Alcatel Speed Touch 591s, Technical User'S Manual

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15 — Statistics
Speed Touch 591s Technical Practices 15-13
February 2001 90-8785-01
Displaying E1 port AAL1 statistics
The statistics available are the same as those for the V.35/X.21 version of the Speed
Touch 591s; refer to Table 15-1. The procedure for displaying E1 port statistics is the
same as the one for displaying T1 port statistics; refer to section 15.3 for details.
Displaying E1 port physical statistics
The physical statistics that can be displayed for the E1 port fall into two
categories—G.821 statistics and line error statistics. Table 15-4 lists available
statistics.
Table 15-4 Physical statistics for the E1 port
Note — Certain statistics are not displayed when the E1 port is
configured for basic unstructured data transfer mode.
Layer Field Description
G.821 Errored Seconds Number of seconds for which the average BER was greater
than 0 but less than 10
-3
and loss of sync was not detected
Severely Errored
Seconds Number of seconds for which the average BER was greater
than 10
-3
or a loss of sync was detected
Unavailable Seconds Number of seconds for which the link was in the unavailable
state, not including the 10 severely errored seconds
preceding the unavailable state
Bursty
Errored Seconds Number of seconds with more than one CRC error when CRC
is enabled and more than one LCV error when CRC is
disabled
Loss of
Frame Counts Number of times an LOF condition occurred
Controlled
Slip Seconds Not used for the E1 port; always reads n/a
Valid
15-min Intervals Number of statistics collection intervals that were successfully
completed over the past 24-h period
Line
error Line Code Violations Number of occurrences of either a BPV or EXZ error event
Far End Block Errors Number of far-end block errors received
Frame Alignment
Signal Errs Number of incorrect framing alignment patterns received
CRC4 Errors Number of incorrect CRC4 blocks received