[cisco-voip] Callmanager cluster in Wan

[Leonardo D'Urso]

Hi there

A customer of mine have two site: one in EU, one in USA with two different clusters of callmanager. Actually there is a trunk that permits to call between. 
I have users that want to have the same extension mobility profile on each side. 
I have evaluated that with a latency of 120ms it is not possible to have 1 centralized ccm cluster infrastructure with 1pub and 2sub in EU and 1 sub in USA. But what happens if i have all ccm server in a single location EU and a single voice gateway with SRST in USA and the  ip phones that directly point to ccm cluster in EU?

Regards
Leo 
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Leonardo D'Urso
l.durso at gmail.com