From GSC Wiki
|GSC Help Voice Server|
You can also talk to GameServers, GameTracker, and GSC staff and other GSC members in the GSC Help Voice Server (also known as the "GSC Lobby"). This can be found under the Help menu on the Friends List . In GSC 1.0 click "Join GSC Lobby" or GSC 2.00 click "Join GSC Help Voice Server"