This article shows the potential of collaborative applications over the RENATA network, the academic, high-bandwidth, Colombian communication infrastructure with access to other high-bandwidth initiatives in Latin America (CLARA network), Europe (GEANT), and USA (Internet2). Several prototypes on top of Access Grid show the added value for telecollaboration and teleoperation applications in the academic sector, and in the future for business. We show prototypes that enhance a teleconference with interaction with virtual 3D objects and the use of grid resources.