UPSat will be using SatNOGS network of ground stations for tracking and command&control operations through SatNOGS client. Below you can see a screenshot of the client on command and control configuration for UPSat:
Communications with the satellite are implemented through ECSS Standard Commands as described in ECSS-E-70-41A standard (CCSDS). You can checkout the code of the client on GitHub and the ecss services implemented on the satellite here. There has been a lot of effort to make sure that we implement all needed functionality on the SatNOGS client, while in parallel maintaining modularity and extensibility for future satellites and other protocols.