ZyXEL Communications MSAP2000 Adsl Port Setup, Adsl Standards Overview, Downstream and Upstream

MSAP2000 AAMS User’s Guide

CHAPTER 7

ADSL Port Setup

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.

7.1 ADSL Standards Overview

These are the ADSL standards and rates that the MSAP2000 AAMS supports at the time of writing.

Table 14 Maximum Transfer Rates of the ADSL Ports

STANDARD	MAXIMUM DOWNSTREAM	MAXIMUM UPSTREAM
G.dmt	8160 Kbps	1024 Kbps
ANSI T1.413 issue 2	8160 Kbps	1024 Kbps
G.lite	1536 Kbps	512 Kbps
ADSL2	12000 Kbps	1200 Kbps
ADSL2+	24000 Kbps	1200 Kbps

7.2 Downstream and Upstream

Downstream refers to traffic going out from the MSAP2000 AAMS to the subscriber's ADSL modem or router. Upstream refers to traffic coming into the MSAP2000 AAMS from the subscriber's ADSL modem or router.

7.3 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. The profile defines the latency mode and upstream/downstream latency delay, maximum and minimum upstream/ downstream rates, the target upstream/downstream signal noise margins, and the maximum and minimum upstream/downstream acceptable noise margins of all the ADSL ports that have this profile. 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.

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