Heads Up :
The post you are writing will appear in a public forum. Please ensure all content is appropriate for public consumption. Review the employee guidelines for the community here.
I have a customer who I originally configured with a site-to-site VPN using IOS Firewall on 1721/51 routers. They use IP phones on one side and have both IP sets and call control on the other (non-Cisco, sorry). The config sent intersite VoIP traff...