WO2001063893A3 - Method and apparatus for termination detection in an adsl environment - Google Patents

Method and apparatus for termination detection in an adsl environment Download PDF

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Publication number
WO2001063893A3
WO2001063893A3 PCT/US2001/002917 US0102917W WO0163893A3 WO 2001063893 A3 WO2001063893 A3 WO 2001063893A3 US 0102917 W US0102917 W US 0102917W WO 0163893 A3 WO0163893 A3 WO 0163893A3
Authority
WO
WIPO (PCT)
Prior art keywords
voltage
current
termination
indication
graph
Prior art date
Application number
PCT/US2001/002917
Other languages
French (fr)
Other versions
WO2001063893A2 (en
Inventor
David Grossel
Original Assignee
Teradyne, Inc.
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 Teradyne, Inc. filed Critical Teradyne, Inc.
Priority to EP01906767A priority Critical patent/EP1260085A2/en
Priority to JP2001561994A priority patent/JP2003524343A/en
Priority to AU2001234637A priority patent/AU2001234637A1/en
Priority to CA002401054A priority patent/CA2401054A1/en
Priority to BR0108936-6A priority patent/BR0108936A/en
Publication of WO2001063893A2 publication Critical patent/WO2001063893A2/en
Publication of WO2001063893A3 publication Critical patent/WO2001063893A3/en

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/46—Monitoring; Testing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/24—Testing correct operation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/02—Calling substations, e.g. by ringing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/2209—Arrangements for supervision, monitoring or testing for lines also used for data transmission

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

A method and apparatus that will detect the presence of terminations in an ADSL environment is presented. The presently disclosed method and apparatus applies a slowly ramped voltage to the subscriber loop while measuring the current flow. The ramped voltage is able to pass through the inductors. The rate of current flow is discernible as the zener diodes of the Half Ringer, the Premises Splitter, and any Electronic Ringer start to conduct. Thus the detection in time (voltage) of devices that may be on the line under test is achieved. By analysis of a graph of the current in the line as the ramped voltage is applied, changes in the graph provide an indication that a termination is present. The location of the change in current with respect to the applied voltage provides an indication of the type of termination detected.
PCT/US2001/002917 2000-02-24 2001-01-30 Method and apparatus for termination detection in an adsl environment WO2001063893A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP01906767A EP1260085A2 (en) 2000-02-24 2001-01-30 Method and apparatus for termination detection in an adsl environment
JP2001561994A JP2003524343A (en) 2000-02-24 2001-01-30 Termination detection method and apparatus in ADSL environment
AU2001234637A AU2001234637A1 (en) 2000-02-24 2001-01-30 Method and apparatus for termination detection in an adsl environment
CA002401054A CA2401054A1 (en) 2000-02-24 2001-01-30 Method and apparatus for termination detection in an adsl environment
BR0108936-6A BR0108936A (en) 2000-02-24 2001-01-30 Measurement system and method for terminal detection within an adsl environment

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US51217900A 2000-02-24 2000-02-24
US09/512,179 2000-02-24

Publications (2)

Publication Number Publication Date
WO2001063893A2 WO2001063893A2 (en) 2001-08-30
WO2001063893A3 true WO2001063893A3 (en) 2002-07-18

Family

ID=24038025

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/002917 WO2001063893A2 (en) 2000-02-24 2001-01-30 Method and apparatus for termination detection in an adsl environment

Country Status (8)

Country Link
EP (1) EP1260085A2 (en)
JP (1) JP2003524343A (en)
AR (1) AR033511A1 (en)
AU (1) AU2001234637A1 (en)
BR (1) BR0108936A (en)
CA (1) CA2401054A1 (en)
TW (1) TW498674B (en)
WO (1) WO2001063893A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7333606B1 (en) 2000-04-13 2008-02-19 Adc Telecommunications, Inc. Splitter architecture for a telecommunications system
EP2111024A1 (en) * 2008-04-16 2009-10-21 Nokia Siemens Networks Oy Detection of devices and fault conditions by means of U/I or I/U characteristics

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4529847A (en) * 1983-12-12 1985-07-16 At&T Bell Laboratories Maintenance termination unit
WO1991011872A1 (en) * 1990-01-31 1991-08-08 Raychem S.A. Telecommunications line test system
US5636202A (en) * 1995-07-25 1997-06-03 Lucent Technologies Inc. Test system for detecting ISDN NT1-U interfaces
US5699402A (en) * 1994-09-26 1997-12-16 Teradyne, Inc. Method and apparatus for fault segmentation in a telephone network

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4529847A (en) * 1983-12-12 1985-07-16 At&T Bell Laboratories Maintenance termination unit
WO1991011872A1 (en) * 1990-01-31 1991-08-08 Raychem S.A. Telecommunications line test system
US5699402A (en) * 1994-09-26 1997-12-16 Teradyne, Inc. Method and apparatus for fault segmentation in a telephone network
US5636202A (en) * 1995-07-25 1997-06-03 Lucent Technologies Inc. Test system for detecting ISDN NT1-U interfaces

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"NETWORK AND CUSTOMER INSTALLATION INTERFACES - ASYMMETRIC DIGITAL SUBSCRIBER LINE (ADSL) METALLIC INTERFACE", ANSI T1.413-1998. REVISION OF ANSI T1.413-1995. NETWORK AND CUSTOMER INSTALLATION INTERFACES - ASYMMETRIC DIGITAL SUBSCRIBER LINE (ADSL) METALLIC INTERFACE, XX, XX, PAGE(S) A-C,I-XIII,1-246, XP000955261 *

Also Published As

Publication number Publication date
JP2003524343A (en) 2003-08-12
BR0108936A (en) 2003-12-09
TW498674B (en) 2002-08-11
AR033511A1 (en) 2003-12-26
AU2001234637A1 (en) 2001-09-03
CA2401054A1 (en) 2001-08-30
EP1260085A2 (en) 2002-11-27
WO2001063893A2 (en) 2001-08-30

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