Upgrade CUCM Cluster with encrypted calls

[Salvador Antonio Quintanilla Mendoza]

Hi!,

     We have a CUCM Cluster (one pub and two subscribers) in 11.0.1.22900-14. Due to the EOS of this version we need to upgrade to 12.5. As I read in the compatibility matrix, this jump is a "Direct Refresh".

https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/compat/12_x/cucm_b_compatibility-matrix-cucm-imp-1251.html#reference_67BDD7CCD5E79B2A974B1EFAE4FD15B9

My Only Concern is that the cluster is configured with "encrypted" calls, the encrytion was configured with the two USB sticks containing the security tokens. 

QUESTION: Do I need to make some extra task in order to upgrade my encripted cluster? the calls will remain encrypted after the upgrade?

Thanks in advance,

[Jaime Valencia · Accepted solution]

No, all the certificates and CTL remain untouched by the upgrade process.

Make sure to thoroughly read:

A) Upgrade Guide

B) Release Notes

C) OVA README/RN

All for the target release for everything you need to know regarding the upgrade.