is it possible to pair a mitel 5603 to a n300a ip base station?

[dvd7730]

see subject line,

I bought a couple of mitel 5603 (and a couple of 5312 and 5340 phones). all without any dect base and so on.

I am trying to pair a mitel 5603 (dect handset) to my n300a ip (dect) base station, without any luck. don't know if it is possible anyways, but i hope any of you guys know it.