Hello,
I have a BC95-G which generally works fine and sends messages properly. However every now and then the CEREG value suddenly changes from 5 (registered, roaming) to 0 (not registered, not trying to be registered). And then often goes to 2 (trying to register). This happens in regions with good coverage. After that, when trying to send via UDP, the ERROR value is returned.
Does anyone have any idea what might be going on? Many thanks!
hi,brixton:
I would like to know if you are in roaming border area, please perform AT+NUESTATS? to Confirm whether the base station cell registered by the terminal changes before and after the status change.
Signal power corresponding RSRP equal to -110.9dBm,and ECL:2;RSRQ:-20.9,the signal strength is very weak,the signal is approaching the edge of the terminal access signal.return +CEREG:2 is understandable;but Roaming doesnāt show up.If you need to dig deeper, you need to grab the Log.
I didnāt quite understand what you meant with āgrab the logā, so Iāve set āāAT+NLOGLEVEL=APPLICATION,VERBOSEāā. However that doesnāt give any extra information.
Currently I have a MCU connected to the BC95-G via the MAIN UART connection, but to see the logs Iām guessing Iāll need to make a connection to the DEBUG UART? Iāll will do that now to create some more insight.
However today Iām at a different geographical location than yesterday, and the network coverage seems to be better here. And so far the CEREG āstatā value is still at 5, so Iām not sure how useful this logging information is.
hi,brixton:
LOG analysis shows that the PLMN of the current module registered network is 204 04.Please consult the PLMN configured for the SIM card by your SIM card provider to confirm whether the SIM card is in roaming state