Yealink SIP-T54S Administrator's Manual page 62

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
For CP920:
If in-line power switch/hub is provided, you don't need to connect the phone to the power
Note
adapter. Make sure the switch/hub is PoE-compliant.
The IP phone can also share the network with another network device such as a PC (personal
computer). It is an optional connection. We recommend that you use the Ethernet cable
provided by Yealink.
Important! Do not unplug or remove the power while the IP phone is updating firmware and
configurations.
Connecting the Optional USB Flash Drive (Only Applicable to
SIP-
T54S/T52S/T48G/T48S/T46G/T46S/T42S/T41S/T29G/T27G/CP
860/CP920 IP phones)
You can connect a USB flash drive to record and play back calls. For SIP-T54S/T52S IP phones,
you can also connect a USB flash drive to display pictures on your phone and set a picture
stored in the USB flash drive as the wallpaper/screensaver.
If you have connected an expansion module to the SIP-T54S/T52S, the USB port on the
Note
expansion module can be used as that on the IP phone.
If you have connected the expansion PSTN box CPN10 to the CP860
port on the CPN10 can be used as that on the IP phone.
36
/CP920 IP phones
, the USB