4. Monitoring the Card
8799-A2-GB20-10
April 2003
4-15
Viewing Current DSL Performance
The Current DSL Performance Statistics screen allows you to monitor selected
current DSL port status and error information for both the near- and far-end cards
from a single screen.
To view Current DSL Performance for a port, follow this menu selection sequence:
Main Menu
→
Status
→
Performance Statistics
→
Current DSL Performance
The following DSL Performance Statistics are collected for the selected port:
Margin:
The margin level calculated from the Signal to Noise Ratio (SNR)
measured minus the SNR reference. The SNR reference is the value needed
to maintain a bit error rate of 10
-6
.
Attenuation:
The number of dB that the signal has fallen below a reference
point.
Tx Power:
The transmit power level.
The following Current DSL Performance Statistics are collected for the selected
port:
ES (Errored Seconds):
Seconds during which one or more Cyclic
Redundancy Check (CRC) errors or Loss of Sync Word (LOSW) defects has
occurred. Maximum value is 900.
SES (Severely Errored Seconds):
Seconds during which 50 or more CRC
anomalies or one or more LOSW defects has occurred. Maximum value
is 900.
UAS (Unavailable Seconds):
Seconds during which the SHDSL line is
unavailable. The SHDSL line becomes unavailable after 10 contiguous SES.
Maximum value is 900.
main/status/performance/current
Slot: 4: Model: 8799
Port: 3
CURRENT DSL PERFORMANCE STATISTICS
Payload Rate: 1536 Kbps
Current Interval Timer: 002 DSL Line Rate: 1544 Kbps
-------------------------------------------------------------------------------
Near End Far End
Margin 02 01
Attenuation 03 03
Tx Power 02
ES 002 000
SES 002 000
UAS 000 000
LOSWS 000 000
-------------------------------------------------------------------------------
Ctrl-a to access these functions, ESC for previous menu MainMenu Exit
ClrNear ClrFar
Select: 1, 2, 3, 4, 5, 6, 7, 8. LOS at DSL, Pt 2
