1 year, 8 months 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

Just came across this, and I know it was over a year ago, but figure I'd add anyway. The 01B in the part number refers to the firmware flashed onto the device by the manufacturer. There are different firmware versions for different network providers.

For example, I use this module for connecting to Verizon's Cat-M1 network. For this, we purchase modules ending in 02b (ie: the verizon firmware).

I'm able to use modified version of ublox-cellular-base to program the module using the Mbed firmware. So it's definitely possible. I may post the updated library, but it's not very clean yet, as I'm just testing at the moment. Hopefully ublox will release an official update to their mbed library with R410M support.

posted by Alejandro Sklar 24 Jun 2019

Yes it is some time since we was fighting with this problem. We proceeded with a SARA-U201 3G solution. I just started investigation of R410-02B with the u-blox developer board https://os.mbed.com/platforms/ublox-C030-R410M/

The problem back then was our esim didn’t support LTE-M in the US. This is changed now and we are trying once more. Currently we are investigating NB-IOT in EU with the updated mbed u-blox library. They are supporting the R410M board now.

posted by Jens-Ole Graulund 25 Jun 2019
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1 Answer

1 year, 8 months 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