Baseband unit 434 and its channel cards may have an associated base station identifier and network address, so that the network infrastructure 116 can route data to the baseband unit for transmission in the baseband unit's cell site. As data arrives at the baseband unit, demultiplexing RRH port 438 unit may distribute the data to an appropriate channel card, and the channel card may encode the data and output the encoded data for transmission in an appropriate cell and according to an appropriate air interface technology, and vice versa. In practice, the RRH port 438 of the baseband unit may be couple the baseband port 528 of the RRH by a cable encasing multiple fiber optic cables (e.g., common public radio interface (CPRI) cables), such as one per carrier per sector. For instance, a given sector from the first channel card (carrier 1) could be coupled by a first fiber optic cable with a connection at the RRH, so that the RRH can handle such communications on carrier 1 for the given sector, and similarly for other carriers and sectors.