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1		-**~ Contents:**
	1	+**~ Table of Contents:**
2	2
3	3	{{toc/}}
4	4
5		-= 1. Introduction =
6	6
	6	+
	7	+
	8	+= 1.  Introduction =
	9	+
	10	+
7	7	Notes for using Dragino Devices with TTN Stack3.
8	8
9	9
10		-= 2. Downlink =
11	11
	15	+= 2.  Downlink =
	16	+
	17	+
12	12	Use MQTT API for downlink: Reference: [[TTN Stack v3 MQTT reference>>url:https://thethingsstack.io/v3.1.0/guides/getting-started/mqtt/]]
13	13
14	14	(((
15		-**Download command is:**
	21	+(% style="color:blue" %)**Download command is:**
16	16	)))
17	17
18	18	(% class="box" %)
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21	21	)))
22	22
23	23	(((
24		-The MQTT command use (% style="color:#4f81bd" %)**-h,-p,-u,-P** (%%)options. We can find them in the website.
	30	+
	31	+
	32	+The MQTT command use (% style="color:blue" %)**-h,-p,-u,-P** (%%)options. We can find them in the website.
	33	+
	34	+
25	25	)))
26	26
27	27	[[image:image-20220526142338-3.png]]
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28	28
29	29	find -h : broker address , -p port and -u: user name
30	30
	41	+
31	31	[[image:image-20220526142307-2.png]]
32	32
33	33	find -P : Password
...	...	@@ -53,6 +53,7 @@
53	53
54	54	Gateway traffic for downstream
55	55
	67	+
56	56	[[image:image-20220526142616-7.png||height="579" width="1407"]]
57	57
58	58
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69	69
70	70	When you register the device in V2 and V3 with the same key and EUI, the device can only connect to V2.
71	71
72		-[[image:https://wiki.dragino.com/images/thumb/0/0d/V3v2.png/600px-V3v2.png||alt="V3v2.png" height="403" width="600"]]
	84	+[[image:image-20220526142914-10.png]]
73	73
74		-[[image:https://wiki.dragino.com/images/thumb/b/b9/V2v3.png/600px-V2v3.png||alt="V2v3.png" height="352" width="600"]]
	86	+[[image:image-20220526143018-11.png||height="619" width="1049"]]
75	75
76	76	If you want the device to connect to V3. You must change your key and EUI, or delete the device registered on V2.
77	77
	90	+
78	78	== 3.2 MIC Mismatch or MIC Failed ==
79	79
80	80	(((
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89	89	)))
90	90	)))
91	91
92		-[[image:https://wiki.dragino.com/images/thumb/d/dd/MIC_mismatch.png/600px-MIC_mismatch.png||height="208" width="600"]]
	105	+[[image:image-20220526143057-12.png]]
93	93
94	94	MIC Mismatch

image-20220526143057-12.png

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	1	+XWiki.Xiaoling

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