Hello,
I'm looking at integrating Lync Server 2013 into my lab environment, which consists of a mixed 2010/2013 Exchange environment.
UM - Exchange 2010
CAS - Exchange 2013
MBX - Exchange 2010
MBX - Exchange 2013
I've been reading about associating CAS and MBX servers with UM dial plans, when integrating with Lync.
The Technet articles, and MS Press documentation I've read suggests that all CAS and MBX servers need to be associated with the dial plan.
Does this include the 2010 MBX servers?
As far as I was aware, in a co-existence environment between 2010/2013 all traffic is proxied to the MBX servers via the CAS 2013 role?
Does this rule still apply when UM and Lync exist in the environment?
Also, does the 2010 UM server need to be associated with the Lync UM dial plan, or does the 2013 CAS server handle this traffic as well?
Thanks
Matt