TRB145 - LTE modem good signal but disconnected

Networking Solutions
1

Hi,
my TRB145 give “disconnect” as mobile status; below the screenshot:

immagine

the signal it seems ok but cant connect and in the events logs i see " Mobile data disconnected (internal modem)"

and this is the output for modem:

root@HOST:~# uqmi -d /dev/cdc-wdm0 --get-data-status
"connected"
root@HOST:~# uqmi -d /dev/cdc-wdm0 --get-serving-system
{
        "registration": "registered",
        "CS": "attached",
        "PS": "attached",
        "plmn_mcc": 222,
        "plmn_mnc": 88,
        "plmn_description": "פ�H�\u0016\u0001",
        "roaming": false,
        "status": "available"
}
root@HOST:~#

furthermore

Tue Jun 25 23:53:37 2024 daemon.notice netifd: mob1s1a1 (640): pdh4: Reason type not found"
Tue Jun 25 23:53:37 2024 daemon.notice netifd: mob1s1a1 (640): "No effect"
Tue Jun 25 23:53:37 2024 daemon.notice netifd: mob1s1a1 (640): Unable to connect IPv4
Tue Jun 25 23:53:37 2024 daemon.notice netifd: mob1s1a1 (640): Releasing client-id 1 on /dev/cdc-wdm0
Tue Jun 25 23:53:37 2024 user.notice netifd: uqmi -d /dev/cdc-wdm0 --timeout 30000 --set-client-id wds,1 --release-client-id wds
Tue Jun 25 23:53:37 2024 daemon.notice netifd: mob1s1a1 (640): Failed to create IPV4 connection
Tue Jun 25 23:53:37 2024 daemon.info dnsmasq[4742]: read /etc/hosts - 4 addresses
Tue Jun 25 23:53:37 2024 daemon.info dnsmasq[4742]: read /tmp/hosts/dhcp.cfg01411c - 1 addresses
Tue Jun 25 23:53:37 2024 daemon.info dnsmasq-dhcp[4742]: read /etc/ethers - 0 addresses
Tue Jun 25 23:53:47 2024 daemon.notice netifd: mob1s1a1 (1202): Stopping network mob1s1a1
Tue Jun 25 23:53:47 2024 daemon.notice netifd: mob1s1a1 (1202): Command failed: Not found
Tue Jun 25 23:53:47 2024 daemon.notice netifd: mob1s1a1 (1202): Command failed: Not found
Tue Jun 25 23:53:47 2024 daemon.notice netifd: mob1s1a1 (1202): Command failed: Permission denied

is there any troubleshooting to be done to understand the problem? any Idea?
thanks

3

Hello,

Make sure you are using the correct APN for your mobile carrier. To find the correct APN, contact your mobile carrier or check their troubleshooting/info page. You can change the APN setting on the TRB145 by going to Network → WAN and pressing the “Edit” button next to the desired mobile interface. In the new pop-up window, uncheck “Auto APN” and input the custom APN.

2024-07-05-10-31-07-RUTX50 - Teltonika Networks
2024-07-05-10-31-07-RUTX50 - Teltonika Networks821×645 19.3 KB

Best regards,

4

Thanks Marius,

but I have found the problem; it seems that the configuration of the interface was not the correct one. Below the right conf:

config interface 'mob1s1a1'
        option proto 'connm'
        option modem '3-1'
        option metric '1'
        option sim '1'
        option dhcpv6 '0'
        option pdptype 'ip'
        option method 'nat'
        option _area_type 'wan'
        option device 'rmnet0'
        option pdp '1'
        option auto_apn '0'
        option force_apn '-1'
        option password 'abcabcabc'
        option username 'abcabcabcabcabc
        option apn 'apn.abc.abc'
        option delegate '1'
        option force_link '0'
        option auth 'chap'
        option pref_apn '267'

below the previous wrong conf:

config interface 'mob1s1a1'
        option proto 'connm'
        option modem '3-1'
        option metric '2'
        option sim '1'
        option dhcpv6 '0'
        option pdptype 'ip'
        option method 'nat'
        option ifname 'rmnet0'
        option force_apn '-1'
        option apn 'abcabcabc'
        option username 'abcabcabc'
        option delegate '1'
        option force_link '0'
        option auto_apn '0'
        option password 'abcabcabc
        option auth 'chap'
        option pdp '1'

I have created by using the gui a new interface and I have performet a diff between the newone configuration file and the oldone

Thanks