Section: 9.4.9 Authentication and ciphering request
Content: This message is sent by the network to the MS to initiate authentication of the MS identity. Additionally, the ciphering mode is set, indicating whether ciphering will be performed or not. See table 9.4.9/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ] . Message type: AUTHENTICATION AND CIPHERING REQUEST Significance: dual Direction: network to MS Table 9.4.9/TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ] : AUTHENTICATION AND CIPHERING REQUEST message content