So here's an odd thing
A while back (months ago) I noticed I had a cricket in my bedroom. It only made its little chirrup now and again, so I wasn't sure. Then it dawned on me that the sound was coming from the phone by my bed. Later I noticed that it tended to happen about 5 in the morning. The sound was so quiet that I'm sure I wouldn't hear it if I were asleep. That was pretty odd and I wondered what it could be. This morning while I was making my bed, there was a ghost ring from the phone. Very, very quiet. I thought maybe something was wrong with the ringer, picked up the phone and said "Hello?" At which point there was a quiet hanging up sound. I bought the phone from the thrift store several years ago just to have a phone for the upstairs. I have no idea what was going on this morning, but I went out and bought a new phone from Walmart and threw the other one away.