Communications and commands were sent to the flight system via the Mission Operations System (MOS), which is a process developed by the OPALS team.
Although most downlinks went through the OCTL, some went through other ground stations, including the German Aerospace Center's (DLR) optical ground station in Oberpfaffenhofen, Germany and the European Space Agency's ground station in Mount Teide, Tenerife, Canary Islands [REF].