The basic requirements for booths for simultaneous interpretation are specified in ISO 2603. This International Standard is an adaptation of ISO 2603 to meet the needs of transport and handling of mobile booths to be used in halls not equipped with built-in booths. The main features of mobile booths, distinguishing them from built-in facilities, are that they can be dismantled, moved and set up inside a conference room. Booths that can be moved but are used on the premises and stored near conference rooms are not covered by this International Standard. They should be designed to conform as closely as possible to built-in booths as specified in ISO 2603.