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Last modified by Mengting Qiu on 2025/07/03 18:55
From version 102.1
edited by Edwin Chen
on 2023/08/16 20:21
Change comment: There is no comment for this version
To version 105.1
edited by Edwin Chen
on 2023/11/05 08:49
Change comment: There is no comment for this version

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16 16  
17 17  = 2. Attach Network =
18 18  
19 +== 2.1 General Configure to attach network ==
19 19  
21 +
20 20  To attache NB-IoT sensors to NB-IoT Network, You need to:
21 21  
22 22  1. Get a NB-IoT SIM card from Service Provider. (Not the same as the SIM card we use in mobile phone)
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40 40  |(% style="width:117px" %)China Telecom|(% style="width:151px" %)ctnb|(% style="width:474px" %)China Mainland|(% style="width:135px" %)
41 41  
42 42  
45 +== 2.2 Speed Up Network Attach time ==
46 +
47 +
48 +BC660K-GL supports multi bands (% style="color:blue" %)**B1/B2/B3/B4/B5/B8/B12/B13/B14/B17/B18/B19/B20/B25/B28/B66/B70/B85. **(%%) It will search one by one and try to attach, this will take a lot of time and even cause attach fail. User can lock the band to specify band for its operator to make this faster.
49 +
50 +(% style="color:#037691" %)**AT+QBAND?       ** (%%) ~/~/ Check what is the current used frequency band
51 +
52 +(% style="color:#037691" %)**AT+QBAND=1,4    ** (%%) ~/~/ Set to use 1 frequency band. Band4
53 +
54 +(% style="color:#037691" %)**AT+QBAND=2,8,20**  (%%) ~/~/ Set to use 2 frequency bands. Band 8 and Band 20
55 +
56 +
57 +See bands used for different provider:** [[NB-IoT Deployment , Bands, Operator list>>http://wiki.dragino.com/xwiki/bin/view/Main/NB-IoT%20Deployment%20%2C%20Bands%2C%20Operator%20list/]]**
58 +
59 +
43 43  = 3. Configure to connect to different servers =
44 44  
45 45  == 3.1 General UDP Connection ==
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184 184  
185 185  ==== 3.3.3.2 Uplink Examples ====
186 186  
204 +
187 187  [[image:image-20230816201942-1.png]]
188 188  
189 189  For SE01-NB