Figure 1-1 Poe Installation Example - ZyXEL Communications ZyAIR B-420 User Manual

ZyAIR B-420 Wireless LAN Ethernet Adapter and Bridge
Bridge
A Bridge link LED turns steady on green when your ZyAIR is in bridge mode, indicating a wireless link to
another WLAN adapter in bridge mode or any wireless device with a bridging function.
Power over Ethernet (PoE)
Power over Ethernet (PoE) is the ability to provide power to your ZyAIR via an 8-pin CAT 5 Ethernet cable,
eliminating the need for a nearby power source. An injector or PoE device (not included) is also needed to
supply the Ethernet cable with power. This feature allows increased flexibility in the locating of your ZyAIR.
You only need to connect the external power adaptor if you are not using PoE. If you simultaneously use
both PoE and the external power adaptor, the ZyAIR will draw power from the PoE connection only. Refer
to the appendix for more information about PoE.
802.11b Wireless LAN Standard
ZyAIR products containing the letter "B" in the model name, such as ZyAIR B-420, ZyAIR B-3000, comply
with the 802.11b wireless standard.
The 802.11b data rate and corresponding modulation techniques are as follows. The modulation technique
defines how bits are encoded onto radio waves.
Data Rate (Mbps)
1
2
5.5 / 11
1-2

Figure 1-1 PoE Installation Example

Modulation
DBPSK (Differential Binary Phase Shift Keyed)
DQPSK (Differential Quadrature Phase Shift Keying
CCK (Complementary Code Keying)
802.11b
)
Getting to Know Your ZyAIR