Phone Backlight Comes on Every 30 Minutes
I have FiOS Digital Voice service. Exactly every 30 minutes (at :25 and :55 after the hour), my phone backlight lights up like a call is coming in. I have a GE28821 DECT phone system. I tried plugging the base into a different jack and the same thing happens. Phone doesn't have to be in the base to light up, it can just be lying on the table. What is the ONT doing exactly every 30 minutes that's causing my phone backlight to light up? Is there anything that can be done about this (other than telling me to get a different phone system)?