Hi, On a Cat 5500, the Sup II CatOS is ver 4.5 & on RSM IOS is ver. 11.2. I want to upgrade BOTH of the above. Is their a compatibility matrix? Thanks - Tennisman. -------------- next part -------------- An HTML attachment was scrubbed... URL: https://puck.nether.net/pipermail/cisco-voip/attachments/20051211/ad7b4086/attachment.html