The DeviceTime MAC command is specified in LoRaWAN 1.0.3, the network must be notified out-of-band that it supports this command.
The DeviceTime is used for Class B device to find the first beacon.
We will add a command that makes the DeviceTimeReq to a network server and provide the DeviceTimeAns payload in the response of the AT Command.
We may not modify the RTC on the module as it is not needed for the AT firmware.