6.3.5 Service continuity for ICS UE using MSC Server assisted mid-call feature while maintaining CS media
23.2373GPPIP Multimedia Subsystem (IMS) Service ContinuityRelease 17Stage 2TS
If the SCC AS detects that the ICS UE is not reachable over Service Control Signalling Path and if the UE and the network support the MSC Server assisted mid-call feature and the CS Bearer Control Signalling Path was established using the MSC Server enhanced for ICS, the same procedure as in clause 6.3.2.1.4a steps 4-6 are performed.
After completion of this procedure, the UE uses procedures as defined in TS 24.008 [24] to perform service control.