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Changes for page Debug NB-IoT Connection

Last modified by Xiaoling on 2024/08/19 16:09
From version 7.6
edited by Xiaoling
on 2023/04/21 11:37
Change comment: There is no comment for this version
To version 1.2
edited by Xiaoling
on 2022/05/17 15:11
Change comment: There is no comment for this version

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1 -= **For BC95-G** =
1 += For BC95-G =
2 2  
3 -----
3 +~1. Check the reason why you can't access the network:
4 4  
5 +1) AT+CEREG=5
5 5  
6 -(% style="color:blue" %)**1. Check the reason why you can't access the network:**
7 +2) AT+CEREG? ~/~/This process may be longer, please repeat the input
7 7  
8 -(% style="color:#037691" %)**1) AT+CEREG=5**
9 +3) Mainly check the two parameters cause_type and reject_case
9 9  
10 -(% style="color:#037691" %)**2) AT+CEREG?**  (%%) ~/~/  This process may be longer, please repeat the input
11 +[[image:https://wiki.dragino.com/images/1/19/BC-95-G1.png||alt="BC-95-G1.png" height="366" width="558"]]
11 11  
12 -(% style="color:#037691" %)**3) Mainly check the two parameters (% style="color:red" %)cause_type and (% style="color:red" %)reject_case**
13 +2. Network access operation:
13 13  
15 +1) AT+CFUN=0
14 14  
15 -[[image:image-20220530093747-3.png]]
17 +2) AT+NBAND=X ~/~/X means the local frequency band number
16 16  
19 +3) AT+NRB
17 17  
18 -(% style="color:blue" %)**2. Network access operation:**
21 +4) After waiting for a period of time, you can use AT+CSQ to query the network access
19 19  
20 -(% style="color:#037691" %)1) AT+CFUN=0
23 +[[image:https://wiki.dragino.com/images/2/24/BC-95-G2.png||alt="BC-95-G2.png" height="365" width="558"]]
21 21  
22 -(% style="color:#037691" %)2) AT+NBAND=X  (%%) ~/~/  X means the local frequency band number
25 +Remarks:
23 23  
24 -(% style="color:#037691" %)3) AT+NRB
25 -
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
27 -
28 -
29 -[[image:image-20220530093821-4.png]]
30 -
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
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