ETHERLINK II - Repeater
Manual
Page 58 of 106
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.
RR_01_PM>G826
--------------------------------------------------------------------------------
G.826 Error Performance : CRC6 1 CRC6 2
--------------------------------------------------------------------------------
Errored blocks : 0000000000 0000000000
Errored seconds : 0000000000 0000000000
Severely errored seconds : 0000000000 0000000000
Background block errors : 0000000000 0000000000
ESR [%] : 0.00 0.00
SESR [%] : 0.00 0.00
BBER [%] : 0.00 0.00
Available time : 0000005722 0000005685
Unavailable time : 0000000028 0000000065
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RR_01_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.
4.6.3.5 <RESETG826> command
The <RESETG826> command clears the ITU-T G.826 error performance parameter counters.
