Section: 4.23.16.2 Handover of a PDU Session procedure from 3GPP to untrusted non-3GPP access (non-roaming and roaming with local breakout)
Content: When a PDU Session is handover from 3GPP access with an I-SMF to untrusted non-3GPP access (non-roaming and roaming with local breakout), the following steps take place: 1) Step 1 of clause 4.9.2.2. 2) Step 2 of clause 4.9.2.2. 3) The step 3 in clause 4.9.2.4.2 is executed involving I-SMF instead of V-SMF, with following differences: - Figure 4.3.4.3-1 step 14 involving I-SMF instead of V-SMF. - Figure 4.3.4.3-1 step 16a: The SMF invokes Nsmf_PDUSession_StatusNotify (Release) indicating the release is due to a PDU Session Handover out of the I-SMF. - Figure 4.3.4.3-1 step 16b: the I-SMF invoke the Nsmf_PDUSession_SMContexStatusNotify (Release) indicating the Release is due to a PDU Session Handover out of the I-SMF: the AMF determines that only the SMcontext with the I-SMF is to be released but that the PDU Session is not released. The steps 2 to 3 above shall be repeated for all PDU Sessions to be moved from 3GPP access to untrusted non-3GPP access.