ThiS TR studies use cases, requirements and candidate solutions for protecting the IMS media plane
against eavesdropping and undetected modification.
Currently IMS media protection relies on security provided at the lower layers. With Common IMS, it has become possible to use IMS over a wide variety of access networks which provide varying levels of security and in some cases no security at all.
It is therefore desirable to study solutions for securing the IMS media plane in a uniform manner across all access networks. Furthermore, media transport in the core
network, although generally less vulnerable than in the access network, may also be realised in varying ways with
different levels of security. Therefore, the present document also studies solutions for end-to-end protection of IMS media.