User guide

Installing Your Phone
Connecting Your Phone’s Power
Cisco Small Business IP Phone SPA 525G User Guide (SIP) 27
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STEP 5 Hang onto screws mounted in the wall.
Connecting Your Phone’s Power
If you are using an external power source, plug it into the building’s power source, and plug
the power supply into the phone base. See Figure 1 on page 23, item #2.
NOTE If you are not using Power over Ethernet (PoE), you must use the PA-100 power supply AC
adapter.
If you are using Power over Ethernet (PoE) to power the phone, the phone will receive power
when you connect an Ethernet cable from the phone’s WAN port to a switch in your network
that provides PoE. See the “Connecting Your Phone to the Wired Network” section on
page 28.