We (for the most part) are running Cat5e. However, we have a couple of offices that are stuck with cat3 wiring and wont be upgraded because we are ...

cat3 isn't such a bad idea. It's easier to work with/thinner, and if you have a lot of wires in a phone closet, sometimes running cat3 is more managable.

Single UTP and individual pairs of CAT3 and CAT5 cable* 10 Mbps. 1,200 ft. (365m) CAT5e 4-pairs and CAT6 4-pairs. 100 Mbps. 2,000 ft. (610m) CAT5e 2-pairs and CAT6 2-pairs.

While wireless gear is popular, the backbone of any network should be connected via an Ethernet cables. They offer higher and more consistent throughput, with less interference, which makes them ...