US 11,843,612 B2
Communication device management device, system, method, and non-transitory computer-readable recording medium
Eriko Saeki, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Appl. No. 17/259,769
Filed by NEC Corporation, Tokyo (JP)
PCT Filed Jul. 22, 2019, PCT No. PCT/JP2019/028640
§ 371(c)(1), (2) Date Jan. 12, 2021,
PCT Pub. No. WO2020/022257, PCT Pub. Date Jan. 30, 2020.
Claims priority of application No. 2018-139005 (JP), filed on Jul. 25, 2018.
Prior Publication US 2021/0344684 A1, Nov. 4, 2021
Int. Cl. H04L 9/40 (2022.01); G06F 21/12 (2013.01)
CPC H04L 63/105 (2013.01) [G06F 21/121 (2013.01); H04L 63/20 (2013.01); H04L 63/083 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A communication device management device comprising:
at least one memory configured to store instructions; and
at least one processor configured to execute the instructions to:
detect a change in a communication state as to a communication device, based on a response from the communication device to a confirmation signal transmitted at every predetermined time, the communication state indicating whether communication with the communication device is able to be achieved;
store, when a soft key stored in the communication device as to which the communication state has changed from not being able to be achieved to being able to be achieved is for a function restriction, the soft key for a function restriction in the communication device after canceling the restriction of the communication device; and
store, when the soft key stored in the communication device is not for the function restriction, the soft key for the function restriction in the communication device,
wherein the communication device operates in a function restriction state in which a restriction is performed on a predetermined function or in a restriction cancellation state in which the restriction of the function is cancelled, depending on the soft key read at starting or at rereading, and
wherein the communication state is detected as changing from indicating that the communication is not able to be achieved to indicating that the communication is able to be achieved when the response has been received from the communication device in response to a most recently sent confirmation signal after no response had been received from the communication device in response to a previously sent confirmation signal.