Introduction DSL is the prevailing broadband Internet access technology today featuring over 100 million subscribers worldwide. 1 The modern broadband market requires service providers to offer more than traditional data Internet access to DSL subscribers. Supporting delivery of combined voice, data and video services - or Triple Play over the same DSL connection has become an absolute necessity to stay competitive in the broadband access market. Delivery of Triple Play services places a spectrum of new functional, performance and quality of service requirements on the broadband DSL networks and devices such as DSLAMs and B-RASs that make up DSL networks infrastructure. Multicast & IGMP Snooping support along with multi-megabit bandwidth per subscriber are required for IPTV service delivery. VoD service takes the bandwidth requirements even further. Fragile VoIP traffic is extremely sensitive to delay and jitter, while IPTV traffic is particularly sensitive to packet loss. Both video and VoIP traffic need to be prioritized against the data services with uneven and unpredictable bandwidth utilization. The list can go on and on.