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4	4	Below is the definition for the **AT+CSQ**
5	5	)))
6	6
7		-[[image:image-20220530094441-1.png]]
	7	+[[image:https://wiki.dragino.com/images/thumb/5/5d/NB-IoT-CSQ_11.png/600px-NB-IoT-CSQ_11.png||height="644" width="600"]]
8	8
9	9	CSQ Definition
10	10
11		-
12		-
13	13	In this case, you can check:
14	14
15	15	* Whether the antenna connection is good.
...	...	@@ -16,4 +16,4 @@
16	16	* Whether you use a valid SIM Card
17	17	* Whether you the SIM card place correctly.
18	18	* Whether the NB-IoT Network you use match the End Device Module support network.
19		-* Whether you have select the correct band for your operator. See [[Specify_NB-IoT_Band>>doc:Main.Specify NB-IoT Band.WebHome]]
	17	+* Whether you have select the correct band for your operator. See [[Specify_NB-IoT_Band>>http://8.211.40.43:8080/xwiki/bin/view/Main/Specify%20NB-IoT%20Band/]]