ZyXEL Communications MSC1000G User Manual page 333

Figure 217 ADSL Profile
The following table describes the fields in this screen.
Table 155 ADSL Profile
LABEL
The top part of the screen is for profile configuration.
Name
Latency Mode
Upstream
Max Rate
(kbps)
Min Rate
(kbps)
Interleave
Delay (ms)
Max SNR (0.1
dB)
Management Switch Card User's Guide
DESCRIPTION
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 11.2 on page 331
The following parameters relate to upstream transmissions.
Type a maximum upstream transfer rate for this profile. Configure the maximum
upstream transfer rate to be less than the maximum downstream transfer rate.
Type the minimum upstream transfer rate 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 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 (measured in tenths of a decibel).
for more on interleave delay.
Chapter 11 Profile Screens
333