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205	205	* This packet must match the frequency of the RX1 or RX2 window.
206	206	* This packet must match the DataRate of RX1(RX1DR) or RX2 (RX2DR). (% style="color:red" %)**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.**
207	207
	208	+
208	208	== 5.2 See Debug Info ==
209	209
210	210
...	...	@@ -262,15 +262,20 @@
262	262	)))
263	263
264	264	(((
265		-(% style="color:#037691" %)**AT+RX2FQ=869525000**  (%%) **~-~-->**  The RX2 Window frequency
266		-(% style="color:#037691" %)**AT+RX2DR=3**          (%%) **~-~-->**  The RX2 DataRate
267		-(% style="color:#037691" %)**AT+RX1DL=1000**       (%%) ** ~-~-->**  Receive Delay 1
268		-(% style="color:#037691" %)**AT+RX2DL=2000**       (%%) **~-~--> ** Receive Delay 2
269		-
270	270
271	271	)))
272	272
273	273	(((
	270	+(% class="box infomessage" %)
	271	+(((
	272	+AT+RX2FQ=869525000     ~-~--> The RX2 Window frequency
	273	+AT+RX2DR=3      ~-~--> The RX2 DataRate
	274	+AT+RX1DL=1000   ~-~--> Receive Delay 1
	275	+AT+RX2DL=2000   ~-~--> Receive Delay 2
	276	+)))
	277	+)))
	278	+
	279	+(((
274	274	(% style="color:blue" %)**when the device running, we can see below info:**
275	275	)))
276	276
...	...	@@ -302,9 +302,8 @@
302	302	1:0012345678}}}
303	303
304	304
305		-== 5.3 If problem doesn't solve ==
	311	+== 5.3 If problem doesn’t solve ==
306	306
307		-
308	308	(% style="color:red" %)**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:**
309	309
310	310	* End node console to show the transmit freuqency and DR.
...	...	@@ -312,9 +312,6 @@
312	312	* Gateway traffic (from server UI) to shows the data exchange between gateway and server.
313	313	* End Node traffic (from server UI) to shows end node activity in server.
314	314
315		-
316		-
317		-
318	318	= 6. Downlink Issue ~-~- Packet REJECTED, unsupported frequency =
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320	320	(((