cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
905
Views
0
Helpful
3
Replies

Intercluster trunk with different CUCM version

samhopealpha
Level 1
Level 1

Hi Everybody

 

here is my question

If we have 3 CUCM clusters
o Cluster A - version 8.5
o cluster B - version 11.5
o cluster C - version 9.1
We setup an intercluster trunk between them.
Is there any version requirement to build these ICT?

 

Thanks in advance

Sam

3 Replies 3

Adam Pawlowski
VIP Alumni
VIP Alumni
I’ve never heard of one , it’s just a H.323 trunk afaik .

No, there is no version requirement. If you are building SIP intercluster trunks (recommended!), there are some behavioral differences for the SIP protocol with regards to MTP and FQDN on the 8.5 cluster. If you build H323 intercluster trunks they all behave the same way between those versions as far as I know.

However, if you are planning to deploy Jabber, URIs, ILS and other newer technologies they all require SIP trunks so I encourage you to go that route with your intercluster trunks and not H323. If you go with H323, at some point you will likely have to configure SIP trunks later anyway.

 

Maren

Jaime Valencia
Cisco Employee
Cisco Employee

SRND recommends SIP trunks for 8.5+ and only use ICTs to older releases.

HTH

java

if this helps, please rate
Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: