(ALL JABRA DISCONTINUED!) The 9120 has multi-unit conferencing capability that lets up to four headsets join in on a call from a single base unit. And since the 9120 has a 300 ft range, you can hold conferences from virtually anywhere in the office! Also, this multi-unit conferencing capability is great for training purposes! Without any sort of Y-cord, you can wirelessly listen in to another call. For this procedure the headset that comes with the 9120 is considered the master headset. 1. While on a call on the master headset (#1), place the second headset in the charge base( #2). 2. Wait approximately 5 seconds, the lights on the base will flash, turn solid, then shut off. Immediately remove the second headset from the base (#3). 3. You’ll hear a beep in the master headset (#4). Press and hold the multi-function button on the master headset for 3 seconds and then release (#5). 4. You should now have the second headset conferenced in, if not, press and hold the multi-function button…