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Changes for page Debug NB-IoT Connection

Last modified by Xiaoling on 2024/08/19 16:09
From version 1.1
edited by Xiaoling
on 2022/05/17 15:10
Change comment: There is no comment for this version
To version 9.1
edited by David Huang
on 2023/09/28 16:17
Change comment: There is no comment for this version

Summary

Details

Page properties
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1 -XWiki.Xiaoling
1 +XWiki.David
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1 -{{box cssClass="floatinginfobox" title="**Contents**"}}
2 -{{toc/}}
3 -{{/box}}
1 += **For BC95-G** =
4 4  
5 -= Paragraph 1 =
3 +----
6 6  
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8 8  
9 -== Sub-paragraph ==
6 +(% style="color:blue" %)**1. Check the reason why you can't access the network:**
10 10  
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8 +(% style="color:#037691" %)**1) AT+CEREG=5**
12 12  
13 -== Sub-paragraph ==
10 +(% style="color:#037691" %)**2) AT+CEREG?**  (%%) ~/~/  This process may be longer, please repeat the input
14 14  
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12 +(% style="color:#037691" %)**3) Mainly check the two parameters **(% style="color:red" %)**cause_type and reject_case**
16 16  
17 -=== Sub-sub paragraph ===
18 18  
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15 +[[image:image-20220530093747-3.png]]
20 20  
21 21  
22 -= Paragraph 2 =
18 +(% style="color:blue" %)**2. Network access operation:**
23 23  
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20 +(% style="color:#037691" %)**1) AT+CFUN=0**
25 25  
26 -== Sub-paragraph ==
22 +(% style="color:#037691" %)**2) AT+NBAND=X**  (%%) ~/~/  X means the local frequency band number
27 27  
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24 +(% style="color:#037691" %)**3) AT+NRB**
29 29  
30 -== Sub-paragraph ==
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**
31 31  
32 -Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
28 +
29 +[[image:image-20220530093821-4.png]]
30 +
31 +
32 +(% style="color:blue" %)**Remarks:**
33 +
34 +~1. The operating voltage of the SIM card used must be less than 3.0V.
35 +
36 +2. The network access time varies with the signal strength.
37 +
38 +3. If you have not been able to access the network, please try to access the network manually.
39 +
40 +
41 +(% style="color:blue" %)**3. Check the PS Attach or Detach  **
42 +
43 +(% style="color:#037691" %)**1) AT+CGATT?**
44 +
45 +(% style="color:#037691" %)**Response
46 ++CGATT: <state>
47 +OK**
48 +
49 +(% style="color:#037691" %)**Write Command
50 +AT+CGATT=<state>**
51 +
52 +(% style="color:#037691" %)**<state> Integer type. Indicates the state of PS attachment.
53 +0 Detached
54 +1 Attached**(%%)
55 +
56 +
57 +**Note:Generally, when registering with an operator, attaching GPRS is automatic, and CGATT can manually attach the network.**
58 +
59 +
60 +(% style="color:blue" %)**4. Check the signaling connection status:**
61 +
62 +(% style="color:#037691" %)**1) AT+CSCON?**
63 +
64 +(% style="color:#037691" %)**Response
65 ++CSCON: <n>,<mode>
66 +OK**
67 +
68 +(% style="color:#037691" %)**<n> Enable/disable the URC. 
69 +0 Disable the URC
70 +1 Enable URC +CSCON: <mode> 
71 +<mode>Signaling connection status.
72 +0 Idle
73 +1 Connected**
74 +
75 +
76 +(% style="color:blue" %)**5. Check the PDP Context Activate/Deactivate**
77 +
78 +(% style="color:#037691" %)**1) AT+CGACT?**
79 +
80 +(% style="color:#037691" %)**Response
81 +[+CGACT: <cid>,<state>]**
82 +
83 +(% style="color:#037691" %)**[+CGACT: <cid>,<state>]
84 +[…]
85 +OK**
86 +
87 +(% style="color:#037691" %)**<state> Integer type. The state of PDP context activation.
88 +0 Deactivated
89 +1 Activated
90 +<cid> Integer type. A numeric parameter which specifies a particular PDP context definition (see 
91 +AT+CGDCONT).**(%%)
92 +
93 +
94 +**Note:Note that having a cell ID attached to the network does not necessarily mean successful activation. For data exchange, such as initiating HTTP requests, activation is necessary to use them.**
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