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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
200		-
201	201	== 5.2 See Debug Info ==
202	202
203	203	(((
...	...	@@ -212,7 +212,7 @@
212	212	Configure a downstream to the end device
213	213	)))
214	214
215		-[[image:image-20220526164623-12.png]]
	214	+[[image:https://wiki.dragino.com/images/thumb/8/82/Downstream_debug_1.png/600px-Downstream_debug_1.png||height="217" width="600"]]
216	216
217	217	(((
218	218	Set a downstream in TTN and see it is sent
...	...	@@ -223,7 +223,7 @@
223	223	This downstream info will then pass to the gateway downstream list. and include the DR which is used (SF9BW125) in EU868 is DR3
224	224	)))
225	225
226		-[[image:image-20220526164650-13.png]]
	225	+[[image:https://wiki.dragino.com/images/thumb/d/dc/Downstream_debug_2.png/600px-Downstream_debug_2.png||height="245" width="600"]]
227	227
228	228	(((
229	229	Gateway Traffic can see this downstream info
...	...	@@ -238,7 +238,7 @@
238	238	When the downstream packet appear on the traffic of Gateway page. The LoRaWAN gateway can get it from LoRaWAN server and transmit it. In Dragion Gateway, this can be checked by runinng "logread -f" in the SSH console. and see below:
239	239	)))
240	240
241		-[[image:image-20220526164734-14.png]]
	240	+[[image:https://wiki.dragino.com/images/thumb/2/21/Downstream_debug_3.png/600px-Downstream_debug_3.png||height="195" width="600"]]
242	242
243	243	(((
244	244	Gateway Sent out this packet
...	...	@@ -298,7 +298,6 @@
298	298	Receive data
299	299	1:0012345678}}}
300	300
301		-
302	302	== 5.3 If problem doesn’t solve ==
303	303
304	304	**If user has checked below steps and still can't solve the problem, please send us (support @ dragino.com) the sceenshots for each step to check. They include:**
...	...	@@ -308,9 +308,6 @@
308	308	* Gateway traffic (from server UI) to shows the data exchange between gateway and server.
309	309	* End Node traffic (from server UI) to shows end node activity in server.
310	310
311		-(% class="wikigeneratedid" %)
312		-​​​​​​​
313		-
314	314	= 6. Downlink Issue ~-~- Packet REJECTED, unsupported frequency =
315	315
316	316	(((
...	...	@@ -470,5 +470,3 @@
470	470	(Any combination of 16 bit codes can be used）
471	471
472	472
473		-(% class="wikigeneratedid" %)
474		-

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