Topic Last Modified: 2010-10-12

The following table describes the ports that are used by call management features. These ports are default settings that you can change by using the Set-CsApplicationServer cmdlet. For more details about this cmdlet, see the Lync Server Management Shell documentation.

Ports used by call management features

Call management feature	Port number	Description
Call Park	5075	Used for SIP listening requests
Announcements	5071	Used for SIP listening requests
Response Group	5071	Used for SIP listening requests
	8404	Used for interserver communications Note: This port is used for the Match Making service and is required when the Response Group application is deployed in a pool that has more than one Front End Server.