The UI 815 switch box enables you to answer calls from a desk phone, softphone/PC or a smartphone using the same Easy Disconnect headset. The switch box is ideal for offices and contact centers looking for a smooth, cost-effective migration to a UC solution or using two audio sources to maximize operational efficiency. By switching between two audio sources using only a single headset, you can either use your existing desk phone headset or invest in a future proof headset solution.