Is there a standard for RJ 11 or RJ 45 modules? I have a campus with some 1,000 phones and a similar amount of computers if not more, and up to now have majorly been using a type of module with side clips made by at&t then avaya then lucent, etc. but am having a rough time finding more. Just looking for a good style that will always be available in the future. I see a number of places selling "kingston" modules. Are they reliable? Any suggestions on this?