FlexDSL ORION 2 - G826> Command

User Manual NTU Orion 2
58
4.6.3.4 <G826> command
The <G826> command displays the ITU-T G.826 performance parameters of the line.
Depending on the number of DSL channels in the system, a table is displayed containing 1, 2 or
4 columns of data.
CO_PM>G826
----------------------------------------------------------------------
G.826 Error Performance : CRC6 1
----------------------------------------------------------------------
Errored blocks : 00000000
Errored seconds : 00000000
Severely errored seconds : 00000000
Background block errors : 00000000
ESR [%] : 0.00
SESR [%] : 0.00
BBER [%] : 0.00
Available time : 00000123
Unavailable time : 00000012
----------------------------------------------------------------------
CO_PM>
Option: С – update the table continuously.
Definitions:
CRC6: – Cyclic redundancy check indicating errored blocks received on the xDSL side;
Errored Block (EB): – A block in which one or more bits are in error. The transmission duration
of one block is 6 ms;
Errored Second (ES): – A one second period with one or more errored blocks or at least one
defect;
Severely Errored Second (SES): – A one-second period, which contains more than 30% of
errored blocks per second from the total number of all blocks received. SES is a subset of ES;
Background Block Error (BBE): – An errored block not occurring as a part of SES.
Errored Second Ratio (ESR): – The ratio of ES to total seconds in available time during a fixed
measurement interval;
Severely Errored Seconds Ratio (SESR): – The ratio of SES to the total number of error-free
seconds in available time during a fixed measurement interval;
Background Block Error ratio (BBER): – The ratio of BBE to the total number of error-free
seconds in available time during a fixed measurement interval;
Available time: – The period when measurements of the parameters are possible;
Unavailable time: – The period when the measurements of the parameters are impossible.