ZyXEL Communications IES-612-51A User Manual page 126

Chapter 14 xDSL Profiles Setup
Table 25 Port Profile (continued)
LABEL
IGMP Filter Profile
Index
Name
Latency Mode
Down/Up Stream
Rate (kbps)
Select
Modify
Select
Delete
Name
Latency Mode
Up Stream
Max Rate
Min Rate
Interleave Delay
Max SNR
Min SNR
Target SNR
Up Shift SNR
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DESCRIPTION
Click IGMP Filter Profile to open the IGMP Filter Profile screen where you can
configure IGMP multicast filter profiles (see
This is the port profile index number.
These are the names of individual profiles. The DEFVAL profile always exists
and all of the DSL ports have it assigned to them by default. You can use up to
31 ASCII characters; spaces are not allowed.
This is the ADSL latency mode (Fast or Interleave) for the ports that belong to
this profile.
These are the maximum downstream and upstream transfer rates for the ports
that belong to this profile.
Select a profile's Select radio button and click Modify to edit the profile.
Select a profile's Select radio button and click Delete to remove the profile.
The rest of the screen is for profile configuration.
When editing a profile, this is the name of this profile. When adding a profile,
type a name (up to 31 characters) for the profile.
This field sets the ADSL latency mode for the ports that belong to this profile.
Select Fast mode to use no interleaving and have faster transmission (a "fast
channel"). This would be suitable if you have a good line where little error
correction is necessary.
Select Interleave mode to use interleave delay when transmission error
correction (Reed- Solomon) is necessary due to a less than ideal telephone line.
See Section 13.4 on page 108
The following parameters relate to upstream transmissions.
Type a maximum upstream transfer rate (64 to 4096 Kbps) for this profile.
Configure the maximum upstream transfer rate to be less than the maximum
downstream transfer rate.
Type the minimum upstream transfer rate (32 to 4096 Kbps) for this port.
Configure the minimum upstream transfer rate to be less than the maximum
upstream transfer rate.
Configure this field when you set the Latency Mode field to Interleave. Type
the number of milliseconds (1-255) of interleave delay to use for upstream
transfers. It is recommended that you configure the same latency delay for both
upstream and downstream.
Type the maximum upstream signal to noise margin (0-31 dB).
Type the minimum upstream signal to noise margin (0-31 dB). Configure the
minimum upstream signal to noise margin to be less than or equal to the
maximum upstream signal to noise margin.
Type the target upstream signal to noise margin (0-31 dB). Configure the target
upstream signal to noise margin to be greater than or equal to the minimum
upstream signal to noise margin and less than or equal to the maximum
upstream signal to noise margin.
The upstream up shift signal to noise margin (0-31 dB). When the channel's
signal to noise margin goes above this number, the device can attempt to use a
higher transfer rate. Configure the upstream up shift signal to noise margin to be
greater than or equal to the target upstream signal to noise margin and less than
or equal to the maximum upstream signal to noise margin.
Section 14.8 on page
for more on interleave delay.
IES-612-51A User's Guide
135).