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1	1	(% class="wikigeneratedid" id="HEndDeviceFrequencyBand" %)
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4		-= Contents： =
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6		- ~[[[hide>>url:https://http://8.211.40.43:8080/xwiki/bin/view/Main/End%20Device%20Frequency%20Band]]]
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8	8	{{toc/}}
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10	10	= 1. Introduction =
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19	19	For 005 LoRaWAN stack: to save battery, once boot, device will make first make 200 tries for OTAA Join, the time period of two Join Requests will depends on the DR and the airtime requirement. After this 200 Join finish, device will send a join request every 20 minutes. If device reboot, it will do above loop again.
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21	21	For 005 LoRaWAN Stack:
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23	23	* EU868 OTAA Join DR select. SF7->SF8->SF9->SF10->SF11->SF12; Each 3 attempts and then loop
24	24	* US915 and AU915 OTAA Join procedure,. End node by default will use all 72 channels to join and it will be set to use the proper sub-band after Join success
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31	31	=== 3.1.1 Notice for AS923 Frequency Bands ===
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33	33	Since [[RP002-1.0.1LoRaWAN Regional Parameters>>url:https://lora-alliance.org/sites/default/files/2020-02/rp_2-1.0.1.pdf]], AS923 include three different default settings for different countries: AS923-1, AS923-2 and AS923-3.
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35	35	AS923-1 use the same default uplink frequency as previous AS923 firmware. AS923-2 and AS923-3 are new with different default uplink frequency. User need to know exactly the frequency bands from the LoRaWAN server and choose the right firmware version for the end node.
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