HOTSPOT
Your customer supports a Microsoft Lync Server 2013 environment.
Users are unable to add a federated user to an AV conference. The affected users can view the
federated user’s presence, and the internal users’ External Access Policy is configured to allow
communication with federated users. You attempt to initiate a Telnet session to TCP port 5062 from
your Lync Server 2013 Front End Server to your Lync Server 2013 Edge Server’s internal interface,
but you receive an error message that includes “Could not open a connection to the host, on port
5062:
Connect failed.”
You decide to work with the network team to ensure that the Lync Server 2013 environment has the
appropriate connectivity to ensure media path negotiation and media flow between the front end
server and the Edge server.
You need to ensure that users are able to add federated users to an AV conference.
Which network ports should you confirm are open on the Lync Server 2013 Front End Server and on
the Lync Server 2013 Edge Server? To answer, select the appropriate server or servers for each port
in the answer area.
Answer: 
Explanation: