When joining a group or friend using the Velo, clear the old pairings before attempting to pair with another Velo. To clear the old pairing information, PRESS and HOLD the “A” and “B” intercom buttons until you see 2 RED flashes and hear the announcement “Pairing Cleared”. Before starting your pairing procedure, keep a distance away from others who may also be pairing their sets or phones nearby as this can interfere and makes pairing more difficult.IMPORTANT : When joining a new group, Pair your Velos again.  This takes less than 2 minutes. After hearing "pairing successful", wait 2 secs until you see the centre RED lamp flash before activating intercom.You can see a quick review of the procedure here.