The SIM stores network state information, which is received from the Location Area Identity (LAI). Operator networks are divided into Location Areas, each having a unique LAI number. When the device changes locations, it stores the new LAI to the SIM and sends it back to the operator network with its new location.
Russia Technical Information - In Details. Russia Voltage. The voltage in Russia is 220 V which is the same voltage used in China, Greece, Russia, South Korea, and the United Arab Emirates. 220 V has an advantage over lower voltage such as the 110 V that it is cheaper to transmit.
In the classic Russian Stimulation, the 2500Hz is modulated (or burst) at 50Hz using 10ms ON and 10ms OFF periods (illustration C in the upper figure). The Ward and Shkuratova (2002) review also mentions several other reasonably early papers (i.e. before 2002) which have evaluated RStim.