It depends on how much data you need to "migrate" vs. what you've already pre-built on the 7x server. The best way to facilitate this is using COBRAS. However, COBRAS only supports Unity 4.0(5) and higher so you would need to upgrade the 4.0(3) server to 4.0(5) and then use COBRAS to export the data and import it onto the Unity 7x system. You still have to build some things manually upfront but you can migrate all user settings, greetings, Call Handlers, routing rules, and etc. If the boxes are in the same AD, you would also use GSM to "move" the subscribers from server to another and clean up references in AD to the old server. Technically, the order of the operation would be:
Upgrade existing server
Export data from old system
Configure things that cannot be migrated using COBRAS
Run GSM to move subscribers between servers
Import data to new system
I guess the main question is if the 7x server is already configured and running or if it's simply a replacement for the 4x server and has Unity loaded (but not configured)?
The fastest way to do this in your case would be COBRAS. Upgrade your 4.0(3) box to 4.0(5) and go from there. I can give you more details on the COBRAS process and there is a comprehensive help file as well. I have a tech presentation that will help you out a bit as well if you care to make use of it. You'll have to configure some things manually with COBRAS but it's not too extensive but you can migrate a ton of data intact. Within the same AD, you still use GSM but mainly to clean up references on existing AD objects that point to the old Unity server.
DiRT is too much work, here (my opinion). You have to restore to the exact same version of Unity with DiRT. So you'd have to upgrade to 4.0(5) on the existing server then upgrade to 7x on the new server. Then run DiRT backup and then run DiRT restore on the new server. The multiple "upgrades" are more in-place rebuilds than they are upgrades IMO so don't be deceived by that term. This would give you 2 servers running 7x and I'm sure you're replacing the existing server for a good reason otherwise you could have just done this to start with.
SIP traces provide key information in troubleshooting SIP Trunks, SIP
endpoints and other SIP related issues. Even though these traces are in
clear text, these texts can be gibberish unless you understand fully
what they mean. This document attempts to br...
Please find the attached HTML document, download and open it on your PC.
This provides an easy to use form where you simply answer a few
questions and it will render the proper jabber-config.xml file for you
to copy/paste. There is built in logic to verif...
CUCM Database Replication is an area in which Cisco customers and
partners have asked for more in-depth training in being able to properly
assess a replication problem and potentially resolve an issue without
involving TAC. This document discusses the bas...