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Last modified by Xiaoling on 2023/04/24 08:49
From version 5.2
edited by Xiaoling
on 2022/07/22 17:06
Change comment: There is no comment for this version
To version 6.1
edited by Edwin Chen
on 2023/04/23 22:38
Change comment: Uploaded new attachment "image-20230423223628-1.png", version {1}

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1 +XWiki.Edwin
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1 += **Introduction** =
2 2  
3 -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.
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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.
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5 5  (((
6 6  Below is the definition for the (% style="color:blue" %)**AT+CSQ**
7 7  )))
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15 15  (% style="color:red" %)**In this case, you can check:**
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17 17  * Whether the antenna connection is good.
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18 18  * Whether you use a valid SIM Card
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19 19  * Whether you the SIM card place correctly.
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20 20  * Whether the NB-IoT Network you use match the End Device Module support network.
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21 21  * 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-20230423223628-1.png
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