I am evaluating the communications system and networking hardware for a complete new build of a new faculty that has started and will be complete next Sept. We will have a need for 600 station, ACD, multiple MOH inputs, voicemail, unified messaging, etc. voice solution. We currently run a Nortel PBX for the faculty we are in and it runs like a refrigerator. My main concern is we need to make a voice communications solution decision and if we go with VOIP we risk a virus like CODE RED swamping the LAN creating a voice problem too. Other things like switches in closets getting powered off, etc with impact the voice network then too. I guess I fear our CEO calling me up saying he saw we spent $650k on the new "phone system" and this echo, click, etc. sucks. Why cant it be as good as our old "dinosaur"? I am however intrigued with a VOIP solution. Any input please?