Abstract: A telephone sends, in accordance with a user's instruction, a call connection request that includes a source telephone number and a destination telephone number to a connecting device or VoIP server device that corresponds to the source telephone number. Management server device, upon identifying a set of a source telephone number and a destination telephone number that is more appropriate than a set of those included in the call connection request, sends a notice to the telephone to prompt a user to change the telephone numbers. The connecting device or VoIP server device that establishes a call connection in accordance with the call connection request, notifies a destination telephone of a to-be-notified telephone number that is selected by the management server device based on the destination telephone number.

Abstract: A telephone sends, in accordance with a user's instruction, a call connection request that includes a source telephone number and a destination telephone number to a connecting device or VoIP server device that corresponds to the source telephone number. Management server device, upon identifying a set of a source telephone number and a destination telephone number that is more appropriate than a set of those included in the call connection request, sends a notice to the telephone to prompt a user to change the telephone numbers. The connecting device or VoIP server device that establishes a call connection in accordance with the call connection request, notifies a destination telephone of a to-be-notified telephone number that is selected by the management server device based on the destination telephone number.

Abstract: A notification apparatus includes: an obtaining unit that obtains information on a use of a first mobile communication network when a mobile communication terminal configured to use selectively one of a first identifier and a second identifier which are assigned to the first mobile communication network and the second mobile communication network, respectively so as to perform a communication currently connects to the second mobile communication network using the second identifier; and a notifying unit that notifies the information obtained by the obtaining unit to the mobile communication terminal via the second mobile communication network.

Abstract: A control apparatus includes: a determination unit that determines whether identification information for identifying a mobile communication terminal in a second mobile communication network can be changed from first identification information assigned in the first mobile communication network to a second identification information assigned in the second mobile communication network, when the mobile communication terminal in which the first identification information is stored is situated in a region in which the second mobile communication network can be used and the mobile communication terminal uses the first mobile communication network via a second mobile communication network; and a notification unit that transmits a notification of a change of the identification information to a request apparatus that is connected to the second mobile communication network and is configured to request the mobile communication terminal to change the identification information, if it is determined that the identification

Abstract: A notification apparatus includes: an obtaining unit that obtains information on a use of a first mobile communication network when a mobile communication terminal configured to use selectively one of a first identifier and a second identifier which are assigned to the first mobile communication network and the second mobile communication network, respectively so as to perform a communication currently connects to the second mobile communication network using the second identifier; and a notifying unit that notifies the information obtained by the obtaining unit to the mobile communication terminal via the second mobile communication network.

Abstract: A control apparatus includes: a determination unit that determines whether identification information for identifying a mobile communication terminal in a second mobile communication network can be changed from first identification information assigned in the first mobile communication network to a second identification information assigned in the second mobile communication network, when the mobile communication terminal in which the first identification information is stored is situated in a region in which the second mobile communication network can be used and the mobile communication terminal uses the first mobile communication network via a second mobile communication network; and a notification unit that transmits a notification of a change of the identification information to a request apparatus that is connected to the second mobile communication network and is configured to request the mobile communication terminal to change the identification information, if it is determined that the identification

Abstract: In order to perform SM swap efficiently, a mobile communication device that performs mobile communication includes: an attachment unit for attaching thereto an embedded subscriber identity module (eSIM) that stores therein an Operational Profile (OP) and a Provisioning Profile (PP); a PP reception unit for receiving, through a mobile communication network associated with the OP stored in the eSIM, the PP associated with an Subscription Manager (SM) corresponding to a destination mobile communication network, and storing the received PP in the eSIM; and an OP reception unit for performing communication with the SM using the stored PP associated with the SM to receive the OP associated with the mobile communication network, and storing the received OP in the eSIM.

Abstract: In order to perform SM swap efficiently, a mobile communication device that performs mobile communication includes: an attachment unit for attaching thereto an embedded subscriber identity module (eSIM) that stores therein an Operational Profile (OP) and a Provisioning Profile (PP); a PP reception unit for receiving, through a mobile communication network associated with the OP stored in the eSIM, the PP associated with an Subscription Manager (SM) corresponding to a destination mobile communication network, and storing the received PP in the eSIM; and an OP reception unit for performing communication with the SM using the stored PP associated with the SM to receive the OP associated with the mobile communication network, and storing the received OP in the eSIM.