This article describes the concepts of IP phone, key technology, realization principles, software and hardware supports.

本文作者阐述了IP电话的概念、关键技术、实现方式及所需的软、硬件设施。

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By using the realization principles of the expanded at commands, it perfects the design of at module and ultimately achieves the main functions of call management.

利用扩展AT命令的实现原理，完善了对AT模块软件的设计，并最终实现了通话管理的主要功能。

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In the later part of the thesis, detailed analysis is made for the realization principles of the switching structure and internal function modules of multiplayer. switching chip BCM5615.

之后文章对多层交换芯片BCM5615的交换结构、内部各个功能模块的原理实现以及芯片中的二、三层数据流程作了比较详细的分析。

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But what turned their focus toward CSR was the realization that its core principles were the necessary bridge between civic and corporate good.

FORBES: Job Hunting in CSR, Part 2: Connecting Ethics with Career Objectives