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Systems and methods for prerating communication events, such as telephone calls, for prepaying customers are described. The systems and methods permit, at the beginning of a communication event, the determination of a time limit for the event based on the available balance in a prepayment account as

Systems and methods for prerating communication events, such as telephone calls, for prepaying customers are described. The systems and methods permit, at the beginning of a communication event, the determination of a time limit for the event based on the available balance in a prepayment account associated with the event.

대표청구항 ▼

Systems and methods for prerating communication events, such as telephone calls, for prepaying customers are described. The systems and methods permit, at the beginning of a communication event, the determination of a time limit for the event based on the available balance in a prepayment account as

Systems and methods for prerating communication events, such as telephone calls, for prepaying customers are described. The systems and methods permit, at the beginning of a communication event, the determination of a time limit for the event based on the available balance in a prepayment account associated with the event. 809-813 (Sep. 4-7, 1989). Wan, K.W. et al., "Extended Variances and Autoregressive/Moving Average Algorithm for the Measurement and Synthesis of Oscillator Phase Noise," Proceedings of the 43rdAnnual Symposium on Frequency Control, IEEE, pp. 331-335 (1989). Wan, K.W. et al., "Wideband Transhorizon Channel Sounder at 11 Ghz," Electronics Division Colloquium on High Bit Rate UHF/SHF Ch