RMS Connect Equivalent

Hi there, this is the first time using Sierra Products, I have three RV50’s in EV charging stations. I normally use Teltonika RUT240 and use the Remote Connect HTTPS and SSH function and can access the webpage of the EV charger remotely. We use IOT sims for connections so no way of using Dyndns services through the cellular network. Please assist in what I need to do to access a webpage through a RV50 router using airvantage. Example of RMS Connect below.
RUT240 RMS Connect Example