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Community Member

Design limitations for centralized call processing

For centralized call processing, why is there a design limitation of 20 phones at a remote site? What would happen with 40 or even 60 phones at a remote site, assuming there was enough bandwidth to support them?

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Community Member

Re: Design limitations for centralized call processing

I'm not aware of a limitation on remote sites. Perhaps I'm using it differently, but I have centralized CM's, and use locations based call control, and have sites with 40 or more phones with no problem. I've used CM 3.07, 3.09, and now 3.1(1).

Community Member

Re: Design limitations for centralized call processing

That design limitation was recommended before the introduction of SRST. Originally, we were meant to deploy CallManager cluters at larger remote sites.

Now, with SRST, the number of phones that can be supported is a trade-off based on choice of router platform, WAN reliability and loss of functionality on WAN failure.

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