AES-100 User’s Guide

Chapter 5

ADSL Configuration

The ADSL (Asymmetrical Digital Subscriber Line) subsystem allows you to configure and monitor the ADSL ports.

5.1ADSL Standards

The AES-100 supports both the G.lite and the G.dmt standards. G.lite is intended to minimize the cost for the consumer market.

Table 5-1 Maximum Transfer Rates of the AES-100’s ADSL Ports

STANDARD

MAXIMUM DOWNSTREAM

MAXIMUM UPSTREAM

G.dmt

8160 Kbps

1024 Kbps

 

 

 

G.lite

1536 Kbps

512 Kbps

 

 

 

T1.413

8160 Kbps

1024 Kbps

 

 

 

5.2Profiles

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 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 by modifying the 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.

For example, you could set up different profiles for different kinds of accounts (say economy, standard and premium). Assign the appropriate profile an ADSL port to 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 encapsulation type, multiplexing mode, VPI, VCI and operational mode. See later in this chapter for how to configure profiles.

5.3Configured Vs. Actual Rate

You configure the maximum rate of an individual ADSL port by modifying its profile (see the set profile command) or assigning the port to a different profile (see the set port command). However, due to noise and other factors on the line, the actual rate may not reach the maximum that you specify.

Even though you can specify arbitrary numbers in the set profile command, the actual rate is always a multiple of 32 Kbps. If you enter a rate that is not a multiple of 32 Kbps, the actual rate will be the next lower multiple of 32Kbps. For instance, if you specify 60 Kbps for a port, the actual rate for that port will not exceed 32 Kbps, and if you specify 66 Kbps, the actual rate will not be over 64Kbps.

ADSL Configuration

5-1