Chapter 7 System Status and Port Statistics
VES1724-56 User’s Guide
61
Actual INP
against REIN
This field displays the actual impulse noise protection (INP) levels guaranteed on the
latency path against REIN (Repetitive Electrical Impulse Noise) which is related to AC
power frequency.
RS CW per DTU This field displays the number of Reed-Solomon codewords per DTU (Data Transfer Unit).
VDSL Band Status
The fields in this section display the status for upstream bands 0, 1, 2, 3, 4 (U0, U1, U2, U3, U4) and
downstream bands 1, 2, 3, 4 (D1, D2, D3, D4).
SNR margin This field displays signal-to-noise ratio margin for each upstream and downstream
bands. NA displays when the band is not used.
Signal
Attenuation
This field displays the signal attenuation status for each upstream and downstream
bands. NA displays when the band is not used.
Line Attenuation This field displays the line attenuation status for each upstream and downstream bands.
NA displays when the band is not used.
Transmit Power This field displays the transmission power for each upstream and downstream bands. NA
displays when the band is not used.
Receive Power This field displays the receiving power for each upstream and downstream bands. NA
displays when the band is not used.
VDSL Performance
This section displays current VDSL performance measured from the Switch (Vtuc) and CPE side (Vtur) for the
following three measurement durations.
• Since Link: This field displays the VDSL performance information recorded since the line was last up.
• Curr 15 Min: This field displays the VDSL performance information recorded in the last 15 minutes.
• Curr 1 Day: This field displays the VDSL performance information recorded in the past one day.
Full Inits This field displays how many full initialization attempts on the line (successful and failed)
there were.
Failed Full Inits This field displays the number of failed full initialization attempts on the line.
FECS This field displays the number of seconds at least one FEC (Forward Error Correction)
event occurred on this line.
ES This field displays the number of seconds the following events occurred on this line:
• The Switch: CRC-8, LOS, SEF or LPR value greater than or equal to 1 on the line.
• CPE side: FEBE, LOS-FE, RDI or LPR-FE value greater than or equal to 1 on the line.
SES This field displays the number of seconds during this interval that:
• The Switch: LOS, SEF or LPR value was greater than or equal to 1 or the number of
CRC-8 anomalies greater than or equal to 18 times on the line.
• CPE side: LOS-FE, RDI or LPR-FE value was greater than or equal to 1 or the number
of FEBE anomalies greater than or equal to 18 times on the line.
LOSs This field displays the count of 1-second intervals containing one or more Loss of Signal
(LOS) failures.
LOFs This field displays the count of 1-second intervals containing one or more Loss of
Framing (LOF) failures.
UAS This field displays the count of 1-second intervals for which the line is unavailable. Use
this to define this line tolerance to allow how long for a period of Unavailable Seconds
(UAS). Refer to ITU-T G997.1 chapter 7.2.1.1.5 for more detailed information.
Code Violation This field displays the number of code words containing one or more anomalies.
Corrected This field displays the number of code words containing one or more error blocks that
have been corrected.
Table 7 Status: VDSL Port Details (continued)
LABEL DESCRIPTION
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