I’m a networking student and have come across this in my studies. I just can’t wrap my head around the fact that a T1 line at 1.5 mbps can transfer more data than a cable connection at 400 mbps
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It isn’t better, not a T1 vs a 400mbps cable connection. But this is what it is….
1. The data transfer is synchronous. The T1 will be 1.5mbps up and down. The cable connection most likely will be asynchronous, it >might< be 400mbps down, but it’s probably only 10 or 20mbps up. And I strongly use the vagueness there. See reason #2.
2. The T1 will be all yours. You get 100% of that bandwidth. The cable modem is a shared medium. There’s a local hop somewhere that feeds all that coax/fiber out to you and if there’s 200 customers plugged into that box, you’re all sharing the bandwidth. If a bunch of people suddenly start downloading those fortnite updates, your bandwidth will be impacted. The T1 will likely have better overall latency for this reason.
3. The T1 99.9999% of the time will come with SLAs that guarantee a specific level of service (like 80% of your rated bandwidth for 90% of the day, or 99% availability or somesuch). Your typical cable provider, even at a ‘business’ class level doesn’t have any fucks to give about service levels. If you go down, deal with it. This is why things like SDwans exist.
But on a day to day basis, the 400mbps cable connection is going to vastly out perform a T1 @ 1.5mbps, even on the slow channel. But….no one uses T1s anymore unless they 100% have to.
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