L2CAP protocol levels L2CAP协议层
Above the L2CAP layer, the remaining layers of the Bluetooth protocol stack aren't quite so linearly ordered.
在L2 CAP层之上，蓝牙协议栈中剩下的层没有很好的线性排列。
You can think of a channel as a logical representation of the data flow between the L2CAP layers in remote devices.
你可以把通道想象成两个远程设备的L2 CAP层之间的数据流的逻辑形式。
An SDP client communicates with an SDP server using a reserved channel on an L2CAP link to find out what services are available.
SDP客户端使用L2CAP链接上的保留通道与SDP服务器通信，来发现哪些服务可用。
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