We have two tests that are currently available to demonstrate the stability and consistency of your connection. While speed helps, consistency is most important when it comes to supporting Voice over IP calls.
The most important test to run is the first one. It will ensure your firewall has the correct ports open to support VoIP traffic, and then it will simulate placing two VoIP calls. It also checks your connection's quality.
If there are issues with these results, then you may choose to run the second test, which will test speed and the route that traffic takes to reach us.
That said, below, please find the two tests:
If you need the link to download the BCS for a platform other than windows, click here.