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US08644469B2 Methods, systems, and products for monitoring service usage 失效
用于监控服务使用的方法,系统和产品

Methods, systems, and products for monitoring service usage
Abstract:
Usage information is received that describes usage of communication services by a communications device. The usage information is compared to monitoring criteria. When the monitoring criteria is satisfied, an electronic notification message is sent to the communications device. The electronic notification message when a communications service is initiated and before an additional charge for the communications service is incurred.
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