Question : unable to log into OCS Group Chat adminstration tool

hi, when i tried login in group chat administration tool using manual configuration, i get an error "cannot sign in because of problem in chat room service." and while using automatic configuration i get an error "cannot establish network connection". please advise.

I've followed the steps in this article:
http://www.shudnow.net/2009/03/18/office-communications-server-2007-r2-group-chat-deployment-part-2/

Answer : unable to log into OCS Group Chat adminstration tool

ok, refer the following link for further troubleshooting and diagnostic logging,

http://www.ocspedia.com/GroupChat/Unable_to_sign_in_GC.htm