My internet connection is plugged into a Apple Airport Extreme. The SPA-942 phone is plugged into an ethernet jack in my wall. That ethernet jack is connected to one of the ethernet ports in the back of the Apple Airport Extreme. Also, I have a Static IP internet connection.
I recently setup a SPA-942 phone to a RingCentral number. The phone has worked fine for the past 2 weeks. It has received calls and dialed calls without an issue. The phone is running the latest firmware, 6.1.5(a). However, the other day the phone's LED light changed from green to orange. I have not touched anything in the phone's settings since the first day I setup the phone. I checked the admin panel for the phone and the "Registration State" says "FailedAuthentication". I have searched the internet for a resolution and I keep coming up empty.
I'm very confused on why the phone is not working anymore and would appreciate help on resolving this matter.