在自动配置协议广泛流传开来之前，人们有时会手工配置计算机系统，以改用全双工操作，但另一台计算机依然会使用半双工操作。
Before the autonegotiation protocol was widely used, people would sometimes manually configure one system to use full duplex, but the other would use half duplex.
这种衍生的UTP电缆支持一种“自动配置协议”，允许两个以太网系统自行决定采用全双工抑或半双工操作。
The UTP Ethernet variants support an additional autoconfiguration protocol that allows two Ethernet systems to negotiate which speed to use, in full or half duplex mode.
它引入了WebSocket接口并且定义了一个全双工的通信通道，通过一个单一的套接字在Web上进行操作。
It introduces the WebSocket interface and defines a full-duplex communication channel that operates through a single socket over the Web.
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