ZyXEL Communications IES-1248-51A, User Manual

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Chapter 17 xDSL Profiles Setup
IES-1248-51V User’s Guide
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Max SNR Type the maximum upstream signal to noise margin (0-31 dB).
Min SNR 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.
Target SNR 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.
Up Shift SNR 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.
Down Shift SNR The upstream down shift signal to noise margin (0-31 dB). 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.
Down Stream The following parameters relate to downstream transmissions.
Max Rate Type a maximum downstream transfer rate (64 to 32000 Kbps) bps
for this port. Configure the maximum downstream transfer rate to be
greater than the maximum upstream transfer rate.
Min Rate Type the minimum downstream transfer rate (32 to 32000 Kbps) for
this port. Configure the minimum downstream transfer rate to be less
than the maximum downstream transfer rate.
Interleave Delay 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.
Max SNR Type the maximum downstream signal to noise margin (0-31 dB).
Min SNR Type the minimum downstream signal to noise margin (0-31 dB).
Configure the minimum downstream signal to noise margin to be less
than or equal to the maximum downstream signal to noise margin.
Target SNR Type the target downstream signal to noise margin (0-31 dB).
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.
Up Shift SNR The downstream 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 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.
Table 26 Port Profile (continued)
LABEL DESCRIPTION