I have two networks located on two different buildings about 20 metres apart. I would like to connect both the networks together using wireless technology. it doesn't have to be high speed, just good enough for normal office work (small file sharing, a bit of printing, etc.) both the office are within line-of-sight of each other.
how much would that cost roughly in USD? can somebody recommend some devices? what i normally see are wireless hub + wireless NICs which is not what i need, right?
btw, what is the exact term for what i'm trying to do?