Our SWX system is operated in the SRD band 868MHZ. In principle, joint operation with systems from other providers in one building is possible as long as the other system is operated in the same band.
The basic principle is that all affected subscribers in this band adhere to the "Listen before Talk" principle, which means that all subscribers check whether a subscriber in your vicinity is transmitting before you transmit yourself.
In this way, interference is generally avoided as long as there is not too much agglomeration of participants in a particular area.
In case of such a concentration, we have the possibility - on the service level - to limit the radio network to certain "free" frequencies.