I tried for about an hour and a half last night to call my mother and got a busy signal. Didn't think too much about it, because she could have been on her dial-up computer or talking long distance to friends or relatives. At lunchtime today, I tried again a few times, still getting a busy signal. I called my aunt who lives in the same retirement community, but in a different court, and she said she'd had the same experience. She'd called two other people in my mother's court and also gotten busy signals, so we suspect it's because of the installation of the new phone system. In any case, I'm going straight to Mom's when I leave here in 10 minutes, which is what I wanted to set up with her by phone in the first place.