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Changes for page Debug NB-IoT Connection

Last modified by Xiaoling on 2024/08/19 16:09
From version 3.1
edited by Xiaoling
on 2022/05/30 09:28
Change comment: Uploaded new attachment "image-20220530092747-2.png", version {1}
To version 7.4
edited by Xiaoling
on 2022/07/22 17:01
Change comment: There is no comment for this version

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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 +----
4 4  
5 +
6 +(% style="color:blue" %)**1. Check the reason why you can't access the network:**
7 +
5 5  1) AT+CEREG=5
6 6  
7 -2) AT+CEREG? ~/~/This process may be longer, please repeat the input
10 +2) AT+CEREG?  ~/~/This process may be longer, please repeat the input
8 8  
9 9  3) Mainly check the two parameters cause_type and reject_case
10 10  
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 -2. Network access operation:
15 +[[image:image-20220530093747-3.png]]
14 14  
17 +
18 +
19 +(% style="color:blue" %)**2. Network access operation:**
20 +
15 15  1) AT+CFUN=0
16 16  
17 -2) AT+NBAND=X ~/~/X means the local frequency band number
23 +2) AT+NBAND=X  ~/~/X means the local frequency band number
18 18  
19 19  3) AT+NRB
20 20  
21 21  4) After waiting for a period of time, you can use AT+CSQ to query the network access
22 22  
23 -[[image:https://wiki.dragino.com/images/2/24/BC-95-G2.png||alt="BC-95-G2.png" height="365" width="558"]]
24 24  
25 -Remarks:
30 +[[image:image-20220530093821-4.png]]
26 26  
32 +
33 +
34 +(% style="color:blue" %)**Remarks:**
35 +
27 27  ~1. The operating voltage of the SIM card used must be less than 3.0V
28 28  
29 29  2. The network access time varies with the signal strength
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