Cannot get connection with LE910C4-NF

[Fernando B]

(Forgot to hit reply all for the mailing list) Thanks Mark, I wasn't aware
of the initial bearer option. I tried changing per your suggestion and it
didn't work. I replaced broadband with our custom apn instead and that
worked.

On Thu, Oct 19, 2023, 9:12 PM Mark Deneen <mdeneen at gmail.com> wrote:

> Hey Fernando,
>
> Try changing your initial bearer to "broadband" instead of nxtgenphone.
> I'm pretty sure that nxtgenphone stopped working with the 3g sunset, but
> your module still has it baked into the firmware.
>
>
>
>
>
> On Thu, Oct 19, 2023, 16:52 Fernando B <fredz0003 at gmail.com> wrote:
>
>> Good day,
>>
>> Looking for some guidance on how to troubleshoot this, I have a Debian 11
>> with LE910C4-NF which we use with two hardware sim slots, so the active
>> slot is always on slot 1 as far as mmcli is concerned. This vendor provides
>> a cli to switch slots. I can switch to slot 2 for verizon and make a
>> connection just fine with modemmanager. However on slot 1 with att, it just
>> timeout. Even if I do verbose there isn't much information to go on. The
>> strength shows 75%.
>>
>> I have an enterprise booster antenna, so I should be able to connect. On
>> Debian 9 with a Sierra modem with qmi I can connect with att with
>> sudo mmcli -m 0 --simple-connect='apn=our.custom.apn,ip-type=ipv4v6'
>>
>> moxa at hostname:~$ mmcli -m 10
>>   ----------------------------------
>>   General  |                   path:
>> /org/freedesktop/ModemManager1/Modem/10
>>            |              device id:
>> a411abc5574ab456d4cd12c8decfcb87819a4b37
>>   ----------------------------------
>>   Hardware |           manufacturer: Telit
>>            |                  model: LE910C4-NF
>>            |      firmware revision: 25.20.668  1  [Mar 20 2020 12:00:00]
>>            |         carrier config: default
>>            |           h/w revision: 1.10
>>            |              supported: gsm-umts, lte
>>            |                current: gsm-umts, lte
>>            |           equipment id: 350344982749853
>>   ----------------------------------
>>   System   |                 device:
>> /sys/devices/platform/soc/30800000.bus/30b10000.usb/ci_hdrc.0/usb1/1-1
>>            |                drivers: qmi_wwan, option
>>            |                 plugin: Moxa-Telit-LE910CX
>>            |           primary port: cdc-wdm0
>>            |                  ports: cdc-wdm0 (qmi), ttyUSB4 (ignored),
>> ttyUSB5 (gps),
>>            |                         ttyUSB6 (at), ttyUSB7 (at), ttyUSB8
>> (ignored), wwan0 (net)
>>   ----------------------------------
>>   Status   |                   lock: sim-pin2
>>            |         unlock retries: sim-pin (3), sim-puk (10), sim-pin2
>> (3), sim-puk2 (10)
>>            |                  state: enabled
>>            |            power state: on
>>            |            access tech: lte
>>            |         signal quality: 100% (cached)
>>   ----------------------------------
>>   Modes    |              supported: allowed: 3g; preferred: none
>>            |                         allowed: 4g; preferred: none
>>            |                         allowed: 3g, 4g; preferred: 4g
>>            |                         allowed: 3g, 4g; preferred: 3g
>>            |                current: allowed: 2g, 3g, 4g; preferred: 4g
>>   ----------------------------------
>>   Bands    |              supported: utran-4, utran-5, utran-2, eutran-2,
>> eutran-4, eutran-5,
>>            |                         eutran-12, eutran-13, eutran-14,
>> eutran-66, eutran-71
>>            |                current: utran-4, utran-5, utran-2, eutran-2,
>> eutran-4, eutran-5,
>>            |                         eutran-12, eutran-13, eutran-14,
>> eutran-66, eutran-71
>>   ----------------------------------
>>   IP       |              supported: ipv4, ipv6, ipv4v6
>>   ----------------------------------
>>   3GPP     |                   imei: 350344982749853
>>            |          enabled locks: fixed-dialing
>>            |            operator id: 310260
>>            |           registration: idle
>>   ----------------------------------
>>   3GPP EPS |   ue mode of operation: csps-2
>>            |     initial bearer apn: nxtgenphone
>>            | initial bearer ip type: ipv4v6
>>   ----------------------------------
>>   SIM      |       primary sim path: /org/freedesktop/ModemManager1/SIM/8
>>            |         sim slot paths: slot 1:
>> /org/freedesktop/ModemManager1/SIM/8 (active)
>>            |                         slot 2: none
>>
>> moxa at moxa-tbbbb1182802:~$ sudo mmcli -m 10 --3gpp-scan --timeout=300
>> [sudo] password for moxa:
>>   ---------------------
>>   3GPP scan | networks: 311490 - 311 490 (lte, forbidden)
>>             |           313100 - 313 100 (lte, available)
>>             |           310260 - AT&T (lte, current)
>>             |           311480 - Verizon (lte, forbidden)
>>             |           310410 - AT&T (lte, available)
>>
>> Thank you,
>> Fernando B.
>>
>
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