求翻译：广域网数据链路层协议描述了在单一数据链路中帧是如何在系统见传输的。其中包括为运行点到点、点到多点、多路访问交换业务如帧中继等设计的协议。是什么意思？

WAN data link layer protocol describes a single data link frame is in the system see the transmission. Including the exchange of services such as Frame Relay protocols designed to run point-to-point, multipoint, multi-channel access.

Wide Area Network Data Link layer protocol describes the data in a single frame is in the link to see the system of transmission. These include the operating point to point, point-to-multipoint, multi-access Exchange business such as Frame Relay, and the protocol design.

How did the WAN data link layer agreement describe the frame sees the transmission in the sole data link in the system.In which including for moves point-to-point, point-multipoint, design and so on multi-channel visit exchange service like frame relay agreements.

Wan data link layer protocol describes how the frames in a single data-link system, see transfer. Including running the point to point, point to multi-point, multi-channel access Exchange business designs, such as frame relay protocols.

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