A nec 3500 summary

vbimport

#1

Hi.
I know that there are many places and posts to learn about all abbreviations, firmwares and features of the NEC 3500.

But couldn’t we create a summary post of all this abbreviations(full cav, p cav etc.), firmwares and other significant info gathered in one post.
Maybe a list of all firmwares and the main advantages/disadvantages?