[Freeswitch-users] Call from "Client without TLS" to "Client with TLS"

Hi all, I googled so much, unfortunately found nearly nothing about it. I've got two different clients. One of them supports TLS and registers Freeswitch via TLS. The other one doesn't support TLS and registers Freeswitch via UDP. I can make calls from TLS to UDP direction. But making calls from UDP to TLS direction is a problem. What do i have to do for dialing from UDP to TLS direction? Is it possible? If it is, how can i edit the configuration? Any example will be appreciated. Thx.