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4-1
7510-A2-GB20-10
November 1997
Monitoring the DSU
4
What to Monitor
This chapter presents information on how to access and monitor DSU status and
performance statistics on the DDS network. You can monitor DSU operations by
viewing:
H System and Test Status screen
H Highest priority Health and Status message on the last line of all screens
H Network Interface Status screen
H Network Performance Statistics screen
H LEDs on the ATI Status screen or the DSU’s front panel
Table 4-1 shows the available indicators of alarm conditions on the network
interface and the User Data port.
Table 4-1. Alarm Indicator Locations
Alarm Condition
Status
Screen
Specific
LED
Crossed Pairs Y N
No Signal (NS) Y Y
Out of Service (OOS) Y Y
Out of Frame (OOF) Y Y
Excessive Bipolar Violations (BPV) Y N
Inband Framing Error Y N