I have some doubts regarding AP 2135. Which is its power consumption? Is the PoE Injector 1700923F1 mandatory or is it optional? How many AP2135 can be powered by a single NetVanta1531P? Thanks
If you have a poe switch or midspan that is capable of IEEE 802.3at PoE+ then you should be fine.
As for the 1531P it's total PoE output is 65 Watts
I would recommend you take a look at NetVanta 1531P Power Budgeting as it goes over ways to get the most out of the power budget on the NetVanta 1531 as well.
ADTRAN Product Support Engineer