Multiple sites, multiple Edge servers

How do I configure multiple Edge servers? I am working with a client that has offices in US, Europe, and Asia. There are three sites configured. Each site has it's own internet and voice provider.
Right now they use one Edge server that is located in US. How do I add more Edge servers? Should I use different names for sip.domain.com records?
Any way to configure that if US user in Europe, this user will automatically use Edge server that is located in Europe? Same for Asia.
Can someone help me find documentation and/or explain how to configure it?
Thank you.
Thank you. Eric.

Eric,
Obviously when you get into global Lync deployments things get a bit more complicated. So there are a few things you can do to mitigate issues/failover/etc. So to the questions at hand.
The Lync 2013 Client utilizes the Lync Discover service as the default login method. So as I described in the above post, when the Lync 2013 Client logs in, it will resolve lyncdiscoverinternal.domain.com and lyncdiscover.domain.com before it goes
to the SRV records like OCS/2010 Clients did. The Lync Discover service is a web service that would be published via the reverse proxy. In terms of your example, yes, the first time a user connects to the Lync Server they would connect to where
ever lyncdiscover.domain.com is published. So let's say it's in the US. The client will pass XML files back and forth and go to the edge server defined for the EU Site. The next time the user logs in remotely, they will not go back to the lyncdiscover.domain.com
as the client will cache the location it's supposed to connect in the configuration.cache file. So yes, it would go to the US but only the first attempt (or if it's server was down).
As for the second question. You could utilize a global DNS solution so users in EU get directed to a Reverse Proxy in EU where lyncdiscover.domain.com is published. US folks would go to US, etc. etc.
Thanks,
Richard
Richard Brynteson, Lync MVP | http://masteringlync.com | http://lyncvalidator.com

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