I'm wanting to do something I see as simple but not sure how so go easy on me. I have a Cisco 2811 router with a 2 port FXO card installed. The IOS is 12.4(13r) and the image file is advipservicesk9. I have an analog line that I want to ring a Cisco VoIP phone that is configured with the directory number 3910. Any help would be appreciated.