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Automated loop identification on DSL lines

✍ Scribed by Kenneth J. Kerpez

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
157 KB
Volume
22
Category
Article
ISSN
1074-5351

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Regular ADSL and new FTTN VDSL2 deployments are strongly affected by the telephone loop, or channel, that they transmit over. Telephone companies keep records of the loop make‐upβ€”all cable sections, gauges, lengths and bridged taps between the DSLAM and customer, and these records are vital for loop qualification and maintenance. However, loop records are often incomplete or inaccurate due to re‐work. New ADSL2, ADSL2 + and VDSL2 equipment can automatically report loop response estimates, and this paper shows how this response can be used to identify an estimate of the loop make‐up. The algorithm for loop identification here is shown to be more accurate than previous, simple, techniques. Copyright Β© 2009 John Wiley & Sons, Ltd.

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