I have had my ASA 5520 up and running with 60 branch offices connecting with 871 routers for 9 months. I also have connectivity between branches running through the ASA. However this is not practical now that I want to make VoIP calls between branches. No reason to tunnel from west coast to east coast and then back to west coast for a call that is only 200 miles from each other. I want to have my 871 routers build tunnels between themselves but still have connectivity back to the ASA. Before I post any configs I want to know if this was even possible with the hardware I am using.