Can someone help clear up the function of the line keys on a Yealink T38G? Is "line" and "account" synonymous? The phone has 6 line keys and 6 accounts. When I autoconfigure from 3CX, it only configures one account, but I want the phone to be able to answer any of 6 incoming calls using these line keys. In 3CX, I only see the options for programming the 10 programmable keys on the right side, nothing for programming the line keys. Also, how to set the label on the line keys? Right now each key just shows my name. TIA.