Select a criterion for establishing terminal connection with the CS: “Sending period (min)” or “Packet size (kb)” (Figure 12). “Period of data transfer to CS (min)” — enter the number of minutes upon expiry of which the terminal must establish the connection with the communication server being in roaming. Recommended value of “Period of data transfer to CS (min)” — 180 minutes. Value range — from 2 to 65535. “Data packet size to transfer to CS (kb)” — enter the data packet size upon reaching which the terminal must establish the connection with the communication server being in roaming. Recommended value of “Data packet size to transfer to CS (kb)” — 100 kb. Value range — from 1 to 1024.