The Nokia 4-pole jack is NOT wired the same as the Apple. If you use a Nokia headset with a MacBook (and I assume MBPro) the headset will sound muted and in mono, unless you press the button - then it reverts to normal. The same happens when using Apple (or iPod compatible) 4-pole headsets with the N810.

As far as I'm concerned, the Nokia uses accepted "standard" wiring, while the Apple is wired in a "proprietary" way.