{"release":"Rel-15","nodes":[{"number":"23.506","type":"TS","title":"TISPAN; IP Multimedia Subsystem (IMS); Stage 2 description [3GPP TS 23.228 Release 7, modified]","series":23,"status":"Under change control","initial_release":"Rel-8","primary_group":"S2","portal_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=854"}],"edges":[]}