You plan to deploy a Microsoft Lync Server 2013 Enterprise server by using a side-by-side upgrade from Office Communication Server (OCS) 2007 R2. You perform the following actions: - Complete the…

You plan to deploy a Microsoft Lync Server 2013 Enterprise server by using a side-by-side upgrade from Office Communication Server (OCS) 2007 R2. You perform the following actions:

• Complete the schema updates, forest update, and domain update.
• Define and connect the Lync Server 2013 topology to OCS 2007 R2 by

using topology builder.

• Deploy Front End Pool, Director Pool, Persistent Chat Pool, and Edge

Pool. The Lync Server 2013 environment is using the OCS 2007 R2 Mediation Server and associated PSTN gateway for PSTN inbound and outbound calls. You want to test the Lync Server 2013 server for inbound, outbound, and dial-in conference calls from a test computer that is located in a customer's office. Your access to the customer network is restricted to Lync Severs, OCS servers, and some test computers. During inbound, outbound, and dial-in conference calls, you encounter problems with media. The calls have significant jitter and packet loss. Calls are intermittently disconnecting. You need to determine the cause of these problems. What should you do?