Can anyone tell me what is the difference between CM4.3-K9-MIG0 (SW CallMgr 4.3 Same Server Class Migration) and CM4.3-U-K9-7835 (SW CallMgr 3.3 To 4.3 Upgd, MCS-7835, 2500 Svr Usr Lic)? Both products contain exactly the same set of CDs. The only difference I see is that the first one costs 500 USD and the second one 5000 USD!!! Which one is then required for upgrading from 3.3 to 4.3?
I am not really aware of the CD contents of these two part numbers, however here's the answer for your query -
CM4.3-K9-MIG0 - This could be used when youalready have CM 4.3 installed on let's say server X and want to move CM 4.3 to a new server let's say Y. If the servers are of same class, eg 7825 to 7825 OR 7845 to 7845 you can use this part number. Since you ate not changing the CM version the cost is low.
CM4.3-U-K9-7835 - This is the upgrade part number from CM version 3.3 to CM version 4.3. This can be used if you have CM 3.3 running on MCS 7835 and want to upgrade CM to version 4.3 on the same server.