I am looking into migrating my CCM 4.1.3 and Unity 4.0.3 environment to UCM 7.x and Unity Connection 7.x I am looking to do one component at the time but not sure which one I should do first.
some questions that I have in front of me right now. Hope someone can help clearify.
If I upgrade CCM 4.1.3 first. Will UCM 7.x compatible with Unity 4.0.3 and vice versa ?
Unity is currently running on an MCS-7835 server. Is it possible to run Unity Connection 7.x on this server ? I am think of re-using this server for the Unity upgrade.
Has anyone gone through this migration with the same version ? I appreciate any inputs/suggestions !!!
Thanks in advance !!!
TFTP files like SEPMAC.cnf.xml and other Cisco generated files will be recreated when the data is imported, any custom stuff (backgrounds, ringtones, etc) you need to manually upload and configure again.
Since DHCP was a Windows service on 4.X versions, nothing is migrated with DMA, you'll need to configure DHCP directly on CUCM again.
If this helps, please rate
You need to decide exactly what versions of ICM you want to migrate to as there are only certain versions of UCM that will work with certain ICM versions. A key issue is that ICM 7.2 is the last version of ICM to work with CM4.1.3, so unless you plan to upgrade all components in one go (typically a weekend) then you have to stage the upgrade in steps.
You could upgrade to CM 4.2 and then upgrade ICM to 7.5, then follow on with an CUCM upgrade to 7.1(x) after that. You'll have some AD work to do on route as well, plus the option to upgrade to Windows 2008 when you hit ICM 7.5(5) upwards.
Unity interoperates with all CUCM versions so you can push that one aside for now.
Here's the compatibility matrix I drew up for personal reference, double check anything before you swear by it!
Also, given your hardware may well be quite old a tech refresh offers some benefits here as you can build your traget platform standalone and largely test it before cutting over.
Upgrading all these components is not a trivial activity! I'm currently involved in two projects for customers going through pretty much all the same component upgrades as you and it's taking a lot of very careful planning,