Elastix 2.x / secondary subnet through VPN Tunnel

Trying to setup a grandstream dp715 on a remote subnet through a VPN tunnel. So far, having no luck. I set both firewalls to allow VOIP traffic through the tunnel but I can’t get Elastix to see the remote subnet…

I have set the ports in the firewall rules but still cannot get my system to search another subnet across or through the VPN tunnel…

Can anyone point me in the right direction?

grandstream dp715 isn’t listed as a model in the endpoint configurator… How can I add more models?

I would recommend asking for help with Elastix in their forum at http://forum.elastix.org/

It is unlikely that users here will know anything about the GUI your product is using.