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Terminology Line Rate total data rate including overhead Net Data Rate portion of the total data rate that can be used to transmit user information (e.g. ATM cells or Ethernet frames). It excludes overhead that pertains to the physical transmission mechanism (e.g. trellis coding in case of DSL) Control Channel a bidirectional IP communication interface between the controller function (in the NAS) and the reporting/enforcement function (in the AN) Access Node Control Adjacency relationship between an Access Node and a NAS for the purpose of exchanging ANCP messages. The adjacency may either be up or down, depending on the result of the Access Node Control Adjacency protocol operation. Multicast flow multicast Any Source Multicast group or multicast Source Specific Multicast (S,G) channel |