This article describes the options available on the Advanced Connections Settings dialog window, where you can modify the settings that tell Lync how to connect to the Lync servers.
Important: Normally there is no need to change your Lync sign-in settings. Don't use manual configuration unless your support team directs you to do so and provides detailed guidance on the correct values to use.
Use automatic configuration
Open Lync, click the Options button, click Personal, click the Advanced button, and then click Automatic configuration to let Lync Server automatically configure your connection settings.
Use manual configuration
Open Lync, click the Options button, click Personal, click the Advanced button, click Manual configuration, and then use the information provided by your support team to configure the following information:
Internal server name Type the fully qualified domain name (FQDN) of your Lync Server.
External Server name Type the FQDN of your Lync Server, Edge Server.