Teltonika RUT955: APN and roaming settings for an IoT SIM

Updated 27 October 2026

To use an IoT SIM in the Teltonika RUT955, open Network > WAN, mobile interface, turn off Auto APN, enter the APN of your SIM, and leave "Deny data roaming" off in Network > Mobile > General. A multi-network IoT SIM often connects to partner networks in roaming; a router set to refuse roaming data stays offline with it.

Key facts

The settings below still apply to installed units; for a new project, check Teltonika's current range.

Source: Teltonika wiki, RUT955. Checked 27 October 2026.

Set the APN

1. Open the web interface and go to Network > WAN, mobile interface.
2. Turn off Auto APN: it picks an APN from the router's database by operator and country, which does not know your IoT SIM's APN.
3. Type the APN shown in your M2M.global account in the APN field (internet APN, or your private APN). Leave user name and password empty unless your account shows them.
4. Check that Deny data roaming is off (in Network > Mobile > General).
5. Save and apply, then read the connection state on the status page.

Source: Teltonika wiki, RUT955 WAN settings, Teltonika wiki, RUT955 mobile settings.

Reach the router remotely without a public IP

With private delivery, the router gets a private IP address that routes straight to your cloud or office network: you manage it, and the equipment behind it, without port forwarding and without exposing it to the internet. If you need access from anywhere instead, a static public IP is an option.

Networks and shutdowns

• 2G fallback only helps where operators still run 2G: see the shutdown dates.
• Permanent roaming rules apply to devices that stay abroad: see the rules by country.

The SIM: IoT SIM cards. Typical use: SIM card for 4G and 5G routers.