Section: 4.11.4.3.3a Initial Attach for emergency session (GTP on S2b)
Content: The procedure in clause 7.2.5 of TS 23.402[ Architecture enhancements for non-3GPP accesses ]  [26] applies with the following modification: - Step 3 (Create Session Request): ePDG determines if interworking with 5GC is supported based on UE's 5G NAS capability and local configuration. In SMF+PGW-C, only one S-NSSAI is configured for the emergency APN. An emergency SMF+PGW-C identity should be configured as part of the Emergency Configuration Data specified in clause 13.5 of TS 23.402[ Architecture enhancements for non-3GPP accesses ]  [26]. - Step 6 (Create Session Response), compared to step D.1 of clause 4.11.4.3.3, SMF+PGW-C does not include S-NSSAI in PCO for emergency PDN connection.