Two new technical reports (TR-058 and TR-059) from The DSL Forum will provide the foundation for the next generation of DSL network architecture, supporting end-to-end transport of IP with quality of service (QoS) and multicasting. Specifically, the new technical reports are expected to open up a new range and level of service offerings from value-added ASPs and ISPs, such as multiple VoIP channels, video conferencing, streaming entertainment video, rapid interaction online gaming and remote access to hosted applications.
Gavin Young, chairman of the DSL Forum’s technical committee, said “Developing the requirements and architecture for the next generation DSL networks has required consensus among many of the world’s largest service providers and equipment vendors to define the vision and specify the architecture.”
A central element in TR-059 is a new generation of network Gateway Router, also known as a broadband remote access server (B-RAS), which provides broadband aggregation and basic subscriber management, as well as dynamic bandwidth management, billing and QoS on a per-customer basis. TR-059 gives general guidelines for this new class of B-RAS and requires the equipment to fit into existing network architectures, while allowing for interworking with new customer premises equipment (CPE) that supports the traffic management of individual customer sessions, or ‘micro flows.’ This traffic management employs the traffic types defined in the Internet Engineering Task Force (IETF) specifications for DiffServ. A variety of QoS flows can be supported for multiple real time applications over a single DSL connection.
Full details of the DSL Forum technical reports TR-058 and TR-059 are available from the Forum’s website.
Technical Report TR-058
Technical Report TR-059http://www/dslforum.org
