WO2004092911A3 - System and method for preventing phantom data communication links - Google Patents

System and method for preventing phantom data communication links Download PDF

Info

Publication number
WO2004092911A3
WO2004092911A3 PCT/US2004/011483 US2004011483W WO2004092911A3 WO 2004092911 A3 WO2004092911 A3 WO 2004092911A3 US 2004011483 W US2004011483 W US 2004011483W WO 2004092911 A3 WO2004092911 A3 WO 2004092911A3
Authority
WO
WIPO (PCT)
Prior art keywords
data communication
communication links
head
phantom data
switching system
Prior art date
Application number
PCT/US2004/011483
Other languages
French (fr)
Other versions
WO2004092911A2 (en
Inventor
Hugh Barrass
Brian A Arnold
Original Assignee
Cisco Tech Ind
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 Cisco Tech Ind filed Critical Cisco Tech Ind
Priority to AU2004229796A priority Critical patent/AU2004229796B2/en
Priority to CN2004800097035A priority patent/CN1771683B/en
Priority to CA002521473A priority patent/CA2521473C/en
Priority to EP04759524A priority patent/EP1614243A4/en
Publication of WO2004092911A2 publication Critical patent/WO2004092911A2/en
Publication of WO2004092911A3 publication Critical patent/WO2004092911A3/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/22Arrangements for supervision, monitoring or testing
    • H04M3/26Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/34Testing for cross-talk
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B3/00Line transmission systems
    • H04B3/02Details
    • H04B3/32Reducing cross-talk, e.g. by compensating
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B3/00Line transmission systems
    • H04B3/02Details
    • H04B3/46Monitoring; Testing
    • H04B3/487Testing crosstalk effects
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M11/00Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H04M11/062Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/22Arrangements for supervision, monitoring or testing
    • H04M3/26Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
    • H04M3/302Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop using modulation techniques for copper pairs
    • H04M3/304Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop using modulation techniques for copper pairs and using xDSL modems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/22Arrangements for supervision, monitoring or testing
    • H04M3/26Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
    • H04M3/305Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop testing of physical copper line parameters, e.g. capacitance or resistance
    • H04M3/306Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop testing of physical copper line parameters, e.g. capacitance or resistance for frequencies above the voice frequency, e.g. xDSL line qualification

Abstract

A data communication system (10) is provided that comprises a head-end switching system (12) which comprises a plurality of communication ports. A port controller (14) causes the ports to sequentially issue inquiry signals to network termination points. This sequential processing of inquiry signals prevents the formation of phantom links that may occur if physical conductors which are susceptible to crosstalk interference with connected conductors erroneously convey a response signal back to an unattached port within the head-in switching system.
PCT/US2004/011483 2003-04-14 2004-04-13 System and method for preventing phantom data communication links WO2004092911A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU2004229796A AU2004229796B2 (en) 2003-04-14 2004-04-13 System and method for preventing phantom data communication links
CN2004800097035A CN1771683B (en) 2003-04-14 2004-04-13 System and method for preventing phantom data communication links
CA002521473A CA2521473C (en) 2003-04-14 2004-04-13 System and method for preventing phantom data communication links
EP04759524A EP1614243A4 (en) 2003-04-14 2004-04-13 System and method for preventing phantom data communication links

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/412,889 US7106688B2 (en) 2003-04-14 2003-04-14 System and method for preventing phantom data communication links
US10/412,889 2003-04-14

Publications (2)

Publication Number Publication Date
WO2004092911A2 WO2004092911A2 (en) 2004-10-28
WO2004092911A3 true WO2004092911A3 (en) 2005-01-06

Family

ID=33298363

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/011483 WO2004092911A2 (en) 2003-04-14 2004-04-13 System and method for preventing phantom data communication links

Country Status (6)

Country Link
US (1) US7106688B2 (en)
EP (1) EP1614243A4 (en)
CN (1) CN1771683B (en)
AU (1) AU2004229796B2 (en)
CA (1) CA2521473C (en)
WO (1) WO2004092911A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2455586C (en) * 2002-05-27 2012-01-03 Ntt Docomo, Inc. Mobile communication system, transmission station, reception station, relay station, communication path deciding method, and communication path deciding program
TW589541B (en) * 2003-03-07 2004-06-01 Acer Labs Inc Low cross-talk design and related method for co-layout of different buses in an electric board
US7369542B1 (en) * 2004-03-04 2008-05-06 At&T Corp. Method and apparatus for routing data
GB2480830B (en) 2010-06-01 2017-03-22 Cable Sense Ltd Signal processing apparatuses and methods
WO2015002584A1 (en) * 2013-07-03 2015-01-08 Telefonaktiebolaget Lm Ericsson (Publ) Radio unit and method performed by a radio unit operable in a base station system of a wireless communication network for reducing interference at the radio unit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6473438B1 (en) * 1994-06-02 2002-10-29 Amati Communications Corporation Method and apparatus for coordinating multi-point to-point communications in a multi-tone data transmission system
US6633545B1 (en) * 1999-07-30 2003-10-14 Cisco Technology, Inc. System and method for determining the data rate capacity of digital subscriber lines

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59305898D1 (en) * 1993-12-22 1997-04-24 Siemens Ag Optoelectronic component and method for its production
US6055297A (en) * 1996-08-02 2000-04-25 Northern Telecom Limited Reducing crosstalk between communications systems
US5887032A (en) * 1996-09-03 1999-03-23 Amati Communications Corp. Method and apparatus for crosstalk cancellation
US6219378B1 (en) * 1997-09-17 2001-04-17 Texas Instruments Incorporated Digital subscriber line modem initialization
US5982741A (en) * 1998-09-17 1999-11-09 Tut Systems, Inc. Method and apparatus for automatically reducing cross-talk between wires coupled to a common network device
US6724849B1 (en) * 2000-02-29 2004-04-20 Centillium Communications, Inc. Method and apparatus for timing recovery in ADSL transceivers under a TCM-ISDN crosstalk environment
US6687288B1 (en) * 2000-08-22 2004-02-03 Actelis Networks Inc. NEXT cancellation for modem pools
CA2430566A1 (en) * 2001-01-17 2002-07-25 Telcordia Technologies, Inc. Crosstalk identification for spectrum management in broadband telecommunications systems
US6990196B2 (en) * 2001-02-06 2006-01-24 The Board Of Trustees Of The Leland Stanford Junior University Crosstalk identification in xDSL systems
FR2823148A1 (en) * 2001-04-09 2002-10-11 Michelin Soc Tech DEVICE FOR FIXING AN ELECTRONIC MONITORING MODULE ON A TIRE
US7158563B2 (en) * 2001-06-01 2007-01-02 The Board Of Trustees Of The Leland Stanford Junior University Dynamic digital communication system control

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6473438B1 (en) * 1994-06-02 2002-10-29 Amati Communications Corporation Method and apparatus for coordinating multi-point to-point communications in a multi-tone data transmission system
US6633545B1 (en) * 1999-07-30 2003-10-14 Cisco Technology, Inc. System and method for determining the data rate capacity of digital subscriber lines

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1614243A4 *

Also Published As

Publication number Publication date
EP1614243A2 (en) 2006-01-11
AU2004229796A1 (en) 2004-10-28
EP1614243A4 (en) 2007-04-04
CN1771683A (en) 2006-05-10
AU2004229796B2 (en) 2007-12-20
CN1771683B (en) 2010-05-12
US7106688B2 (en) 2006-09-12
CA2521473A1 (en) 2004-10-28
WO2004092911A2 (en) 2004-10-28
US20040213216A1 (en) 2004-10-28
CA2521473C (en) 2008-11-04

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