Hello,
On IoT module, we are using RAK3172+RAK19007
And we were using an external GSM module (SimCOM A7670E) connected through UART1.
Then we decide to switch to RAK13101 (Quectel MC20)
Initialisation of the module is OK and we can communicate with the Quectel MC20 through AT command :
ATI
Quectel_Ltd
Quectel_MC20
Revision: MC20CER01A04
OK
We are based on Switzerland, with a SIM Card of “Salt” operator.
With this SIM card, when sending a AT+COPS=? command we got :
On SimCOM modem :
AT+COPS=?
+COPS: (2,"Salt","Salt","22803",7),(1,"Orange F","Orange","20801",0),(1,"F SFR","SFR","20810",0),(1,"Sunrise","Sunrise","22802",7),(1,"Swisscom","Swisscom","22801",7),,(0,1,2,3,4),(0,1,2)
On RAK13101 :
AT+COPS=?
+COPS: (1,"20801","20801","20801"),(1,"SFR","SFR","20810"),(1,"Bouygues Telecom","BYTEL","20820"),,(0-4),(0-2)
it displaying only roaming (France) operator
And we cannot register to home network (salt) with the MC20 modem.
AT+CREG?
+CREG: 0,5
AT+CPOL?
+CPOL: 1,2,"20801"
+CPOL: 2,2,"29502"
AT+QENG=2
+QENG: 0,208,01,510b,2321,10,39,-96,56,56,5,0,x,x,x,x,x,x,x
(of course, we are at the same location, with the same antenna for testing those 2 modules)
Do you have any ideas about the reason of this limitation ?
Is there any settings to set on MC20 modem to allow Switzerland operator ?