I have just updated to 15.5.5 and I see on the updates page a checkbox (not currently checked) that says "3CX PBX updates." What is that checkbox for? By checking that, does that mean that the automatic updates will only include PBX updates and not phone firmware, etc? Or does it mean the opposite, or something else altogether? I did a search, but I couldn't find the answer here on the forums or in the admin manual. Thanks for your help.