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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 Source to GPS.
  • If GPS is not installed, then synchronization can be done via internet provided the test PC is connected to the internetSet the Source to 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