{"release":"Rel-11","nodes":[{"number":"10.68","type":"TR","title":"Introduction to the services: enhanced Multi-Level Precedence and Pre-emption (eMLPP), Voice Group Call Service (VGCS), Voice Broadcast Service (VBS)","series":10,"status":"Withdrawn under change control","initial_release":"Release 1999","primary_group":"S2","portal_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=402"}],"edges":[]}