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CME design - 2 buildings, emergency dialing from both

We're looking to deploy a CME/CUE solution for a small customer - two buildings w/ fiber connectivity, no more than 100 users. We could deploy CME in the 1st, and have IP phones in both buildings register to it, but my concern is over emergency dialing in the 2nd building. (If a phone in the 2nd building dialed 911, the call would originate from the CME voice gateway in the other building.)

To get around this, we'd need to put another voice gateway in the 2nd building with local analog trunks, but I'm not sure this is a supported CME configuration. Looking through the CME design guide (, it indicates support for a multi-site deployment, but only in a distributed processing model, having another CME instance running in the 2nd building (in our case).

So, two questions:

- Is it possible to run a non-CME voice gateway in the 2nd building just to provide local analog trunk connectivity for emergency dialing (and the IP phones could still register to the CME in Building 1?

- Is there a simpler solution for this beyond have to deploy another voice gateway in the 2nd building just for emergency dialing?

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