Example 1

The command shown in Example 1 deletes the Persistent Chat configuration settings for the Redmond site.

	Copy Code
Remove-CsPersistentChatConfiguration -Identity "site:Redmond"

Example 2

In Example 2, all the Persistent Chat configuration settings applied to the site scope are removed. To do this, the command first employs the Get-CsPersistentChatConfiguration cmdlet and the –Filter parameter; the filter value "site:*" limits the returned data to settings applied at the site scope. These settings are then piped to the Remove-CsPersistentChatConfiguration cmdlet, which deletes all the settings applied to the site scope.

	Copy Code
Get-CsPersistentChatConfiguration -Filter "site:*" | Remove-CsPersistentChatConfiguration

Example 3

Example 3 deletes all the Persistent Chat configuration settings where the default chat history is greater than 30. To carry out this task the command first uses the Get-CsPersistentChatConfiguration cmdlet to return a collection of all the Persistent Chat configuration settings. This collection is then piped to the Where-Object cmdlet, which picks out only those settings where the DefaultChatHistory property is greater than (-gt) 30. The filtered collection is then piped to the Remove-CsPersistentChatConfiguration cmdlet, which deletes each item in the filtered collection.

	Copy Code
Get-CsPersistentChatConfiguration | Where-Object {$_.DefaultChatHistory -gt 30} | Remove-CsPersistentChatConfiguration

The Persistent Chat service (which replaces the Group Chat service used in Microsoft Lync Server 2010) provides organizations with messaging and collaboration capabilities similar to those found in Internet discussion forums: users can exchange messages in real-time, yet can also revisit and restart those conversations at any time. Conversations can be based around specific topics, and these conversations can be made available to everyone or to only a selected set of users. Likewise, individual chat rooms can be configured so that anyone can post a message or configured so that only designated presenters can post messages.

The Persistent Chat service is managed, in part, by Persistent Chat configuration settings, which dictate such things as the number of previously-posted chat messages immediately available when you log on to a chat room (the chat history) or the maximum size of a file that can be uploaded to (or downloaded from) the service. These settings can be configured at the global or the site scope, or at the service scope (that is, you can have a custom collection of settings assigned to an individual Persistent Chat pool).

To return a list of all the role-based access control (RBAC) roles this cmdlet has been assigned to (including any custom RBAC roles you have created yourself), run the following command from the Windows PowerShell command-line interface prompt:

Get-CsAdminRole | Where-Object {$_.Cmdlets –match "Remove-CsPersistentChatConfiguration"}

Lync Server Control Panel: To remove a collection of Persistent Chat configuration settings using the Lync Server Control Panel, click Persistent Chat and then click Persistent Chat Configuration. Select the collection to be removed, click Edit, and then click Delete.

The Remove-CsPersistentChatConfiguration cmdlet accepts pipelined instances of the Microsoft.Rtc.Management.WritableConfig.Settings.PersistentChat.PersistentChatConfiguration object.

None. Instead, the Remove-CsPersistentChatConfiguration cmdlet deletes existing instances of the Microsoft.Rtc.Management.WritableConfig.Settings.PersistentChat.PersistentChatConfiguration object.