network attachment subsystem (NGN) (NASS)

The Network Attachment Subsystem (NASS) is a subsystem that performs various control functions at the transport level of Next Generation Networks( NGN).

For example, the NASS subsystem handles authentication, authorization, dynamic assignment of IP addresses, and other configuration parameters.

The control functions include the provision of individual communications services such as television, Internet or telephony, which are based on the information provided by the network operator to the NASS subsystem.