I have a Kamailio in front of an Asterisk Cluster and moved to rtpengine to give support for SRTP from rtpproxy

What i want is to have SRTP on Kamailio-rtpengine leg but RTP inside network for Asterisk.

I have found that config https://loadmultiplier.com/sites/default/files/kamailio/pcscf/kamailio.cfg

But could not be able to make it work? Anyone did this scenareo and could give me some tips?

I have enabled sdops and be able to remove SRTP and crypto lines but not be able to make it work as i mention

Thanks in advanced

Alberto