Thanks Todd, I have used something similar in the past with Avaya 1603 phones.
We have ended up chanigng the AP design so that we only have 1 cable to each with half of the AP's go to one comm's room and half to another. By carefully selecting which ones go to where we can utilise auto power adjustment and beamflex we think/hope we can get the coverage during the loss of power to one comms room which we hope to put to the test if possible.