ZyXEL Communications MSC1000G User Manual page 164

MSC1000G User's Guide
Table 62 ADSL Profile (continued)
LABEL
Target SNR
(0.1 dB)
SRA Mode
Up-shift Noise
Margin (0.1
dB)
Down-shift
Noise Margin
(0.1 dB)
Downstream
Max Rate
(kbps)
Min Rate
(Kbps)
Interleave
Delay (ms)
Max SNR (0.1
dB)
Min SNR (0.1
dB)
Target SNR
(0.1 dB)
SRA Mode
Up-shift Noise
Margin (0.1
dB)
Down-shift
Noise Margin
(0.1 dB)
164
DESCRIPTION
Type the target upstream signal to noise margin (measured in tenths of a decibel).
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.
Select the upstream rate adaptation setting.
Select fix to not use any rate adaptation.
Select startup to use rate adaptation at initialization.
Select runtime to use rate adaptation at any time while the connection is up.
The upstream up shift signal to noise margin (measured in tenths of a decibel).
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.
The upstream down shift signal to noise margin (measured in tenths of a decibel).
When the channel's signal to noise margin goes below this number, the device
shifts to a lower transfer rate. Configure the upstream down shift signal to noise
margin to be less than or equal to the target upstream signal to noise margin and
greater than or equal to the minimum upstream signal to noise margin.
The following parameters relate to downstream transmissions.
Type a maximum downstream transfer rate for this port. Configure the maximum
downstream transfer rate to be greater than the maximum upstream transfer rate.
Type the minimum downstream transfer rate for this port. Configure the minimum
downstream transfer rate to be less than the maximum downstream 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 downstream signal to noise margin (measured in tenths of a
decibel).
Type the minimum downstream signal to noise margin (measured in tenths of a
decibel). Configure the minimum downstream signal to noise margin to be less
than or equal to the maximum downstream signal to noise margin.
Type the target downstream signal to noise margin (measured in tenths of a
decibel). Configure the target downstream signal to noise margin to be greater
than or equal to the minimum downstream signal to noise margin and less than or
equal to the maximum downstream signal to noise margin.
Select the downstream rate adaptation setting.
Select fix to not use any rate adaptation.
Select startup to use rate adaptation at initialization.
Select runtime to use rate adaptation at any time while the connection is up.
The downstream up shift signal to noise margin (measured in tenths of a decibel).
When the channel's signal to noise margin goes above this number, the device can
attempt to use a higher transfer rate. Configure the downstream up shift signal to
noise margin to be greater than or equal to the target downstream signal to noise
margin and less than or equal to the maximum downstream signal to noise margin.
The downstream down shift signal to noise margin (measured in tenths of a
decibel). When the channel's signal to noise margin goes below this number, the
device shifts to a lower transfer rate. Configure the downstream down shift signal
to noise margin to be less than or equal to the target downstream signal to noise
margin and greater than or equal to the minimum downstream signal to noise
margin.
Chapter 11 Profile Screens