Xdsl Port Setup; Chapter 16 Xdsl Port Setup; Adsl Standards Overview; Downstream And Upstream - ZyXEL Communications IES-1248-71 User Manual

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H A P T E R
This chapter explains how to configure settings for profiles and individual ADSL ports. It also
covers how to configure virtual channels and virtual channel profiles.

16.1 ADSL Standards Overview

These are the ADSL standards and rates that the IES-1248 supports at the time of writing. The
actual transfer rates will vary depending on what the subscriber's device supports, the line
conditions and the connection distance.

Table 18 ADSL Standards Maximum Transfer Rates

STANDARD
G.dmt (IES-1248-71/71A)
G.dmt Annex B (IES-1248-73)
G.lite (IES-1248-71/71A)
ETSI (IES-1248-73)
ANSI T1.413 issue 2 (IES-1248-71/71A)
ADSL2
ADSL2+

16.2 Downstream and Upstream

Downstream refers to traffic going out from the IES-1248 to the subscriber's ADSL modem or
router. Upstream refers to traffic coming into the IES-1248 from the subscriber's ADSL
modem or router.

16.3 Profiles

A profile is a table that contains a list of pre-configured ADSL settings. Each ADSL port has
one (and only one) profile assigned to it at any given time. You can configure multiple
profiles, including profiles for troubleshooting. Profiles allow you to configure ADSL ports
efficiently. You can configure all of the ADSL ports with the same profile, thus removing the
need to configure the ADSL ports one-by-one. You can also change an individual ADSL port
by assigning it a different profile.
IES-1248-71/73 User's Guide

xDSL Port Setup

MAXIMUM
DOWNSTREAM
8160 Kbps
8160 Kbps
4096 Kbps
8160 Kbps
8160 Kbps
12000 Kbps
25000 Kbps
16
MAXIMUM UPSTREAM
1024 Kbps
1024 Kbps
1024 Kbps
1024 Kbps
1024 Kbps
1200 Kbps
1200 Kbps
121