In the Bluetooth system, the core protocols stack are composed of BaseBand, Link ManagementProtocol, Logical and Link Controller Adaption protocol and Service Discover protocol.
包括基带协议、链路管理协议、逻辑链路控制和适应协议以及设备发现协议，组成了蓝牙系统的核心协议栈。
The network stack, by design, follows a layered architecture modeled after the protocols themselves.
网络堆栈在设计上遵循模拟协议本身的分层体系结构。
Let's take a look at two simple protocols in the stack used to send data, RFCOMM and OBEX, and compare the advantages and disadvantages of using them when transferring files.
我们先来看看栈中用来发送数据的两个简单协议RFCOMM和OBEX，并比较使用它们传送文件的优势和不足。
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