In the General Purpose Parameters section (near the bottom of the page):
Set ‘GPP A’ to 125
Scroll down to the bottom of the page and click the button [Submit All Changes]
*Your phone will restart 1 or more times while the Device is re-provisioned to the new settings. During this time your screen will go blank and the Line Indicator lights will flash. When the device is ready, the Line1 indicator light should be Green.
Step 4 - Configure Wi-Fi Settings
If you need Wi-Fi, please visit our support article to assist how to configure to your Wi-Fi network: