Nortel Voip Phones I Have A VOIP From Nortel Networks That Continues To Give Me Server Errors And Disconnects Me.?

I have a VOIP from Nortel Networks that continues to give me server errors and disconnects me.? - nortel voip phones

I wonder if anyone else have the same problem with the network program, with Nortel, and if you have a solution? I have a high-speed DSL and the system will be shut down at certain times of the day, but sometimes it is working well. You have to help with a proposal to my VOIP perspective smoothly?