User`s manual

Chapter 4 Monitoring and Maintenance
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4.2.2 VCG LCAS
The web page allows user to check VCG status.
Figure 4-3 VCG LCAS
4.3 “Fault Monitor” Main function Group Description
This section introduces the sub-functions of “Fault Monitor” Main function. The
“Fault Monitor” main function includes “System Alarm” and “Alarm Log” functions.
Figure 4-4 The Sub-functions of Fault Monitor Main Function Group
Table 4-1 shows the alarm messages generated by the SDH, specifies their class
(Major or Minor), type (Alarm, Performance Monitoring and State), and explains
their meaning.
Table 4-1 SDH Alarm Messages
Message Description Corrective Actions Type Class
STM1_LOS Loss of signal 1. Check cable
connections to the link
connector.
2. Check line and/or
other communication
equipment providing the
link to the specified
Optical module.
3. Replace the Optical
Alarm Major