Offering vertical services to subscribers and service providers is an avenue to immediately improve the competitiveness of digital subscriber line access service, for example of the type offered by a local exchange carrier. To deliver high-quality vertical services, however, the underlying ADSL Data...http://www.google.fr/patents/US6424657?utm_source=gb-gplus-shareBrevet US6424657 - Traffic queueing for remote terminal DSLAMs
