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17	17	* End Node Keys screen shot shows in end node and server. so we can check if the keys are correct. (In most case, we found keys doesn't match, especially APP EUI)
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	20	+
20	20	(% style="color:blue" %)**1. End Device Join Screen shot, we can check:**
21	21
22	22	* If the device is sending join request to server?
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38	38	Console Output from Gateway to see packets between end node and server.
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	42	+
41	41	(% style="color:blue" %)**3. Gateway Traffic Page in LoRaWAN Server**
42	42
43	43	* If the Join Request packet arrive the gateway traffic in server? If not, check the internet connection and gateway LoRaWAN server settings.
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49	49	The Traffic for the End node in the server, use TTN as example
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	54	+
52	52	(% style="color:blue" %)**4. Data Page in LoRaWAN server**
53	53
54	54	* If this data page shows the Join Request message from the end node? If not, most properly you have wrong settings in the keys. Keys in the server doesn't match the keys in End Node.
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57	57
58	58	The data for the end device set in server
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	63	+
60	60	[[image:image-20220526163732-5.png]]
61	61
62	62	Check if OTAA Keys match the keys in device
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104	104
105	105	US915 Channels
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	111	+
107	107	[[image:image-20220526163926-7.png]]
108	108
109	109	AU915 Channels
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444	444	= 10. Why i got the payload only with "0x00" or "AA~=~="? =
445	445
446	446
447		-* If you are using US915, AU915 or AS923 frequencies.It is possible because: .
	452	+**Why this happen:**
448	448
	454	+For US915, AU915 or AS923 frequencies.It is possible because: .
	455	+
449	449	When using the frequency mentioned above, the server sometimes adjusts the Data Rate (DR) of the node, because the end node has Adaptive Data Rate (ADR) Enabled.
450	450
451		-When the server adjusts your node rate to 0, the maximum payload length is 11 bytes. The server sometimes sends an ADR packet to the node,and the node will reply to the server after receiving the ADR packet, but the number of payload bytes exceeds the limit,so it will send a normal uplink packet, and an additional 00 data packet.
	458	+When the server adjusts end node data rate to 0, the maximum payload length is 11 bytes. The server sometimes sends an ADR packet to the end node, and the node will reply to the server after receiving the ADR packet, but the number of payload bytes exceeds the limit, so it will send a normal uplink packet, and following an additional 00 data packet to handle this MAC command response.
452	452
453		-Solution: Use the decoder to filter out this 00 packet.
454	454
455		-Some node decoders may not have filtering function, or you need decoders of other servers and formats. Please send an email to [[david.huang@dragino.cc>>mailto:david.huang@dragino.cc]]
	461	+**How to solve:**
456	456
	463	+Solution: Use the decoder to filter out this 0x00 packet.
457	457
	465	+Some node decoders may not have the filter function, or you need decoders of other servers and formats. Please send an email to [[support@dragino.com>>mailto:support@dragino.com]]
458	458
	467	+
	468	+
459	459	= 11. Why my Dev EUI and APP EUI is 0x000000000000, how to solve? =
460	460
461	461

image-20221215223215-1.png

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	1	+XWiki.Edwin

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