Polycom vx310 line unregistered error when power or network goes out.
I have 10 Polycom vx310 phones and AT&T DSL at our office. About twice a week when we come into the office all the phones have the "X" line unregistered error and it requires multiple reboots of the phones to get them to work. I think either the power is going out or the network connectivity is going out and the phones are not reconnecting or something like that....It's very frustrating. Any suggestions on how to diagnose or fix this?