Hello folks,

i need to upgrade my 9513 and 9222i to 5.2.6a from 4.2.7d. As i am looking at the release notes i will first need to upgrade to 5.0.8 and then to 5.2.6a.

One caveat that i see is that we currently use IVR without IVR-NAT and this configuration is no longer supported in 5.2.x. Release notes provide the commands to migrate to IVR-NAT mode that seem to be relatively simple. I understand that this will require an outage.

Has anyone done this recently, any pitfalls ? Did your IVR topology, zones stay intact ?

Thanks