Poe; Example Applications; Poe Example Application - ZyXEL Communications GS2220 Series User Manual

1.1.6 Po E
The Switch is a Power Sourcing Equipment (PSE) because it provides a source of power through its
Ethernet ports. Each device that receives power through an Ethernet port is a Powered Device (PD).
The Switch can adjust the power supplied to each PD according to the PoE standard the PD supports.
PoE standards are:
• IEEE 802.3af Power over Ethernet (PoE)
• IEEE 802.3at Power over Ethernet (PoE) Plus
The following table describes the PoE features of the Switch by model.
Table 2 GS2220 Series Models and PoE Features
PO E FEAT URES
IEEE 802.3af PoE
IEEE 802.3at PoE Plus
Power Management Mode
PoE Power Budget
For example, if an IP camera requires 25 watts power on average, then the Switch can supply PoE to up
to 15 IP cameras on the GS2220-28HP and GS2220-50HP. See
the total PoE budget.
1.2 Exa m ple Applic a tio ns
This section shows a few examples of using the Switch in various network environments. Note that the
Switch in the figure is just an example Switch and not your actual Switch.
1.2.1 Po E Exa m ple Applic a tio n
The following example figure shows a Switch supplying PoE (Power over Ethernet) to Powered Devices
(PDs) such as an IP camera, a wireless router, an IP telephone and a general outdoor router that are not
within reach of a power outlet.
Chapter 1 Getting to Know Your Switch
G S2220- 10HP
Yes
Yes
Consumption
Classification (default)
180 W
GS2220 Series User's Guide
28
G S2220- 28HP
Yes
Yes
Consumption
Classification (default)
375 W
Section 8.8 on page 114
G S2220- 50HP
Yes
Yes
Consumption
Classification (default)
375 W
for more details on