Changes for page Debug NB-IoT Connection
Last modified by Xiaoling on 2024/08/19 16:09
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... ... @@ -1,36 +1,29 @@ 1 -= **For BC95-G**=1 += For BC95-G = 2 2 3 +~1. Check the reason why you can't access the network: 3 3 4 -(% style="color:blue" %)**1. Check the reason why you can't access the network:** 5 - 6 6 1) AT+CEREG=5 7 7 8 -2) AT+CEREG? 7 +2) AT+CEREG? ~/~/This process may be longer, please repeat the input 9 9 10 10 3) Mainly check the two parameters cause_type and reject_case 11 11 11 +[[image:https://wiki.dragino.com/images/1/19/BC-95-G1.png||alt="BC-95-G1.png" height="366" width="558"]] 12 12 13 - [[image:image-20220530093747-3.png]]13 +2. Network access operation: 14 14 15 - 16 - 17 -(% style="color:blue" %)**2. Network access operation:** 18 - 19 19 1) AT+CFUN=0 20 20 21 -2) AT+NBAND=X 17 +2) AT+NBAND=X ~/~/X means the local frequency band number 22 22 23 23 3) AT+NRB 24 24 25 25 4) After waiting for a period of time, you can use AT+CSQ to query the network access 26 26 23 +[[image:https://wiki.dragino.com/images/2/24/BC-95-G2.png||alt="BC-95-G2.png" height="365" width="558"]] 27 27 28 - [[image:image-20220530093821-4.png]]25 +Remarks: 29 29 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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