| 摘要 |
Provided are a mobile communication system, a communication control device, a mobile management entity, and a mobile communication method which are capable of avoiding failures in the transmission of emergency calls via IMS in cases when a mobile station is connected to a VPLMN. A HSS 100 determines whether emergency call transmission via IMS 500 is supported on a VPLMN, and transmits, to an MME 300, a signal including the indicator "EM supported" or the indicator "EM not supported" which indicate whether emergency call transmission is supported. The MME 300 receives the indicator from the HSS 100, and transmits, to a UE 200, an "Attach Accept" for an "Attach Request" from the UE 20 to the VPLMN. The MME 300 transmits, to the UE 20, the "Attach Accept" including an indicator indicating whether emergency call transmission is supported, on the basis of the indicator received from the HSS 100. |
