Someone I don't know, such as a landline phone, calls in, and then no one talks, just playing music. You're a little confused. I don't know what's going on. In fact, if you listen any longer, someone will talk on this phone. It should also be a sales phone or a group broadcast phone. Everything is a kind of propaganda phone, let the phone hang up directly, and you don't need to communicate with them, because they are all junk phones and have no good intentions for you. What's more, if the phone is dialed repeatedly, it can be put there after it is connected. Anyway, you don't have to spend the phone bill, so he will take his time.