I'm hoping someone here can help me out. We have a customer with a leased line connection (Verizon) connecting locations approximately 3 miles apart. The connection is for computer stations that monitor fire alarm equipment at each end. They are having communication issues such that the nodes are losing and regaining connection at about 20 minute intervals. Then they have to reset the panels/stations every time the troubles swing in and out. Although we are looking at potential equipment related issues, my question here is how can I test the leased line for end-to-end quality? I've poked around the web, and it looks like the equipment to do the testing is available for the modest (NOT) sum of $3,000 or so. This excludes, of course, the experties to use it. Are there relatively easy tests that can be done, or a way to monitor the leased line quality if only on a temporary basis? I'm not keen on taking Verizon's word that their infrastructure is in tip-top shape.