{"release":"Rel-13","nodes":[{"number":"22.173","type":"TS","title":"IP Multimedia Core Network Subsystem (IMS) Multimedia Telephony Service and supplementary services; Stage 1","series":22,"status":"Under change control","initial_release":"Rel-7","primary_group":"S1","portal_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=620"}],"edges":[]}