I have an office with a broadband conenction with just 2 staff. The broadband is currently not with BT.
One of them make a lot of calls to landlines and mobiles. The other makes few calls.
Both can also work from home.
I also have a 3rd person who works from home on a laptop. He already has BT Home broadband.
All 3 need to be able to talk to each other and to xfer calls between each other.
What would be the prefered voice/voip solution for this set up?