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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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437	437	* (((
438	438	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]]
439	439
	439	+
440	440
441	441	)))
442	442
443	443	= 11. Why my Dev EUI and APP EUI is 0x000000000000, how to solve? =
444	444
445		-(((
446	446	It is possible the keys is erased during upgrading of firmware. and the console output shows below after AT+CFG
447		-)))
448	448
449		-(((
450	450	AT+APPKEY=00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
451		-)))
452	452
453		-(((
454	454	AT+NWKSKEY=00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
455		-)))
456	456
457		-(((
458	458	AT+APPSKEY=00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
459		-)))
460	460
461		-(((
462	462	AT+APPEUI=00 00 00 00 00 00 00 00
463		-)))
464	464
465		-(((
466		-
467		-)))
468	468
469		-(((
470	470	You can get the keys from the box sticker or send mail to Dragino Support to check keys with the provided SN number.
471		-)))
472	472
473		-(((
474	474	You can rewrites the keys by running commands in AT Console
475		-)))
476	476
477		-(((
478		-**For example：**
479		-)))
	460	+For example：
480	480
481		-(((
482	482	AT+APPKEY=85 41 47 20 45 58 28 14 16 82 A0 F0 80 0D DD EE
483		-)))
484	484
485		-(((
486	486	AT+NWKSKEY=AA CC B0 20 30 45 37 32 14 1E 14 93 E2 3B 20 11
487		-)))
488	488
489		-(((
490	490	AT+APPSKEY=11 23 02 20 30 20 30 60 80 20 20 30 30 20 10 10
491		-)))
492	492
493		-(((
494	494	AT+APPEUI=2C 45 47 E3 24 12 23 24
495		-)))
496	496
497		-(((
498	498	(Any combination of 16 bit codes can be used）
499		-)))
500	500
501	501
502	502	(% class="wikigeneratedid" %)