该计费系统的设计目标是为了计算并收取园区网络中用户的各种网络费用。它支持对IP流量、拨号流量、E-MAIL流量的统一计费，根据流量的不同类型采取不同的计费价格，并支持对用户收取其他各种费用，如服务费、保修费、月租费等。对于既有IP地址，又有拨号帐号、EMAIL帐号的用户，系统可以对用户的各种费用统一计算、统一管理。用户的交费既可以采取“先使用后交费’的方式，也可以采取“先交费后使用”方式。 The billing system is designed to calculate and receive the various network costs of users in the campus network. It supports unified accounting of IP traffic, dial-up traffic, E-MAIL traffic, different billing rates according to the different types of traffic, and supports the user to charge other various fees such as service fee, warranty fee, monthly fee Wait. For users who have both an IP address, a dial-up account, and an EMAIL account, the system can uniformly calculate and manage all the user fees. The user’s payment can take the “first use of post-paid” approach, you can also take the “pay first use” approach.