Adsl Infrastructure - HP ProCurve Secure 7000dl Series Basic Management And Configuration Manual

Secure router procurve 7000dl series

Hide thumbs Also See for ProCurve Secure 7000dl Series:

Table of Contents

When you configure an ADSL connection, you must configure both the Phys-

ical Layer and the Data Link Layer (which is also called the Logical Layer).

The Physical Layer is, of course, ADSL. The Data Link Layer protocol is

Asynchronous Transfer Mode (ATM).

ADSL Infrastructure

When you purchase an ADSL connection, your company's premises must be

connected to the public carrier's nearest CO. All of the telecommunications

infrastructure that is used to connect your company's premises to the CO is

collectively called the local loop.

ADSL uses modulation to increase the speed at which data can be transmitted

over the plain copper wire that is used for most local loops. Once the ADSL

traffic reaches the public carrier's CO, it is sent to a DSL Access Multiplexer

(DSLAM) and then routed over the regional broadband, or packet, network.

(See Figure 7-3.) Traffic transmitted over E1- and T1-carrier lines, on the other

hand, is sent to a voice switch before being transmitted through the public

carrier network.

Customer's Premises

Figure 7-3. The ADSL Network

The regional broadband network is connected to the Internet. (See Figure 7-4.)

Public Carrier's Central Office

ADSL WAN Connections

ADSL Overview

Table of Contents