You need to recommend changes to the proposed Lync server design that meet the companys availability requirements for PSTN connectivity in the main office. What should you include in the recommendation?
A.
a Response Group.
B.
a new dial plan.
C.
an additional Lync Server 2010 server in the Front End pool.
D.
an additional server that runs the Exchange Server 2010 Unified Messaging server role.
Explanation:
[!] Need full case info, but availability means you need to have a host to failover to. Of the two options presented, UM is not related to PSTN connectivity, and PC-to-PSTN calls need a Front End server as a registrar.