Hi all, the customer has an IPO R9.0.5 with PCS 16. I'm thinking to upgrade it to 9.1. Do I need an upgrade license for it? I'm kinda confused based on the KB: "PCS 14 or lower units must first install Release 8.1(65) (or higher 8.1) or any Release 9.0 and then upgrade to Release 9.1. Care should be taken to ensure that no calls are made before the upgrade to Release 9.1, otherwise the system will require an 9.1 upgrade license despite being "new"." Avaya said I need one. Hope someone will end my confusion.