{"release":"Rel-4","nodes":[{"number":"06.75","type":"TR","title":"Performance characterization of the GSM Adaptive Multi-Rate (AMR) speech codec","series":6,"status":"Under change control","initial_release":"Release 1998","primary_group":"S4","portal_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=304"}],"edges":[]}