Please, any help you can offer is appreciated. We haven't found a helpful Tec yet. There was a power outage and it seems to have affected our Nitsuko Portrait 824. First the voicemail stopped working, we can't retrieve our messages and then the voicemail didn't pick up. Now when calls come in, we can see the line light up but there's no ringer, and most recently, we can't answer the call either! Very frustrating! I'm only the secretary but I have been put in charge of solving the problem, so please help me!