A prepaid communications system includes a wireless call handling device for receiving wireless calls from wireless customers, a packet data serving node for receiving wireless packet data calls from the wireless call handling device and transmitting the calls to a communications network and an administration system in communication with the packet data serving node. Upon a wireless customer originating a wireless call, the wireless call handling device receives the wireless call and transmits the wireless call to the packet data serving node. The packet data serving node accesses the administration system with identification information input by the customer to obtain a call access authorization for the customer. The administration system transmits the call access authorization to the packet data serving node, the call access authorization including a prepaid volume record indicating an amount of prepaid units available for use by the customer and processing instructions. The packet data serving node then enables the wireless call to proceed on the communications network while monitoring the wireless call and decrementing the available prepaid units from the prepaid volume record associated with the customer. Upon the available prepaid units reaching a predetermined level, as indicated in the processing instructions, the packet data serving node notifies the administration system that the predetermined level has been reached, and the processing instructions are executed.