A telephone booth, telephone kiosk, telephone call box or telephone box is a small structure furnished with a payphone and designed for a telephone user's convenience. In the USA, Canada and Australia, "telephone booth" is used, while in the UK and the rest of the Commonwealth it is a "telephone box" or "phone-box". Such a booth usually has a door to provide privacy and a window to let others know if the booth is in use. The booth may be furnished with a printed directory of local telephone numbers, and a booth in a formal setting such as a hotel may be furnished with paper and pen and even a seat. An outdoor booth may be made of metal and plastic to withstand the elements and heavy use, while an indoor booth (once known as a silence cabinet) may have more elaborate architecture and furnishings. Most outdoor booths feature the name and logo of the telephone service provider.