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1	1	**~ Contents:**
2	2
3		-(((
4		-
5		-)))
6		-
7	7	{{toc/}}
8	8
9	9
	6	+
10	10	= 1. OTAA Join Process Debug =
11	11
12	12	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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197	197	* This packet must match the frequency of the RX1 or RX2 window.
198	198	* 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.**
199	199
	197	+
	198	+
200	200	== 5.2 See Debug Info ==
201	201
202	202	(((
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307	307	* Gateway traffic (from server UI) to shows the data exchange between gateway and server.
308	308	* End Node traffic (from server UI) to shows end node activity in server.
309	309
	309	+
	310	+
310	310	= 6. Downlink Issue ~-~- Packet REJECTED, unsupported frequency =
311	311
312	312	(((
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436	436	* (((
437	437	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]]
438	438
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	+(((
445	445	It is possible the keys is erased during upgrading of firmware. and the console output shows below after AT+CFG
	447	+)))
446	446
	449	+(((
447	447	AT+APPKEY=00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
	451	+)))
448	448
	453	+(((
449	449	AT+NWKSKEY=00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
	455	+)))
450	450
	457	+(((
451	451	AT+APPSKEY=00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
	459	+)))
452	452
	461	+(((
453	453	AT+APPEUI=00 00 00 00 00 00 00 00
	463	+)))
454	454
	465	+(((
	466	+
	467	+)))
455	455
	469	+(((
456	456	You can get the keys from the box sticker or send mail to Dragino Support to check keys with the provided SN number.
	471	+)))
457	457
	473	+(((
458	458	You can rewrites the keys by running commands in AT Console
	475	+)))
459	459
460		-For example：
	477	+(((
	478	+**For example：**
	479	+)))
461	461
	481	+(((
462	462	AT+APPKEY=85 41 47 20 45 58 28 14 16 82 A0 F0 80 0D DD EE
	483	+)))
463	463
	485	+(((
464	464	AT+NWKSKEY=AA CC B0 20 30 45 37 32 14 1E 14 93 E2 3B 20 11
	487	+)))
465	465
	489	+(((
466	466	AT+APPSKEY=11 23 02 20 30 20 30 60 80 20 20 30 30 20 10 10
	491	+)))
467	467
	493	+(((
468	468	AT+APPEUI=2C 45 47 E3 24 12 23 24
	495	+)))
469	469
	497	+(((
470	470	(Any combination of 16 bit codes can be used）
	499	+)))
471	471
472	472
473	473	(% class="wikigeneratedid" %)