Cabletron Systems CSMIM-T1, Руководство администратора, Страница: 267 / 418

Displaying T1 Internal CSU Status Information
CSMIM/Micro-CS Management Application Guide 17-27
❑
Localloop
to indicate that the T1 engine’s outoing signal is
looped back to the incoming side.
❑
Lineloop
to show that the incoming signal is looped to the
network without passing through the T1 engine.
❑
Payloadloop
to show that the incoming signal is lopped
through the T1 engine after it passes through the framing
function.
❑
Uptime
indicates the amount of time in minutes that the T1
engine has been up.
❑
Unit ID
identifies the T1 engine, using its firmware number,
firmware revision number, firmware release date, and EPROM
check sum.
❑
Serial Number
displays the engine’s number.
❑
Circuit ID
displays the engine’s circuit identification number.
Understanding the Interval Information Box
The
Interval Information
box provides T1 engine 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
.
❑
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.