ity (PSCell). The RRC Reject message constitutes the response of the gNB entity to reject the request to establish the connection and contains the following information elements: RRCReject waitTime extendedWaitTime 250 NG-RAN and 5G-NR waitTime: this element of information indicates the waiting time which is between 1 and 16 seconds. extendedWaitTime this element of information, introduced in Release 10, extends the wait time to 1800 seconds. The RRC SetupComplete message constitutes the response from the mobile to the RRC Setup message to confirm the establishment of the connection and contains the following information elements: RRCSetupComplete rrc-TransactionIdentifier selectedPLMN-Identity registeredAMF guami-Type s-nssai-List dedicatedNAS-message selectedPLMN-Identity: this element of information defines the identity of the MCC (Mobile Country Code) and MN C (Mobile Network Code) on which the mobile wishes to connect, in the case where the cell is shared between several networks. registeredAMF1 this element of information indicates the GUAMI (Globally Unique AMF Identity) of the AMF entity on which the mobile is attached. Guami-Type: this element indicates whether the GUAMI is native, i.e. derived from 5G-GUTI or obtained by correspondence from the GUTI EPS. s-nssai-List: this element indicates the list of S-NSSAIs supported by the AMF. dedicatedNAS-message: this element of information indicates that the RRC message carries an NAS (Non-Access Stratum). 9.2.3. Activation of security The security activation procedure starts when the gNB entity receives a request from the AMF to establish the context for the mobile. The procedure for activating the security of the radio interface allows the implementation of the following operations: - encryption and integrity control (if enabled) of the data on the DRB media; - encryption and data integrity control of the SRB1 and SRB2 media. 5G-NR Radio Interface - Radio Access Procedure Table 9.5 provides the characteristics of the message support relating to the activation