ZyXEL Communications VES1724-56 User Manual page 61

Table 7 Status: VDSL Port Details (continued)
LABEL
Actual INP
against REIN
RS CW per DTU
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
Signal
Attenuation
Line Attenuation This field displays the line attenuation status for each upstream and downstream bands.
Transmit Power
Receive Power
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
Failed Full Inits
FECS
ES
SES
LOSs
LOFs
UAS
Code Violation
Corrected
VES1724-56 User's Guide
DESCRIPTION
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.
This field displays the number of Reed-Solomon codewords per DTU (Data Transfer Unit).
This field displays signal-to-noise ratio margin for each upstream and downstream
bands. NA displays when the band is not used.
This field displays the signal attenuation status for each upstream and downstream
bands. NA displays when the band is not used.
NA displays when the band is not used.
This field displays the transmission power for each upstream and downstream bands. NA
displays when the band is not used.
This field displays the receiving power for each upstream and downstream bands. NA
displays when the band is not used.
This field displays how many full initialization attempts on the line (successful and failed)
there were.
This field displays the number of failed full initialization attempts on the line.
This field displays the number of seconds at least one FEC (Forward Error Correction)
event occurred on this line.
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.
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.
This field displays the count of 1-second intervals containing one or more Loss of Signal
(LOS) failures.
This field displays the count of 1-second intervals containing one or more Loss of
Framing (LOF) failures.
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.
This field displays the number of code words containing one or more anomalies.
This field displays the number of code words containing one or more error blocks that
have been corrected.
Chapter 7 System Status and Port Statistics
61