Looks free5gc missed the pdu session data(use subscription or default smf selection data).in initialContextSetupRequest. so that after register accept,UE can’t access the network.backhaul_CP.pcap (9.2 KB)
UE Context Management Procedures
8.3.1 Initial Context Setup
The purpose of the Initial Context Setup procedure is to establish the necessary overall initial UE context at the NG-RAN node, when required, including PDU session context, the Security Key, Mobility Restriction List, UE Radio Capability and UE Security Capabilities, etc. The AMF may initiate the Initial Context Setup procedure if a UE-associated logical NG-connection exists for the UE or if the AMF has received the RAN UE NGAP ID IE in an INITIAL UE MESSAGE message or if the NG-RAN node has already initiated a UE-associated logical NG-connection by sending an INITIAL UE MESSAGE message via another NG interface instance. The procedure uses UE-associated signalling.