Persistent Chat Server Options
Lync Server 2013 provides the capability to
create a set of server options that can be applied globally to all
Persistent Chat pools, or alternatively these same server options can
be applied to a specific site or pool. There is only one global
configuration, which is automatically created when Persistent Chat is
deployed, and is simply named Global. This default Global configuration
contains default settings that can be changed as needed, but the
configuration itself cannot be deleted. A configuration that is applied
at the pool or site level overrides the same settings that are
configured at the global level. Persistent Chat server option settings
include the following:
• Default Chat History—The
number of chat messages that are immediately available for each chat
room upon first request (the global default is 30 chat messages).
• Maximum File Size (KB)—The maximum size of a file that can be uploaded to or downloaded from a room (the global default is 20MB).
Note
The Maximum file size setting applies only in
environments that include legacy Group Chat clients, since these are
the only clients that can post files to a chat room. The Lync Server
2013 Persistent Chat client does not have file upload/download
capability, and therefore this setting does not have any effect on a
native Lync Server 2013 environment.
• Participant Update Limit—The
maximum number of participants in a given room for which Persistent
Chat will send roster updates (the global default is 75). Roster
updates are used to inform connected clients about who is present in
the chat room.
• Room Management URL—The
URL used for custom chat room management. This is an optional setting
that allows the use of a custom room management solution. For example,
an organization can develop their own web application used to manage
Lync chat rooms. If the URL for the custom web application is specified
as the room management URL within the Persistent Chat options, then
users will be redirected to the custom room management site when they
create or manage a chat room using the Lync client.
Use the following steps for creating and applying server options to a specific Persistent Chat pool:
1. Log on to a system where the Lync administrative tools are installed using an account that is a member of the CsAdministrator or CsPersistentChatAdministrator security groups, and open the Lync Server Control Panel.
2. In the left pane, select Persistent Chat, and then click the Persistent Chat Configuration tab at the top.
3. From the New drop-down menu, select Pool Configuration.
4. At the Select a Service dialog box, select the Persistent Chat service from the list and click OK.
5. The New Persistent
Chat Configuration screen now appears. The name for the configuration
is automatically chosen based on the name of the Persistent Chat pool,
as shown in Figure 2.
Figure 2. Creating a new Persistent Chat configuration.
6. The Default chat
history, Maximum file size, and Participant update limit fields are
automatically populated with the same default values used in the Global
policy. Enter new values for these fields to meet the Persistent Chat
requirements of the pool.
7. If a custom room management site will be used, enter the URL for the site in the Room management URL field.
8. When finished, click Commit to save the configuration.
