It sounds the same as the setup several ISPs offer in the UK - when the router autheticates with a particular username and password you get the same block of static IP addresses.

You can either route these directly to local devices and/or NAT (network address translate) one or more of them to a local private network, it's down to the capabilities of the router. I've used Draytek routers to do this for several years, not sure how widely used they are in the US.

For example, if you were given a block of eight addresses with aaa.bbb.ccc.94 netmask 255.255.255.248 for the router then you can use the five addresses aaa.bbb.ccc.89 through aaa.bbb.ccc.93 for devices (servers, phone systems, etc.) and/or have a load of devices on a local network (typically 192.168.1.x netmask 255.255.255.0) using NAT from the aaa.bbb.ccc.94 address.

You could either give the Samsung system one of the public addresses, or a private address and set up port forwarding. If you go for the public address I would strongly recommend setting up firewall rules to restrict connections to the just the ports required for normal operation.