Zyxel VES-1624FT-55A [99/312] Dsl profiles

VES-1624FT-55A User’s Guide

CHAPTER 16

xDSL Port Setup

This chapter explains how to configure settings for profiles and individual DSL ports. It also

covers how to configure virtual channels and virtual channel profiles.

16.1 DSL Profiles

A DSL profile is a table that contains a list of pre-configured DSL settings. Each DSL 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 DSL ports

efficiently. You can configure many DSL ports with the same profile, thus removing the need

to configure the settings of each DSL port one-by-one. You can also change an individual DSL

port’s settings by assigning it a different profile.

For example, you could set up different profiles for different kinds of accounts (for example,

economy, standard and premium). Assign the appropriate profile to a DSL port and it takes

care of a large part of the port’s configuration. You still get to individually enable or disable

each port, as well as configure its channels and operational mode. See the chapter on profiles

for how to configure DSL profiles.

16.2 Alarm Profiles

Alarm profiles define DSL port alarm thresholds. The system sends an alarm trap and

generates a syslog entry when the thresholds of the alarm profile are exceeded. See the chapter

on profiles for how to configure alarm profiles.

16.3 Interleave Delay

Interleave delay is the wait (in milliseconds) that determines the size of a single block of data

to be interleaved (assembled) and then transmitted. Interleave delay is used when transmission

error correction (Reed-Solomon) is necessary due to a less than ideal telephone line. The

bigger the delay, the bigger the data block size, allowing better error correction to be

performed.

Reed-Solomon codes are block-based error correcting codes with a wide range of applications.

The Reed-Solomon encoder takes a block of digital data and adds extra "redundant" bits. The

Reed-Solomon decoder processes each block and attempts to correct errors and recover the

original data.