集成语音，视频等于一体
用户可以拨打和接听电话
主要功能:
语音呼叫/三方会议
来电显示，呼叫记录，语音信箱提示
即时信息，支持SIP 协议
后台运行
……
高级功能：如视频通话
Integrated voice, video is equal to one
Users can make and receive calls
The main function:
Voice call / three party conference
Caller ID, call recording, voice mail tips
Instant information, support for SIP protocol
Run in background
......
Advanced features: such as video phone calls