Quote:
Originally Posted by theducks
 for bringing up that T-mobil does not support Port forward.
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The 5G is essentially a cell/mobile system, so even if you had a router/modem that supported "port forwarding" it likely wouldn't work due to how their network is connected to the actual internet. It won't work well with most satellite systems, but for different reasons.
Port forwarding is for connections originated outside your home network from the public internet. That will mostly work for xDSl, Cable, fibre and radio links uing broadband protocols, i.e. always on connections. If you don't have a static IP then a program on your home network has to report the public IP when it changes to the Dynamic DNS server service you sign up to.
All cell/mobile networks (1G, 2G, 3G, 4G, 5G, Wimax) only connect on demand and only regular calls (not IP port access by a remote) incoming 100% enable the connection as the bandwidth is shared by ALL users in the cell (mast area). An outgoing data connection works, otherwise it would be no use. But even that may not actually connect if the mast is fully loaded. All cell/mobile networks (1G, 2G, 3G, 4G, 5G, Wimax etc) are like an instant dialup. You can even get modems controlled by AT commands like the old analog POTS.
Real broadband is always on, or at least mostly always on, and unlike all cell/mobile networks (1G, 2G, 3G, 4G, 5G, Wimax etc) you always get a connection; any severe contention simply reduces the speed.
Most marketing of 3G, 4G and 5G has been dishonest. It's certainly internet access, but not true broadband. Old DSL only giving 1 Mbps is more reliable than 500 Mbps 5G, because it's always there unless broken. The peak speed quoted for 3G/4G/5G is assuming a perfect signal and only one user on that sector of the mast. A mast might have separate systems in different directions to improve capacity.
How do I know? I did most of the R&D for an ISP that had fibre, dsl, two kinds of satellite, 4G, point-to-point wireless and point to many wireless using cable protocol over microwave (DOCSIS 2.0 then DOCSIS 3.0). They also have datacentres. I was researching ways to use cable broadband protocols over wireless links.