An interface device for a distributed antenna system, the interface device comprising: a port configured to communicatively couple the interface device to a base station; a switching component communicatively coupled to the port via a downlink path of the interface device, wherein the switching component is switchable from a first switch configuration to a second switch configuration, the first switch configuration connecting the downlink path to an output port of the interface device, the second switch configuration connecting the downlink path to a termination load; a first power detector configured to measure a first signal power of an input signal provided via the port; at least a second power detector configured to measure a second signal power of an output signal generated from the input signal and outputted via the output port of the interface device; a processing device communicatively coupled to the first power detector and the second power detector, wherein the processing device is configured to receive the first signal power from the first power detector and the second signal power from the second power detector; and at least one hybrid configuration module in the downlink path, wherein the hybrid configuration module has a first hybrid configuration and a second hybrid configuration, wherein the first hybrid configuration of the hybrid configuration module comprises the hybrid configuration module being configured to combine downlink signals from multiple base stations (102a, 102b) and provide the combined downlink signal to one or more coverage zones of the distributed antenna system, wherein the second hybrid configuration of the hybrid configuration module comprises the hybrid configuration module being configured to separate downlink signals for transmission by remote units in the one or more coverage zones of the distributed antenna system. a port configured to communicatively couple the interface device to a base station; a switching component communicatively coupled to the port via a downlink path of the interface device, wherein the switching component is switchable from a first switch configuration to a second switch configuration, the first switch configuration connecting the downlink path to an output port of the interface device, the second switch configuration connecting the downlink path to a termination load; a first power detector configured to measure a first signal power of an input signal provided via the port; at least a second power detector configured to measure a second signal power of an output signal generated from the input signal and outputted via the output port of the interface device; a processing device communicatively coupled to the first power detector and the second power detector, wherein the processing device is configured to receive the first signal power from the first power detector and the second signal power from the second power detector; and at least one hybrid configuration module in the downlink path, wherein the hybrid configuration module has a first hybrid configuration and a second hybrid configuration, wherein the first hybrid configuration of the hybrid configuration module comprises the hybrid configuration module being configured to combine downlink signals from multiple base stations (102a, 102b) and provide the combined downlink signal to one or more coverage zones of the distributed antenna system, wherein the second hybrid configuration of the hybrid configuration module comprises the hybrid configuration module being configured to separate downlink signals for transmission by remote units in the one or more coverage zones of the distributed antenna system.