Based on the technical analysis of the connection betWeen lP protocol layer and lOwer protOCOl layer, aninterface between lP and PRN is described in detail, some appropriate commands are added and a series Of procures are designed.

• 通过对IP层到低层协议接口的分析，给出了PRN协议层到IP协议层的界面的描述，设计了实现界面功能的命令和处理过程。