实现语音对讲呼叫作用，采用G.729A编解码，可用于电话通讯应用。-The role of voice intercom call using the G.729A codec can be used for telephone communications applications.

Vc实现Flash插件，Flash方法调用，socket通讯，串口通讯，网页控制，发送HTTP Post，request等功能，其功能非常强大。不可多得的好源码。呕血推荐。-Vc Flash plug-in, Flash method call, the socket communication, serial communication, web control, send an HTTP Post, the request and other features, its very power