It analyses the SET protocol, describes the whole procedure of secure data transmission.
分析SET协议，描述了SET协议中安全数据传输的整个过程。
When considering data transmission techniques, you must take into account several factors: feature set, compatibility, performance, and direction (to or from the server).
在考虑数据传输技术时，你必须考虑这些因素：功能集，兼容性，性能，和方向(发给服务器或者从服务器接收)。
When the time is expressed as a function of various data rates, the optimum set of data rates for concurrent user groups to achieve minimum transmission time can be derived.
对于多媒体业务，当我们让传输时间是可变数据速率的函数时，该方案即可找出当前用户组的最优数据速率集，以使系统的传输时间最小。
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