brad.wright: So to put it simply, it doesn't matter which order pin 2 & 3 (green & red) are??
Except on some very old phones that might be less tolerant. The way you described is standard. RJ11/RJ12 is a 6p plug so modern phones always on position 3 & 4.
Crossover ethernet is quite different from simply being reversed, because one pair have to be swapped with the other pair but otherwise keeping same pin positions. Only Gigabit will autodetect on the cheaper switches, and 100base ethernet cards normally dont detect so just try the straight cable first. The light should stay off if you need crossover.
Qualified in business, certified in fibre, stuck in copper, have to keep going ^_^