Skip to Content

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 7.7
edited by Xiaoling
on 2023/04/21 11:45
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -1,35 +1,38 @@
1 1  = **For BC95-G** =
2 2  
3 +----
3 3  
4 -**~1. Check the reason why you can't access the network:**
5 5  
6 -1) AT+CEREG=5
6 +(% style="color:blue" %)**1. Check the reason why you can't access the network:**
7 7  
8 -2) AT+CEREG? ~/~/This process may be longer, please repeat the input
8 +(% style="color:#037691" %)**1) AT+CEREG=5**
9 9  
10 -3) Mainly check the two parameters cause_type and reject_case
10 +(% style="color:#037691" %)**2) AT+CEREG?**  (%%) ~/~/  This process may be longer, please repeat the input
11 11  
12 +(% style="color:#037691" %)**3) Mainly check the two parameters **(% style="color:red" %)**cause_type and reject_case**
12 12  
14 +
13 13  [[image:image-20220530093747-3.png]]
14 14  
15 15  
16 -**2. Network access operation:**
18 +(% style="color:blue" %)**2. Network access operation:**
17 17  
18 -1) AT+CFUN=0
20 +(% style="color:#037691" %)**1) AT+CFUN=0**
19 19  
20 -2) AT+NBAND=X ~/~/X means the local frequency band number
22 +(% style="color:#037691" %)**2) AT+NBAND=X**  (%%) ~/~/  X means the local frequency band number
21 21  
22 -3) AT+NRB
24 +(% style="color:#037691" %)**3) AT+NRB**
23 23  
24 -4) After waiting for a period of time, you can use AT+CSQ to query the network access
26 +(% style="color:#037691" %)**4) After waiting for a period of time, you can use **(% style="color:red" %)**AT+CSQ **(%%)**to query the network access**
25 25  
28 +
26 26  [[image:image-20220530093821-4.png]]
27 27  
28 28  
29 -**Remarks:**
32 +(% style="color:blue" %)**Remarks:**
30 30  
31 -~1. The operating voltage of the SIM card used must be less than 3.0V
34 +~1. The operating voltage of the SIM card used must be less than 3.0V.
32 32  
33 -2. The network access time varies with the signal strength
36 +2. The network access time varies with the signal strength.
34 34  
35 -3. If you have not been able to access the network, please try to access the network manually
38 +3. If you have not been able to access the network, please try to access the network manually.