Yealink W79P Quick Reference Manual page 4

Yealink W79 DECT Phone
Power over Ethernet
+ Connect the Ethernet cable between the Internet port on the base station and an available port on the in-line power
switch/hub.
NOTE: If in-line power is provided, you don't need to connect the AC adapter.
Make sure the switch is PoE compliant.
IMPORTANT! Do not remove the power and network to the base station while it is updating firmware and
configurations.
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IEEE 802.3af compliant PoE Switch
Quick Reference Guide
4