Have your client use this to testing tool when planning to add new phones to a network.

This Online Testing Utility will open a socket-connection to your browser and pass simulated VoIP Traffic to your home/office computer. This test measures the quality and performance of your Internet connection between your home/office network and the 8×8 servers. Enter the appropriate data below and click Apply and Test.

Send them this link to test from a local connection http://voiptest.8×8.com/

Redirection to new page will take place.