建立链接并完成身份验证以后，PPP将启动网络控制协议(Net work Control Protocol,NCP)。

After establishing a link connection and completing authentication, PPP starts a Network Control Protocol (NCP).

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所有可编程控制器(plc)和处理器应采用植入目标链接(ole)的过程控制(opc)协议，以便与中央控制和数据处理系统的通讯。

All Programmable Logic Controllers (PLC) and Processors shall use Object Link Embedded (OLE) process control (OPC) protocol to facilitate communication to a central control and data processing system.

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在HCI层上是协议栈的高层。高层中的第一个是L2 CAP(逻辑链接控制和适应协议)层。L2 CAP主要承担。

Above the HCI layer are the upper layers of the protocol stack. The first of these is the L2CAP (logical link control and adaptation protocol) layer. The L2CAP is primarily responsible for.

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在HCI层上是协议栈的高层。高层中的第一个是L2 CAP(逻辑链接控制和适应协议)层。L2 CAP主要承担。

Above the HCI layer are the upper layers of the protocol stack. The first of these is the L2CAP (logical link control and adaptation protocol) layer. The L2CAP is primarily responsible for.

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