Connecting Multiple CMs

[mberry5460]

I am new at this so please excuse any ignorance on my part.
I need to configure a test setup for 3 different CMs.
I have to test my product with 3 different versions of CUCM.
What is the best way to connect those 3 CMs up?

Each CM would only have 2 phones connected.
Thanks in advance for your help.

 

[gnrslash4life]

In short, you can use either an ICT trunk or a SIP trunk pointing at each cluster.

Certifications:
A+
Network+
CCENT
CCNA Voice
TVOICE
CAPPS
CIPTV1
CIPTV2

 

[mberry5460]

I am testing SRTP capability, does that make a difference in which trunk type I would use?

 

[gnrslash4life]

I would think not because RTP packets are being sent CM to CM. Its end point to end point.

Certifications:
A+
Network+
CCENT
CCNA Voice
TVOICE
CAPPS
CIPTV1
CIPTV2