Cool, Im gonna try that out, so you just set them to sync to the Regions MBS, thus having 2 MBS and the rest air synched within that region? I could not get it working, but now thats some insight!
Advanced Scenario: Separated Locations
In most scenarios, the master base station is also used as the air synch master for all the other slave base stations and
that is the scenario documented in this manual. However, in scenarios where you have base stations in separate locations
that are not within synchronization range of each other, it is permissible to assign separate air synch masters in each
location. However, there must be absolutely no overlap (<-90dB) between the separate groups of base stations. Any
overlap will cause frequent lose of synchronization.
Having separate locations, each with its own synchronization is done through the settings on the DECT | Air Sync tab of
each base station. For each location, set the same Sync Region number for all the base stations at that location, using a
different number for each location. In addition, set the Sync Mode of one of the base stations in each location as Master