Reroute phone calls to computer?

[Emperias]

Hello all,
I have got a pair of headsets for my work which have bluetooth on them, so i just connect my phone to it, so whenever i get a call, i just click a button on the side of my headset to answer it.

So i was wondering, is there an app/program that let's me do this, so that whenever i get a phonecall and it's laying downstairs, i can answer it via my computer?

Greetings.