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1		-{{box cssClass="floatinginfobox" title="**Contents**"}}
	1	+**Contents： **
	2	+
2	2	{{toc/}}
3		-{{/box}}
4	4
	5	+
	6	+
	7	+
5	5	= **1. Overview** =
6	6
7	7	(((
...	...	@@ -12,20 +12,20 @@
12	12	[[Point to Point Software for LT-22222-L>>https://github.com/dragino/LT-22222-L]].
13	13	)))
14	14
15		-== ==
16	16
17	17	= **2. Features for this firmware** =
18	18
19		-
20	20	== **2.1  Point To Point** ==
21	21
22	22	=== **2.1.1 Overview** ===
23	23
	25	+
24	24	[[image:image-20220602111219-1.png||height="472" width="972"]]
25	25
26	26
27	27	=== **2.2.2 Configure** ===
28	28
	31	+
29	29	(% border="1" style="background-color:#f7faff; color:black; width:500px" %)
30	30	|=**A's configuration**|=**B's configuration**
31	31	|AT+GROUPMOD=0|AT+GROUPMOD=0
...	...	@@ -39,8 +39,7 @@
39	39	|AT+DI2TORO2=2|AT+DI2TORO2=2
40	40
41	41
42		-(% class="wikigeneratedid" %)
43		-2.2.3 Serial port display
	45	+=== **2.2.3 Serial port display** ===
44	44
45	45
46	46	(% class="wikigeneratedid" %)
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54	54	If the sender does not get the ACK reply from the receiver, it will retransmit up to 4 times, each interval is 6 seconds, and the UplinkCounter of the retransmission will not increase.
55	55
56	56
57		-
58	58	== **2.2  Point To Mult-Point ** ==
59	59
	61	+=== **2.2.1 Overview** ===
60	60
61	61
	64	+[[image:1654152390874-192.png]]
62	62
63	63
	67	+=== **2.2.2  Configure** ===
	68	+
	69	+
	70	+(% style="color:#4f81bd" %)**Configuration of the TX group:**
	71	+
	72	+AT+GROUPMOD=0,2
	73	+
	74	+AT+TXCHS=868700000
	75	+
	76	+AT+RXCHS=869000000
	77	+
	78	+AT+TRIG1=2,50
	79	+
	80	+AT+TRIG2=2,50
	81	+
	82	+AT+DI1TODO1=1
	83	+
	84	+AT+DI1TORO1=1
	85	+
	86	+AT+DI2TODO2=1
	87	+
	88	+AT+DI2TORO2=1
	89	+
	90	+
	91	+(% style="color:#4f81bd" %)**Configuration for RX group number 1:**
	92	+
	93	+AT+GROUPMOD=1,1
	94	+
	95	+AT+TXCHS=869000000
	96	+
	97	+AT+RXCHS=868700000
	98	+
	99	+
	100	+(% style="color:#4f81bd" %)**Configuration for RX group number 2:**
	101	+
	102	+AT+GROUPMOD=1,2
	103	+
	104	+AT+TXCHS=869000000
	105	+
	106	+AT+RXCHS=868700000
	107	+
	108	+
	109	+=== **2.2.3 Serial port display** ===
	110	+
	111	+
	112	+[[image:image-20220602144747-1.png]]
	113	+
	114	+
	115	+[[image:image-20220602144747-2.png]]
	116	+
64	64	(((
65		-
	118	+If the TX group does not receive all the ACK replies from the RX group, it will retransmit up to 4 times, each time interval is 30 seconds, and the retransmission UplinkCounter will not increase.
66	66	)))
67	67
68	68

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