The Primary Hub provides the interface to the RF sources and converts RF signals to optical and connects via fiber to either additional Hubs or Remotes. The Primary Hub features a unique internal service distribution matrix which provides flexibility in terms of how supported wireless services are routed within a system deployment. This means specific operators or frequencies can be routed to the entire system or to designated sections of the system, depending on requirements.
A Secondary Hub connects via a full-duplex optical link to an OpticalModule that is inserted in the front of a Primary Hub. Its purpose is to distribute an RF feed from the Primary Hub to up to 8 Remote Units. A Secondary Hub supports this full 1:8 optical expansion by default, without requiring any additional modules. Power Supply Unit (PSU) functionality for powering all of the attached Remote Units is also integrated in the Secondary Hub chassis.
The Service Modules provide the interface to the RF signal source. Up to four can be deployed in a hub, and they are hot swappable, allowing either system maintenance or the addition of operators or frequencies without disrupting service.
The Optical Modules support fiber links from the hub to the Remotes. Up to eight optical modules can be deployed. They are also hot swappable units, allowing for system maintenance or adding remotes with no impact to service.
The Remote Unit is typically mounted above ceiling tiles or in out-of-sight locations as close as possible to the service area. It converts and amplifies the wireless signal for transmission to or from a mobile device. Like the rest of the system, the remote is a wideband unit capable of supporting all frequencies from 150MHz to 2,700MHz in any combination.