I'd just like to throw in my 10 cents worth.
Cat5e is somewhat overkill, good old CW1308 is fine for this job (it's also twisted pair).
Advantages:
Thinner as it's available in 4-core (Cat5e is 8-core ) so easier to run.
Usually solid-core so ideal for punch-down IDC terminals
Usually white so more "acceptable" visually (and did I say it was thinner?)
Probably cheaper, but that's a minor point.
AND it's the "correct" product to use for telephone wiring.
Just DON'T use the cheap flat (untwisted) phone extension cable.