ZyXEL Communications MSC1024G Series User Manual page 220

Chapter 11 Subscriber Port Setup Screens
Table 82 ADSL Port Setup: Advanced (continued)
LABEL
ADSL Profile
Mode
Alarm Profile
ADSL2/2+
Feature
Annex I/J
Annex L
Annex M
Option Mask
Power
Management
Mode
L0time
L2time
L2atbr
L2atpr
L2minrate
L2maxrate
L2threshold
220
DESCRIPTION
Select a profile of ADSL settings (such as the transfer rate, interleave delay and
signal to noise ratio settings) to assign to this port. Use the ADSL Profile screen
to configure ADSL port profiles.
Select an ADSL mode from the drop-down list box the card is to use.
Select an alarm profile to define the thresholds that trigger an alarm on the port
when exceeded.
These are features available with ADSL2/2+. The subscriber's ADSL device must
also support the individual features in order to use them.
This feature is not available at the time of writing. Enable Annex I /J to use all
digital mode. With Annex I/J, the ADSL connection uses the full spectrum of the
physical line and the user cannot use POTS or ISDN service. This increases the
upstream data rate.
Note: The subscriber cannot use POTS or ISDN services when you
enable Annex I/J.
This feature is only available for Annex A cards. Enable Annex L to use reach
extended ADSL2. This allows increased connection distances.
Select enable (narrow) to enable extended ADSL2 in narrow Power Spectral
Density (PSD) mode. Narrow mode supports longer loop lengths but has lower
transmission speeds.
Select enable (wide) to enable extended ADSL2 in wide PSD mode. Narrow
mode supports higher transmission speeds but requires shorter loop lengths.
Select disable to disable extended ADSL2.
This feature is only available for Annex A cards. Enable Annex M to use double
upstream mode. This has the upstream connection use tones 6 to 63.
This field displays the bit mask that represents the features that have been
disabled for this connection. Click the bit mask number to open the Option Mask
screen where you can disable attributes for the port. This is for advanced
troubleshooting.
Enable power management to reduce the amount of power used overall and
reduce the instances of the connection going down. This increases or decreases
the transmission power based on line conditions. It also decreases the number of
service interruptions.
Select L2 to have the ADSL connection use power saving mode and reduce the
rate when there is no traffic. The rate comes back up when there is traffic.
Select L3 to use both power management modes L2 and L3. L3 puts the ADSL
connection to sleep mode when there is no traffic.
Set the time (10~ 65535 seconds) to stay in L0 mode.
Set the time (10~65535 seconds) to wait before performing another power trim in
L2 mode.
Set the maximum aggregated power reduction (APTR) per trim in dB (0~l2atprt).
Set the maximum total aggregate power reduction in dB (0~15).
Set the minimum rate in L2 (32~4096).
Set the maximum rate in L2 (minimum L2 rate ~ maximum upstream rate in kbps).
Set the line rate threshold to stay in L2 mode. When the rate is not within the
threshold, the port switches to L0 mode immediately.
MSC1000G/1024G/1224G Series User's Guide