Support for external USB cellular modems is not maintained. Increasing regional, carrier, and vendor variations between dongles and short lifespan of these consumer-grade products means we can no longer guarantee a reliable solution.
Opengear strongly recommends that cellular connectivity for critical applications such as remote management is via an internal, enterprise-grade cellular module such as those integrated into Opengear -Lx models.
For dial-up connectivity, we have the Infrastructure Manager IM7200 or the Remote Site Gateway ACM7000-M both have integrated PSTN modems.
In addition, we currently provide support for 2 USB analog modems.
US Robotics USR5637
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