Well after a lot of huffing and puffing, I finally got through to a tech who knew what he was doing. He performed a thorough diagnostic check on my device and concluded that the ATA is bad. What puzzles me is that before Friday evening when the outage began, the ATA worked fine. Now they are telling me I need a new ATA. Something is rotten in Denmark here.
PS: HE also tried several software updates which did not work either.