Just get jack panels with inserts, and put in whichever jack insert you want into that panel. Or it can have two inserts, with both simultaneously wired, and just use whichever you've got patched in at the central switching location.

Honestly, though, you should be wiring four pairs (full cat-5) to each outlet...

Where I work, we have three sets of four pairs (three cat-5 connections) to each outlet. Two full four-pair LANs, and then one phone and one optional modem on the remaining cat-5 cable. The phone needs two pairs because it's a multiline company phone system.