Nortel 4000 用户指南

3-23

Chapter 3    Determining RAC Status

Managing Remote Access Concentrators Using Annex Manager

The

Annex T1 Internal CSU Status

 window displays information in the

T1 Alarms, T1 Status

 and

Interval Information

 boxes. In addition, it includes the

Interval(s)

 field. You can enter information in this field. Like all RAC status

commands, you cannot change a RAC configuration from this window.

The T1 Alarms box provides both historical and current information about
T1 alarms. This box includes the following fields:

•

Blue History

 indicates whether a Blue alarm occurred since the

T1 Engine has been on-line. This field displays

True

 if an alarm

occurred or

False

 if an alarm did not occur.

•

Blue

 reports the current status of the Blue alarm.This field

displays

On

if the T1 engine is receiving AIS (all ones,

unframed) from the network, or

Off

 if the T1 engine is not

receiving AIS.

•

Red History

 indicates whether a Red alarm occurred since the T1

Engine has been on-line. This field displays

True

 if an alarm

occurred or

False

 if an alarm did not occur.

•

Red

 reports the current status of the Red alarm. This field

displays

On

if the T1 engine is detecting loss of frame

synchronization and is sending a Yellow alarm to the network.
The field displays

Off

 if the T1 engine is in frame

synchronization.

•

Yellow History

 indicates whether a Yellow alarm occurred since

the T1 Engine has been on-line. This field displays

True

 if an

alarm occurred or

False

 if an alarm did not occur.

•

Yellow

 indicates the current status of the Yellow alarm. This field

displays

On

 if the T1 engine is receiving a Yellow alarm from

the network or

Off

 if the T1 engine is not receiving a Yellow

alarm.