GSM protected case. This is the case where it is not necessary to examine which technology (GSM or broadband system) is used in the affected country. Frequencies of a broadband base station may be used if the mean field strength of each carrier produced by this base station does not exceed the 39 dBµV/m/5 MHz (trigger value) at a height of 3 m above ground at the border line between two affected countries. The above trigger value shall be modified according to channel bandwidth (see section 4.3).
