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1 year, 1 month ago.

Cellular support for SARA-R410M-01B modem ?

We are having problems connecting to a US network with a SARA-R410M-01B.

Connecting to the network "fails" in UbloxCellularBase::nwk_registration with this info:

[INFO][UCB ]: Searching Network...
AT> AT+CREG=1
AT? OK%n
AT< 
AT= OK
AT> AT+CGREG=1
AT? OK%n
AT< 
AT= OK
AT> AT+CEREG=1
AT? OK%n
AT< 
AT= OK
AT> AT+COPS?
AT? +COPS: %*d%n
AT< 
AT= +COPS: 0
AT? OK%n
AT< 
AT= OK
AT> AT+CREG?
AT? OK%n
AT< 
AT! +CREG
[INFO][UCB ]: Circuit switched service denied
AT? OK%n
AT< 
AT= OK
AT> AT+CGREG?
AT? OK%n
AT< 
AT! +CGREG
[INFO][UCB ]: Packet switched service denied
AT? OK%n
AT< 
AT= OK
AT> AT+CEREG?
AT? OK%n
AT< 
AT! +CEREG
[INFO][UCB ]: EPS service denied

Question relating to:

Development team for u-blox positioning and wireless products
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1 Answer

1 year, 1 month ago.

The UbloxCellularBase library has not yet been update to include R410M support. There is an early version of R410M support on a branch of the UbloxCellularBase library here:

https://os.mbed.com/teams/ublox/code/ublox-cellular-base/rev/c4281fa79b8f/

,..which goes with an early version of R410M support in the UbloxATCellularInterface library here:

https://os.mbed.com/teams/ublox/code/ublox-at-cellular-interface/rev/cc41a8636f7e/

You can try these if you wish, no guarantees I'm afraid as we have not been able to test them properly. Our plan is to submit the changes for R410M support on the C030 board, which should happen in the next few days, then the changes to the support libraries will go in next week.

Thanks Rob I will test the early version and hope to see final versions soon.

posted by Jens-Ole Graulund 20 Feb 2018

Ok I am already using these libraries.

We are using the SARA-R410M-01B together with a Wireless logic esim. (http://www.wirelesslogic.com)

I suspect this modem will only work with an AT&T sim.

Do you have any knowledge of this ?

posted by Jens-Ole Graulund 20 Feb 2018

I've talked to the guys here who own the SARA-R410M side. They confirm that the SARA-R410M-01 module was designed to be an AT&T only device but that it will work with AT&T carrier partners, e.g. Bell Mobility. What we don't know is whether Wireless Logic is an AT&T partner. It is possible that whether you are connecting with Cat M1 or NBIoT may also have an impact.

In any case, the very specific nature of the error from the network, "service denied," suggests that you should have a conversation with the SIM provider.

posted by Rob Meades 20 Feb 2018

Our esim provider has confirmed that they can not support this specific u-blox module. Thanks for helping clarify the problem.

posted by Jens-Ole Graulund 22 Feb 2018

That's a shame. Thanks for commenting.

posted by Rob Meades 22 Feb 2018

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