I've recently set up PBXIAF with a Sangoma A200 card and am testing it now before going live with it. I have 3 POTS lines I am going to eventually hook up. Our old PBX system would light the line number of the line in use. It appears with the 57i it is not showing line numbers that are active except on the phone that is using the particular line. Sorry to be so confusing. What I guess I am asking, if someone calls in on line 1 and it is active and someone calls in on a second line, can everyones phone show that those lines are in use by lighting up the line?