I just set up Attendant Console on my CM 4.1(3) system, the line status indicators in the PC application were working fine, but I was still having problems with my pilot ringing fast busy.
I restarted the TCD service on my pub and sub and that solved the fast busy issue. Unfortunately, now all the line status icons are unknown although the rest of the attendant app seems to be working just fine.
I have tried re -restarting the services, also - there is nothing blocking UDP traffic between CM and the app (it worked before).
Any ideas, or ways to troubleshoot?