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Last modified by Mengting Qiu on 2025/07/03 18:55
From version 102.2
edited by Xiaoling
on 2023/09/07 16:14
Change comment: There is no comment for this version
To version 104.4
edited by Xiaoling
on 2023/10/07 10:25
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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41 41  
42 42  
43 43  
46 +== 2.2 Speed Up Network Attach time ==
47 +
48 +
49 +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.
50 +
51 +(% style="color:#037691" %)**AT+QBAND?       ** (%%) ~/~/ Check what is the current used frequency band
52 +
53 +(% style="color:#037691" %)**AT+QBAND=1,4    ** (%%) ~/~/ Set to use 1 frequency band. Band4
54 +
55 +(% style="color:#037691" %)**AT+QBAND=2,8,20**  (%%) ~/~/ Set to use 2 frequency bands. Band 8 and Band 20
56 +
57 +
44 44  = 3. Configure to connect to different servers =
45 45  
46 46  == 3.1 General UDP Connection ==
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187 187  
188 188  ==== 3.3.3.2 Uplink Examples ====
189 189  
204 +
190 190  [[image:image-20230816201942-1.png]]
191 191  
192 192  For SE01-NB