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Changes for page Debug NB-IoT Connection

Last modified by Xiaoling on 2024/08/19 16:09
From version 7.3
edited by Xiaoling
on 2022/07/22 17:00
Change comment: There is no comment for this version
To version 7.1
edited by Xiaoling
on 2022/05/30 10:22
Change comment: There is no comment for this version

Summary

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1 1  = **For BC95-G** =
2 2  
3 3  
4 -(% style="color:blue" %)**1. Check the reason why you can't access the network:**
4 +**~1. Check the reason why you can't access the network:**
5 5  
6 6  1) AT+CEREG=5
7 7  
8 -2) AT+CEREG?  ~/~/This process may be longer, please repeat the input
8 +2) AT+CEREG? ~/~/This process may be longer, please repeat the input
9 9  
10 10  3) Mainly check the two parameters cause_type and reject_case
11 11  
... ... @@ -13,24 +13,21 @@
13 13  [[image:image-20220530093747-3.png]]
14 14  
15 15  
16 +**2. Network access operation:**
16 16  
17 -(% style="color:blue" %)**2. Network access operation:**
18 -
19 19  1) AT+CFUN=0
20 20  
21 -2) AT+NBAND=X  ~/~/X means the local frequency band number
20 +2) AT+NBAND=X ~/~/X means the local frequency band number
22 22  
23 23  3) AT+NRB
24 24  
25 25  4) After waiting for a period of time, you can use AT+CSQ to query the network access
26 26  
27 -
28 28  [[image:image-20220530093821-4.png]]
29 29  
30 30  
29 +**Remarks:**
31 31  
32 -(% style="color:blue" %)**Remarks:**
33 -
34 34  ~1. The operating voltage of the SIM card used must be less than 3.0V
35 35  
36 36  2. The network access time varies with the signal strength