bob:
When I said OC, I was referring to an OC48 and such.
Look up OC48 on google

I am on a T1 right now and got 3538 kbps upload speed.
I wish I could run a server from here

but I won't risk getting fired
I would keep the player limit to 8 or 10 MAX on your cable server, and cap the rate at maybe 3000 so everyone can play without much lag.
There are others here a lot more experienced with setting up servers that can help you further.
I will be renting a server from that place I posted soon, I will let you guys know the IP when it is all done

It will be a 24 man server most likely, maybe higher.
BTW: Bob, your download speed seems slow for cable?? Have you applied any tweaks ?
I average 500kbs download from fast sites on my home cable connection, sometimes as fast as 1MB