ZyXEL Communications IES-1248-51 User Manual page 139

Table 25 Port Profile (continued)
LABEL
Target SNR
Up Shift SNR
Down Shift SNR
Down Stream
Max Rate
Min Rate
Interleave Delay
Max SNR
Min SNR
Target SNR
Up Shift SNR
Down Shift SNR
Add
Cancel
Chapter 17 xDSL Profiles Setup
DESCRIPTION
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.
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.
The following parameters relate to downstream transmissions.
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.
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.
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 downstream signal to noise margin (0-31 dB).
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.
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.
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.
The downstream 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 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.
Click Add to save your changes to the IES-1248's volatile memory. The IES-
1248 loses these changes if it is turned off or loses power, so use the Config
Save link on the navigation panel to save your changes to the non-volatile
memory when you are done configuring.
Click Cancel to start configuring the screen again.
IES-1248-51/51A/53 User's Guide
139