13 Supplementary service configuration for ICS

24.2923GPPIP Multimedia (IM) Core Network (CN) subsystem Centralized Services (ICS)Release 17Stage 3TS

13.1 General

For ICS, the multimedia telephony application server supports the following methods for supplementary service configuration:

– Supplementary service setting requests directly from the ICS UE as described in subclause 13.2; or

– Supplementary service setting requests from the MSC Server enhanced for ICS as described in subclause 13.3.

The multimedia telephony application server shall allow only one method per ICS user. The multimedia telephony application server shall reject supplementary service configuration requests if the ICS user has chosen the not allowed method.

13.2 ICS UE

The procedures as defined in 3GPP TS 24.173 [9] apply for the ICS UE.

13.3 MSC server enhanced for ICS

The procedures as defined in 3GPP TS 29.292 [24] apply for the MSC Server enhanced for ICS.

Annex A (informative):
Example signalling flows