Prepaid security cellular telecommunications system

A wireless telecommunications system, comprising, in combination:

• (a) a plurality of wireless radiotelephones each having a predetermined subscriber telephone number;
• (b) at least one public switched telephone network;
• (c) at least one wireless carrier;
• (d) at least one wireless switch in communication with at least one public switched telephone network;
• (e) at least one host computer in communication with said at least one wireless switch;
• (f) a processor resident in the wireless switch for receiving signals from both the at least one public switched telephone network and the wireless carrier and sending signals to both the at least one public switched telephone network and wireless carrier;
• and (g) a processor resident in the at least one host computer that accepts and evaluates a subscriber database comprising a plurality of records representing subscribers to the wireless telecommunications system and including pre-paid account balance information for each subscriber, wherein the host computer receives an alpha-numeric value corresponding to a set value of airtime to be added to a prepaid subscriber account balance, the alpha-numeric value allowing a set value of air time to be added to the prepaid subscriber account balance.