Automatic configuration is the recommended way to connect Group Chat to Group Chat Server. If you have configured automatic client sign-in for Office Communications Server 2007 R2, you use the same Domain Name System (DNS) records for Group Chat Server.
The Office Communications Server documentation provides
specific instructions on creating the DNS records required for
automatic client sign-in. For details about using Office
Communications Server 2007 R2 Standard Edition, see Required DNS
Records for Automatic Client Sign-In at
Open Group Chat. Click Start, point to All Programs, and then click Microsoft Office Communications Server 2007 R2 Group Chat.
In the Group Chat Logindialog box, in the Accountdrop-down list box, keep the default setting of Automatic Configuration.
Enter your SIP Uniform Resource Identifier (URI), Windows logon, and Windows password, and then click Sign In.
The SIP URI and logon will pre-populate the next time that you sign in to Group Chat.