I am doing a fairly large install of a 2100. 30+ phones, 12 COT. Usually I go with a square setup. I believe I can only do 1 intercom, as such should I do these LOOP keys? Perhaps 1 intercom and 2 LOOP keys? Years ago on a PRI I did this on an 1100. Should I label them all Intercom? I think the LOOP only go out on the line pool? It would preferrable to just have multiple intercom appearances like other systems.