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...	...	@@ -422,28 +422,20 @@
422	422	downlink
423	423
424	424	(((
425		-(((
426	426	If you want to get a successful reply to send downlink in TTN v3. You need to set the response level.
427	427	)))
428		-)))
429	429
430	430	(((
431		-(((
432	432	If the equipment uses CLASS A. You can set AT+RPL=2 or send the downlink command: 2102
433	433	)))
434		-)))
435	435
436	436	(((
437		-(((
438	438	If the equipment uses CLASS C. You can set AT+RPL=4 or send the downlink command: 2104
439	439	)))
440		-)))
441	441
442	442	(((
443		-(((
444	444	When the device successfully receives the downlink, the server will receive a confirmation packet of 00.
445	445	)))
446		-)))
447	447
448	448	[[image:https://wiki.dragino.com/images/thumb/d/d9/Downlink_54.png/600px-Downlink_54.png||height="127" width="600"]]
449	449
...	...	@@ -453,7 +453,7 @@
453	453
454	454	(((
455	455	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.
456		-\\If problem not solve, and you need dragino remote support, please follow to this document: [[TTN Support instruction>>url:https://www.dragino.com/downloads/index.php?dir=&file=TTNv3_Support_Guide.pdf]](% style="color:red" %) **If user has checked below steps and still can't solve the problem, please send us (support @ dragino.com) the screenshots for each step to check. They include:**
	448	+\\If problem not solve, and you need dragino remote support, please follow to this document: [[TTN Support instruction>>url:https://www.dragino.com/downloads/index.php?dir=&file=TTNv3_Support_Guide.pdf]] If user has checked below steps and still can't solve the problem, please send us (support @ dragino.com) the screenshots for each step to check. They include:
457	457	)))
458	458
459	459	* End node is connected to serial port to show the Join frequency and DR. (If possible)
...	...	@@ -481,12 +481,8 @@
481	481
482	482	**2. Gateway packet traffic in gateway web or ssh. we can check:**
483	483
484		-* (((
485		-If the gateway receive the Join request packet from sensor? (If this fail, check if the gateway and sensor works on the match frequency)
486		-)))
487		-* (((
488		-If the gateway gets the Join Accept message from server and transmit it via LoRa?
489		-)))
	476	+* If the gateway receive the Join request packet from sensor? (If this fail, check if the gateway and sensor works on the match frequency)
	477	+* If the gateway gets the Join Accept message from server and transmit it via LoRa?
490	490
491	491	[[image:https://wiki.dragino.com/images/thumb/1/1c/OTAA_Join-2.png/600px-OTAA_Join-2.png||height="325" width="600"]]
492	492
...	...	@@ -495,15 +495,9 @@
495	495
496	496	**3. Gateway Traffic Page in LoRaWAN Server**
497	497
498		-* (((
499		-If the Join Request packet arrive the gateway traffic in server? If not, check the internet connection and gateway LoRaWAN server settings.
500		-)))
501		-* (((
502		-If the server send back a Join Accept for the Join Request? if not, check if the keys from the device match the keys you put in the server, or try to choose a different server route for this end device.
503		-)))
504		-* (((
505		-If the Join Accept message are in correct frequency? If you set the server to use US915 band, and your end node and gateway is EU868, you will see the Join Accept message are in US915 band so no possible to Join success.
506		-)))
	486	+* If the Join Request packet arrive the gateway traffic in server? If not, check the internet connection and gateway LoRaWAN server settings.
	487	+* If the server send back a Join Accept for the Join Request? if not, check if the keys from the device match the keys you put in the server, or try to choose a different server route for this end device.
	488	+* If the Join Accept message are in correct frequency? If you set the server to use US915 band, and your end node and gateway is EU868, you will see the Join Accept message are in US915 band so no possible to Join success.
507	507
508	508	[[image:https://wiki.dragino.com/images/thumb/d/da/LoRaWAN_Communication_Debug22.png/600px-LoRaWAN_Communication_Debug22.png||height="268" width="600"]]
509	509