{"release":"Rel-18","nodes":[{"number":"21.978","type":"TR","title":"Feasibility Technical Report; CAMEL Control of VoIP Services","series":21,"status":"Under change control","initial_release":"Release 1999","primary_group":"C4","portal_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=561"}],"edges":[]}