IP DECT R4 Issues

[DeathfromAvaya]

Adding 4 IP DECT bases to our IP Office version 11 for use in different locations on the same premises. Followed AVAYA IP Office DECT R4 Installation document but hit a few stumbling blocks. Currently have 2 bases connected and showing Sync OK in both GUI portals for bases, one is the Master the other is Air Sync Master but Slave to the Master for deployment in a different area. Currently phones can make internal calls to extensions (sometimes anywhere from 5-15 second delay for rings), but one shows NoUser while the other shows the correct user signed in on the receiving phone. Neither phone can receive calls, the call goes to voicemail (have checked DND).