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Remote Access Overview

Broadband Remote Access Server (B-RAS) is an application running on your router that:

Aggregates the output from digital subscriber line access multiplexers (DSLAMs)
Provides user Point-to-Point Protocol (PPP) sessions or IP-over-Asynchronous Transfer Mode (ATM) sessions
Enforces quality of service (QoS) policies
Routes traffic into an Internet service provider’s (ISP’s) backbone network

A DSLAM collects data traffic from multiple subscribers into a centralized point so that it can be uploaded to the router over an ATM connection via a DS3, OC3, E3, or OC12 link.

The router provides the logical termination for PPP sessions, as well as the interface to authentication and accounting systems.

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