{"release":"Rel-99","nodes":[{"number":"21.01U","type":"TR","title":"Requirements for the UMTS Terrestrial Radio Access (UTRA) system","series":21,"status":"Under change control","initial_release":"UMTS","primary_group":"R6","portal_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=542"}],"edges":[]}