System information

Chapter 6 Performance Management IPmux-8/16 User’s Manual
6-10 Viewing E1/T1, E3/T3 Port Statistics
Table 6-4. Current Data Parameters – E1/T1 (Cont.)
Parameter Remarks
SES Severely Errored Seconds
320 or more CRC error events, one or more SEF (OOF), or AIS. OOF defect is the
occurrence of framing bits error
UAS Unavailable Seconds
Number of seconds that the interface is unavailable. The system is unavailable after 10
continuous SES.
DM Degraded Minutes
A Degraded Minute is determined by collecting all of the Available Seconds, removing
any Severely Errored Seconds and grouping the result in 60-second groups (1 minute).
A Degrated Minute is such a group that the cumulative errors during the seconds within
the group exceed 1x10
-6
LCV Line Code Violation
For T1:
The sum of BPV and EXZ defects that occurred in a second.
BPV is the occurrence of a zero string greater than 15 (for AMI) or 7 (for B8ZS).
EXZ is the occurrence of a pulse of the same polarity as the previous pulse.
For E1:
Count the number of code violations (two consecutive bipolar violations of the same
polarity)
Note: The LCV alarm, appears as Unknown in the Active Alarms List.
AR% Availability Ratio
(900-UAS)/900
• BESs and DMs are valid when Line Type is CRC or ESF.
• FEBE counter is supported if the Port is E1 and Line Type is CRC-MF.
• LOMF counter is supported if the Port is E1 and Line Type is CRC-MF or MF.
Table 6-5. Current Data Parameters – E3/T3
Parameter Possible Values / Remarks
Slot 3, 4
Port CH1
Type E3, T3
Current Data Each parameter displays the number of seconds of that particular type of error
encountered by the E1/T1 interface during the current 15-minute interval
Time Elapsed (sec) Amount of time that has passed since the beginning of the current 15-minute
interval
0..899
Notes