Configuring the Listening Address for Application Sharing Servers

Use the Generaltab of the Propertiesdialog box for the Application Sharing Server to configure the listening address for the Application Sharing Server. This is the address to which Office Communicator clients and Communicator Web Access servers connect. Configuring the listening address includes configuring the following:

The IP address. This is the IP address that is associated with the Application Sharing Server. By default, any IP address can be a listening address, which we recommend if IP addresses in your environment are assigned dynamically or if your environment will use the FQDN to refer to the Application Sharing Server. You can also select a specific IP address.
The SIP listening port. This is the port on which the Application Sharing Server receives SIP signaling messages.

A listening address is a combination of the IP address and port on which a server can receive inbound connections. You can create multiple listening address combinations for the server, but each combination must be different.

To configure the listening address for an Application Sharing Server

Open the Office Communications Server 2007 R2 snap-in.
In the console tree, expand the forest node, and then do one of the following:
- For an Enterprise pool, expand Enterprise pools, expand the pool, right-click the server, click Properties, and then click Application Sharing Properties.
- For a Standard Edition server, expand Standard Edition servers, expand the pool, right-click the server, click Properties, and then click Application Sharing Properties.
Click the Generaltab.
To select the address or addresses to which Office Communicator clients and Communicator Web Access servers connect to establish desktop sharing sessions, under Settings, in the IP addressdrop-down list box, click the IP address you want to use. Changes to this setting do not take effect until you restart the Office Communications Server Application Sharing service.
In SIP listening port, type the port number on which the Application Sharing Server listens for SIP traffic. Changes to this setting do not take effect until you restart the Office Communications Server Application Sharing service.