Cindy wants to know if the Echo can work as an intercom all around the house. Leo says it can, but the Echo Dot requires external speakers, while the Echo has its own speaker. There's also the Echo Show, which also has video. She heard that it can make phone calls. Leo says it doesn't make phone calls, but it can make Echo to Echo calls to anyone in her network. If she wants to make phone calls, then Google Home is the way to go. It uses Google Voice.