Hybrid-riser cable with distribution box
This solution, a factory-terminated hybrid-riser cable assembly, minimises the amount of cables running up the mast. At the hybrid distribution box the multi-fiber/wire cable is split into individual cables which are linked to the RRHs with short jumper cables. The jumpers allow an adaptation to different RRH interfaces and therefore make the solution independent from the system vendor’s hardware. A box solution enables the use of circuit breaker and/or surge protection devices.
However, this installation method requires large and bulky boxes on the top of the mast. With increasing number of remote ratios per site, space limitations and wind load become critical issues. Many operators also want to avoid the risk of opening and maintaining mast-top boxes by non-trained or non-authorised persons.