 Hi, I'm Andy from Riedel and in this video, we're going to be talking about the meaning of the term XP or crosspoint. Now when we say XP or crosspoint, it's not because our operating systems are vastly out of date or because we really enjoy angrily pointing fingers at people. It actually refers to crossing an audio input over to an output at a specific point. If we think of an intercom like a kind of matrix, we have inputs and outputs and where these cross over we can make a point which will then be where the audio takes its route. So we're routing audio from an input to an output just like when we do a call to port we press on the button that links the audio from our microphone to the loudspeaker or headphones of the person we're talking to.