使用openser / opensips进行星号负载平衡

I need to load balance incoming calls to asterisk. To do this, I have set up the Openser server in front of it and I loaded and configured the dispatcher modules to do so. What I want to do is that the Openser server will receive the calls and route them to the least "busy" Asterisk server which will take care of the rest (I have an IVR menu set up in each of the servers). I am using X-Lite softphone for testing. The same users are registered in both Asterisk and Openser. When I initiate the call it just goes across the Openser server, it does not get forwarded to any of the Asterisk boxes. I am wondering if I am missing any configuration or step in my set up.I need to load balance incoming calls to asteri