被動模式下激活協議的流程如下圖 Figure 24 — Activation protocol in Passive communication mode
主動模式下激活協議的流程如下圖 Figure 25 — Activation Protocol in Active communication mode
被動模式下激活協議的流程如下圖 Figure 24 — Activation protocol in Passive communication mode
主動模式下激活協議的流程如下圖 Figure 25 — Activation Protocol in Active communication mode
https://blog.csdn.net/kangear/article/details/50924601