ZyXEL Communications VMG4325-B10A - Page 253

Chapter 25 xDSL Statistics
VMG4380-B10A / VMG4325-B10A User’s Guide
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Downstream These are the statistics for the traffic direction coming into the port from the service
provider.
Upstream These are the statistics for the traffic direction going out from the port to the service
provider.
FEC This is the number of Far End Corrected blocks.
CRC This is the number of Cyclic Redundancy Checks.
ES This is the number of Errored Seconds meaning the number of seconds containing at least
one errored block or at least one defect.
SES This is the number of Severely Errored Seconds meaning the number of seconds containing
30% or more errored blocks or at least one defect. This is a subset of ES.
UAS This is the number of UnAvailable Seconds.
LOS This is the number of Loss Of Signal seconds.
LOF This is the number of Loss Of Frame seconds.
LOM This is the number of Loss of Margin seconds.
Table 100 Status > xDSL Statistics (continued)
LABEL DESCRIPTION