Christian Sauer Matthias Gries Sören Sonntag Dietmar Tolle Bo Wu Rudi Knorr Trends in Access Networks and their Implementation in DSLAMs. 493-494 2005 conf/lcn/2005 LCN http://doi.ieeecomputersociety.org/10.1109/LCN.2005.132 db/conf/lcn/lcn2005.html#SauerGSTWK05