Home networks allow multiple devices in a home to be connected. This saves money and provides conveniences by allowing sharing of resources. There are three main types of wired home networks - Ethernet, power line cable, and phone line networks. Ethernet networks require cables connecting devices to a central hub, which may require running cables through walls. Phone line networks use existing telephone lines, while power line networks use existing electrical lines without additional wiring. Wireless networks also exist, including Home RF and Wi-Fi networks, but they can have interference issues from walls and other devices.