We have Cisco router 1760 with FXO, CCM and Cisco Unity. I remove the auto attendant on Unity to discover the problem. The problem is when a caller called the company from outside (PSTN) every thing works fine, but if he hangs up the phone, our cisco phone keeps on ringing.
I called the company from my mobile, the call routed to the main phone (assume that nobody answers the phone), I hang up my mobile and the company phone keeps on ringing with no end.
Could you please advice me how to solve this problem.