关于SIP的RFC 3261文档的中文翻译，供初学者使用

RFC3261 日文翻译版本。完全按照英文原版的3261文档翻译完成。

OpenSIPStack is an ongoing attempt to provide software developers a platform agnostic stack implementation of RFC 3261. Currently, OpenSIPStack can be compiled in Linux, Solaris, BSD, Darwin and Windows. It boasts of an event driven architecture whic