Alcatel Speed Touch 591s Technical User's Manual page 157

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.
Layer
G.821
Line
error
Speed Touch 591s Technical Practices
February 2001 90-8785-01
Certain statistics are not displayed when the E1 port is
Note —
configured for basic unstructured data transfer mode.
Table 15-4 Physical statistics for the E1 port
Field Description
Errored Seconds Number of seconds for which the average BER was greater
than 0 but less than 10
Severely Errored Number of seconds for which the average BER was greater
Seconds than 10
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 Number of seconds with more than one CRC error when CRC
Errored Seconds is enabled and more than one LCV error when CRC is
disabled
Loss of Number of times an LOF condition occurred
Frame Counts
Controlled Not used for the E1 port; always reads n/a
Slip Seconds
Valid Number of statistics collection intervals that were successfully
15-min Intervals completed over the past 24-h period
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 Number of incorrect framing alignment patterns received
Signal Errs
CRC4 Errors Number of incorrect CRC4 blocks received
-3
and loss of sync was not detected
-3
or a loss of sync was detected
15 — Statistics
15-13