Multiple Cisco AS5800 controlled by 1 Cisco 7206VXR

I have been tasked by management to determine if there is a way to connect more than 1 AS5814 to a Cisco7206VXR for the purpose of Providing Dialup Modems. Currently we have a 1 to 1 ratio of Cisco 7206VXR Router-Shelf connected to a Cisco 5814 Dial-Shelf and it works without any problems. We are trying to see if anyone has had any luck with connecting more than 1 dial-shelf to a single Router-Shelf. Any recommendations are welcome. D. Scott Smith Operations Manager Core Communications, Inc. scott@coretel.net