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50	50	* OTAA: Over the air activation. In this mode, the end node will send a Join Request to server, server will reply with a Join Accept and the end node will parse this Join Accept message to get the Dev Addr / APP Session Key(AppSkey / Network Session Key(NwkSKey). Because the AppSkey and NwkSkey is dynamic, OTAA mode provide more security.
51	51	* ABP: Activation by personalization. There is no hand-shake with LoRaWAN server for activition. The end node will use fix Dev Addr / APP Session Key(AppSkey / Network Session Key(NwkSKey) to upload the packet. So the packet can be decode if someone know these fix keys.
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55	55	= 4. Get and decode the packet =
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57	57	According to above, it is possible to get the payload from sensor without LoRaWAN server:
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59	59	1. Setting the end node to ABP mode
60		-1. Add decode program and add the keys of the sensor. So to get the payload. There is an example for such application, see [[Communication with ABP End Node>>doc:Main.Communicate with ABP End Node without LoRaWAN Network Server --- LG308.WebHome]]
	58	+1. Add decode program and add the keys of the sensor. So to get the payload. There is an example for such application, see [[Communication with ABP End Node>>Communicate with ABP End Node without LoRaWAN Network Server --- LG308]]
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