标准化无线电部分，即第1层，包括发送和接收DRSC通信协议的设备的媒体访问控制（MAC）的物理方面，如CEN 278对RTTT的定义。本ETS和ETS 300 683旨在成为一个统一标准，其参考文献将在参考EMC指令的欧洲共同体官方公报中引用。需要与CEN 278密切合作。

To standardise the Radio part i.e. layer 1 including the physical aspects of Medium Access Control (MAC) of the equipment transmitting and receiving the communication protocols for DRSC, as defined by CEN 278 for RTTT. This ETS, together with ETS 300 683, is intended to become a harmonised standard, the reference of which is intended to be cited in the Official Journal of the European Communities referencing the EMC Directive. Close cooperation with CEN 278 required.