{"release":"Rel-20","nodes":[{"number":"03.53","type":"TS","title":"Tandem Free Operation (TFO); Service description; Stage 2","series":3,"status":"Under change control","initial_release":"Release 1998","primary_group":"S4","portal_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=154"}],"edges":[]}