coSPOT is a project i'm working on to tie digital radios together. I am using SharkRF's IP Connector Protocol Server, which is basically the whole project. Currently you can connect 2 SharkRF openSPOT hotspots together. The IP Connector allows for multiple openSPOTs connected together, thus creating a distrubuted simplex repeater system. The IP Connector also allows for DMR and C4FM radios to communicate together, sorry DStar users you can only talk to DStar radios.