User's Manual Part 2

Nomad User’s Manual Chapter 9 Voice Quality Configuration Options
Copyright © Spirent Communications, Inc. 2013 133
The test sequence starts with Handset 1 sourcing audio to Handset 2. Assuming Alternate
channels after each cycle has been selected, in the next cycle Handset 2 will source audio
to Handset 1.
The Average Delay and Median Delay will be plotted for each direction on the Delay
Times (ms) / Cycle chart.
Detailed statistics for each test cycle are available in the Cycle History area.
Figure 9-15 - Voice Delay Testing
While monitoring the data during testing, be mindful of the following:
Confirm that each individual cycle has completed and that Nomad has reported data.
Confirm that the Delay Times chart updates for each cycle.
The test will stop after the configured number of Cycles has been completed. Alternatively, use the
Stop button to end the test at any time as desired.
Delay test results can be found on the Delay Performance Summary tab of the output report.
Note: Delay measurements greater than 250 milliseconds round-trip are considered “high” and are
generally detectable during standard conversation.