I want to upgrade my ATT internet, do i call for a unsullied modem?

i own att central beside the Speedstream 4100 modem and want to upgrade to the internet right above essential.

Answers: No. Just telephone call ATT and own them bump you up. And Pay for it.

You don't entail a tentative modem. All you inevitability is to contact ATT to upgrade your service plan. It's that simple.