avs3

I have been tasked with an assignment to figure out how many RF connectors there are on an average cell phone tower. I don't have the faintest clue as to how I can go about estimating this number. Just reviewing this forum I am guessing there are typically 9 sector antennas per triangle installation. Beyond this how can I estimate how many RRU's feed into each antenna and then how many RF connectors there are for each antenna setup? Any comments would be very helpful. Thanks in advance!