[cisco-voip] Expressway MRA design question

[Brian Meade]

It's definitely going to keep trying those services if it sees _cisco-uds.
I'd try to do external DNS on the wireless as a workaround there.

JID and service discovery domain can definitely be different but AD-joined
PCs will try the AD domain as service discovery domain by default.

On Tue, Feb 14, 2017 at 1:47 PM, Pawlowski, Adam <ajp26 at buffalo.edu> wrote:

> I've actually been looking into this myself. Our Wi-Fi system now has a
> NAT mechanism which breaks Jabber, and we have a single DNS. As far as I
> can tell, even if the client fails to be able to connect with the cisco uds
> SRV record, as long as it is there, it will try and connect to the UCM then
> just do nothing, instead of falling back to collab edge.
>
> I have been reading this document:
>
> http://www.cisco.com/c/en/us/support/docs/unified-
> communications/expressway-series/117811-configure-vcs-00.html
>
> This guide indicates that as long as you're specifying the voice services
> domain for these clients, they will refer to whatever you've given it
> there, say, uc-mobile.domain.tld, to look up records, even if your JID and
> login are user at domain.tld . This doesn't work for out of the box
> discovery however.
>
> I am not operating IM&P at this time, which will be a whole other mess,
> but this should be the way to set it up if I'm reading correctly. Haven't
> tried it yet and would not be surprised if something doesn't actually work
> correctly.
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