BrandMeister Master servers now support the interlinking XLX reflectors the BrandMeister. The setup on the user side requires that XLXD is installed and configured properly to accept connections from the BrandMeister server you are connecting to. Also required are 2 ThumbDV's for the trans-coding. XLXD install instructions can be found at 
Once you determine the XLX reflectors and modules you want to connect to, we can configure XLXD on the user side.
Below is a sample of the xlxd.interlink configuration file.
XLXD interlink file
one line per entry each entry specify a remote XLX to peer with format: <callsign> <ip> <list of module shared> example: XLX270 18.104.22.168 ACD
note: the remote XLX must list this XLX in it's interlink file for the link to be established
BM3108 3108.repeater.net A <<----- Here is where we set the configuration of the master server, in this instance your XLXD instance is connecting to Master 3108 and module A
Here is an illustration of the configuration: