{"id":2781,"date":"2020-03-06T17:35:55","date_gmt":"2020-03-06T16:35:55","guid":{"rendered":"https:\/\/www.thiim.com\/?p=1180"},"modified":"2025-12-11T09:42:37","modified_gmt":"2025-12-11T08:42:37","slug":"industrial-4g-lte-modem-gateway-2x-sim-card","status":"publish","type":"post","link":"https:\/\/thiim.com\/en\/industriel-4g-lte-modem-gateway-2x-sim-kort\/","title":{"rendered":"Industrial 4G\/LTE modem gateway 2x SIM card"},"content":{"rendered":"

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Introduction.<\/strong><\/p>\n

Industrial IoT and Industry 4.0 place greater and greater demands on data collection, even from devices that are only accessible via mobile coverage. With Moxa's 4G\/LTE modem gateway you get faster access to data and with room for two SIM cards, you get greater security for uninterrupted connections.<\/p>\n

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2G, 3G and 4G.<\/strong><\/p>\n

For industrial solutions where there is no other way to connect than using the mobile network, 2G was for a long time the preferred form of communication, especially the slightly faster EDGE technology (also referred to as EDGE or 2.7G). This was because the new technologies, such as 3G and 4G, communicated at higher frequencies and thus had a shorter range.<\/p>\n

But recently, many companies have improved 3G and 4G coverage, more masts have been erected and there are plans to phase out 2G. We're also seeing more complex controls that require faster response times and the transfer of larger amounts of data.<\/p>\n

We have been informed that in Denmark, 2G will continue for some time yet, although possibly without EDGE, as the frequency is to be used for 4G. Some applications will not be able to run on a pure 2G connection, especially if you use a standard SIM data card and let the modem make a VPN connection to the server. If you have a SIM card with Private IP, it's ok, as the VPN part is not between the device and the ISP but between the ISP and the user.<\/p>\n

In several countries, 2G has already been phased out or is in the process of being phased out and in 2021, 3G is scheduled to be phased out in the US.<\/p>\n

So there are several good reasons why Moxa's new 4G modem is of interest to many.<\/p>\n

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Security via VPN.<\/strong><\/p>\n

Moxa's new 4G modem OnCell G3150A-LTE, like the other 2G and 3G modems in the same series, supports secure connection via VPN. But as something new, this new 4G modem also supports OpenVPN, a widely used VPN connection.<\/p>\n

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Dual SIM (2 SIM cards).<\/strong><\/p>\n

With one SIM card, you can connect to the Internet service provider you have an agreement with. You may have a roaming agreement, but if you can't connect, you have a problem. With two SIM cards, you can make an agreement with two providers and if there are problems with one, you can always use the other as a backup.<\/p>\n

For solutions that are not stationary (car, lorry, ferry - possibly crossing national borders), the solution is to have multiple SIM cards. Each SIM card acts as its own modem. One is primary, and if it can't get a connection, the other takes over.<\/p>\n

Moxa's modem has a smart algorithm that monitors and ensures that there is a connection. If a connection cannot be established, the modem first tries to reconnect on SIM card 1, then SIM card 2, and if this also fails, the modem reboots itself to start a new initialisation with the selected providers.<\/p>\n

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How can I find out more (useful links)?<\/strong><\/p>\n