ZyXEL Communications VES1724-56 User Manual page 62

Chapter 7 System Status and Port Statistics
Table 7 Status: VDSL Port Details (continued)
LABEL
Uncorrected
Rtx
RtxCorrected
RtxUncorrected
LEFTRs
MinEFTR
ErrFreeBits
LOLs/LOL
LPRs/LPR
Time Elapsed
VDSL Performance
History
VDSL INM
Performance
History
VDSL sub-carrier
status
Items
Direction
62
DESCRIPTION
This field displays the number of code words containing one or more error blocks that
can not be corrected.
This field displays the number of RS (Reed-Solomon) codewords or DTUs (Data Transfer
Units) retransmitted through PhyR or G.INP retransmissions.
This field displays the number of RS codewords or DTUs that have been corrected
through PhyR or G.INP retransmissions.
This field displays the number of RS codewords or DTUs that were not corrected
successfully through PhyR or G.INP retransmissions.
This field displays the number of seconds during which the Error Free Throughput went
below the pre-configured threshold.
This field displays the lowest value of the Error Free Throughput within the current
interval.
This field displays the number of bits that passed through the alpha1/beta1 interface
(bits that are available to carry user payload).
This field displays the count of 1-second intervals containing one or more Loss Of Link
(LOL) failures and the number of times an LOL failure occurred.
This field displays the count of 1-second intervals containing one or more PoweR (LPR)
failures and the number of times an LPR failure occurred.
This field displays how many seconds has elapsed currently in this 15-minute (900
seconds) time segment. The counter restarts to zero after entering the next time
segment.
Click the 15 Min Interval link to display a screen listing VDSL performance information
for the previous 15-minute periods.
Click the One Day Interval link to display a screen listing VDSL performance
information for the previous 24-hour periods.
Click the Current link to display a screen listing INM (Impulse Noise Monitor) counters
recorded since the link was last up or counters for the current 15-minute and 24-hour
periods.
Click the 15 Min Interval link to display a screen listing INM counters for the previous
15-minute periods.
Click the One Day Interval link to display a screen listing INM counters for the previous
24-hour periods.
See Section 9.3.9 on page 119
control parameters.
This section allows you to select the criteria below and display you the status in a raw
data list or in a graph.
Select Hlog (Channel Transfer Function) to see the line's capability against interference
and attenuation.
Select QLN (Quiet Line Noise) to see the line's noise level.
Select SNR (Signal-to-Noise-Ratio) to see the line's signal strength level.
Select BitAlloc to display the number of bits allocated to each tone. The higher the bit
allocated, the higher the data transmission rate.
Select GainAlloc to display the gain allocated to each tone. Normally, each tone gets a
different gain value allocated to avoid interference.
Select Downstream or Upstream for the direction. Select Both for both downstream
and upstream directions.
on how to configure VDSL INM profiles which define INM
VES1724-56 User's Guide