CUCM-IM&P compatibility

[techguy]

Hi Everyone,

We are planning to upgrade CUCM servers only in cluster. But in same cluster we have IM&P & CUC too.

Current Versions:

CUCM: 11.0.1

IM&P: 11.0.1

CUC: 11.0.1

After upgrading:

CUCM: 11.5

M&P: 11.0.1

CUC: 11.0.1

Will IM&P & CUC will be compatible with CUCM 11.5? Thanks

[Georgios Fotiadis · Accepted solution]

For CUC there will be no issue, it will work fine.

For IMP though, major and minor version (X.Y - 11.5) needs to match; i.e. you will have to upgrade IMP to 11.5.

[Jaime Valencia · Accepted solution]

This is why you need to thoroughly review the upgrade guide and the RN if you're planning for an upgrade

https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/upgrade/11_5_1/cucm_b_upgrade-guide-cucm-115/cucm_b_upgrade-guide-cucm-115_chapter_01100.html