{"release":"Rel-16","nodes":[{"number":"23.231","type":"TS","title":"SIP-I based circuit-switched core network; Stage 2","series":23,"status":"Under change control","initial_release":"Rel-8","primary_group":"C4","portal_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=822"}],"edges":[]}