Nomadix Access Gateways, User Manual, Page: 240 / 330

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228 The Subscriber Interface
Authorization and Billing
As a gateway device, the Access Gateway enables plug-and-play access to broadband
networks. Broadband network solution providers can now offer their subscribers a wide range
of high speed services, including access to the Internet. Of course, a high speed Internet
connection is not free – subscribers pay an access fee, based on the duration of their
connection. Additionally, subscribers may want to take advantage of the solution provider’s
local network services (for example, purchasing goods and local services). In either case, the
subscriber is required to pay. Naturally, subscribers expect to pay only for the services rendered
to them.
In any environment, billing is a complex process. It requires accurate data collection and
reconciliation, a means to validate and protect the data, and an efficient method for collecting
payments.
The Access Gateway offers powerful billing support functionality called “Authentication,
Authorization, and Accounting.” This feature (also known as AAA) employs a combination of
command routines designed to create a flexible, efficient, and secure billing environment. For
example, when a subscriber logs into the system, their unique MAC address is placed into an
authorization table. The system then authenticates the subscriber’s MAC address and billing
information before allowing them to access the Internet and make online purchases.