E.2 Distributed Anchor
23.5483GPP5G System Enhancements for Edge ComputingRelease 17Stage 2TS
SSC mode 3 cannot be used when the UE is registered in EPC as 5G-NAS is not available. Re-establishing a PDN connection after releasing an old one can be done in EPS using the "reactivation requested" cause value in EPS bearer context deactivation (see clause 6.4.4.2 of TS 24.301 [7]), if the feature is supported by the EPS network.