Cannot get connection with LE910C4-NF

[Mark Deneen]

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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