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39	39
40	40	We need to input above keys in LG308 and enable ABP decryption.
41	41
42		-[[image:https://wiki.dragino.com/images/thumb/5/55/LG308_MQTT_1.png/600px-LG308_MQTT_1.png||height="329" width="600"]]
	42	+[[image:image-20220527161119-1.png]]
43	43
44	44	Input the ABP keys in LG308
45	45
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52	52	We can see the log of LG308 to know this packet arrive
53	53	)))
54	54
55		-[[image:https://wiki.dragino.com/images/thumb/1/16/ABP_DECODE_2.png/600px-ABP_DECODE_2.png||height="205" width="600"]]
	55	+[[image:image-20220527161149-2.png]]
56	56
57	57	LG308 log by "logread -f" command
58	58
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62	62	(% class="box" %)
63	63	(((
64	64	root@dragino-1d25dc:~~# hexdump /var/iot/channels/2602111D
65		-0000000 (% class="mark" %)**4646 4646 4646 3946 3030 3030 3030 3546**(%%)      ~-~-> Got RSSI and SNR
66		-0000010 (% class="mark" %)**cc0c 0b63 0266 017f ff7f ff00 **(%%) ~-~-> Payload
	65	+0000000 (% style="color:#037691" %)**4646 4646 4646 3946 3030 3030 3030 3546**(%%)      ~-~-> Got RSSI and SNR
	66	+0000010 (% style="color:#037691" %)**cc0c 0b63 0266 017f ff7f ff00 **(%%) ~-~-> Payload
67	67	000001c
68	68	)))
69	69
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73	73
74	74	(% class="box" %)
75	75	(((
76		-(% class="mark" %)**Notice 1**(%%): The data file stored in LG308 for the end node is bin file. If the end node sends ASCII string to gateway, the output will as below:
77		-in LGT92, use **AT+SEND=12**:hello world to send ASCII string
	76	+(% style="color:red" %)**Notice 1**(%%): The data file stored in LG308 for the end node is bin file. If the end node sends ASCII string to gateway, the output will as below:
	77	+in LGT92, use **(% style="color:#037691" %)AT+SEND=12:hello world** (%%)to send ASCII string
78	78	root@dragino-1d25dc:~~# hexdump /var/iot/channels/2602111D
79	79	0000000 4646 4646 4646 3946 3030 3030 3030 3546
80	80	0000010 6865 6c6c 6f20 776f 726c 6400      ~-~-> Got ASCII code "hello world"
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83	83
84	84	(% class="box" %)
85	85	(((
86		-(% class="mark" %)**Notice 2**(%%): The upstream payload length should match the LoRaWAN length requirement (max length depends on Frequency and DR), otherwise the gateway can't decode the payload.
	86	+(% style="color:#037691" %)**Notice 2**(%%): The upstream payload length should match the LoRaWAN length requirement (max length depends on Frequency and DR), otherwise the gateway can't decode the payload.
87	87	)))
88	88
	89	+
89	89	=== 2.2.1 Decode Method ===
90	90
91		-The decode methods: **ASCII String, Decode_LHT65** doesn't affect how the sensor data is stored, they are to define how should the sensor data to be sent.
	92	+The decode methods: **(% style="color:#037691" %)ASCII String, Decode_LHT65**(%%) doesn't affect how the sensor data is stored, they are to define how should the sensor data to be sent.
92	92
93	93	For example we have a LHT65 , works in ABP mode and gateway successful get the data, which are:
94	94

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