One of the most important factors in ensuring call quality over VoIP systems is the speed with which your network allows you to pass information back and forth across a connection. This is often referred to as latency. Poor latency results in choppy or unintelligible audio, as well as "echoes" on calls.
In order to test the latency of your internet service to Telzio's system, you can use our built-in ping test here.
The maximum recommended ping time for using Telzio to place voice calls is 150 ms. If your ping tests out at higher than 150ms, you will need to contact your internet service provider to determine the cause of the problem.