Maximizing DSL Performance In The Field With Dynamic Line Management

Alcatel-Lucent

Abstract:

Dynamic Line Management (DLM) is operational in many Digital Subscriber Line (DSL) networks worldwide covering various use cases such as network stabilization, open-pipe architecture, service upgrade, and profile grooming. In this paper, we present the results of a 30-day field trial of the 5530 Network Analyzer DLM (R6.1) on over 1000 DSL lines in a live ADSLx network. A vast improvement in throughput for IPTV lines was proven, while maintaining the service stability. The data rate performance of the IPTV lines was increased by 30%, which allows offering an additional SDTV channel or the replacement of a SDTV by a HDTV channel. For the HSIA lines, DLM realized an improved service service stability without degrading the data rate. The number of unstable lines was decreased by a factor of 8 to 3.5%. For IPTV lines as well as HSIA lines, the positive impact of DLM was observed already after day 1. DLM converges after about 7 to 10 days. Thereafter, DLM continues optimizing the line configuration to the time-varying environmental conditions. This paper is intended for readers with a basic understanding of DSL and DLM.

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