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Last modified by Xiaoling on 2023/04/24 08:49
From version 1.2
edited by Xiaoling
on 2022/05/17 15:15
Change comment: There is no comment for this version
To version 5.4
edited by Xiaoling
on 2023/04/21 11:53
Change comment: There is no comment for this version

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1 += **Introduction** =
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3 +----
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5 +When you use NB-IoT module and run the command **AT+CSG=99,99**. It means the device doesn't attached to the NB-IoT network. If attached to network, the first 99 should be 2~~31.
6 +
7 +(((
8 +Below is the definition for the (% style="color:blue" %)**AT+CSQ**
9 +)))
10 +
11 +[[image:image-20220530094441-1.png]]
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13 +CSQ Definition
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17 +(% style="color:red" %)**In this case, you can check:**
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19 +* Whether the antenna connection is good.
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21 +* Whether you use a valid SIM Card
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23 +* Whether you the SIM card place correctly.
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25 +* Whether the NB-IoT Network you use match the End Device Module support network.
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27 +* Whether you have select the correct band for your operator. See [[Specify_NB-IoT_Band>>doc:Main.Specify NB-IoT Band.WebHome]]
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image-20220530094441-1.png
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1 +XWiki.Xiaoling
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