Originally two AAL types, AAL types 3 and 4, were combined in support of both connection-oriented and connectionless traffic.Examples include X.25 packet and Frame Relay traffic.
英
美
- 最初的两种AAL类型,AAL类型3和类型4组合在一起支持面向连接和无连接传输业务,例如,X.;25信息包和帧延时传输。