We use blueface, we have 3 locations (home offices) our central line rings and it rings in 3 places, who ever picks it up first can transfer it to one of the other locations. If Im away I can switch off the ringing in my house etc, I can also call forward the phones to an eircom line if necessary, this costs nothing, even for the forwarded call, once you have a price plan with them (business plan is €30 a month) Our phone will is €360 a year which includes all landline calls to UK & Ireland, we use about €10 a month calling mobiles. We used to pay eircom 400 a month....