Section: 7.3.7 Context Acknowledge
Content: A Context Acknowledge message shall be sent as a response to a previous Context Response message, only if the previous Context Response message is received with the acceptance cause. Possible cause values are specified in Table 8.4-1. Message specific cause values are: - "User authentication failed". - "Relocation failure due to NAS message redirection". - "Denied in RAT". Upon receiving cause value other than the request was accepted, the old MME/S4-SGSN shall continue as if the Context Request was never received. Table 7.3.7-1 specifies the presence requirements and conditions of the IEs in the message. Table 7.3.7-1: Information Elements in a Context Acknowledge Table 7.3.7-2: Bearer Context within Context Acknowledge