I am currently running Call Manger System version: 22.214.171.1240-12. Publisher on a 7825 and subscriber on a 7815. We also are running CRS 5.0(1)SR02ES02_Build023 and Unity on a 7815. Our lease is running out on the 7815 boxes and we have purchased two 7835s to replace the subscriber and IPCC. We also purchased the SW CallMgr 5.1 Migration 7815 to 7835. We are removing the unity box and going to an Exchange 2007 solution.
Can anyone point me in the right direction for getting this done. I've looked all over for some type of migration instructions but can only find upgrading from 4.X to 5.X.