The USB Type A has a flat rectangle interface. It is not
reversible and is able to transmit data or power.
The USB Type C is reversible and full duplex. It is able
to transmit data, video or power.
Plug in the phone
The phone can be powered either via a power adapter (sold separately) or via Power over Ethernet
(PoE).
USB boost
The USB boost feature allows a desk phone to get more power available from Power over Ethernet
(PoE) than requested through a default startup, for several needs such as more USB current for
accessories (smartphone charging). In this case, your administrator has to enable the USB Boost to
deliver more power. After restart, the phone changes its USB current limiter management, to increase
the available power from 500 mA to 900 mA and can change of PoE class.
Contact your administrator if necessary.
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