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Spirent KB Article
Doc ID: FAQ13490
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Umetrix Voice: Which Method Should be Selected to Synchronize Umetrix Voice with the Audio Server?
Spirent recommends using GPS synchronization if the GPS is installed and running.
Enable GPS synchronization by selecting
Settings → GPS/Time
and setting the
If GPS is not installed, then synchronization can be done via internet provided the test PC is connected to the internet
Internet Time Server
Note that Internet Time Synchronization is not recommended during Voice Quality testing while drive testing. Substantial latency may be introduced when the internet time protocol operates in a mobile environment. GPS Time Sync is recommended in this case.
Product : Umetrix Voice