Section: 4.23.7.3 Inter NG-RAN node N2 based handover with I-SMF insertion/change/removal 4.23.7.3.1 General
Content: When I-SMF is inserted or changed or removed during inter NG-RAN node N2 handover, the procedures defined in this clause are used. To support the EAS session continuity upon UL CL relocation, a N9 forwarding tunnel to support the EAS session continuity is established and released between the Source UL CL and Target UL CL as described in clause 4.23.9.4 or clause 4.23.9.5. NOTE: This allows the UE to go on exchanging with the source EAS despite the fact that a new UL CL has been allocated to the PDU Session.