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 Using the SQL Server Management Studio, select Security | Logins.  | 
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 Right-click and select Properties.  | 
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 Select User Mapping and select the Lync or Skype for Business database to be mapped (LcsCDR or LcsLog).  | 
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 Expand the console treeview and select the Lync & Skype for Business Server node.   | 
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 Right-click and select Connect to Pool.  | 
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 To use the same server and credentials as for the CDR database connection, select Use CDR Database Connection Details.  | 
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 Click Apply.  | 
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 Click OK.  | 
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 Click Disconnect.  | 
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 Click Yes in the Are you sure you want to disconnect dialog box.  | 
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 Click Apply.  |