issue with power drwan with poe

[r.kukreja]

hi,

we are planning to deploy 3560x-48P-s switch for voip in our network that provide only 435 POE power

can we install 48 ip phone of 15.4 watt i.e 7975G that belong to class 3 of POE. will it work

please light also how many poe phone of class 1 , 2,  3 can be deployed with above switch

regards

rajat

[ghostinthenet · Accepted solution]

To install 48 class 3 devices will require that the switch have ~740W of PoE available. The 3560X-48PF-S, which can provide up to 800W of PoE is the appropriate device for your application.

With class 2 devices, you can put one device on each of your 48 ports without difficulty on a 3560X-48P-S. Even at maximum draw, they use less than half of the power of a class 3 device.

Class 1 devices won't be any trouble because they only use a little over half of what a class 2 device draws.