My personal opinion for you to consider:
Buy a networked fax or networked all in one fax/scanner/printer/copier. Therefore any computer in your office can send a fax by "printing to" the fax machine.
I use this method, it works wonderfully well. I fax from the exam room all the time, Rx's mainly, but sometimes work notes for patients.
The staff fax from their P.C.'s such as referral letters, records, imaging reports, etc.
