Cabletron Systems CSMIM-T1, Руководство администратора, Страница: 261 / 418

Displaying PRI Internal CSU Status Information
CSMIM/Micro-CS Management Application Guide 17-21
❑
Interval Number
lists each 15 minute interval for which statistics
appear in this box. This column displays a number from 1 to
96,
Current
, or
Total
.
❑
Out of Frame Errors
lists the number of Out of Frame (OOF) events
that have occurred. An OOF event begins when the network
interface sends two of four incorrect consecutive frame
synchronizing bits, and ends when reframe occurs.
❑
BiPolar Violations
lists the number of BiPolar Violation (BPV)
errors. For AMI-coded signals, a BPV event occurs when there
are two consecutive pulses of the same polarity. For
B8ZS-coded signals, a BPV event occurs when there are two
consecutive pulses of the same polarity that are not part of the
zero substitution code.
❑
CRC Errors
lists the number of CRC errors.
❑
Controlled Slip
lists the number of times the T1 engine replicates
or deletes a DS1 frame.
❑
Path Code Violations
lists the number of coding violations that occur
on the remote side of a Layer 1 connection.
❑
Line Code Violations
lists the number of coding violations that occur
on the local side. A Layer 1 connection does not need to be
established.
Understanding the Interval Errored Seconds Box
The
Interval Errored Seconds
box provides T1 line statistics in the following
categories:
❑
Interval Number
lists each 15 minute interval for which statistics
appear in this box. This column displays a number from 1 to
96,
Current
, or
Total
.
❑
Rec. Net. Alarms
(Receive Network Alarms) lists the number of
seconds with alarm events.
❑
Error Seconds
lists the number of seconds with one or more CRC
or OOF errors .
❑
Sev. Err. Seconds
(Severe Error Seconds) lists the number of
seconds with 320 or more CRC or OOF errors.