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From version < 1.3 >
edited by Xiaoling
on 2022/05/17 15:16
To version < 1.2 >
edited by Xiaoling
on 2022/05/17 15:15
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1 -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.
2 -
3 -Below is the definition for the AT+CSQ
4 -
5 -[[image:https://wiki.dragino.com/images/thumb/5/5d/NB-IoT-CSQ_11.png/600px-NB-IoT-CSQ_11.png||height="644" width="600"]]
6 -
7 -CSQ Definition
8 -
9 -In this case, you can check:
10 -
11 -* Whether the antenna connection is good.
12 -* Whether you use a valid SIM Card
13 -* Whether you the SIM card place correctly.
14 -* Whether the NB-IoT Network you use match the End Device Module support network.
15 -* Whether you have select the correct band for your operator. See [[Specify_NB-IoT_Band>>url:https://wiki.dragino.com/index.php/Specify_NB-IoT_Band]]
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