Can I make HD FaceTime Video call on 1 Mbps data speed on My iPhone 5?

I Just bought iPhone 5 (unlocked)and i Have 10 Mbps unlimited data connection. Its really good for FaceTime but my data connection is going to end this month. Now i want to move cheap package with 1Mbps(unlimited Download). Can i make FaceTime call with that data package. If not the what is the menimum Mbps i need for making good quality FaceTime call. I'm from finland.

You could but it'll be slower than a break dancing turtle

That is extremely fast internet, and you should be able to make a call with ease