Viewing Lan Status - ZyXEL Communications Prestige 630-C series User Manual

LABEL
The following fields display upstream and downstream statistics for the ADSL connection.
SNR Margin
Line Attenuation
Errored Seconds
Loss of Signal
Loss of Frame
CRC Errors
Data Rate
Latency
5.3

Viewing LAN Status

Click LAN to view the LAN screen as shown next.
Introducing the Web Configurator
Table 5-1 ADSL Status
This is the amount of increased noise that can be tolerated while maintaining the
designed BER (bit error rate). The SNR Margin is set by the Central Office
DSLAM. If the SNR Margin is increased, bit error rate performance will improve,
but the data rate will decrease. Conversely, if the SNR Margin is decreased, bit
error rate performance will decrease, but the data rate will increase.
Attenuation is the decrease in magnitude of the ADSL line signal between the
transmitter (Central Office DSLAM) and the receiver (the Prestige), measured in
dB. It is measured by calculating the difference in dB between the signal power
level received at the Prestige and the reference signal power level transmitted
from the Central Office DSLAM.
This is the number of errors. Whenever a given second contains a CRC error,
that second will be declared an error second.
This field displays the number of times the ADSL signal has been lost.
This field displays the number of times an ADSL frame has been lost.
This is the total number of frames that have CRC errors.
This is the ADSL data rate.
This field displays the latency modes (fast or interleave).
Prestige 630-C Series ADSL USB Modem
DESCRIPTION
5-3