Z.4 IMS-based RLOS Session Initiation

23.2283GPPIP Multimedia Subsystem (IMS)Release 18Stage 2TS

Clause 5.6.2 applies with the following additional requirements:

– The UE shall include an RLOS indication in all originating sessions. The P-CSCF shall reject an originating session without such an indication.

– The S-CSCF shall include the RLOS indication in its charging data related to an IMS session.

– The S-CSCF shall forward the session initiation request to the Telephony Application Server. The Telephony Application Server shall bypass originating services for all successfully authenticated UEs. The Telephony Application Server, based on operator policy, may be configured with different policies (e.g. set of destinations) for all of the above registration cases. The Telephony Application Server shall enforce these policies.

– The S-CSCF shall include the RLOS indication in its charging data related to an IMS session.

– The registered identity shall be used as the asserted identity.

Annex AA (normative):
Support of SBA in IMS