PICS PICS_NGAP_A4_2_1_1 //AMF - UE Context Management Procedures - ALWAYS ESTABLISH INITIAL CONTEXT - IUT triggers INITIAL_CONTEXT_SETUP_REQUEST even when UE_Context_Request_IE is not present in the INITIAL_UE_MESSAGE (ref. TS 138 413, clause 8.3.1.1: AMF configuration to trigger ICS beyond the mandatory case)
PICS PICS_NGAP_A4_2_1_1 //AMF - UE Context Management Procedures - ESTABLISH INITIAL CONTEXT ON REGISTRATION - for a signalling only connection, IUT triggers INITIAL_CONTEXT_SETUP_REQUEST conveying the REGISTRATION_ACCEPT in the NAS_PDU IE even when the UE_Context_RequestIE is not present in the INITIAL_UE_MESSAGE (ref. TS 138 413, clause 8.3.1.1: AMF configuration to trigger ICS for all NAS procedures or on a per NAS procedure basis; clause 8.6.1.2: ICS mandatory when UE_Context_Request IE is present)
PICS PICS_NGAP_A4_5_2 //AMF - Transport of NAS Messages Procedures - DOWNLINK NAS
PICS PICS_NGAP_A4_5_2_1 //AMF - Transport of NAS Messages Procedures - DOWNLINK NAS - ALLOW_SKIP_PIGGY_BACK -IUT conveys REGISTRATION_ACCEPT via DOWNLINK_NAS_TRANSPORT instead of piggybacking it in the INITIAL_CONTEXT_SETUP_REQUEST, when UE_Context_Request_IE is present in the INITIAL_UE_MESSAGE (ref. TS 138 413, clause 9.2.2.1: NAS-PDU IE is optional in INITIAL_CONTEXT_SETUP_REQUEST)
PICS PICS_NGAP_A4_5_2_1 //AMF - Transport of NAS Messages Procedures - DOWNLINK NAS - ALLOW_SKIP_PIGGY_BACK - when the UE_Context_Request IE is present in the INITIAL_UE_MESSAGE, IUT triggers INITIAL_CONTEXT_SETUP_REQUEST without conveying the REGISTRATION_ACCEPT in its NAS_PDU IE, and conveys the REGISTRATION_ACCEPT via DOWNLINK_NAS_TRANSPORT instead (ref. TS 138 413, clause 8.6.1.2: ICS mandatory when UE_Context_RequestIE is present; clauses 8.3.1.2 and 9.2.2.1: NAS-PDU IE is optional in INITIAL_CONTEXT_SETUP_REQUEST)
PICS PICS_NGAP_A4_5_5 //AMF - Transport of NAS Messages Procedures - REROUTE NAS REQUEST
