[RUT956] Mobile ESM reject cause: Unknown

[BitFrettchen]

Hello Teltonika Community,

I am experiencing a persistent mobile connection issue with my RUT956 in the Vodafone Germany network.

The router detects the SIM card and the LTE network correctly (e.g. LTE Band 3 / 7, MCC 262, MNC 02 or 03),

but the data connection fails every time with the message:

“Mobile ESM reject cause: Unknown”

and via AT commands:

+CEER: 6,259

(ESM cause #33 – Requested service option not subscribed)

Details:

- Device: Teltonika RUT956

- Firmware: RUT9M_R_00.07.18.3

- Modem: Quectel EC25-EUX

- Modem FW: EC25EUXGAR08A15M1G (latest available)

- APNs tested: auto and static (IPv4 and IPv4v6)

- SIM types tested: smartphone SIM, data SIM (both active and tested in another router)

- Other device (RUT955 with EC25-E) works fine with the same SIMs.

Even with a full modem reset (AT+QPRTPARA=3, AT+QPOWD=1) and manual PDP definition (AT+CGDCONT=1,“IP”,“web.vodafone.de”),

the connection fails with the same ESM cause.

Best regards

[EimantasN]

Hello,

For troubleshooting purposes, we will require more sensitive information from your end, such as the troubleshoot file, which may contain passwords, public IP addresses, serial numbers, and such. To avoid leaking this information, we have sent you a form to fill out, which you will receive in your e-mail inbox that you have registered your account with in the forums. In the **Ticket ID** field of the form, please enter the ID of this thread, which is **16248**.

Best regards,

Eimantas