用于电信天翼3G无线网卡使用计时。不小心超时使用，收费很高，开发此计时器的目的是实时掌握用户已用时间与流量。-For Telecom Tianyi 3G wireless network card to use timing. Careless use of overtime, high fees, the development of this timer is real-time user has been used time and traffic.