PLANET VIP-255PT - Manual (Page 12)

Figure 2-3 power adapter installations
Step 3: Adjust the stand angle.
Figure 2-4 stand angle adjustment
12
Power Adapter (5V DC)
NOTE: Use only the power adapter shipped with the
unit to ensure correct functionality.
Press and hold the button of right side to change the
stand mount angle.
L Note
Please don’t connect PoE injector and AC adapter to
VIP-255PT at the same time, this may make the effect of
current pulse and then cause device damage. Be noted to power
the SIP IP phone either from 802.3af PoE or AC adapter.