A.5 Data communication between MCPTT network entities

33.1793GPPRelease 13Security of Mission Critical Push To Talk (MCPTT) over LTETS

[33.179 MCPTT-A.5-001] A security mechanism shall exist that allows transmission of data between 3GPP MCPTT network entities to be authenticated, confidentiality protected, integrity protected and protected from replays.

NOTE: UE-to-UE and UE-to-network relays are not considered to be ‘network entities’.