07-15 | Turnstone Systems, Inc. | Splitter bypass architecture for testing multiple ports |
DE10059135B4 (en) * | 2000-11-29 | 2005-07-14 | Infineon Technologies Ag | transceiver |
US20020076035A1 (en) * | 2000-12-14 | 2002-06-20 | Wachel Robert D. | Passive DSL splitting |
US6990191B2 (en) * | 2000-12-29 | 2006-01-24 | Legerity, Inc. | Method and apparatus for handling voice and data signals |
US6895040B2 (en) * | 2001-05-01 | 2005-05-17 | Silicon Laboratories, Inc. | Architecture for a digital subscriber line analog front end |
US6944213B2 (en) * | 2001-05-01 | 2005-09-13 | Silicon Laboratories, Inc. | Adaptive hybrid for a digital subscriber line analog front end |
KR20030093338A (en) * | 2001-05-01 | 2003-12-06 | 실리콘 래버래토리즈 , 인코포레이티드 | Digital subscriber line analog front end with adaptive hybrid |
US20030083009A1 (en) * | 2001-10-25 | 2003-05-01 | Freyman Phillip Kent | Access device internet lock out reature |
US6895089B2 (en) | 2001-12-14 | 2005-05-17 | Adc Dsl Systems, Inc. | Pots splitter with line impedance matching |
US6853724B2 (en) | 2001-12-14 | 2005-02-08 | Adc Dsl Systems, Inc. | Cascade low-pass filter to improve xDSL band attenuation for POTS splitter |
JP2003198760A (en) * | 2001-12-26 | 2003-07-11 | Allied Tereshisu Kk | Vdsl system, terminal board for the same and connection terminal block for the same |
CN1291570C (en) * | 2003-05-12 | 2006-12-20 | 华为技术有限公司 | Wide band and narrow band business processing apparatus in commuication equipment and realizing method thereof |
IL159838A0 (en) | 2004-01-13 | 2004-06-20 | Yehuda Binder | Information device |
CN1725713B (en) * | 2004-07-22 | 2010-04-28 | 华为技术有限公司 | Broadband testing grab wire and protecting device |
ATE465595T1 (en) | 2005-11-04 | 2010-05-15 | Alcatel Lucent | IMPROVED ADSL DISTRIBUTOR |
ITMC20060100A1 (en) * | 2006-08-17 | 2006-11-16 | Stefano Marchetti | "AUTOMATIC SYSTEM FOR THE SUPPRESSION OF DISTURBANCES FOR TELEPHONE LINE INTERFACES". |
US20080118058A1 (en) * | 2006-11-22 | 2008-05-22 | Gyula Jakab | Splitter with Active Transient Suppression Circuit |
US8144861B2 (en) | 2006-12-20 | 2012-03-27 | Lantiq Deutschland Gmbh | Communication circuitry, devices and methods |
US8027461B1 (en) * | 2007-10-11 | 2011-09-27 | Adtran, Inc. | Systems and methods for splitting telecommunication signals with reduced noise |
EP2175667B1 (en) * | 2008-10-10 | 2014-01-01 | Alcatel Lucent | Universal ISDN/POTS splitter |
FR2941119B1 (en) * | 2009-01-09 | 2017-12-22 | Avivox | HIGH VOLUME COMMUNICATION SYSTEM THROUGH A PRIVATE TELECOMMUNICATION NETWORK |
US11362798B2 (en) * | 2018-09-07 | 2022-06-14 | Wilson Electronics, Llc | Channelization options for reducing network sensitivity |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0677938A1 (en) * | 1994-04-14 | 1995-10-18 | ALCATEL BELL Naamloze Vennootschap | Signal coupler |
US5757803A (en) * | 1995-11-27 | 1998-05-26 | Analog Devices, Inc. | Pots splitter assembly with improved transhybrid loss for digital subscriber loop transmission |
US5781728A (en) | 1996-03-15 | 1998-07-14 | Motorola Inc. | Flexible asymmetrical digital subscriber line ADSL transmitter, remote terminal using same, and method therefor |
AU2833297A (en) | 1996-05-21 | 1997-12-09 | Integrated Network Corporation | Multimedia over voice communication system |
US5848150A (en) * | 1997-02-26 | 1998-12-08 | Paradyne Corporation | Passive distributed filter system and method |
US6144735A (en) * | 1998-03-12 | 2000-11-07 | Westell Technologies, Inc. | Filters for a digital subscriber line system for voice communication over a telephone line |
-
1997
- 1997-12-09 GB GBGB9726037.6A patent/GB9726037D0/en not_active Ceased
-
1998
- 1998-09-04 AT AT98307124T patent/ATE280469T1/en not_active IP Right Cessation
- 1998-09-04 EP EP98307124A patent/EP0923221B1/en not_active Expired - Lifetime
- 1998-09-04 DE DE69827103T patent/DE69827103T2/en not_active Expired - Lifetime
- 1998-09-17 US US09/156,740 patent/US6477249B1/en not_active Expired - Lifetime
- 1998-09-21 CA CA002247729A patent/CA2247729C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US6477249B1 (en) | 2002-11-05 |
EP0923221B1 (en) | 2004-10-20 |
GB9726037D0 (en) | 1998-02-04 |
EP0923221A1 (en) | 1999-06-16 |
DE69827103T2 (en) | 2005-03-03 |
CA2247729C (en) | 2007-01-09 |
DE69827103D1 (en) | 2004-11-25 |
ATE280469T1 (en) | 2004-11-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20180921 |