Olimex BC66 Registration keep getting denied

[PepeTheFrog]

Hi,

I have an Olimex BC66 Dev Kit.
Sim: Vodafone Italy NB-IOT that operates on band 20. MCC: 22210

I try to attach the bc66 to network using the following commands.

Code Select Expand

AT+QSCLK=0
ATE1
AT+CSCON=1
AT+QBAND=1,20
AT+CFUN=0
AT+QCGDEFCONT="IP","m2m.vodafone.it"
AT+QRST=1
AT+QSCLK=0
ATE1
AT+CSCON=1

but I get the following results:

Code Select Expand

F1: 0000 0000

V0: 0000 0000 [0001]

00: 0006 000C

01: 0000 0000

U0: 0000 0001 [0000]

T0: 0000 00B4

Leaving the BROM



RDY

+CFUN: 1

+CPIN: READY

+CEREG: 2,,,,,0,0
AT+QSCLK=0

OK
ATE1

OK
AT+CSCON=1

OK

+CSCON: 1

+CSCON: 0

+CSCON: 1

+CEREG: 3,,,,,0,15

+CSCON: 0

+CSCON: 1

+CSCON: 0

+CEREG: 3,,,,,0,14

+CSCON: 1

+CSCON: 0

+CSCON: 1

+CSCON: 0
   
+CSCON: 1

+CSCON: 0

+CSCON: 1

+CEREG: 3,,,,,0,15

+CSCON: 0

+CSCON: 1

+CSCON: 0

+CEREG: 3,,,,,0,14

As you can see the registration keep getting denied ( stat value: 3 ).

I've tried any possible thing on earth and made sure that the SIM was OK by calling  the operator, which confirmed to me that everything was alright.

Any possible idea or tip? I will try to flash the A11 firmware on the dev kit but Quectel told me that this would not solve the problem. Any tip is appreciated

Edit: the APN is "m2m.vodafone.it" which is correct

[williamshane]

Hi,

I have an Olimex BC66 Dev Kit.
Sim: Vodafone Italy NB-IOT that operates on band 20. MCC: 22210

I try to attach the bc66 to network using the following commands.

Code Select Expand

AT+QSCLK=0
ATE1
AT+CSCON=1
AT+QBAND=1,20
AT+CFUN=0
AT+QCGDEFCONT="IP","m2m.vodafone.it"
AT+QRST=1
AT+QSCLK=0
ATE1
AT+CSCON=1

but I get the following results:

Code Select Expand

F1: 0000 0000

V0: 0000 0000 [0001]

00: 0006 000C

01: 0000 0000

U0: 0000 0001 [0000]

T0: 0000 00B4

Leaving the BROM



RDY

+CFUN: 1

+CPIN: READY

+CEREG: 2,,,,,0,0
AT+QSCLK=0

OK
ATE1

OK
AT+CSCON=1

OK

+CSCON: 1

+CSCON: 0

+CSCON: 1

+CEREG: 3,,,,,0,15

+CSCON: 0

+CSCON: 1

+CSCON: 0

+CEREG: 3,,,,,0,14

+CSCON: 1

+CSCON: 0

+CSCON: 1

+CSCON: 0
   
+CSCON: 1

+CSCON: 0

+CSCON: 1

+CEREG: 3,,,,,0,15

+CSCON: 0

+CSCON: 1

+CSCON: 0

+CEREG: 3,,,,,0,14

As you can see the registration keep getting denied ( stat value: 3 geometry dash ).

I've tried any possible thing on earth and made sure that the SIM was OK by calling  the operator, which confirmed to me that everything was alright.

Any possible idea or tip? I will try to flash the A11 firmware on the dev kit but Quectel told me that this would not solve the problem. Any tip is appreciated

Edit: the APN is "m2m.vodafone.it" which is correct

Usually, the "+CEREG: 3" response means that the device is attempting to register on the network but is being refused access. Network coverage, signal strength, and proper network settings are some of the aspects that can impact registration in NB-IoT (Narrowband Internet of Things) networks.

You can attempt the following troubleshooting steps:

Verify Signal Strength: Make sure the gadget has a strong enough signal to establish a connection with the NB-IoT network. The "+CSQ" command can be used to measure the strength of the signal.

 A+C
To ensure a steady connection, make sure the signal strength is appropriate.

Network settings: Check to see that the Vodafone Italy NB-IoT MCC (Mobile Country Code), MNC (Mobile Network Code), and other network-related settings are set correctly. You stated that the MCC for Vodafone Italy is 222; nevertheless, please confirm that the MNC is correct by checking it again.

 AT PLUS COPS?
Make sure that the automated network selection is enabled.

 AT+COPS equals zero.