6.3.1B PS Handover procedures for SRVCC

23.2163GPPRelease 16Single Radio Voice Call Continuity (SRVCC)Stage 2TS

Intra-UTRAN (HSPA) SRNS Relocation procedure for 3GPP SRVCC UE are performed as defined in TS 23.060 [10] and UTRAN (HSPA) Iu mode to E-UTRAN Inter RAT handover are performed as defined in TS 23.401 [2], with the following additions:

– MS Classmark 2, MS Classmark 3, STN-SR, C‑MSISDN, ICS Indicator and the Supported Codec IE shall be sent from the source SGSN to the target SGSN/MME if available.

– The target SGSN includes a "SRVCC operation possible" indication in the RANAP Common ID message, meaning that both UE and the target SGSN are SRVCC-capable.

– The target MME includes a "SRVCC operation possible" indication in the S1-AP Handover Request message, meaning that both UE and the target MME are SRVCC-capable.