Symbol Technologies Spectrum24 AP-4131 - Manual (Page 204)

Hardware Installation
194 AP-4131 Access Point Product Reference Guide
4.8 BIAS-T Low Power Distribution System
The BIAS-T system provides an economical and reliable method for powering
access point(s) from a remote location. The BIAS-T system combines low-
voltage DC with Ethernet data in a single cable connecting to an access
point. An Ethernet cabling infrastructure is required with the BIAS-T system,
but the BIAS-T system single DC and Ethernet data cable creates a modified
Ethernet cabling environment.
When users purchase a Spectrum24 network they often need to place access
points in obscure locations. In the past a dedicated 24-hour, 90-264 VAC
power source was required for each Access Point as users connected the
access points directly to an existing wired (Ethernet) infrastructure. This often
required an electrical contractor to install power drops at each access point
location. The BIAS-T conversion feature eliminates the cost of retaining an
electrical contractor to install the infrastructure. With the BIAS-T system,
centralized power can be provided for numerous access points without a
local power supply for each access point.