I have a SG300-28P that when I plug in a Avaya VOIP phone, changes from tagged to excluded on my VLAN 50 that I have set aside for phones.  The phone that doesn't work until I change it back to tagged.  Then if you reboot the phone, it doesn't change...

Hi,I was running firmware 1.1.2.0 and everything was working fine on 2 of these switches, connected via fiber.  I tried upgrading to the latest firmware (1.3.5.58) and had no luck.  Our phones which are Avaya 9650 VOIP handsets could not find the rou...