Changing Server Domain in Xlite
Step 1: Open the X-Lite program.
Step 2: Select the left button at the top > Select "SIP Account Settings"
Step 3: New window will pop up > Click on "Properties" on the right side
Step 4: In the field of "Domain" change the address to the one that you have been provided for your account
Step 5: Click "Apply" and then "OK" when complete, to save changes
Step 6: Xlite will now re-register itself with the new "Server Address".
You should now be able to login and take calls as normal.