一套不错的音视频SDK，可用于二次开发，无回声问题，支持1080P高清视频通讯，采用了P2P技术，支持多平台互通，公开了代码跟开发文档，很适合做项目。-A good set of audio and video SDK for secondary development, no echo problems, support 1080P HD video communications using P2P technology to support multi-platform interopera

对ILBC库音频处理进行android上编程的demo-Demo of the the audio processing ILBC library android programming

自己编写了一个pjsip 电话app demo，提供给初学者下载(pjsip IPPhone app demo)