手机到PC的通话协议及实现
我正在研究 VoIP(对它来说还很陌生)。在探索它的过程中,我认为如果有一个系统可以允许普通移动/固定电话呼叫到您的 PC,那就太好了。
我看到雅虎语音提供了这项服务:http://voice.yahoo.jajah.com/home/index.castle?
这种服务使用什么协议?我想它应该只是 VoIP,但我不知道其中实现的差异。
如果我们想通过互联网在手机之间进行呼叫(例如 mobivox),我们需要使用哪种协议?
需要建立哪些基础设施和设施来实施这种服务(开发/编程辅助以及物理基础设施)?
I am working on VoIP (pretty new to it). While exploring it I thought it would be nice to have a system which can allow calls from normal mobile/landline phones to your PC.
I see that Yahoo voice provides this service:http://voice.yahoo.jajah.com/home/index.castle?
What protocol this kind of service use ? I guess it should be VoIP only but I am not aware of the differences in there implementations.
Which protocol do we need to use if we want to call from phone to phone via Internet(like mobivox) ?
What infrastructure and facilities do one needs to set up for implementing this kind of services(development/programming aids as well as physical infrastructure) ?
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音频数据通常作为RTP(实时传输协议)数据包发送。还有一种通信协议,如 RTSP(实时流协议)协议用作顶层。
请参阅以下文档:
http://www.ietf.org/rfc/rfc2326.txt
http://www.ietf.org/rfc/rfc3550.txt
Audio data is usually sent as RTP(Real-time Transport Protocol) packets. There is also a communication protocol like RTSP(Real Time Streaming Protocol) protocol used as a top layer.
See these documents:
http://www.ietf.org/rfc/rfc2326.txt
http://www.ietf.org/rfc/rfc3550.txt