yes that would, and it's also the reason that they seldom get checked.. i built a box with 16 neon lamps, used a male and female plug to place the tester in line with a single analog card, then dialed each on the 16 dn's (script), because the neon lamps were in series with the tip side of the line, we went through almost 100 analog cards in less then a week.. seems extreme but we got back 400 tn's and dn's..
this was on an install, replacing a switch and the customer didn't want to build those sets if they were dead in the wall.. we killed about 6 analog sets that did not have a ringer or auto answer...
john poole
bellsouth business
columbia,sc