Upgrading 2 sites 1

[mojoputter]

I have a customer with IP500V2 8.1.85 at site A and 8.1.69 at Site B, the plan is to upgrade both sites to R10.
Site A has a PRI that handles the incoming and outgoing calls for both sites, with SCN between the sites. It also has VMPro for both sites.

The question is can I upgrade site B to R10 then a couple days later upgrade site A, will everything still function..?

The end is near!

 

[AACon]

Technically, only 1 release difference between SCN's is supported. However, I've had sites with greatly varying firmware levels, and it has worked just fine. Just know any features will default to the lowest supported version.

-Austin
I used to be an ACE. Now I'm just an Arse.