Phone connectors are electrical connectors used to connect phones and other electronic devices such as computers and audio equipment to each other or to an external source of power. They typically consist of two contacts, a male and female connector, with the female connector being smaller. Phone connectors are usually wired using twisted-pair wires, but can also be wired using coaxial cables. Depending on the application, phone connectors come in a variety of sizes and shapes, including RJ45, RJ11, UTP, and BNC connectors.