{"release":"Rel-20","nodes":[{"number":"24.228","type":"TS","title":"Signalling flows for the IP multimedia call control based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage 3","series":24,"status":"Under change control","initial_release":"Rel-5","primary_group":"C1","portal_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=1054"}],"edges":[]}