I have 75 avaya business phones, mostly model 5410, I'm assuming they are considered low grade telecom category?? Or peripheral? I know grades vary by buyer..... but just a simple business phone isnt considered telecom high grade I know.

One phone contains:
Small green main board
keypad board (green with brown back)
Phone display board (black blobs on one side)



Sorry but cannot load pics currently. Thanks for reading this post, and for your help.