Extract the Lync user list based on the OU

I got a request to extract the Lync user list based on the Organizational Unit

Below is the script to extract the user list based on the Organization Unit

Get-Csuser | where {$_.identity -match "OUName"} | Select-

Object Identity, DisplayName, SipAddress, ConferencingPolicy,EnterpriseVoiceEnab

led,SamaccountName,ExternalAccessPolicy,DialPlan,PinPolicy | Export-csv -path D:\Lyncusers_OU.csv