Topic Last Modified: 2012-10-08

To enable Lync users in your organization to communicate with users of a Microsoft Lync Online 2010 customer, you must have completed the following steps:

After you complete all of these steps and the administrator of the Lync Online 2010 customer completes all configuration of their online services to support federation with your organization, verify communications by testing communications between an internal user in your organization and a user of the Lync Online customer. If communication is not successful, use the Logging Tool from your Edge Server to capture log and trace files in order to troubleshoot the problem. For details about using the Logging Tool, see Open Lync Server Administrative Tools in the Operations documentation. For details about the Logging Tool, see the Lync Server 2010 Logging Tool documentation on the TechNet Library at