Hi Stacy,

I have only ever seen this one before, it was when i was plugging something into a power board the UC-500 was plugged into, needless to say i fried the board and the UC-500 had a very bad shutdown (It was a LAB system).

I have seen many UC's go down due to power outages, and not once seen them loose their information, but i am curious when you say that the customer lost power for an extended period of time, did the power ever come on and of say more then a couple of times during this period? I have heard but not seen it myself, when Power outages also turn into Brown outs I.E power comes up then fades away and sharpley comes back on before it completly dies down, the UC's loose their running configuration.

But as i said i can not completly qualify the those situations as i did not experience them first hand.

I would highly recommend that you place any UC-500 onto a UPS even if it is a bottom fo the range cheap one, if not for anything else but to just filter the power coming into the unit, if you choose a good quality one you can actually run the unit for a considerable amount of time, which can keep the customer happy as their phones will still be working (We also suggest they unplug some phones to reduce the PoE output as well).

Also, it is a good idea to now and then use the CUE GUI to make a backup of the CUE and its contents, regular maintance on this can save alot of information and can also assist with disaster recovery. Also make a backup of your running configuration file and store it onto the Flash Card on the UC to allow you to do a quick restor if this problem happens again.

I hope TAC assist you and get to the bottom of the problem, if you do get some resolution to this please share it with us.

Cheers,

David.