ZyXEL Communications VMG1312-B User Manual

 Chapter 25 xDSL Statistics

VMG1312-B Series User’s Guide

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.

Status > xDSL Statistics (continued)