I'm finding some conflicting upgrade information in the release notes of 5.1(3):
The 5.1(3) doc specifically states:
Do Not Upgrade from Cisco Unified CallManager 5.1(3) to Cisco Unified Communications Manager 6.x
It is not possible to successfully upgrade from Cisco Unified CallManager Release 5.1(3) to Cisco Unified Communications Manager Release 6.x.
Whereas the other 6.x and 7.x docs listed above all list 5.1(3) under the allowed direct upgrades.
Is it safe to ignore the warning in the 5.1(3) doc??
Hi Will here is the link for the upgrade path
It stays that you can upgrade from 5.1.3 to 6.1
If you upgrade to CUCM Release 5.1(3), you cannot then upgrade to Releases 6.0(1) or 6.0(1a).
Pls rate if it helped