Hello @Sisob ,
Welcome back to the Poly Community.
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As a reminder the basic information asked for:
UC Software 4.0.0 or later via the Web Interface Utilities > Phone Backup & Restore > Phone Backup > Phone Backup. Please rename into .TXT or Zip the file to attach.
Since UC Software 5.9.0 simply provide this via the Web Interface Diagnostics > Download Support Information Package
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Oct 01, 2018 Question: What power consumption has my Polycom phone?
Resolution: Please check => here <=
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
BAsed on document you provided, i read that maximum power for VVS311 and VVX 401 are 4.0 W and 4.5 W.
Power for CDP Advertisement is VV311 = 7 W and VVX 401 = 15.4 W.
Let say, i have 20 VVX401, meaning 20 x 4.5 W = 90 W.
Or, 20 x 15.4 W = 308 W
Which one i can use as reference when i buy PoE swicth to calculate the power?