说明：  本技术文档是本人再学习过程中自己翻译理解后的总结。关于Socket、SIP、RTP、G729、ARM语音编解码、H263、H264视频编解码。包括理解，基本的内容和算法等等。
(The technical documentation is a learning process, I no longer understand their own after the translation of the summary. On the Socket, SIP, RTP, G729, ARM voice codec, H263, H264 video codec. Including the understanding of the basic content and algorithms and so on.)