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please could you tell what is the purpose of the SIM?
Thank you for your inquiry,

If you are referring to the cellular modem feature: The IM7216-2-24U-DAC console server has a number of out-of-band access capabilities and transparent fail-over features, to ensure high availability. If there’s difficulty in accessing the console server through the main network path, all Opengear console server models provide out-of-band (OOB) access and administrators can access it and its Managed Devices from a remote location.
  • All Opengear console server models support serially attaching an external dial-up modem and configuring dial-in OOB access. Some models with USB ports support attaching an external USB modem. Some models also come standard with an internal modem. These modems can also be configured for dial-in OOB access.
  • All console server models with an internal or externally attached modem can be configured for out-dial to be permanently connected.
  • Opengear console server models can also be configured for transparent out-dial failover. In the event of a disruption in the principal management network, an external dial-up ppp connection is automatically established.
  • These console server models can also be accessed out-of-band using an alternate broadband link and also offer transparent broadband failover.
  • Models with an internal cellular modem can be configured for OOB cellular access or for cellular transparent failover or can be configured as a cellular router.
Hope this helps!

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