Bay Networks Manager, User Manual

Page: 316 / 488

am.book : ch20 24 Tue May 6 13:24:47 1997
Annex Manager User Guide
Chapter 20 Displaying Status Information
20-24
Part 4 Control and Status Commands
Understanding the Status Box
The
PRI CSU Status
box displays statistics for the T1 network interface.
This box includes the following categories:
•
Sync
indicates whether the T1 engine is detecting frame
synchronization. This field displays
True
if the T1 engine is
detecting frame synchronization or
False
if the T1 engine lost
frame synchronization and entered the red alarm state.
•
Signal Loss
indicates whether the CSU is detecting pulses on the
T1 network interface receivers. If the engine is not detecting
pulses, the T1 line transmits AIS (all ones, unframed) on the T1
network interface. This field displays
True
when the engine is
not detecting pulses and
False
when it is detecting pulses.
•
Loopback Mode
indicates loopback status. This field can display:
–
NoLoop
to show that the signal is not looped through the T1
engine.
–
LocalLoop
to indicate that the outoing signal of the T1 engine
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 looped
through the T1 engine after it passes through the framing
function.
•
Unit ID
identifies the T1 engine, using its firmware number,
firmware revision number, firmware release date, and EPROM
check sum.