Freedom from synchronization issues also is important in case of dropped connections. While intermittent network problems can seriously disrupt link encryption,packet-encryption devices can tolerate temporary signal loss.

• 万一连接中断时，不依赖于同步的问题也是很重要，间歇性的网络问题可以严重地破坏链路加密，而包加密装置可以容忍暂时的信号丢失。