Could you please clarify what you mean by “automatic gates”? Are you referring to an SMS gateway? If so, have you tried following this RUT200 Mobile Utilities - Teltonika Networks Wiki guide? If not, please provide more information about what you are trying to achieve, and if possible, include a link to the guide you used for the configuration.
For your setup, the router’s I/O port should be connected to a relay that controls the gate. You can configure the I/O settings in Services → Input/Output via the WebUI.
Digital Input: Reads the voltage level of the relay to determine if it is on/off. Digital Output: Used to power the relay and control its on/off state.
To trigger actions, you can change the I/O state using SMS messages, which can be configured in Services → Mobile Utilities → SMS Utilities under SMS Rules. Alternatively, you can use calls, which can be configured in Services → Mobile Utilities → Call Utilities.
Additionally, here are some useful wiki pages that should help with your setup: