保护与双模终端相关的无线电和网络安全。本EN将与其他标准和TBR一起构成TBR 39第二版（转换为协调EN 301 439 v1.2.x）的基础，即基本双模终端，仅由DECT art和GSM部分组成，可在DECT和GSM模式之间自动切换。（将在TR（DTR/DECT-010096）中考虑进一步集成DECT和GSM部件的高级双模终端。同样的考虑也适用于双模DECT/DCS1800终端和DECT/GSM/DCS1800双模/双频终端。术语GSM被认为涵盖所有频段，以及GSM类设备允许的频段组合，即:。 e、 P-GSM、e-GSM、R-GSM、DCS1800或双频GSM/DCS。参考文件:ETSs 300 175/176/444/824/434-1；EN 301 242；TR 101 072；DTR/DECT-010060，TBRs 6、10、22、39第1版GSM 02、03、04、06和08系列；ETS 300 607；TBR 19,20,31,32

To secify radio and network aspects related to dual-mode terminals. This EN will, in conjuction with other standards and TBRs, form the basis for the second edition of TBR 39 (converted to Harmonized EN 301 439 v1.2.x), i.e. basic dual-mode terminals that only consist of a DECT art and a GSM part and that may automatically switch between DECT and GSM modes. (Advanced dual-mode terminals, where the DECT and GSM parts are further integrated, will be considered in a TR (DTR/DECT-010096). The same considerations apply for dual-mode DECT/DCS1800 terminals and for DECT/GSM/DCS1800 dual mode/dual band terminals. The term GSM is considered to cover all the frequency bands, and combinations of frequency bands allowed for GSM type equipment, i.e. P-GSM, E-GSM, R-GSM, DCS1800 or dual band GSM/DCS. Reference documents: ETSs 300 175/176/444/824/434-1; EN 301 242; TR 101 072; DTR/DECT-010060, TBRs 6, 10, 22, 39 Ed 1 GSM 02, 03, 04, 06 and 08 series; ETS 300 607; TBRs 19,20,31,32