What I find amusing is WHAT is required to make VOIP work reliably and all the simple little things that can bring it to its knees. This alone should give pause to someone that doesn't need VOIP. Take note, well sell VOIP and TDM systems. Luckilly I have been fortunate to work with VERY good IT personal at these locations and they "GET IT" and haven't implemented VOIP unless it was absolutely necessary after weighing everything.