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SZ-DOC-W5-1.pdf LTU/NTU
Version: 1.5 Operating Manual
47 Revision: 2002-09-10
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
LTU_01_PM>
Definitions:
1. CRC6: Cyclic redundancy check indicating errored blocks, are being received on the local
DSL side.
2. Errored block (EB): A block in which one or more bits are in error.
3. Errored seconds (ES): A one second period with one or more errored blocks. SES defined
below is a subset of ES.
4. Severely errored second (SES): A one second period which contains >=30% errored blocks.
5. Background block error (BBE): An errored block not occurring as part of an SES.
6. Errored second ratio (ESR): The ratio of ES to total seconds in available time during a fixed
measurement interval.
7. Severely errored second ratio SESR: The ratio of SES to total seconds in available time during
a fixed measurement interval.
8. Background block error ratio (BBER): The ratio of errored blocks to total blocks during a fixed
measurement interval, excluding all blocks during SES and unavailable time.
Options
:
C: Updates the G.826 parameters continuously
E1: The G826 E1 command displays the ITU-T G.826 error performance parameters on the
E1 2Mbit/s side. This command is only available if framed mode is enabled.
If CRC4 mode is on, the following parameters are displayed:
LTU_01_PM> G826 E1
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
G.826 Error Performance : CRC4 E-Bit
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Errored Blocks : 00000000 00000000
Errored seconds : 00000000 00000000
Severely errored seconds : 00000000 00000000
ESR [%] : 0.00 0.00
SESR [%] : 0.00 0.00
BBER [%] : 0.00 0.00
Available time : 00524129 00524129
Unavailable time : 00000024 00000024
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
LTU_01_PM>
If CRC4 mode is off, the following parameters are displayed:
LTU_01_PM> G826 E1
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
G.826 Error Performance : FAS
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Errored blocks : 00000000
Errored seconds : 00000000
Severely errored seconds : 00000000
ESR [%] : 0.00
SESR [%] : 0.00
BBER [%] : 0.00
Available time : 00009841
Unavailable time : 00000024
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
LTU_01_PM>
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