Avaya wireless phone configuration is a real pain in the a** , no proper documentation from Avaya . We successfully make these connected to IP Office without AVPP for some clients in Qatar , see the steps here . *** 3641 and 3645 model will work with IP Office without AVPP . 3616,3620,3626 will not . Following details are about 3641 and 3645 without AVPP , 1- You need to enable WMM ( Wireless multi media ) on your Access point . Mandatory . If your AP dont support WMM…