Extended IP Multimedia Subsystem (IMS) media plane security features
The present document details relevant use cases/services for different user groups and corresponding solutions for IMS media plane security which are not covered by TS 33.328 [3]. The corresponding requirements in the Rel-9 study documented in TR 33.828 [2] will be used as a basis. The covered use cases/services are: conference calls, protection of non-RTP media, early media, communication diversion, deferred delivery, protected media recording, video on demand, AS-terminated media security, transcoder functionality and SRVCC. Example user groups are enterprises, National Security and Public Safety (NSPS) organizations, different government authorities, and general public.
Editor’s Note: The list of covered use cases/services shall be updated when the study is finalized.
Editor’s Note: It is for further study whether protection of early media is possible in IMS.