A method an a system for providing transparent Quality of Service (QoS) and reducing bandwidth usage in an ATM access network uses VC-merge and delivery of content directly through the access network. Root-initiated join proxy messages sent from a service gateway include a merge-eligibility indicator...http://www.google.com.hk/patents/US20010048683?utm_source=gb-gplus-share專利 US20010048683 - Transparent QoS using VC-merge capable access modules