From a user account that is a member of the RTCUniversalServerAdmins group (or has equivalent user rights), or assigned to the CsServerAdministrator or CsAdministrator role, log on to any computer that is in the network in which you deployed Lync Server 2010.

Open a browser window, and then enter the Admin URL to open the Lync Server Control Panel. For details about the different methods you can use to start Lync Server Control Panel, see Open Lync Server Administrative Tools.

In the left navigation bar, click Monitoring and Archiving, and then click Call Detail Recording.

On the Call Detail Recording page, click New.

In Select a Site, click the site to which the policy is to be applied and click OK.

In New Call Detail Recording Setting, do the following:

• In Name, specify a name for the new site policy.
  
  
• Select the Enable monitoring of call detail recordings (CDR) check box to turn on monitoring.
  
  
• Select the Enable purging of call detail recordings (CDR) check box to turn on purging.
  
  
• In Keep call detail recordings for maximum duration (days), select the maximum number of days that call detail recordings should be retained.
  
  
• In Keep error report data for maximum duration (days), select the maximum number of days that error reports should be retained.
  
  

Click Commit.