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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:
System and Test Status screen
Highest priority Health and Status message on the last line of all screens
Network Interface Status screen
Network Performance Statistics screen
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