VXML server (Voxpilot) and SIP server (asterisk): howto?

Hi all,

I have two servers: one is VXML server with voxpilot and the other is asterisk working on linux Elastix version. The problem I’m facing is the following:
when calling my IVR number (100), i’m redirected to the VXML server with voxpilot , but I want to tranfer that call to the asterisk server because through SIP protocol.
I don’t know how to proceed, please someone can help me ? waiting for your help, my email below.

e.esdras@yahoo.fr