Mobile real-time e-learning tools needed

Is online real time interaction feasible on limited Internet connections, such as those on mobile devices? I was invited to try "Learn Central" with the Elluminate Live! collaboration tool. However, this requires a Java download which will take 11 minutes on my slow wireless Internet connection. Even after that I was not confident that Elluminate would have options suitable for a low speed high latency connection to my low performance Linux netbook computer. That may seem an unusual configuration of computer. But it is not that different to the smart phones many people have and could use for education, if a workable configuration could be found. As it is, it seems that every week or so someone offers me what they claim to be a revolutionary online education tool, which turns out not to run on anything other than a Microsoft Windows computer with a high speed broadband connection and a lot of very fragile add-on software. What we need are some really revolutionary tools which are not just adaptions of business video conferencing.