use "3GPP‑Page" to get the last Word version
use "ETSI‑search" to get the last Rel-15 PDF version, when it is available
the ToC, based on the last 3GPP Word version, is reproduced for a better overview
2019/03 … p.
Rapporteur: Mr. Haigh, Peter
The present document specifies the security architecture, procedures and information flows needed to protect the mission critical service (MCX). The architecture includes mechanisms to protect the Common Functional Architecture and security mechanisms for mission critical applications. This includes Push-To-Talk (MCPTT), Video (MCVideo) and Data (MCData). Additionally, security mechanisms relating to on-network use, off-network use, roaming, migration, interconnection, interworking and multiple security domains are described.