ZyXEL Communications IES-612-51A User Manual

Chapter 15 xDSL Line Data

IES-612-51A User’s Guide

This screen displays an ADSL port’s line bit allocation.

Line Type

“Fast” stands for non-interleaved (fast mode) and “Interleaved” stands for 
interleaved mode.

Init

This field displays the number of link-ups and link-downs.

ATUC/ATUR ES

The Number of Errored Seconds transmitted (downstream) or received 
(upstream) on this ADSL port.

ATUC/ATUR 
SES

The Number of Severely Errored Seconds transmitted (downstream) or 
received (upstream) on this ADSL port. Severely errored seconds contained 
30% or more errored blocks or at least one defect. This is a subset of the Down/
Up Stream ES.

ATUC/ATUR 
UAS

The downstream or upstream number of UnAvailable Seconds.

Fast FEBE

In fast mode, the number of Far End Block Errors (Far End Cyclic Redundancy 
Checks).

Fast NEBE

In fast mode, the number of Near End Block Errors (Near End Cyclic 
Redundancy Checks).

Fast FEFEC

In fast mode, the Far End number of ADSL frames repaired by Forward Error 
Correction.

Fast NEFEC

In fast mode, the Near End number of ADSL frames repaired by Forward Error 
Correction.

Interleaved 
FEBE

In interleaved mode, the number of Far End Block Errors (Far End Cyclic 
Redundancy Checks).

Interleaved 
NEBE

In interleaved mode, the number of Near End Block Errors (Near End Cyclic 
Redundancy Checks).

Interleaved 
FEFEC

In interleaved mode, the Far End number of ADSL frames repaired by Forward 
Error Correction.

Interleaved 
NEFEC

In interleaved mode, the Near End number of ADSL frames repaired by Forward 
Error Correction.

LPR

This is the number of times that the subscriber’s ADSL device has experienced 
a Loss of Power (been off).

15 min, 1day history  This section of the screen displays line performance statistics for the current 

and previous 15-minute periods, as well as for the current and previous 24 
hours.

lofs

The number of Loss Of Frame Seconds that have occurred within the period.

loss

The number of Loss Of Signal Seconds that have occurred within the period.

lols

The number of Loss Of Link Seconds that have occurred within the period.

lprs

The number of Loss of Power Seconds that have occurred within the period.

es

The number of Errored Seconds that have occurred within the period.

init

The number of successful initializations that have occurred within the period.

ses

The number of Severely Errored Seconds that have occurred within the period.

uas

The number of UnAvailable Seconds that have occurred within the period.

Table 30   xDSL Performance (continued)