You support Microsoft Lync Server 2013 servers in your customer’s network. The network includes
wired and wireless networks. The network is configured to support Microsoft Lync Mobile users who
have mobile devices that are running Microsoft Lync 2010 for iPhone. Users of Lync 2010 for iPhone
report that they are unable to receive push notifications when they are connected to the company’s
internal network. They are able to receive push notifications when they are connected to their
cellular network. You need to diagnose why these users cannot receive push notifications. What
should you do?

A.
Open a Telnet session to port 5223.

B.
Run the Test-CsPhoneBootstrap cmdlet.

C.
Run the Test-CsMcxP2PIM cmdlet.

D.
Run the Test-CsFederatedPartner cmdlet.