Using VOIP to connect remote locations on a Overhead Loudspeaker Paging System, or a Public Address Systems is really working out well. Functionality is no problem. The fact the the locations are so spread out makes repair a bit of a challenge. We really need the cooperation of the IT departments. My last repair was for noise over paging at a remote location. Turns out the remote location had a noisy or defective power supply on the VOIP box.