User's Manual

R01.i RT System 2 v2.3 Deployment Guide 27

3. Backhaul

Overview

In the RT System 2 system, the LIU communicates with the Central Software System (CSS)

computer in the central recording truck along a backhaul on the

5.8 GHz Industrial, Scientific, and Medical (ISM) radio band. Some smaller systems may not

require a backhaul.

Power over Ethernet

(PoE)

A technology that passes electrical power

along an Ethernet cable. PoE is used where

DC power is not available and USB

unsuitable. Power can be supplied at the end

of a network span or somewhere in the

middle.

PoE switches supply power at the end of a

span. The RT System 2 Line Interface Unit

(LIU) acts as a switch with PoE.

PoE injectors supply power somewhere

between the PoE switch and the powered

device. They inject power and do not affect

the data. A discrete PoE injector is used

when configuring the backhaul radios.

• “Ubiquiti Rocket/Bullet Private

Network Connection” on page

107

• “Ubiquiti NanoStation Private

Network Connection” on page

Table 3–1 Backhaul Communication Concepts

Term Definition Reference