Finisar Surveyor - Manual (Page 202)

9-18
Surveyor
User’s Guide
Alarm Example, VoIP Calls
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Figure 9-9. Alarm Example, Call Jitter and Call Setup Time
This example shows an alarm group consisting of four alarms: Call Setup Time, Call
Jitter, severe Call Jitter, and User R-factor. When an alarm threshold for any of these
four alarms is exceeded, Surveyor issues an audible alarm and displays a message in
Surveyor’s
Message window.
The Severity setting instructs Surveyor to include Warning message when the call
jitter exceeds 200ms. A Critical message is included with all alarm messages when
the call jitter exceeds 500ms, plus instructions to Surveyor to stop and save frame
contents to a capture file. For the R-factor alarm, the alarm triggers when the User
R-factor value drops below the threshold value.
Two alarms are set for the jitter alarm variable. You can use the same variable to
create multiple alarms. Each alarm is defined by a single row in the table.