TRB500 - Instable connection with 07.14.x

NETWORKING SOLUTIONS
1

Good Morning,

Firmware version: TRB500_R_00.07.13.4 | Kernel version: 4.14.336
Modem: RG501QEUAAR12A11M4G_04.201.00.000

..everything is stable and working well.
Upgraded to 07.14.2 and very instable connection issue.
Here in the log one of the time when connection broken…

813 Mon May 12 09:27:00 2025 daemon.notice netifd: mob1s1a1 (12374): Stopping network mob1s1a1
814 Mon May 12 09:27:00 2025 kern.err kernel: [ 758.203857] HIT DWC_ETH_QOS_nway_reset:1344 name:eth0
815 Mon May 12 09:27:01 2025 daemon.notice netifd: Interface ‘mob1s1a1_4’ is now down
816 Mon May 12 09:27:01 2025 daemon.notice netifd: Interface ‘mob1s1a1_4’ has link connectivity loss
817 Mon May 12 09:27:01 2025 daemon.notice netifd: mob1s1a1 (12374): Network cancelled… releasing resources
818 Mon May 12 09:27:01 2025 daemon.notice netifd: mob1s1a1 (12374): [/dev/cdc-wdm0] Network stopped
819 Mon May 12 09:27:01 2025 daemon.info dnsmasq[8371]: exiting on receipt of SIGTERM

Same issue also on previous 07.14 firmware.
No issue with 07.13…Rollbacked AGAIN from .14 to .13.

Let me knwo
Regards

3

Hello,

I have sent you a form to fill out. Once completed, I will contact you privately. For the ticket ID, please use “13717”.

Best regards,

4

Done several days ago. Nobody contact me.
I have tried also to reflash the firmware 07.14.2, disabling the VolLTE but same issue.
Here again the exacly moment when the mobile connection go down:

daemon.info gsmd[4999]: Modem 3-1 [2c7c:0800] URC Event: ESM reject cause => Requested service option not subscribed
daemon.info mobifd: [gsm.modem0] ESM reject cause “Requested service option not subscribed” received. Setting connection timeout
daemon.info mobifd: [gsm.modem0] Connection will be re-established in 1200 seconds
daemon.notice netifd: mob1s1a1 (12374): Stopping network mob1s1a1
kern.err kernel: [ 758.203857] HIT DWC_ETH_QOS_nway_reset:1344 name:eth0
daemon.notice netifd: Interface ‘mob1s1a1_4’ is now down
daemon.notice netifd: Interface ‘mob1s1a1_4’ has link connectivity loss
daemon.notice netifd: mob1s1a1 (12374): Network cancelled… releasing resources
daemon.notice netifd: mob1s1a1 (12374): [/dev/cdc-wdm0] Network stopped
daemon.info dnsmasq[8371]: exiting on receipt of SIGTERM
daemon.info dnsmasq[12550]: started, version 2.89 cachesize 150
daemon.info dnsmasq[12550]: compile time options: IPv6 GNU-getopt no-RTC no-DBus UBus no-i18n no-regex no-IDN DHCP no-DHCPv6 no-Lua TFTP no-conntrack no-ipset no-nftset no-auth no-cryptohash no-DNSSEC no-ID loop-detect inotify dumpfile
daemon.info dnsmasq[12550]: UBus support enabled: connected to system bus

Rollbacked again to 7.13.4.
Regards

5

Hello,

You should have received an email by now.
Could you please confirm if you see it?

Thank you!

Best regards,

6

Yes. confirm

7

Thank you for confirming. Let’s continue our communication via email.

Best regards,

8

Issue seem related to different behaviour btw firmware release when this message occur:

daemon.info gsmd[4999]: Modem 3-1 [2c7c:0800] URC Event: ESM reject cause => Requested service option not subscribed

In the latest firmware release connection dropped, in the previous not.

Regards

9

The issue occurs because the modem attempts to use IMS (IP Multimedia Subsystem) features that SIM/network doesn’t support, leading to network reject errors.

In firmware 7.14 and above, we improved how these rejections are handled and made them more visible.

Disabling IMS is a valid solution in such cases, and we recommend keeping it off if IMS isn’t supported by your network.

Best regards,