Patent ID: 8036700

Claim:
A mobile communication system, comprising: a reception unit to receive data from a mobile terminal having a phone call function via a common channel being a communication channel shared within a plurality of mobile terminals; a storage unit to store the data received by the reception unit and an identifier of the mobile terminal serving as a transmission source of the data in association with each other; an answer unit to read, when a phone call device having a phone call function makes a call to the mobile terminal, the data stored by the storage unit in association with the identifier of the mobile terminal serving as a call destination to send a response based on the data to the phone call device; an allocation unit to allocate a dedicated channel which is a dedicated communication channel to the mobile terminal; and a notification unit to notify, in a state where the dedicated channel cannot be allocated to the mobile terminal, notification indicating that the dedicated channel cannot be allocated to the mobile terminal, to the mobile terminal through the common channel, wherein the reception unit receives the data through the common channel from the mobile terminal to which the notification has been sent from the notification unit.