How to build virtual lab for new CCNP collab (v3)

[TCPuniverse]

Hello all;

is there any resources about how to build "a virtual lab" to practice the new collaboration exams (CLCOR, CLACCM, or generally Collaboration v3 topics)?

For example I want to know how we can practice PSTN call routing and work with virtual voice gateways (if that was possible though, I don't know) while there are no any physical routers in the lab?

I installed CUCM 12.5 and as I know all the server images are available for the ESXi (CUC, CUP, CMS, expressway, etc). But I cannot find any information about proper way of studying. 

Any help/idea?

[TimothyBooth]

Have you made any progress with this?

Also do you know if it is possible to install CUCM on a PC using VMware workstation w/ ESXI 7.x? Do you know of a task list to make this work?

If not, do you know what the cheapest options are for servers?

[Nithin Eluvathingal]

Initial days i used a high end PC for running UC applications on vmware workstation . But i was able to run only one applications at a time. Then i moved to a dell server with vmware esxi , i was able to run at least 3 apps but it took around 20-30 mins for the applications to come up.

Now i have a UCS 220 m3 server with vmware 6.5 and i run all my applications on this server.