ZyXEL Communications P-873HNU-51B, User Manual

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Chapter 25 xDSL Statistics
P-873HNU(P)-51B User’s Guide
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Attainable Net
Data Rate These are the highest theoretically possible transfer rates at which the port could
send and receive payload data without transport layer protocol headers and
traffic.
xDSL Counters
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 97
Status > xDSL Statistics (continued)
LABEL DESCRIPTION