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1	1	**~ Contents:**
2	2
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3	3	{{toc/}}
4	4
5	5
6		-
7	7	= 1. OTAA Join Process Debug =
8	8
9	9	These pages are useful to check what is wrong on the Join process. Below shows the four steps that we can check the Join Process.
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194	194	* This packet must match the frequency of the RX1 or RX2 window.
195	195	* This packet must match the DataRate of RX1(RX1DR) or RX2 (RX2DR). **This is the common fail point, because different lorawan server might use different RX2DR and they don't info End Node via ADR message so cause the mismatch. If this happen, user need to change the RX2DR to the right value in end node. In OTAA, LoRaWAN Server will send the RX2DR setting in Join Accept message so the end node will auto adjust. but ABP uplink doesn't support this auto change.**
196	196
197		-
198		-
199	199	== 5.2 See Debug Info ==
200	200
201	201	(((
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306	306	* Gateway traffic (from server UI) to shows the data exchange between gateway and server.
307	307	* End Node traffic (from server UI) to shows end node activity in server.
308	308
309		-
310		-
311	311	= 6. Downlink Issue ~-~- Packet REJECTED, unsupported frequency =
312	312
313	313	(((
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443	443
444	444	= 11. Why my Dev EUI and APP EUI is 0x000000000000, how to solve? =
445	445
446		-(((
447	447	It is possible the keys is erased during upgrading of firmware. and the console output shows below after AT+CFG
448		-)))
449	449
450		-(((
451	451	AT+APPKEY=00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
452		-)))
453	453
454		-(((
455	455	AT+NWKSKEY=00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
456		-)))
457	457
458		-(((
459	459	AT+APPSKEY=00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
460		-)))
461	461
462		-(((
463	463	AT+APPEUI=00 00 00 00 00 00 00 00
464		-)))
465	465
466		-(((
467		-
468		-)))
469	469
470		-(((
471	471	You can get the keys from the box sticker or send mail to Dragino Support to check keys with the provided SN number.
472		-)))
473	473
474		-(((
475	475	You can rewrites the keys by running commands in AT Console
476		-)))
477	477
478		-(((
479		-**For example：**
480		-)))
	460	+For example：
481	481
482		-(((
483	483	AT+APPKEY=85 41 47 20 45 58 28 14 16 82 A0 F0 80 0D DD EE
484		-)))
485	485
486		-(((
487	487	AT+NWKSKEY=AA CC B0 20 30 45 37 32 14 1E 14 93 E2 3B 20 11
488		-)))
489	489
490		-(((
491	491	AT+APPSKEY=11 23 02 20 30 20 30 60 80 20 20 30 30 20 10 10
492		-)))
493	493
494		-(((
495	495	AT+APPEUI=2C 45 47 E3 24 12 23 24
496		-)))
497	497
498		-(((
499	499	(Any combination of 16 bit codes can be used）
500		-)))
501	501
502	502
503	503	(% class="wikigeneratedid" %)