If they don't recognize a person on KHConf phone in, they go around asking other elders or servants most likely (because the elders sit on ivory thrones figuratively) if he recognizes this number. If they don't recognize the number they can kick you off, and in the last year or so, probably would, unless you are in a particularly chill congregation. Now there's an oxymoron. I've heard them bragging about throwing an unknown number off the line. So, someone goes through their contacts, and says, yeah that's so and so's number, keep 'em on. It's a little hub bub it at the meeting among the servant body and the sheep are like "what's going on?" (because they are bored out of their minds). KHconf keeps track of the minute you call in and the minute you hang up, and keeps the info for at least months if not longer. They assign a name to the number in the system. I would not doubt it has an archive feature. Or at least weirdos can screen shot the results. You can print off who was on for the longest the last 3 months or whatever length of time you want, 4 months, etc. It counts up their minutes and tallies them. Brother or Sister crazy that calls in 30 minutes early always wins.
Welcome Youngaposthate! I wish you luck in your endeavors and am curious about their results.