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Changes for page Debug NB-IoT Connection

Last modified by Xiaoling on 2024/08/19 16:09
From version 7.1
edited by Xiaoling
on 2022/05/30 10:22
Change comment: There is no comment for this version
To version 3.1
edited by Xiaoling
on 2022/05/30 09:28
Change comment: Uploaded new attachment "image-20220530092747-2.png", version {1}

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1 -= **For BC95-G** =
1 += For BC95-G =
2 2  
3 +~1. Check the reason why you can't access the network:
3 3  
4 -**~1. Check the reason why you can't access the network:**
5 -
6 6  1) AT+CEREG=5
7 7  
8 8  2) AT+CEREG? ~/~/This process may be longer, please repeat the input
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9 9  
10 10  3) Mainly check the two parameters cause_type and reject_case
11 11  
11 +[[image:https://wiki.dragino.com/images/1/19/BC-95-G1.png||alt="BC-95-G1.png" height="366" width="558"]]
12 12  
13 -[[image:image-20220530093747-3.png]]
13 +2. Network access operation:
14 14  
15 -
16 -**2. Network access operation:**
17 -
18 18  1) AT+CFUN=0
19 19  
20 20  2) AT+NBAND=X ~/~/X means the local frequency band number
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23 23  
24 24  4) After waiting for a period of time, you can use AT+CSQ to query the network access
25 25  
26 -[[image:image-20220530093821-4.png]]
23 +[[image:https://wiki.dragino.com/images/2/24/BC-95-G2.png||alt="BC-95-G2.png" height="365" width="558"]]
27 27  
25 +Remarks:
28 28  
29 -**Remarks:**
30 -
31 31  ~1. The operating voltage of the SIM card used must be less than 3.0V
32 32  
33 33  2. The network access time varies with the signal strength
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