Sistemi Universal i Telekomunikacionit Mobile (UMTS); LTE; IP Nënsistemi multimedial (IMS) seancat emergjente (3GPP TS 23.167 versioni 15.3.0 Publikimi 15)
Universal Mobile Telecommunications System (UMTS); LTE; IP Multimedia Subsystem (IMS) emergency sessions (3GPP TS 23.167 version 15.3.0 Release 15)