I will need some more detail. Are you using a vector to route the calls? Is the agent logged in and avaliable, walks away from their desk forgetting to logoff or AUX out, and a call is sent to their desk? RONA on the hunt group form would fix this. To send ringing call to voice mail, queue length in the hunt group would be a soultion also. If a call queues, then rings the number of times set in the coverage path interval it will then go to point one in the coverage path. A few more details would help greatly.
Chris