What is JAIN?
It seems to be a system for controlling large scale, integrated communications infrastructures and modeling events with such networks via the JavaBeans API. The scale of this effort seems very large and encompasses the work of many organizations. The work is very new and seems to tie into Sun’s SCSL strategy, which leads us me to believe that there is not much in the way of Open Source options in this area. However, some protocols such as H.323 are genuinely open and are even cloned so it is possible that chunks of the JAIN system may exist in a scattered manner. We have no knowledge of a serious Free Software implementation of RTP or the H.323 infrastructures in Java.