Fiber-to-the-x, or (FTTx) refers to a variety of broadband network architectures. It utilizes optical fiber to transmit data over long distances. Fiber optic cables are often chosen over copper cabling for consumer data transmissions, because copper cannot carry data at high speeds in traditional telephone lines. Fiber cabling into buildings is the fastest method of transmission. Standard coaxial and ethernet cables can easily be attached to the end. Various configurations exist in FTTx: FTTH (fiber-to-the-home); FTTP (fiber-to-the-premises); FTTB (fiber-to-the-building, -business, or -basement); FTTD (fiber-to-the-desktop); FTTO (fiber-to-the-office).