[fdo] Telit LE910-EU V2 fail to connect to private LTE network

[Paul Palitog]

Good day,

I am having trouble getting this modem to connect to our private LTE
network.

The debug log just return a generic Failure error and I'm not sure what the
problem is.

I was wondering if someone here could help me or has had the same problem.

I am using Modem Manager mmcli 1.6.4. The Telit module has firmware
version: 20.00.402.9-VZW.

Doing a simple connect with command:

mmcli -m 0 --simple-connect="apn=default"

Returns:

ModemManager[1800]: <debug> [1574719753.494250]
[../../ModemManager-1.6.4/src/mm-bearer-mbim.c:614] connect_set_ready():
Session ID '0': deactivated (IP type: ipv4)
ModemManager[1800]: <debug> [1574719753.495626]
[../../ModemManager-1.6.4/src/mm-base-bearer.c:578] connect_ready():
Couldn't connect bearer '/org/freedesktop/ModemManager1/Bearer/1': 'Failure'
ModemManager[1800]: <info>  [1574719753.499465]
[../../ModemManager-1.6.4/src/mm-iface-modem.c:1431]
__iface_modem_update_state_internal(): Modem
/org/freedesktop/ModemManager1/Modem/0: state changed (connecting ->
registered)
ModemManager[1800]: <debug> [1574719753.542321]
[../../ModemManager-1.6.4/src/mm-iface-modem-simple.c:221]
connect_bearer_ready(): Couldn't connect bearer: 'Failure'
error: couldn't connect the modem:
'GDBus.Error:org.freedesktop.libmbim.Error.Status.Failure: Failure'

I have attached the full log.

The sim card I used works on my Android phone. I just had to define the APN
and enter the sim card pin and it connects to the internet.

It appears to work fine and is able to get an IP address when using AT
commands. I'm not sure why it refuses to connect with modemmanager.

at+cgdcont?

+CGDCONT: 1,"IPV4V6","","",0,0

OK

at+cgact?

+CGACT: 1,1

OK

at+cgatt?

+CGATT: 1

OK

at+cgcontrdp=1

+CGCONTRDP:
1,5,"default","192.168.10.153.255.255.255.0","192.168.10.154","192.168.10.1","192.168.10.1","0.0.0.0","0.0.0.0"

OK

Any help would be appreciated.

Cheers,

Paul

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