Polycom VVX 300/310 Strange Error

Hi guys,

Twice my phone has gone into a weird mode. The icon next to my name changes to and X and in the corner where the date appears it flashes a triangle with an ! I still have a dial tone but my calls go directly to voicemail. And I haven’t been pressing anything on my phone. To fix it I just unplug and then replug my phone but my concern is that I don’t notice when it happens and I may end up missing calls. Not finding anything like this in the manual or on Google. Any help would be greatly appreciated.

Thanks so much!

is your phone remote meaning outside the firewall?